{"id":30306,"date":"2026-07-21T16:04:32","date_gmt":"2026-07-21T08:04:32","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=30306"},"modified":"2026-07-23T16:07:35","modified_gmt":"2026-07-23T08:07:35","slug":"outdoor-telecom-cabinet-spd-selection-guide","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/","title":{"rendered":"Gu\u00eda de selecci\u00f3n de SPD para armario de telecomunicaciones al aire libre"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"30306\" class=\"elementor elementor-30306\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-91d8c03 e-flex e-con-boxed e-con e-parent\" data-id=\"91d8c03\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4fea209 elementor-widget elementor-widget-html\" data-id=\"4fea209\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<!--\r\nCUSTOM HTML CONTENT ONLY\r\n\r\nThe WordPress theme or SEO plugin should generate:\r\n- Breadcrumb\r\n- H1\r\n- Author \/ date metadata\r\n- Article schema\r\n- Breadcrumb schema\r\n\r\nH1:\r\nOutdoor Telecom Cabinet SPD Selection Guide\r\n\r\nSEO TITLE:\r\nOutdoor Telecom Cabinet Surge Protection Guide | LEEYEE\r\n\r\nMETA DESCRIPTION:\r\nSelect SPDs for outdoor telecom cabinets, including AC input, 48V DC power, RJ45, PoE, signal lines, remote alarm, grounding and condensation control.\r\n\r\nURL:\r\n\/outdoor-telecom-cabinet-spd\/\r\n-->\r\n\r\n<style>\r\n  .ly-tc,\r\n  .ly-tc * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .ly-tc {\r\n    --ly-blue: #004898;\r\n    --ly-blue-dark: #00366f;\r\n    --ly-blue-light: #eaf3fc;\r\n    --ly-blue-pale: #f4f8fd;\r\n    --ly-green: #16865b;\r\n    --ly-green-light: #edf8f3;\r\n    --ly-orange: #d96e20;\r\n    --ly-orange-light: #fff4e9;\r\n    --ly-ink: #172235;\r\n    --ly-body: #3f4a5d;\r\n    --ly-muted: #687386;\r\n    --ly-line: #dce4ed;\r\n    --ly-line-dark: #c7d3df;\r\n    --ly-white: #ffffff;\r\n    --ly-bg: #f7f9fb;\r\n    --ly-shadow: 0 14px 38px rgba(18, 49, 83, 0.08);\r\n    --ly-shadow-soft: 0 8px 24px rgba(18, 49, 83, 0.055);\r\n\r\n    width: 100%;\r\n    margin: 0;\r\n    overflow: hidden;\r\n    color: var(--ly-body);\r\n    background: var(--ly-white);\r\n    font-family:\r\n      Inter,\r\n      -apple-system,\r\n      BlinkMacSystemFont,\r\n      \"Segoe UI\",\r\n      Arial,\r\n      Helvetica,\r\n      sans-serif;\r\n    font-size: 17px;\r\n    line-height: 1.72;\r\n    -webkit-font-smoothing: antialiased;\r\n    text-rendering: optimizeLegibility;\r\n  }\r\n\r\n  .ly-tc img,\r\n  .ly-tc svg {\r\n    display: block;\r\n    max-width: 100%;\r\n  }\r\n\r\n  .ly-tc a {\r\n    color: var(--ly-blue);\r\n    text-decoration: none;\r\n  }\r\n\r\n  .ly-tc a:hover,\r\n  .ly-tc a:focus {\r\n    text-decoration: underline;\r\n  }\r\n\r\n  .ly-tc p {\r\n    margin: 0 0 18px;\r\n  }\r\n\r\n  .ly-tc p:last-child {\r\n    margin-bottom: 0;\r\n  }\r\n\r\n  .ly-tc h2,\r\n  .ly-tc h3,\r\n  .ly-tc h4 {\r\n    margin: 0;\r\n    color: var(--ly-ink);\r\n    font-weight: 800;\r\n    line-height: 1.23;\r\n    letter-spacing: -0.022em;\r\n  }\r\n\r\n  .ly-tc h2 {\r\n    margin-bottom: 19px;\r\n    font-size: clamp(29px, 3vw, 40px);\r\n  }\r\n\r\n  .ly-tc h3 {\r\n    margin-bottom: 10px;\r\n    font-size: clamp(20px, 2vw, 25px);\r\n  }\r\n\r\n  .ly-tc h4 {\r\n    margin-bottom: 8px;\r\n    font-size: 18px;\r\n  }\r\n\r\n  .ly-tc ul,\r\n  .ly-tc ol {\r\n    margin: 0;\r\n    padding-left: 22px;\r\n  }\r\n\r\n  .ly-tc li + li {\r\n    margin-top: 8px;\r\n  }\r\n\r\n  .ly-tc strong {\r\n    color: var(--ly-ink);\r\n  }\r\n\r\n  .ly-tc [id] {\r\n    scroll-margin-top: 90px;\r\n  }\r\n\r\n  .ly-tc-container {\r\n    width: min(1080px, calc(100% - 48px));\r\n    margin-right: auto;\r\n    margin-left: auto;\r\n  }\r\n\r\n  .ly-tc-prose {\r\n    max-width: 840px;\r\n  }\r\n\r\n  .ly-tc-section {\r\n    padding: 78px 0;\r\n  }\r\n\r\n  .ly-tc-section--soft {\r\n    background: var(--ly-bg);\r\n  }\r\n\r\n  .ly-tc-section--pale {\r\n    background: var(--ly-blue-pale);\r\n  }\r\n\r\n  .ly-tc-eyebrow {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    gap: 9px;\r\n    margin-bottom: 14px;\r\n    color: var(--ly-blue);\r\n    font-size: 12px;\r\n    font-weight: 850;\r\n    letter-spacing: 0.12em;\r\n    text-transform: uppercase;\r\n  }\r\n\r\n  .ly-tc-eyebrow::before {\r\n    width: 26px;\r\n    height: 3px;\r\n    border-radius: 100px;\r\n    background: currentColor;\r\n    content: \"\";\r\n  }\r\n\r\n  .ly-tc-lead {\r\n    max-width: 830px;\r\n    color: var(--ly-muted);\r\n    font-size: 18.5px;\r\n    line-height: 1.68;\r\n  }\r\n\r\n  .ly-tc-grid {\r\n    display: grid;\r\n    gap: 20px;\r\n  }\r\n\r\n  .ly-tc-grid--2 {\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n  }\r\n\r\n  .ly-tc-grid--3 {\r\n    grid-template-columns: repeat(3, minmax(0, 1fr));\r\n  }\r\n\r\n  .ly-tc-grid--4 {\r\n    grid-template-columns: repeat(4, minmax(0, 1fr));\r\n  }\r\n\r\n  .ly-tc-card {\r\n    height: 100%;\r\n    padding: 24px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 12px;\r\n    background: var(--ly-white);\r\n    box-shadow: var(--ly-shadow-soft);\r\n  }\r\n\r\n  .ly-tc-card--blue {\r\n    border-top: 4px solid var(--ly-blue);\r\n  }\r\n\r\n  .ly-tc-card--green {\r\n    border-top: 4px solid var(--ly-green);\r\n  }\r\n\r\n  .ly-tc-card--orange {\r\n    border-top: 4px solid var(--ly-orange);\r\n  }\r\n\r\n  .ly-tc-card p,\r\n  .ly-tc-card li {\r\n    font-size: 15px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  .ly-tc-note,\r\n  .ly-tc-warning,\r\n  .ly-tc-success {\r\n    margin-top: 22px;\r\n    padding: 17px 19px;\r\n    border-radius: 8px;\r\n    font-size: 15.5px;\r\n    line-height: 1.62;\r\n  }\r\n\r\n  .ly-tc-note {\r\n    border-left: 4px solid var(--ly-blue);\r\n    color: #2d5277;\r\n    background: var(--ly-blue-light);\r\n  }\r\n\r\n  .ly-tc-warning {\r\n    border-left: 4px solid var(--ly-orange);\r\n    color: #6a4223;\r\n    background: var(--ly-orange-light);\r\n  }\r\n\r\n  .ly-tc-success {\r\n    border-left: 4px solid var(--ly-green);\r\n    color: #285b46;\r\n    background: var(--ly-green-light);\r\n  }\r\n\r\n  .ly-tc-note strong,\r\n  .ly-tc-warning strong,\r\n  .ly-tc-success strong {\r\n    color: inherit;\r\n  }\r\n\r\n  .ly-tc-cite {\r\n    display: inline;\r\n    margin-left: 2px;\r\n    font-size: 0.7em;\r\n    font-weight: 850;\r\n    line-height: 1;\r\n    vertical-align: super;\r\n  }\r\n\r\n  \/* OPENING *\/\r\n  .ly-tc-opening {\r\n    padding: 20px 0 42px;\r\n  }\r\n\r\n  .ly-tc-quick-answer {\r\n    max-width: 900px;\r\n    padding: 22px 24px;\r\n    border: 1px solid #bfd5eb;\r\n    border-radius: 12px;\r\n    background: linear-gradient(145deg, #f8fbff, #edf5fd);\r\n  }\r\n\r\n  .ly-tc-quick-answer__label {\r\n    display: block;\r\n    margin-bottom: 7px;\r\n    color: var(--ly-blue);\r\n    font-size: 13px;\r\n    font-weight: 900;\r\n    letter-spacing: 0.05em;\r\n    text-transform: uppercase;\r\n  }\r\n\r\n  .ly-tc-quick-answer p {\r\n    color: var(--ly-body);\r\n    font-size: 17px;\r\n    line-height: 1.65;\r\n  }\r\n\r\n  \/* BUTTONS *\/\r\n  .ly-tc-actions {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 12px;\r\n    margin-top: 23px;\r\n  }\r\n\r\n  .ly-tc-btn,\r\n  .ly-tc a.ly-tc-btn {\r\n    display: inline-flex;\r\n    min-height: 50px;\r\n    align-items: center;\r\n    justify-content: center;\r\n    padding: 0 23px;\r\n    border: 1px solid var(--ly-blue);\r\n    border-radius: 7px;\r\n    color: #ffffff !important;\r\n    background: var(--ly-blue);\r\n    box-shadow: 0 10px 24px rgba(0, 72, 152, 0.2);\r\n    font-size: 14px;\r\n    font-weight: 850;\r\n    line-height: 1;\r\n    text-align: center;\r\n    text-decoration: none !important;\r\n    cursor: pointer;\r\n    transition:\r\n      transform 0.2s ease,\r\n      box-shadow 0.2s ease,\r\n      background-color 0.2s ease;\r\n  }\r\n\r\n  .ly-tc-btn:hover,\r\n  .ly-tc-btn:focus,\r\n  .ly-tc a.ly-tc-btn:hover,\r\n  .ly-tc a.ly-tc-btn:focus {\r\n    color: #ffffff !important;\r\n    border-color: var(--ly-blue-dark);\r\n    background: var(--ly-blue-dark);\r\n    box-shadow: 0 13px 28px rgba(0, 54, 111, 0.24);\r\n    text-decoration: none !important;\r\n    transform: translateY(-2px);\r\n  }\r\n\r\n  .ly-tc-btn span,\r\n  .ly-tc-btn:hover span,\r\n  .ly-tc-btn:focus span,\r\n  .ly-tc .leeyee-site-popup-btn span,\r\n  .ly-tc .leeyee-site-popup-btn:hover span,\r\n  .ly-tc .leeyee-site-popup-btn:focus span {\r\n    display: inline-block !important;\r\n    color: #ffffff !important;\r\n    opacity: 1 !important;\r\n    visibility: visible !important;\r\n    -webkit-text-fill-color: #ffffff !important;\r\n  }\r\n\r\n  \/* TABLE OF CONTENTS *\/\r\n  .ly-tc-toc {\r\n    padding: 33px 0;\r\n    border-top: 1px solid var(--ly-line);\r\n    border-bottom: 1px solid var(--ly-line);\r\n    background: var(--ly-bg);\r\n  }\r\n\r\n  .ly-tc-toc__box {\r\n    padding: 22px 24px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 11px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-toc__title {\r\n    margin-bottom: 14px;\r\n    color: var(--ly-ink);\r\n    font-size: 16px;\r\n    font-weight: 850;\r\n  }\r\n\r\n  .ly-tc-toc__links {\r\n    display: grid;\r\n    grid-template-columns: repeat(3, minmax(0, 1fr));\r\n    gap: 9px 22px;\r\n  }\r\n\r\n  .ly-tc-toc__links a {\r\n    position: relative;\r\n    padding-left: 15px;\r\n    color: var(--ly-body);\r\n    font-size: 14px;\r\n    line-height: 1.45;\r\n  }\r\n\r\n  .ly-tc-toc__links a::before {\r\n    position: absolute;\r\n    top: 8px;\r\n    left: 0;\r\n    width: 6px;\r\n    height: 6px;\r\n    border-radius: 50%;\r\n    background: var(--ly-blue);\r\n    content: \"\";\r\n  }\r\n\r\n  .ly-tc-toc__links a:hover {\r\n    color: var(--ly-blue);\r\n  }\r\n\r\n  \/* PROTECTION OVERVIEW *\/\r\n  .ly-tc-protection-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(5, minmax(0, 1fr));\r\n    gap: 13px;\r\n    margin-top: 33px;\r\n  }\r\n\r\n  .ly-tc-protection {\r\n    padding: 18px 16px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-protection__label {\r\n    display: inline-flex;\r\n    margin-bottom: 10px;\r\n    padding: 5px 8px;\r\n    border-radius: 5px;\r\n    color: var(--ly-white);\r\n    background: var(--ly-blue);\r\n    font-size: 11px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-tc-protection:nth-child(2) .ly-tc-protection__label {\r\n    background: var(--ly-green);\r\n  }\r\n\r\n  .ly-tc-protection:nth-child(3) .ly-tc-protection__label {\r\n    background: var(--ly-orange);\r\n  }\r\n\r\n  .ly-tc-protection:nth-child(4) .ly-tc-protection__label {\r\n    background: #7159c8;\r\n  }\r\n\r\n  .ly-tc-protection:nth-child(5) .ly-tc-protection__label {\r\n    background: var(--ly-blue-dark);\r\n  }\r\n\r\n  .ly-tc-protection h3 {\r\n    margin-bottom: 7px;\r\n    font-size: 18px;\r\n  }\r\n\r\n  .ly-tc-protection p {\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.52;\r\n  }\r\n\r\n  \/* FIGURES *\/\r\n  .ly-tc-figure {\r\n    max-width: 1000px;\r\n    margin: 37px auto 0;\r\n  }\r\n\r\n  .ly-tc-figure__frame {\r\n    overflow: hidden;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 13px;\r\n    background: var(--ly-white);\r\n    box-shadow: var(--ly-shadow);\r\n  }\r\n\r\n  .ly-tc-figure__frame img {\r\n    width: 100%;\r\n    height: auto;\r\n    object-fit: contain;\r\n  }\r\n\r\n  .ly-tc-figure figcaption {\r\n    max-width: 900px;\r\n    margin: 13px auto 0;\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.55;\r\n    text-align: center;\r\n  }\r\n\r\n  \/* TABLES *\/\r\n  .ly-tc-table-shell {\r\n    width: 100%;\r\n    max-height: 70vh;\r\n    margin-top: 32px;\r\n    overflow: auto;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 12px;\r\n    background: var(--ly-white);\r\n    box-shadow: var(--ly-shadow-soft);\r\n    scrollbar-width: thin;\r\n    -webkit-overflow-scrolling: touch;\r\n  }\r\n\r\n  .ly-tc-table {\r\n    width: 100%;\r\n    min-width: 900px;\r\n    border-collapse: collapse;\r\n  }\r\n\r\n  .ly-tc-table th,\r\n  .ly-tc-table td {\r\n    padding: 15px 16px;\r\n    border-right: 1px solid var(--ly-line);\r\n    border-bottom: 1px solid var(--ly-line);\r\n    vertical-align: top;\r\n    text-align: left;\r\n  }\r\n\r\n  .ly-tc-table th:last-child,\r\n  .ly-tc-table td:last-child {\r\n    border-right: 0;\r\n  }\r\n\r\n  .ly-tc-table tr:last-child td {\r\n    border-bottom: 0;\r\n  }\r\n\r\n  .ly-tc-table thead th {\r\n    position: sticky;\r\n    top: 0;\r\n    z-index: 3;\r\n    color: var(--ly-white);\r\n    background: var(--ly-blue-dark);\r\n    font-size: 12.5px;\r\n    font-weight: 850;\r\n    line-height: 1.4;\r\n  }\r\n\r\n  .ly-tc-table tbody tr:nth-child(even) {\r\n    background: #f9fbfd;\r\n  }\r\n\r\n  .ly-tc-table tbody tr:hover {\r\n    background: #f1f6fb;\r\n  }\r\n\r\n  .ly-tc-table td {\r\n    color: var(--ly-body);\r\n    font-size: 14px;\r\n    line-height: 1.52;\r\n  }\r\n\r\n  .ly-tc-table td:first-child {\r\n    color: var(--ly-ink);\r\n    font-weight: 800;\r\n  }\r\n\r\n  \/* AC COMPACT PARAMETER SECTION *\/\r\n  .ly-tc-section-heading {\r\n    max-width: 870px;\r\n    margin-bottom: 28px;\r\n  }\r\n\r\n  .ly-tc-section-heading .ly-tc-lead {\r\n    margin-bottom: 0;\r\n  }\r\n\r\n  .ly-tc-param-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(3, minmax(0, 1fr));\r\n    gap: 14px;\r\n  }\r\n\r\n  .ly-tc-param-card {\r\n    display: grid;\r\n    grid-template-columns: 67px minmax(0, 1fr);\r\n    gap: 13px;\r\n    align-items: start;\r\n    min-height: 132px;\r\n    padding: 18px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-param-card > strong {\r\n    color: var(--ly-blue);\r\n    font-size: 15px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-tc-param-card b {\r\n    display: block;\r\n    margin-bottom: 4px;\r\n    color: var(--ly-ink);\r\n    font-size: 14.5px;\r\n    line-height: 1.4;\r\n  }\r\n\r\n  .ly-tc-param-card span {\r\n    display: block;\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.5;\r\n  }\r\n\r\n  \/* DECISION STEPS *\/\r\n  .ly-tc-steps {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    gap: 13px;\r\n    margin-top: 29px;\r\n  }\r\n\r\n  .ly-tc-step {\r\n    display: grid;\r\n    grid-template-columns: 41px minmax(0, 1fr);\r\n    gap: 14px;\r\n    align-items: start;\r\n    padding: 18px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-step__number {\r\n    display: flex;\r\n    width: 39px;\r\n    height: 39px;\r\n    align-items: center;\r\n    justify-content: center;\r\n    border-radius: 50%;\r\n    color: var(--ly-white);\r\n    background: var(--ly-blue);\r\n    font-size: 14px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-tc-step__content strong {\r\n    display: block;\r\n    margin-bottom: 5px;\r\n    color: var(--ly-ink);\r\n    font-size: 15px;\r\n  }\r\n\r\n  .ly-tc-step__content span {\r\n    display: block;\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.5;\r\n  }\r\n\r\n  \/* REMOTE ALARM *\/\r\n  .ly-tc-alarm {\r\n    display: grid;\r\n    grid-template-columns: minmax(210px, 0.85fr) 76px minmax(250px, 1.15fr);\r\n    gap: 16px;\r\n    align-items: center;\r\n    margin-top: 30px;\r\n  }\r\n\r\n  .ly-tc-alarm__unit {\r\n    padding: 23px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 11px;\r\n    background: var(--ly-white);\r\n    text-align: center;\r\n    box-shadow: var(--ly-shadow-soft);\r\n  }\r\n\r\n  .ly-tc-alarm__unit strong {\r\n    display: block;\r\n    margin-bottom: 6px;\r\n    font-size: 17px;\r\n  }\r\n\r\n  .ly-tc-alarm__unit span {\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n  }\r\n\r\n  .ly-tc-alarm__line {\r\n    position: relative;\r\n    height: 3px;\r\n    background: var(--ly-blue);\r\n  }\r\n\r\n  .ly-tc-alarm__line::after {\r\n    position: absolute;\r\n    top: 50%;\r\n    right: -1px;\r\n    width: 11px;\r\n    height: 11px;\r\n    border-top: 3px solid var(--ly-blue);\r\n    border-right: 3px solid var(--ly-blue);\r\n    content: \"\";\r\n    transform: translateY(-50%) rotate(45deg);\r\n  }\r\n\r\n  \/* GROUNDING *\/\r\n  .ly-tc-grounding {\r\n    padding: 30px;\r\n    border: 1px solid #c9dced;\r\n    border-radius: 13px;\r\n    background: var(--ly-blue-pale);\r\n  }\r\n\r\n  .ly-tc-grounding-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    gap: 14px;\r\n    margin-top: 23px;\r\n  }\r\n\r\n  .ly-tc-grounding-item {\r\n    padding: 19px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-grounding-item h3 {\r\n    font-size: 19px;\r\n  }\r\n\r\n  .ly-tc-grounding-item p {\r\n    color: var(--ly-muted);\r\n    font-size: 14px;\r\n  }\r\n\r\n  \/* ENVIRONMENT *\/\r\n  .ly-tc-environment {\r\n    display: grid;\r\n    grid-template-columns: 1fr auto 1fr;\r\n    gap: 18px;\r\n    align-items: stretch;\r\n    margin-top: 30px;\r\n    margin-bottom: 40px;\r\n  }\r\n\r\n  .ly-tc-environment__side {\r\n    padding: 24px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 12px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-environment__vs {\r\n    display: flex;\r\n    width: 52px;\r\n    height: 52px;\r\n    align-items: center;\r\n    align-self: center;\r\n    justify-content: center;\r\n    border-radius: 50%;\r\n    color: var(--ly-white);\r\n    background: var(--ly-blue);\r\n    font-size: 11px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  #environment .ly-tc-figure {\r\n    margin-top: 0 !important;\r\n  }\r\n\r\n  \/* PRODUCT MAPPING *\/\r\n  .ly-tc-product-map {\r\n    display: grid;\r\n    gap: 12px;\r\n    margin-top: 30px;\r\n  }\r\n\r\n  .ly-tc-product-row {\r\n    display: grid;\r\n    grid-template-columns: 145px minmax(0, 1fr) minmax(220px, 0.65fr);\r\n    gap: 17px;\r\n    align-items: start;\r\n    padding: 18px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-product-row__family {\r\n    color: var(--ly-blue);\r\n    font-size: 15px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-tc-product-row__use,\r\n  .ly-tc-product-row__confirm {\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.5;\r\n  }\r\n\r\n  .ly-tc-product-row__use strong,\r\n  .ly-tc-product-row__confirm strong {\r\n    display: block;\r\n    margin-bottom: 3px;\r\n    font-size: 13px;\r\n  }\r\n\r\n  \/* SUPPLIER EVIDENCE *\/\r\n  .ly-tc-evidence {\r\n    display: grid;\r\n    grid-template-columns: repeat(3, minmax(0, 1fr));\r\n    gap: 16px;\r\n    margin-top: 30px;\r\n  }\r\n\r\n  .ly-tc-evidence__item {\r\n    padding: 21px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 11px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-evidence__item h3 {\r\n    font-size: 19px;\r\n  }\r\n\r\n  .ly-tc-evidence__item p {\r\n    color: var(--ly-muted);\r\n    font-size: 14px;\r\n    line-height: 1.55;\r\n  }\r\n\r\n  \/* MAINTENANCE *\/\r\n  .ly-tc-maintenance-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    gap: 16px;\r\n    margin-top: 29px;\r\n  }\r\n\r\n  .ly-tc-maintenance-card {\r\n    display: grid;\r\n    grid-template-columns: 46px minmax(0, 1fr);\r\n    gap: 16px;\r\n    align-items: start;\r\n    min-height: 150px;\r\n    padding: 21px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 11px;\r\n    background: var(--ly-white);\r\n    box-shadow: var(--ly-shadow-soft);\r\n  }\r\n\r\n  .ly-tc-maintenance-card__number {\r\n    display: flex;\r\n    width: 42px;\r\n    height: 42px;\r\n    align-items: center;\r\n    justify-content: center;\r\n    border-radius: 9px;\r\n    color: #ffffff;\r\n    background: var(--ly-blue);\r\n    font-size: 12px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-tc-maintenance-card h3 {\r\n    margin-bottom: 7px;\r\n    font-size: 20px;\r\n    line-height: 1.3;\r\n  }\r\n\r\n  .ly-tc-maintenance-card p {\r\n    margin: 0;\r\n    color: var(--ly-muted);\r\n    font-size: 14.5px;\r\n    line-height: 1.55;\r\n  }\r\n\r\n  .ly-tc-related-line {\r\n    margin-top: 22px;\r\n    color: var(--ly-muted);\r\n    font-size: 14.5px;\r\n  }\r\n\r\n  \/* CHECKLIST *\/\r\n  .ly-tc-checklist {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    gap: 11px;\r\n    margin-top: 30px;\r\n  }\r\n\r\n  .ly-tc-checkitem {\r\n    display: grid;\r\n    grid-template-columns: 25px minmax(0, 1fr);\r\n    gap: 12px;\r\n    align-items: start;\r\n    padding: 16px 17px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 9px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-checkitem::before {\r\n    display: flex;\r\n    width: 24px;\r\n    height: 24px;\r\n    align-items: center;\r\n    justify-content: center;\r\n    border-radius: 50%;\r\n    color: var(--ly-white);\r\n    background: var(--ly-green);\r\n    content: \"\u2713\";\r\n    font-size: 12px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-tc-checkitem strong {\r\n    display: block;\r\n    margin-bottom: 3px;\r\n    font-size: 14.5px;\r\n  }\r\n\r\n  .ly-tc-checkitem span {\r\n    display: block;\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.48;\r\n  }\r\n\r\n  \/* CTA *\/\r\n  .ly-tc-cta {\r\n    margin-top: 33px;\r\n    padding: 30px;\r\n    border: 1px solid #bfd5eb;\r\n    border-radius: 13px;\r\n    background: linear-gradient(145deg, #f8fbff, #edf5fd);\r\n  }\r\n\r\n  .ly-tc-cta__grid {\r\n    display: grid;\r\n    grid-template-columns: minmax(0, 1fr) auto;\r\n    gap: 27px;\r\n    align-items: center;\r\n  }\r\n\r\n  .ly-tc-cta h2 {\r\n    margin-bottom: 9px;\r\n    font-size: clamp(26px, 2.7vw, 34px);\r\n  }\r\n\r\n  .ly-tc-cta p {\r\n    max-width: 750px;\r\n    color: var(--ly-muted);\r\n  }\r\n\r\n  \/* RELATED GUIDES *\/\r\n  .ly-tc-related {\r\n    display: grid;\r\n    grid-template-columns: repeat(3, minmax(0, 1fr));\r\n    gap: 15px;\r\n    margin-top: 30px;\r\n  }\r\n\r\n  .ly-tc-related__item {\r\n    display: block;\r\n    height: 100%;\r\n    padding: 20px;\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    color: var(--ly-ink) !important;\r\n    background: var(--ly-white);\r\n    transition:\r\n      border-color 0.2s ease,\r\n      box-shadow 0.2s ease,\r\n      transform 0.2s ease;\r\n  }\r\n\r\n  .ly-tc-related__item:hover {\r\n    border-color: #a8c8e7;\r\n    box-shadow: var(--ly-shadow-soft);\r\n    text-decoration: none;\r\n    transform: translateY(-2px);\r\n  }\r\n\r\n  .ly-tc-related__item strong {\r\n    display: block;\r\n    margin-bottom: 6px;\r\n    color: var(--ly-blue);\r\n    font-size: 16px;\r\n  }\r\n\r\n  .ly-tc-related__item span {\r\n    display: block;\r\n    color: var(--ly-muted);\r\n    font-size: 13.5px;\r\n    line-height: 1.5;\r\n  }\r\n\r\n  \/* FAQ *\/\r\n  .ly-tc-faq {\r\n    display: grid;\r\n    gap: 11px;\r\n    max-width: 880px;\r\n    margin-top: 30px;\r\n  }\r\n\r\n  .ly-tc-faq details {\r\n    border: 1px solid var(--ly-line);\r\n    border-radius: 10px;\r\n    background: var(--ly-white);\r\n  }\r\n\r\n  .ly-tc-faq summary {\r\n    position: relative;\r\n    padding: 18px 55px 18px 20px;\r\n    color: var(--ly-ink);\r\n    font-weight: 800;\r\n    cursor: pointer;\r\n    list-style: none;\r\n  }\r\n\r\n  .ly-tc-faq summary::-webkit-details-marker {\r\n    display: none;\r\n  }\r\n\r\n  .ly-tc-faq summary::after {\r\n    position: absolute;\r\n    top: 50%;\r\n    right: 20px;\r\n    color: var(--ly-blue);\r\n    content: \"+\";\r\n    font-size: 24px;\r\n    font-weight: 500;\r\n    transform: translateY(-50%);\r\n  }\r\n\r\n  .ly-tc-faq details[open] summary::after {\r\n    content: \"\u2212\";\r\n  }\r\n\r\n  .ly-tc-faq__body {\r\n    padding: 0 20px 20px;\r\n    color: var(--ly-muted);\r\n  }\r\n\r\n  \/* REFERENCES *\/\r\n  .ly-tc-references {\r\n    font-size: 14px;\r\n  }\r\n\r\n  .ly-tc-references li {\r\n    color: var(--ly-muted);\r\n    overflow-wrap: anywhere;\r\n  }\r\n\r\n  .ly-tc-references a {\r\n    font-weight: 750;\r\n  }\r\n\r\n  .ly-tc-disclaimer {\r\n    margin-top: 28px;\r\n    padding-top: 21px;\r\n    border-top: 1px solid var(--ly-line);\r\n    color: #747e8e;\r\n    font-size: 13px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  \/* 1440 *\/\r\n  @media (max-width: 1440px) {\r\n    .ly-tc-container {\r\n      width: min(1060px, calc(100% - 50px));\r\n    }\r\n  }\r\n\r\n  \/* 1366 *\/\r\n  @media (max-width: 1366px) {\r\n    .ly-tc-container {\r\n      width: min(1030px, calc(100% - 46px));\r\n    }\r\n\r\n    .ly-tc-section {\r\n      padding: 74px 0;\r\n    }\r\n  }\r\n\r\n  \/* 1280 *\/\r\n  @media (max-width: 1280px) {\r\n    .ly-tc-container {\r\n      width: min(1000px, calc(100% - 42px));\r\n    }\r\n\r\n    .ly-tc-protection-grid {\r\n      grid-template-columns: repeat(3, minmax(0, 1fr));\r\n    }\r\n\r\n    .ly-tc-grid--4 {\r\n      grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    }\r\n  }\r\n\r\n  \/* 1024 *\/\r\n  @media (max-width: 1024px) {\r\n    .ly-tc-container {\r\n      width: min(940px, calc(100% - 36px));\r\n    }\r\n\r\n    .ly-tc-section {\r\n      padding: 68px 0;\r\n    }\r\n\r\n    .ly-tc-toc__links {\r\n      grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    }\r\n\r\n    .ly-tc-related,\r\n    .ly-tc-evidence {\r\n      grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    }\r\n\r\n    .ly-tc-table {\r\n      min-width: 820px;\r\n    }\r\n  }\r\n\r\n  \/* 912 *\/\r\n  @media (max-width: 912px) {\r\n    .ly-tc-container {\r\n      width: min(850px, calc(100% - 32px));\r\n    }\r\n\r\n    .ly-tc-param-grid {\r\n      grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    }\r\n\r\n    .ly-tc-product-row {\r\n      grid-template-columns: 130px minmax(0, 1fr);\r\n    }\r\n\r\n    .ly-tc-product-row__confirm {\r\n      grid-column: 2;\r\n    }\r\n\r\n    .ly-tc-cta__grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n  }\r\n\r\n  \/* 820 *\/\r\n  @media (max-width: 820px) {\r\n    .ly-tc-section {\r\n      padding: 62px 0;\r\n    }\r\n\r\n    .ly-tc-grid--2,\r\n    .ly-tc-grid--3,\r\n    .ly-tc-related,\r\n    .ly-tc-evidence {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-protection-grid {\r\n      grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    }\r\n\r\n    .ly-tc-alarm {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-alarm__line {\r\n      width: 3px;\r\n      height: 48px;\r\n      margin: 0 auto;\r\n    }\r\n\r\n    .ly-tc-alarm__line::after {\r\n      top: auto;\r\n      right: 50%;\r\n      bottom: -1px;\r\n      transform: translateX(50%) rotate(135deg);\r\n    }\r\n\r\n    .ly-tc-environment {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-environment__vs {\r\n      margin: 0 auto;\r\n    }\r\n  }\r\n\r\n  \/* 768 *\/\r\n  @media (max-width: 768px) {\r\n    .ly-tc {\r\n      font-size: 16px;\r\n    }\r\n\r\n    .ly-tc-container {\r\n      width: min(100% - 28px, 720px);\r\n    }\r\n\r\n    .ly-tc-opening {\r\n      padding-top: 12px;\r\n    }\r\n\r\n    .ly-tc-section {\r\n      padding: 57px 0;\r\n    }\r\n\r\n    .ly-tc-toc__links {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-checklist,\r\n    .ly-tc-grounding-grid,\r\n    .ly-tc-maintenance-grid {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-maintenance-card {\r\n      min-height: 0;\r\n    }\r\n\r\n    #environment .ly-tc-environment {\r\n      margin-bottom: 30px;\r\n    }\r\n\r\n    .ly-tc-table-shell {\r\n      max-height: none;\r\n      overflow: visible;\r\n      border: 0;\r\n      border-radius: 0;\r\n      background: transparent;\r\n      box-shadow: none;\r\n    }\r\n\r\n    .ly-tc-table {\r\n      display: block;\r\n      min-width: 0;\r\n    }\r\n\r\n    .ly-tc-table thead {\r\n      display: none;\r\n    }\r\n\r\n    .ly-tc-table tbody,\r\n    .ly-tc-table tr,\r\n    .ly-tc-table td {\r\n      display: block;\r\n      width: 100%;\r\n    }\r\n\r\n    .ly-tc-table tbody {\r\n      display: grid;\r\n      gap: 13px;\r\n    }\r\n\r\n    .ly-tc-table tr,\r\n    .ly-tc-table tbody tr:nth-child(even),\r\n    .ly-tc-table tbody tr:hover {\r\n      overflow: hidden;\r\n      border: 1px solid var(--ly-line);\r\n      border-radius: 11px;\r\n      background: var(--ly-white);\r\n      box-shadow: var(--ly-shadow-soft);\r\n    }\r\n\r\n    .ly-tc-table td {\r\n      display: grid;\r\n      grid-template-columns: minmax(110px, 0.4fr) minmax(0, 0.6fr);\r\n      gap: 13px;\r\n      padding: 12px 14px;\r\n      border-right: 0;\r\n      border-bottom: 1px solid var(--ly-line);\r\n      font-size: 13.5px;\r\n    }\r\n\r\n    .ly-tc-table td::before {\r\n      color: var(--ly-blue-dark);\r\n      content: attr(data-label);\r\n      font-size: 11.5px;\r\n      font-weight: 850;\r\n      line-height: 1.4;\r\n      text-transform: uppercase;\r\n    }\r\n\r\n    .ly-tc-table td:last-child {\r\n      border-bottom: 0;\r\n    }\r\n\r\n    .ly-tc-figure figcaption {\r\n      text-align: left;\r\n    }\r\n  }\r\n\r\n  \/* 600 *\/\r\n  @media (max-width: 600px) {\r\n    .ly-tc-container {\r\n      width: min(100% - 24px, 570px);\r\n    }\r\n\r\n    .ly-tc-actions {\r\n      align-items: stretch;\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-tc-btn,\r\n    .ly-tc a.ly-tc-btn {\r\n      width: 100%;\r\n      min-height: 50px;\r\n    }\r\n\r\n    .ly-tc-protection-grid,\r\n    .ly-tc-param-grid,\r\n    .ly-tc-steps {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-param-card {\r\n      min-height: 0;\r\n    }\r\n\r\n    .ly-tc-product-row {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-tc-product-row__confirm {\r\n      grid-column: auto;\r\n    }\r\n\r\n    .ly-tc-quick-answer,\r\n    .ly-tc-cta,\r\n    .ly-tc-grounding {\r\n      padding: 22px;\r\n    }\r\n  }\r\n\r\n  \/* 540 *\/\r\n  @media (max-width: 540px) {\r\n    .ly-tc h2 {\r\n      font-size: 31px;\r\n    }\r\n\r\n    .ly-tc h3 {\r\n      font-size: 21px;\r\n    }\r\n\r\n    .ly-tc-lead {\r\n      font-size: 17px;\r\n    }\r\n\r\n    .ly-tc-table td {\r\n      grid-template-columns: 1fr;\r\n      gap: 4px;\r\n    }\r\n  }\r\n\r\n  \/* 480 *\/\r\n  @media (max-width: 480px) {\r\n    .ly-tc-container {\r\n      width: min(100% - 22px, 456px);\r\n    }\r\n\r\n    .ly-tc-section {\r\n      padding: 52px 0;\r\n    }\r\n\r\n    .ly-tc-card,\r\n    .ly-tc-toc__box,\r\n    .ly-tc-environment__side {\r\n      padding: 19px;\r\n    }\r\n\r\n    #environment .ly-tc-environment {\r\n      margin-bottom: 24px;\r\n    }\r\n\r\n    .ly-tc-figure__frame {\r\n      border-radius: 10px;\r\n    }\r\n  }\r\n\r\n  \/* 430 *\/\r\n  @media (max-width: 430px) {\r\n    .ly-tc-container {\r\n      width: min(100% - 20px, 410px);\r\n    }\r\n\r\n    .ly-tc-maintenance-card {\r\n      grid-template-columns: 1fr;\r\n      gap: 11px;\r\n      padding: 18px;\r\n    }\r\n\r\n    .ly-tc-param-card {\r\n      grid-template-columns: 1fr;\r\n      gap: 5px;\r\n      padding: 16px;\r\n    }\r\n  }\r\n\r\n  \/* 414 *\/\r\n  @media (max-width: 414px) {\r\n    .ly-tc h2 {\r\n      font-size: 29px;\r\n    }\r\n\r\n    .ly-tc-note,\r\n    .ly-tc-warning,\r\n    .ly-tc-success {\r\n      padding: 15px;\r\n    }\r\n  }\r\n\r\n  \/* 390 *\/\r\n  @media (max-width: 390px) {\r\n    .ly-tc-container {\r\n      width: min(100% - 18px, 372px);\r\n    }\r\n\r\n    .ly-tc-quick-answer,\r\n    .ly-tc-cta,\r\n    .ly-tc-grounding {\r\n      padding: 19px;\r\n    }\r\n  }\r\n\r\n  \/* 375 *\/\r\n  @media (max-width: 375px) {\r\n    .ly-tc h2 {\r\n      font-size: 28px;\r\n    }\r\n\r\n    .ly-tc-card {\r\n      padding: 18px;\r\n    }\r\n  }\r\n\r\n  \/* 360 *\/\r\n  @media (max-width: 360px) {\r\n    .ly-tc-container {\r\n      width: min(100% - 16px, 344px);\r\n    }\r\n\r\n    .ly-tc-checkitem {\r\n      grid-template-columns: 23px minmax(0, 1fr);\r\n      gap: 9px;\r\n    }\r\n  }\r\n\r\n  \/* 320 *\/\r\n  @media (max-width: 320px) {\r\n    .ly-tc-container {\r\n      width: calc(100% - 14px);\r\n    }\r\n\r\n    .ly-tc {\r\n      font-size: 15px;\r\n    }\r\n\r\n    .ly-tc h2 {\r\n      font-size: 26px;\r\n    }\r\n\r\n    .ly-tc-btn,\r\n    .ly-tc a.ly-tc-btn {\r\n      padding-right: 15px;\r\n      padding-left: 15px;\r\n      font-size: 13px;\r\n    }\r\n  }\r\n\r\n  @media (prefers-reduced-motion: reduce) {\r\n    .ly-tc *,\r\n    .ly-tc *::before,\r\n    .ly-tc *::after {\r\n      scroll-behavior: auto !important;\r\n      transition: none !important;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<article class=\"ly-tc\">\r\n  <!-- QUICK ANSWER -->\r\n  <section class=\"ly-tc-opening\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-quick-answer\">\r\n        <span class=\"ly-tc-quick-answer__label\">Quick Answer<\/span>\r\n\r\n        <p>\r\n          An outdoor telecom cabinet normally requires more than one SPD.\r\n          Protect each conductive AC, DC, Ethernet and signal line according\r\n          to its actual voltage, interface, installation position and\r\n          grounding arrangement.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-actions\">\r\n        <a\r\n          class=\"ly-tc-btn leeyee-site-popup-btn\"\r\n          href=\"javascript:void(0);\"\r\n        >\r\n          <span>Request Cabinet SPD Selection<\/span>\r\n        <\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- TABLE OF CONTENTS -->\r\n  <nav class=\"ly-tc-toc\" aria-label=\"Article contents\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-toc__box\">\r\n        <div class=\"ly-tc-toc__title\">In this guide<\/div>\r\n\r\n        <div class=\"ly-tc-toc__links\">\r\n          <a href=\"#protection-required\">Protection required<\/a>\r\n          <a href=\"#architecture\">Cabinet architecture<\/a>\r\n          <a href=\"#selection-matrix\">Selection matrix<\/a>\r\n          <a href=\"#ac-input\">AC input SPD<\/a>\r\n          <a href=\"#dc-power\">48V \/ \u221248V DC SPD<\/a>\r\n          <a href=\"#rj45-poe\">RJ45 and PoE<\/a>\r\n          <a href=\"#signal-lines\">Signal lines<\/a>\r\n          <a href=\"#remote-alarm\">Remote alarm<\/a>\r\n          <a href=\"#grounding\">Grounding and bonding<\/a>\r\n          <a href=\"#environment\">IP and condensation<\/a>\r\n          <a href=\"#product-mapping\">LEEYEE product mapping<\/a>\r\n          <a href=\"#maintenance\">Maintenance<\/a>\r\n          <a href=\"#procurement-checklist\">Procurement checklist<\/a>\r\n          <a href=\"#related-guides\">Related guides<\/a>\r\n          <a href=\"#references\">References<\/a>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/nav>\r\n\r\n  <!-- PROTECTION REQUIRED -->\r\n  <section class=\"ly-tc-section\" id=\"protection-required\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Start With the Cabinet Interfaces<\/div>\r\n\r\n        <div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#what-surge-protection-does-an-outdoor-telecom-cabinet-need\" >What surge protection does an outdoor telecom cabinet need?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#outdoor-telecom-cabinet-surge-protection-architecture\" >Outdoor telecom cabinet surge protection architecture<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#outdoor-telecom-cabinet-spd-selection-matrix\" >Outdoor telecom cabinet SPD selection matrix<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#ac-input-spd-selection\" >AC input SPD selection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#48v-%e2%88%9248v-dc-spd-selection\" >48V \/ \u221248V DC SPD selection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#rj45-and-poe-surge-protection\" >RJ45 and PoE surge protection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#rs485-sensor-and-monitoring-line-protection\" >RS485, sensor and monitoring line protection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#remote-alarm-contact-for-spd-status\" >Remote alarm contact for SPD status<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#grounding-and-bonding-affect-the-protection-achieved\" >Grounding and bonding affect the protection achieved<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#ip-rating-and-condensation-are-different-questions\" >IP rating and condensation are different questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#typical-leeyee-product-families-for-telecom-cabinets\" >Typical LEEYEE product families for telecom cabinets<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#what-buyers-should-verify-beyond-the-datasheet\" >What buyers should verify beyond the datasheet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#spd-maintenance-and-module-replacement\" >SPD Maintenance and Module Replacement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#information-to-send-before-requesting-a-quotation\" >Information to send before requesting a quotation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#need-an-initial-spd-recommendation\" >Need an initial SPD recommendation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#support-for-telecom-cabinet-oem-and-project-supply\" >Support for telecom cabinet OEM and project supply<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#continue-with-the-detailed-interface-guides\" >Continue with the detailed interface guides<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#outdoor-telecom-cabinet-spd-faq\" >Outdoor telecom cabinet SPD FAQ<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/#standards-and-technical-reference-framework\" >Standards and technical reference framework<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"what-surge-protection-does-an-outdoor-telecom-cabinet-need\"><\/span>What surge protection does an outdoor telecom cabinet need?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          Start by identifying every conductive cable entering or leaving the\r\n          enclosure. Do not start by selecting one general-purpose SPD.\r\n        <\/p>\r\n\r\n        <p>\r\n          AC power, low-voltage DC power and telecommunications or signalling\r\n          circuits are covered by different SPD requirements and test\r\n          frameworks.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-1\">[1]<\/a><\/sup>\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-2\">[2]<\/a><\/sup>\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-3\">[3]<\/a><\/sup>\r\n        <\/p>\r\n\r\n        <div class=\"ly-tc-warning\">\r\n          <strong>Do not substitute between circuits.<\/strong>\r\n          An AC SPD is not a 48V DC SPD. A DC power SPD is not automatically\r\n          suitable for an RJ45, PoE, RS485 or sensor line.\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-protection-grid\">\r\n        <article class=\"ly-tc-protection\">\r\n          <span class=\"ly-tc-protection__label\">AC SPD<\/span>\r\n          <h3>AC input<\/h3>\r\n          <p>\r\n            Protects the utility supply, AC distribution and rectifier input.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-protection\">\r\n          <span class=\"ly-tc-protection__label\">DC SPD<\/span>\r\n          <h3>48V \/ \u221248V DC<\/h3>\r\n          <p>\r\n            Protects the rectifier output, battery bus and DC distribution.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-protection\">\r\n          <span class=\"ly-tc-protection__label\">RJ45 \/ PoE<\/span>\r\n          <h3>Ethernet<\/h3>\r\n          <p>\r\n            Protects copper data lines while supporting the required speed\r\n            and PoE arrangement.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-protection\">\r\n          <span class=\"ly-tc-protection__label\">SIGNAL<\/span>\r\n          <h3>RS485 and sensors<\/h3>\r\n          <p>\r\n            Protects monitoring, alarm, control and environmental sensor\r\n            circuits.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-protection\">\r\n          <span class=\"ly-tc-protection__label\">STATUS<\/span>\r\n          <h3>Remote alarm<\/h3>\r\n          <p>\r\n            Reports an SPD status change to the cabinet monitoring system.\r\n          <\/p>\r\n        <\/article>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- ARCHITECTURE -->\r\n  <section class=\"ly-tc-section ly-tc-section--soft\" id=\"architecture\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Whole-Cabinet Design<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"outdoor-telecom-cabinet-surge-protection-architecture\"><\/span>Outdoor telecom cabinet surge protection architecture<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          Review every conductive line crossing the cabinet boundary. Place\r\n          the relevant SPD close to the cable entry or distribution point.\r\n        <\/p>\r\n\r\n        <p>\r\n          The SPDs, cabinet enclosure and relevant cable shields should be\r\n          integrated into the project earthing and bonding design.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-5\">[5]<\/a><\/sup>\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-6\">[6]<\/a><\/sup>\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <figure class=\"ly-tc-figure\">\r\n        <div class=\"ly-tc-figure__frame\">\r\n          <img loading=\"lazy\"\r\n            src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/outdoor-telecom-cabinet-spd-protection-architecture.webp\"\r\n            alt=\"Outdoor telecom cabinet SPD protection architecture for AC input 48V DC RJ45 PoE and signal lines\"\r\n            width=\"1448\"\r\n            height=\"1086\"\r\n            loading=\"lazy\"\r\n            decoding=\"async\"\r\n          \/>\r\n        <\/div>\r\n\r\n        <figcaption>\r\n          Typical cabinet architecture showing separate AC, DC, RJ45 or PoE\r\n          and signal-line SPDs connected to the cabinet grounding system.\r\n        <\/figcaption>\r\n      <\/figure>\r\n\r\n      <div class=\"ly-tc-note\">\r\n        <strong>Page scope:<\/strong>\r\n        This guide covers protection installed in or directly associated with\r\n        the cabinet. Tower air terminals, antenna feeders and complete site\r\n        lightning protection require a wider project assessment.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- SELECTION MATRIX -->\r\n  <section class=\"ly-tc-section\" id=\"selection-matrix\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Fast Engineering Comparison<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"outdoor-telecom-cabinet-spd-selection-matrix\"><\/span>Outdoor telecom cabinet SPD selection matrix<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          Define the protected circuit before comparing supplier models.\r\n          Products that fit the same DIN rail may still serve completely\r\n          different applications.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-table-shell\">\r\n        <table class=\"ly-tc-table\">\r\n          <thead>\r\n            <tr>\r\n              <th>Cabinet interface<\/th>\r\n              <th>Typical SPD category<\/th>\r\n              <th>Equipment protected<\/th>\r\n              <th>Parameters to confirm<\/th>\r\n              <th>Common purchasing error<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n\r\n          <tbody>\r\n            <tr>\r\n              <td data-label=\"Cabinet interface\">AC utility input<\/td>\r\n              <td data-label=\"SPD category\">\r\n                Type 1+2 or Type 2 AC SPD according to the project design\r\n              <\/td>\r\n              <td data-label=\"Equipment protected\">\r\n                AC distribution, rectifier, fan, heater and auxiliary AC loads\r\n              <\/td>\r\n              <td data-label=\"Parameters to confirm\">\r\n                Voltage, phases, earthing system, Uc, Iimp where required,\r\n                In, Imax, Up, poles and backup protection\r\n              <\/td>\r\n              <td data-label=\"Common error\">\r\n                Selecting only from the nominal AC voltage\r\n              <\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td data-label=\"Cabinet interface\">48V \/ \u221248V DC bus<\/td>\r\n              <td data-label=\"SPD category\">\r\n                Low-voltage DC SPD suitable for the actual telecom DC system\r\n              <\/td>\r\n              <td data-label=\"Equipment protected\">\r\n                Rectifier output, battery bus, DC distribution and telecom\r\n                loads\r\n              <\/td>\r\n              <td data-label=\"Parameters to confirm\">\r\n                Maximum continuous voltage, polarity, bonded conductor, Uc,\r\n                discharge ratings, Up and pole arrangement\r\n              <\/td>\r\n              <td data-label=\"Common error\">\r\n                Selecting only from the nominal \u201c48V\u201d description\r\n              <\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td data-label=\"Cabinet interface\">RJ45 Ethernet<\/td>\r\n              <td data-label=\"SPD category\">RJ45 data-line SPD<\/td>\r\n              <td data-label=\"Equipment protected\">\r\n                Ethernet switch, router, gateway, camera, radio and controller\r\n              <\/td>\r\n              <td data-label=\"Parameters to confirm\">\r\n                Data speed, cable category, shield, protected pairs, connector\r\n                arrangement and insertion loss\r\n              <\/td>\r\n              <td data-label=\"Common error\">\r\n                Assuming every RJ45 SPD supports Gigabit Ethernet\r\n              <\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td data-label=\"Cabinet interface\">PoE line<\/td>\r\n              <td data-label=\"SPD category\">\r\n                RJ45 SPD compatible with the required PoE arrangement\r\n              <\/td>\r\n              <td data-label=\"Equipment protected\">\r\n                Outdoor camera, wireless access point and PoE-powered device\r\n              <\/td>\r\n              <td data-label=\"Parameters to confirm\">\r\n                PoE method, power, powered pairs, current, speed and shielding\r\n              <\/td>\r\n              <td data-label=\"Common error\">\r\n                Assuming every data SPD supports the required PoE power\r\n              <\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td data-label=\"Cabinet interface\">\r\n                RS485, sensor or alarm\r\n              <\/td>\r\n              <td data-label=\"SPD category\">\r\n                Signal-line SPD matched to the interface\r\n              <\/td>\r\n              <td data-label=\"Equipment protected\">\r\n                RTU, controller, sensor, door alarm and remote I\/O\r\n              <\/td>\r\n              <td data-label=\"Parameters to confirm\">\r\n                Signal voltage, current, pair count, protocol, transmission\r\n                rate, shield and terminals\r\n              <\/td>\r\n              <td data-label=\"Common error\">\r\n                Replacing a signal SPD with a DC power SPD\r\n              <\/td>\r\n            <\/tr>\r\n\r\n            <tr>\r\n              <td data-label=\"Cabinet interface\">SPD status output<\/td>\r\n              <td data-label=\"SPD category\">\r\n                SPD with potential-free remote contact\r\n              <\/td>\r\n              <td data-label=\"Equipment protected\">\r\n                NMS, PLC, RTU or cabinet alarm controller receives the signal\r\n              <\/td>\r\n              <td data-label=\"Parameters to confirm\">\r\n                COM, NO and NC logic, contact rating and normal\/failure state\r\n              <\/td>\r\n              <td data-label=\"Common error\">\r\n                Ordering a standard version without remote signalling\r\n              <\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <figure class=\"ly-tc-figure\">\r\n        <div class=\"ly-tc-figure__frame\">\r\n          <img loading=\"lazy\"\r\n            src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/outdoor-telecom-cabinet-ac-dc-rj45-signal-spd-selection.webp\"\r\n            alt=\"Comparison of AC DC RJ45 PoE and signal SPD selection for outdoor telecom cabinets\"\r\n            width=\"1448\"\r\n            height=\"1086\"\r\n            loading=\"lazy\"\r\n            decoding=\"async\"\r\n          \/>\r\n        <\/div>\r\n\r\n        <figcaption>\r\n          AC power, low-voltage DC power, Ethernet and signal lines require\r\n          separate selection criteria.\r\n        <\/figcaption>\r\n      <\/figure>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- AC INPUT -->\r\n  <section class=\"ly-tc-section ly-tc-section--pale\" id=\"ac-input\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-section-heading\">\r\n        <div class=\"ly-tc-eyebrow\">Protection Point 01<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"ac-input-spd-selection\"><\/span>AC input SPD selection<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          The AC SPD protects the incoming utility supply and the AC side of\r\n          the rectifier. Selection and coordination should follow the actual\r\n          AC system, installation position and project protection concept.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-1\">[1]<\/a><\/sup>\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-8\">[8]<\/a><\/sup>\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-param-grid\">\r\n        <div class=\"ly-tc-param-card\">\r\n          <strong>Type<\/strong>\r\n          <div>\r\n            <b>Type 1+2 or Type 2<\/b>\r\n            <span>\r\n              Confirm the classification from the project lightning\r\n              protection and coordination design.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-param-card\">\r\n          <strong>Uc<\/strong>\r\n          <div>\r\n            <b>Maximum continuous operating voltage<\/b>\r\n            <span>\r\n              Match Uc to the actual supply voltage, tolerance and earthing\r\n              arrangement.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-param-card\">\r\n          <strong>Iimp<\/strong>\r\n          <div>\r\n            <b>Lightning impulse current<\/b>\r\n            <span>\r\n              Confirm the required 10\/350 \u03bcs value where Type 1 capability is\r\n              specified.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-param-card\">\r\n          <strong>In \/ Imax<\/strong>\r\n          <div>\r\n            <b>Discharge current ratings<\/b>\r\n            <span>\r\n              Compare products using the same waveform and classification.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-param-card\">\r\n          <strong>Up<\/strong>\r\n          <div>\r\n            <b>Voltage protection level<\/b>\r\n            <span>\r\n              Coordinate Up with the withstand level of the rectifier and\r\n              downstream equipment.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-param-card\">\r\n          <strong>Poles<\/strong>\r\n          <div>\r\n            <b>Protection-mode arrangement<\/b>\r\n            <span>\r\n              Confirm 1P+N, 2P, 3P+N, 3+1, 4P or another required\r\n              configuration.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-warning\">\r\n        <strong>Important:<\/strong>\r\n        The AC input SPD does not replace the DC, Ethernet or signal-line SPDs\r\n        installed downstream.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- DC POWER -->\r\n  <section class=\"ly-tc-section\" id=\"dc-power\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Protection Point 02<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"48v-%e2%88%9248v-dc-spd-selection\"><\/span>48V \/ \u221248V DC SPD selection<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          \u201c48V\u201d is a nominal system description. The real DC bus voltage may\r\n          be higher during rectifier operation and battery charging.\r\n        <\/p>\r\n\r\n        <p>\r\n          Select the SPD from the highest continuous DC voltage, polarity,\r\n          bonded conductor, protection modes and installation position.\r\n          IEC 61643-41:2025 provides the test framework for SPDs connected to\r\n          low-voltage DC circuits.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-2\">[2]<\/a><\/sup>\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-grid ly-tc-grid--4\" style=\"margin-top: 30px\">\r\n        <article class=\"ly-tc-card ly-tc-card--blue\">\r\n          <h3>Confirm voltage<\/h3>\r\n          <p>\r\n            Provide nominal voltage, rectifier range, battery charging range\r\n            and the highest continuous voltage.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card ly-tc-card--green\">\r\n          <h3>Confirm polarity<\/h3>\r\n          <p>\r\n            Identify DC+, RTN, DC\u2212 or \u221248V, PE and the conductor bonded to the\r\n            cabinet earth.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card ly-tc-card--orange\">\r\n          <h3>Confirm location<\/h3>\r\n          <p>\r\n            State whether the SPD is at the incoming feeder, rectifier output,\r\n            battery bus or DC distribution unit.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card ly-tc-card--blue\">\r\n          <h3>Confirm maintenance<\/h3>\r\n          <p>\r\n            Specify visual indication, replaceable modules and remote\r\n            signalling where required.\r\n          <\/p>\r\n        <\/article>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-warning\">\r\n        <strong>Do not use a high-voltage PV SPD as an automatic substitute.<\/strong>\r\n        A photovoltaic circuit and a low-voltage telecom DC bus have different\r\n        system conditions and voltage ranges.\r\n      <\/div>\r\n\r\n      <p style=\"margin-top: 22px\">\r\n        Read the detailed\r\n        <a href=\"\/48v-dc-spd-for-telecom\/\">\r\n          48V \/ \u221248V DC SPD for telecom guide\r\n        <\/a>\r\n        for the complete voltage and protection-mode process.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- RJ45 AND POE -->\r\n  <section class=\"ly-tc-section ly-tc-section--soft\" id=\"rj45-poe\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Protection Point 03<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"rj45-and-poe-surge-protection\"><\/span>RJ45 and PoE surge protection<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          An RJ45 connector does not define the complete technical\r\n          requirement.\r\n        <\/p>\r\n\r\n        <p>\r\n          IEC 61643-21:2025 covers telecommunications and signalling network\r\n          SPDs, including networks carrying power on the same line, such as\r\n          Power over Ethernet.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-3\">[3]<\/a><\/sup>\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-steps\">\r\n        <article class=\"ly-tc-step\">\r\n          <div class=\"ly-tc-step__number\">1<\/div>\r\n          <div class=\"ly-tc-step__content\">\r\n            <strong>What data speed is required?<\/strong>\r\n            <span>\r\n              Confirm 10\/100 Mbps, Gigabit Ethernet or another required\r\n              transmission rate.\r\n            <\/span>\r\n          <\/div>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-step\">\r\n          <div class=\"ly-tc-step__number\">2<\/div>\r\n          <div class=\"ly-tc-step__content\">\r\n            <strong>Does the cable carry PoE?<\/strong>\r\n            <span>\r\n              Confirm the PoE method, required power, operating current and\r\n              powered pairs.\r\n            <\/span>\r\n          <\/div>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-step\">\r\n          <div class=\"ly-tc-step__number\">3<\/div>\r\n          <div class=\"ly-tc-step__content\">\r\n            <strong>Is the cable shielded?<\/strong>\r\n            <span>\r\n              Confirm the shield termination and equipotential-bonding method.\r\n            <\/span>\r\n          <\/div>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-step\">\r\n          <div class=\"ly-tc-step__number\">4<\/div>\r\n          <div class=\"ly-tc-step__content\">\r\n            <strong>Where is the outdoor equipment?<\/strong>\r\n            <span>\r\n              Evaluate protection and bonding at both ends of the copper link.\r\n            <\/span>\r\n          <\/div>\r\n        <\/article>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-warning\">\r\n        <strong>Not every RJ45 SPD supports every PoE system.<\/strong>\r\n        A device may physically fit while having unsuitable bandwidth,\r\n        current capacity, protected pairs or shielding.\r\n      <\/div>\r\n\r\n      <p style=\"margin-top: 22px\">\r\n        Continue with the\r\n        <a href=\"\/rj45-surge-protector-selection\/\">\r\n          RJ45 surge protector selection guide\r\n        <\/a>\r\n        and the\r\n        <a href=\"\/poe-surge-protector\/\">\r\n          PoE surge protection guide\r\n        <\/a>.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- SIGNAL LINES -->\r\n  <section class=\"ly-tc-section\" id=\"signal-lines\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Protection Point 04<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"rs485-sensor-and-monitoring-line-protection\"><\/span>RS485, sensor and monitoring line protection<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          Outdoor telecom cabinets often contain door alarms, environmental\r\n          sensors, battery monitoring and remote-control interfaces.\r\n        <\/p>\r\n\r\n        <p>\r\n          Select the signal SPD from the protocol, voltage, pair count,\r\n          current, transmission requirement and terminal arrangement.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-grid ly-tc-grid--3\" style=\"margin-top: 29px\">\r\n        <article class=\"ly-tc-card ly-tc-card--blue\">\r\n          <h3>RS485 communication<\/h3>\r\n          <p>\r\n            Confirm signal voltage, pair count, data rate, current and cable\r\n            shielding.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card ly-tc-card--orange\">\r\n          <h3>Door and alarm lines<\/h3>\r\n          <p>\r\n            Review door contacts, security wiring and any control conductor\r\n            extending outside the cabinet.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card ly-tc-card--green\">\r\n          <h3>Environmental sensors<\/h3>\r\n          <p>\r\n            Match the SPD to the sensor supply, output signal, conductor\r\n            number and grounding method.\r\n          <\/p>\r\n        <\/article>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-warning\">\r\n        A signal circuit and a power circuit can share the same nominal\r\n        voltage while requiring different SPD characteristics.\r\n      <\/div>\r\n\r\n      <p style=\"margin-top: 22px\">\r\n        See the\r\n        <a href=\"\/rs485-spd-guide\/\">\r\n          RS485 surge protector selection guide\r\n        <\/a>\r\n        for protocol-specific guidance.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- REMOTE ALARM -->\r\n  <section class=\"ly-tc-section ly-tc-section--soft\" id=\"remote-alarm\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Unattended Cabinet Monitoring<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"remote-alarm-contact-for-spd-status\"><\/span>Remote alarm contact for SPD status<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          A visual indicator requires a site visit. An optional\r\n          potential-free contact allows the monitoring system to receive an\r\n          SPD status change remotely.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-alarm\">\r\n        <div class=\"ly-tc-alarm__unit\">\r\n          <strong>SPD Remote Contact<\/strong>\r\n          <span>COM \/ NO \/ NC potential-free terminals<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-alarm__line\" aria-hidden=\"true\"><\/div>\r\n\r\n        <div class=\"ly-tc-alarm__unit\">\r\n          <strong>NMS, PLC, RTU or Alarm Controller<\/strong>\r\n          <span>Receives the status signal for maintenance reporting<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-grid ly-tc-grid--3\" style=\"margin-top: 28px\">\r\n        <article class=\"ly-tc-card\">\r\n          <h3>Define the logic<\/h3>\r\n          <p>\r\n            Confirm which contact state represents normal operation, module\r\n            removal or SPD failure.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card\">\r\n          <h3>Check the rating<\/h3>\r\n          <p>\r\n            Verify that the controller input voltage and current are within\r\n            the contact rating.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-card\">\r\n          <h3>Test commissioning<\/h3>\r\n          <p>\r\n            Verify the complete alarm path from the SPD to the remote\r\n            monitoring platform.\r\n          <\/p>\r\n        <\/article>\r\n      <\/div>\r\n\r\n      <p style=\"margin-top: 22px\">\r\n        See the\r\n        <a href=\"\/spd-remote-alarm-plc\/\">\r\n          SPD remote alarm and PLC wiring guide\r\n        <\/a>.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- GROUNDING -->\r\n  <section class=\"ly-tc-section\" id=\"grounding\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-grounding\">\r\n        <div class=\"ly-tc-prose\">\r\n          <div class=\"ly-tc-eyebrow\">The Surge Discharge Path<\/div>\r\n\r\n          <h2><span class=\"ez-toc-section\" id=\"grounding-and-bonding-affect-the-protection-achieved\"><\/span>Grounding and bonding affect the protection achieved<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n          <p class=\"ly-tc-lead\">\r\n            The internal cabinet grounding bar must be integrated into the\r\n            wider site earthing and bonding system.\r\n          <\/p>\r\n\r\n          <p>\r\n            ITU-T K.56 and K.112 provide telecommunications-sector guidance\r\n            related to lightning protection, earthing and bonding for radio\r\n            base station environments.\r\n            <sup class=\"ly-tc-cite\"><a href=\"#ref-5\">[5]<\/a><\/sup>\r\n            <sup class=\"ly-tc-cite\"><a href=\"#ref-6\">[6]<\/a><\/sup>\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-grounding-grid\">\r\n          <article class=\"ly-tc-grounding-item\">\r\n            <h3>Use coordinated bonding<\/h3>\r\n            <p>\r\n              Integrate the SPDs, metal enclosure and relevant cable shields\r\n              into the project bonding design.\r\n            <\/p>\r\n          <\/article>\r\n\r\n          <article class=\"ly-tc-grounding-item\">\r\n            <h3>Keep paths short<\/h3>\r\n            <p>\r\n              Avoid long conductors, unnecessary loops and indirect routes\r\n              between the SPD and grounding bar.\r\n            <\/p>\r\n          <\/article>\r\n\r\n          <article class=\"ly-tc-grounding-item\">\r\n            <h3>Separate cable routes<\/h3>\r\n            <p>\r\n              Avoid routing incoming unprotected conductors beside protected\r\n              outgoing conductors.\r\n            <\/p>\r\n          <\/article>\r\n\r\n          <article class=\"ly-tc-grounding-item\">\r\n            <h3>Connect to site earth<\/h3>\r\n            <p>\r\n              An internal copper bar cannot replace a complete site earthing\r\n              system.\r\n            <\/p>\r\n          <\/article>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <p style=\"margin-top: 22px\">\r\n        Related resources:\r\n        <a href=\"\/spd-cable-length-0-5m\/\">\r\n          SPD connection cable length\r\n        <\/a>\r\n        and\r\n        <a href=\"\/spd-grounding-resistance\/\">\r\n          SPD grounding requirements\r\n        <\/a>.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- ENVIRONMENT -->\r\n  <section class=\"ly-tc-section ly-tc-section--soft\" id=\"environment\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Outdoor Cabinet Environment<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"ip-rating-and-condensation-are-different-questions\"><\/span>IP rating and condensation are different questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          An IP-rated enclosure can protect against defined dust and water\r\n          ingress conditions. It does not automatically solve internal\r\n          condensation.\r\n        <\/p>\r\n\r\n        <p>\r\n          IEC 60529 defines enclosure degrees of protection using the IP Code.\r\n          The classification does not define the complete internal\r\n          temperature, humidity or condensation-control strategy.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-7\">[7]<\/a><\/sup>\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-environment\">\r\n        <div class=\"ly-tc-environment__side\">\r\n          <h3>External ingress control<\/h3>\r\n\r\n          <ul>\r\n            <li>Cabinet IP classification<\/li>\r\n            <li>Door seals and gaskets<\/li>\r\n            <li>Cable glands and entry plates<\/li>\r\n            <li>Rain hood and drainage design<\/li>\r\n            <li>Corrosion-resistant materials<\/li>\r\n            <li>UV, salt-air and pollution exposure<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-environment__vs\">AND<\/div>\r\n\r\n        <div class=\"ly-tc-environment__side\">\r\n          <h3>Internal climate control<\/h3>\r\n\r\n          <ul>\r\n            <li>Day and night temperature changes<\/li>\r\n            <li>Humidity and dew-point conditions<\/li>\r\n            <li>Heating or dehumidification<\/li>\r\n            <li>Ventilation or heat exchanger<\/li>\r\n            <li>Cold surfaces and thermal bridges<\/li>\r\n            <li>Moisture and corrosion inspection<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <figure class=\"ly-tc-figure\">\r\n        <div class=\"ly-tc-figure__frame\">\r\n          <img loading=\"lazy\"\r\n            src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/outdoor-telecom-cabinet-spd-environment-maintenance-checklist.webp\"\r\n            alt=\"Outdoor telecom cabinet SPD grounding condensation remote alarm and maintenance checklist\"\r\n            width=\"1448\"\r\n            height=\"1086\"\r\n            loading=\"lazy\"\r\n            decoding=\"async\"\r\n          \/>\r\n        <\/div>\r\n\r\n        <figcaption>\r\n          Cabinet reliability depends on enclosure sealing, condensation\r\n          control, grounding, status monitoring and maintenance access.\r\n        <\/figcaption>\r\n      <\/figure>\r\n\r\n      <div class=\"ly-tc-warning\">\r\n        <strong>Important:<\/strong>\r\n        An IP-rated cabinet does not automatically make every internal SPD\r\n        suitable for direct outdoor exposure. Confirm the environmental\r\n        limits for the selected product.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- PRODUCT MAPPING -->\r\n  <section class=\"ly-tc-section\" id=\"product-mapping\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">LEEYEE Preliminary Mapping<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"typical-leeyee-product-families-for-telecom-cabinets\"><\/span>Typical LEEYEE product families for telecom cabinets<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          This mapping helps buyers identify the likely product family. It is\r\n          not a universal model-substitution table.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-product-map\">\r\n        <div class=\"ly-tc-product-row\">\r\n          <div class=\"ly-tc-product-row__family\">LY1-C40 Series<\/div>\r\n\r\n          <div class=\"ly-tc-product-row__use\">\r\n            <strong>Typical use<\/strong>\r\n            Type 2 AC protection for selected distribution and rectifier-input\r\n            applications.\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__confirm\">\r\n            <strong>Confirm before ordering<\/strong>\r\n            Uc, poles, In, Imax, Up, earthing system and remote-contact option.\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-product-row\">\r\n          <div class=\"ly-tc-product-row__family\">LY1-C401S1<\/div>\r\n\r\n          <div class=\"ly-tc-product-row__use\">\r\n            <strong>Typical use<\/strong>\r\n            Compact 1P+N AC protection where this arrangement matches the\r\n            single-phase cabinet design.\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__confirm\">\r\n            <strong>Confirm before ordering<\/strong>\r\n            System voltage, earthing method, installation position and backup\r\n            protection.\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-product-row\">\r\n          <div class=\"ly-tc-product-row__family\">LY1-12.5 Series<\/div>\r\n\r\n          <div class=\"ly-tc-product-row__use\">\r\n            <strong>Typical use<\/strong>\r\n            AC Type 1+2 protection where the project requires declared\r\n            lightning-current capability.\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__confirm\">\r\n            <strong>Confirm before ordering<\/strong>\r\n            Iimp, Uc, poles, Up, upstream protection and installation\r\n            position.\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-product-row\">\r\n          <div class=\"ly-tc-product-row__family\">\r\n            Low-Voltage DC Range\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__use\">\r\n            <strong>Typical use<\/strong>\r\n            48V or \u221248V DC feeder, rectifier output, battery bus and DC\r\n            distribution protection.\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__confirm\">\r\n            <strong>Confirm before ordering<\/strong>\r\n            Highest continuous voltage, polarity, bonded conductor, poles and\r\n            remote signalling.\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-product-row\">\r\n          <div class=\"ly-tc-product-row__family\">\r\n            RJ45 \/ PoE Range\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__use\">\r\n            <strong>Typical use<\/strong>\r\n            Copper Ethernet, outdoor cameras, wireless equipment and\r\n            monitoring interfaces.\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__confirm\">\r\n            <strong>Confirm before ordering<\/strong>\r\n            Data speed, PoE method, power, protected pairs, shielding and\r\n            connectors.\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-product-row\">\r\n          <div class=\"ly-tc-product-row__family\">LY10 Signal SPD<\/div>\r\n\r\n          <div class=\"ly-tc-product-row__use\">\r\n            <strong>Typical use<\/strong>\r\n            RS485, sensors, control circuits and industrial communication\r\n            lines.\r\n          <\/div>\r\n\r\n          <div class=\"ly-tc-product-row__confirm\">\r\n            <strong>Confirm before ordering<\/strong>\r\n            Signal voltage, pair count, current, transmission requirement and\r\n            terminal layout.\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-note\">\r\n        <strong>Final model confirmation:<\/strong>\r\n        Send the cabinet diagram, system voltage, interfaces, grounding\r\n        arrangement and document requirements before approving the exact\r\n        model.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- SUPPLIER EVIDENCE -->\r\n  <section class=\"ly-tc-section ly-tc-section--pale\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Supplier Verification<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"what-buyers-should-verify-beyond-the-datasheet\"><\/span>What buyers should verify beyond the datasheet<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          A technically suitable SPD still needs product documentation,\r\n          manufacturing control and sample confirmation before bulk ordering.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-evidence\">\r\n        <article class=\"ly-tc-evidence__item\">\r\n          <h3>Component and product testing<\/h3>\r\n          <p>\r\n            LEEYEE testing capability includes MOV and GDT testing, impulse\r\n            equipment, thermal stability testing and combination-wave testing.\r\n            Applicable tests depend on the product category and test plan.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-evidence__item\">\r\n          <h3>Document-scope confirmation<\/h3>\r\n          <p>\r\n            Confirm that the datasheet, certificate or report applies to the\r\n            exact model, voltage, pole arrangement and declared ratings being\r\n            ordered.\r\n          <\/p>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-evidence__item\">\r\n          <h3>Sample approval<\/h3>\r\n          <p>\r\n            Verify terminal arrangement, DIN-rail space, remote contact,\r\n            labels and replacement modules before bulk production.\r\n          <\/p>\r\n        <\/article>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-warning\">\r\n        One certificate or test photograph should not be assumed to cover\r\n        every AC, DC, RJ45, PoE or signal SPD.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- MAINTENANCE -->\r\n  <section class=\"ly-tc-section\" id=\"maintenance\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Lifecycle Planning<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"spd-maintenance-and-module-replacement\"><\/span>SPD Maintenance and Module Replacement<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          Plan routine inspections, remote alarm tests and compatible module\r\n          replacement without rebuilding the cabinet distribution section.\r\n        <\/p>\r\n\r\n        <p>\r\n          IEC 61643-22 addresses selection, location, coordination and\r\n          operational considerations for telecommunications and signalling\r\n          network SPDs.\r\n          <sup class=\"ly-tc-cite\"><a href=\"#ref-4\">[4]<\/a><\/sup>\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-maintenance-grid\">\r\n        <article class=\"ly-tc-maintenance-card\">\r\n          <div class=\"ly-tc-maintenance-card__number\">01<\/div>\r\n\r\n          <div>\r\n            <h3>Routine Inspection<\/h3>\r\n            <p>\r\n              Check status indicators, terminals, wiring, overheating,\r\n              contamination, moisture and corrosion.\r\n            <\/p>\r\n          <\/div>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-maintenance-card\">\r\n          <div class=\"ly-tc-maintenance-card__number\">02<\/div>\r\n\r\n          <div>\r\n            <h3>Remote Alarm Test<\/h3>\r\n            <p>\r\n              Verify that the monitoring system receives the intended normal\r\n              and failure states.\r\n            <\/p>\r\n          <\/div>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-maintenance-card\">\r\n          <div class=\"ly-tc-maintenance-card__number\">03<\/div>\r\n\r\n          <div>\r\n            <h3>Module Replacement<\/h3>\r\n            <p>\r\n              Use the compatible replacement cartridge specified for the\r\n              installed base, voltage and protection characteristics.\r\n            <\/p>\r\n          <\/div>\r\n        <\/article>\r\n\r\n        <article class=\"ly-tc-maintenance-card\">\r\n          <div class=\"ly-tc-maintenance-card__number\">04<\/div>\r\n\r\n          <div>\r\n            <h3>Post-Surge Check<\/h3>\r\n            <p>\r\n              Inspect the SPDs, terminals, grounding conductors and protected\r\n              equipment after a known severe surge event.\r\n            <\/p>\r\n          <\/div>\r\n        <\/article>\r\n      <\/div>\r\n\r\n      <p class=\"ly-tc-related-line\">\r\n        Related guides:\r\n        <a href=\"\/spd-maintenance-checklist\/\">\r\n          SPD maintenance checklist\r\n        <\/a>\r\n        and\r\n        <a href=\"\/pluggable-spd-replacement\/\">\r\n          pluggable SPD replacement guide\r\n        <\/a>.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- PROCUREMENT CHECKLIST -->\r\n  <section\r\n    class=\"ly-tc-section ly-tc-section--soft\"\r\n    id=\"procurement-checklist\"\r\n  >\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">For OEM and Project Buyers<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"information-to-send-before-requesting-a-quotation\"><\/span>Information to send before requesting a quotation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          These details allow the supplier to compare the same engineering\r\n          requirement and reduce model-selection errors.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-checklist\">\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Cabinet application<\/strong>\r\n            <span>\r\n              Telecom power, wireless site, CCTV, roadside network or another\r\n              outdoor communication application.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Electrical drawing<\/strong>\r\n            <span>\r\n              Show AC input, rectifier, battery, DC distribution, loads and\r\n              grounding points.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>AC input details<\/strong>\r\n            <span>\r\n              Voltage, phases, neutral, earthing system and SPD installation\r\n              position.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>48V \/ \u221248V DC range<\/strong>\r\n            <span>\r\n              Nominal voltage, maximum voltage, rectifier range, polarity and\r\n              bonded conductor.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Ethernet interfaces<\/strong>\r\n            <span>\r\n              Port quantity, speed, cable category, shielding and connected\r\n              equipment.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>PoE information<\/strong>\r\n            <span>\r\n              PoE method, required power, powered pairs and operating current.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Signal lines<\/strong>\r\n            <span>\r\n              RS485, sensors, door contacts, BMS, RTU and other external copper\r\n              circuits.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Remote alarm<\/strong>\r\n            <span>\r\n              COM, NO and NC logic, contact rating and controller input.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Grounding layout<\/strong>\r\n            <span>\r\n              Grounding-bar position, SPD connection route and site-earthing\r\n              interface.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Outdoor environment<\/strong>\r\n            <span>\r\n              IP rating, temperature, humidity, condensation control and\r\n              corrosion exposure.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Mechanical limits<\/strong>\r\n            <span>\r\n              DIN-rail width, terminal direction, cable space and service\r\n              access.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-checkitem\">\r\n          <div>\r\n            <strong>Commercial requirements<\/strong>\r\n            <span>\r\n              Quantity, target market, documents, OEM label, packaging and\r\n              spare modules.\r\n            <\/span>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-cta\">\r\n        <div class=\"ly-tc-cta__grid\">\r\n          <div>\r\n            <h2><span class=\"ez-toc-section\" id=\"need-an-initial-spd-recommendation\"><\/span>Need an initial SPD recommendation?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n            <p>\r\n              Send the cabinet drawing, AC input, highest continuous DC\r\n              voltage, RJ45 or PoE requirements, signal-line list, grounding\r\n              layout and expected quantity.\r\n            <\/p>\r\n          <\/div>\r\n\r\n          <div>\r\n            <a\r\n              class=\"ly-tc-btn leeyee-site-popup-btn\"\r\n              href=\"javascript:void(0);\"\r\n            >\r\n              <span>Send Cabinet Parameters<\/span>\r\n            <\/a>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- LEEYEE -->\r\n  <section class=\"ly-tc-section\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-grid ly-tc-grid--2\">\r\n        <div>\r\n          <div class=\"ly-tc-eyebrow\">LEEYEE B2B Support<\/div>\r\n\r\n          <h2><span class=\"ez-toc-section\" id=\"support-for-telecom-cabinet-oem-and-project-supply\"><\/span>Support for telecom cabinet OEM and project supply<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n          <p class=\"ly-tc-lead\">\r\n            LEEYEE is a specialized surge protection and low-voltage\r\n            protection supplier, trusted for solar PV, power distribution,\r\n            telecom, industrial and OEM applications.\r\n          <\/p>\r\n\r\n          <p>\r\n            CNSPD is LEEYEE\u2019s surge protection-focused brand platform, built\r\n            to help global buyers source reliable SPDs and related\r\n            low-voltage protection products.\r\n          <\/p>\r\n\r\n          <p>\r\n            <strong>Built to Protect. Trusted to Last.<\/strong>\r\n          <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"ly-tc-card ly-tc-card--blue\">\r\n          <h3>Available B2B support<\/h3>\r\n\r\n          <ul>\r\n            <li>AC, DC and signal SPD parameter confirmation<\/li>\r\n            <li>Cabinet interface and DIN-rail space review<\/li>\r\n            <li>Remote alarm contact configuration<\/li>\r\n            <li>Datasheet and document-scope confirmation<\/li>\r\n            <li>OEM label and private-label discussion<\/li>\r\n            <li>Sample evaluation before bulk production<\/li>\r\n            <li>Replaceable-module and spare-parts planning<\/li>\r\n          <\/ul>\r\n\r\n          <div class=\"ly-tc-note\">\r\n            Final approval should be based on the actual cabinet drawing,\r\n            system parameters, applicable requirements and sample\r\n            verification.\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- RELATED GUIDES -->\r\n  <section\r\n    class=\"ly-tc-section ly-tc-section--soft\"\r\n    id=\"related-guides\"\r\n  >\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Related Technical Guides<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"continue-with-the-detailed-interface-guides\"><\/span>Continue with the detailed interface guides<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n        <p class=\"ly-tc-lead\">\r\n          This page is the whole-cabinet decision guide. The following pages\r\n          cover individual circuits in greater technical depth.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-related\">\r\n        <a class=\"ly-tc-related__item\" href=\"\/48v-dc-spd-for-telecom\/\">\r\n          <strong>48V \/ \u221248V DC Telecom SPD<\/strong>\r\n          <span>\r\n            Voltage range, polarity, bonding, protection modes and remote\r\n            alarm selection.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a\r\n          class=\"ly-tc-related__item\"\r\n          href=\"\/rj45-surge-protector-selection\/\"\r\n        >\r\n          <strong>RJ45 Surge Protector Selection<\/strong>\r\n          <span>\r\n            Data speed, cable pairs, shielding, connector layout and insertion\r\n            loss.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/poe-surge-protector\/\">\r\n          <strong>PoE Surge Protection<\/strong>\r\n          <span>\r\n            Protection for outdoor cameras, wireless equipment and\r\n            Ethernet-powered devices.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/rs485-spd-guide\/\">\r\n          <strong>RS485 SPD Selection<\/strong>\r\n          <span>\r\n            Signal voltage, conductor pairs, transmission requirements and\r\n            grounding.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/spd-remote-alarm-plc\/\">\r\n          <strong>SPD Remote Alarm Contact<\/strong>\r\n          <span>\r\n            COM, NO and NC status signals for PLC, RTU and remote monitoring.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/outdoor-spd-ip-rating\/\">\r\n          <strong>Outdoor SPD and IP Rating<\/strong>\r\n          <span>\r\n            Enclosure ingress protection and the environmental limits of\r\n            internal components.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/spd-cable-length-0-5m\/\">\r\n          <strong>SPD Connection Cable Length<\/strong>\r\n          <span>\r\n            Why conductor routing influences the voltage appearing at\r\n            protected equipment.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/spd-grounding-resistance\/\">\r\n          <strong>SPD Grounding Requirements<\/strong>\r\n          <span>\r\n            Cabinet grounding bars, bonding routes and connection to the site\r\n            earthing system.\r\n          <\/span>\r\n        <\/a>\r\n\r\n        <a class=\"ly-tc-related__item\" href=\"\/spd-maintenance-checklist\/\">\r\n          <strong>SPD Maintenance Checklist<\/strong>\r\n          <span>\r\n            Status indicators, alarms, terminals, modules, moisture and\r\n            post-event condition.\r\n          <\/span>\r\n        <\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- FAQ -->\r\n  <section class=\"ly-tc-section\" id=\"faq\">\r\n    <div class=\"ly-tc-container\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Frequently Asked Questions<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"outdoor-telecom-cabinet-spd-faq\"><\/span>Outdoor telecom cabinet SPD FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n      <\/div>\r\n\r\n      <div class=\"ly-tc-faq\">\r\n        <details>\r\n          <summary>\r\n            What SPDs are normally required in an outdoor telecom cabinet?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              A cabinet may require an AC input SPD, a 48V or \u221248V DC SPD,\r\n              RJ45 or PoE protection, signal-line SPDs and remote alarm\r\n              contacts. The exact combination depends on the conductive lines\r\n              entering and leaving the cabinet.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Can one SPD protect the complete telecom cabinet?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              Usually not. AC power, DC power, Ethernet, PoE and signal\r\n              circuits have different operating voltages, interfaces and\r\n              performance requirements.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Where should the AC SPD be installed?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              It is commonly installed near the AC cable entry or within the\r\n              AC distribution section before the rectifier and sensitive AC\r\n              loads. The final location must follow the project design.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            How should a \u221248V telecom SPD be selected?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              Confirm the highest continuous voltage, polarity, bonded\r\n              conductor, protection modes, discharge ratings, voltage\r\n              protection level and grounding arrangement.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Can a PV DC SPD be used for a 48V telecom cabinet?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              It should not be treated as a direct substitute. A high-voltage\r\n              photovoltaic circuit and a low-voltage telecom DC bus have\r\n              different system conditions.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Does every RJ45 SPD support PoE and Gigabit Ethernet?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              No. Confirm the data rate, PoE arrangement, powered pairs,\r\n              current, cable category, shielding and insertion-loss\r\n              requirements.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Does an IP65 cabinet prevent internal condensation?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              No. An IP classification addresses defined enclosure-ingress\r\n              conditions. Internal condensation can still occur when\r\n              temperature and humidity change.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Is remote alarm useful for an outdoor telecom cabinet SPD?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              It is useful for remote and unattended cabinets. A\r\n              potential-free contact can report a status change to an NMS,\r\n              PLC, RTU or alarm controller.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            Why should SPD grounding conductors be short?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              Fast surge current can create additional voltage across the\r\n              inductance of long conductors. Short, direct routing reduces\r\n              unnecessary added voltage.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n\r\n        <details>\r\n          <summary>\r\n            What should a cabinet OEM send before requesting a quote?\r\n          <\/summary>\r\n          <div class=\"ly-tc-faq__body\">\r\n            <p>\r\n              Send the electrical drawing, AC input, maximum DC voltage,\r\n              grounding layout, Ethernet and PoE requirements, signal list,\r\n              remote-alarm logic, mechanical space, environment, documents\r\n              and quantity.\r\n            <\/p>\r\n          <\/div>\r\n        <\/details>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <!-- REFERENCES -->\r\n  <section class=\"ly-tc-section ly-tc-section--pale\" id=\"references\">\r\n    <div class=\"ly-tc-container ly-tc-references\">\r\n      <div class=\"ly-tc-prose\">\r\n        <div class=\"ly-tc-eyebrow\">Authoritative References<\/div>\r\n\r\n        <h2><span class=\"ez-toc-section\" id=\"standards-and-technical-reference-framework\"><\/span>Standards and technical reference framework<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n      <\/div>\r\n\r\n      <ol>\r\n        <li id=\"ref-1\">\r\n          IEC 61643-11:2025 \u2014 Low-voltage surge protective devices connected\r\n          to AC low-voltage power systems: requirements and test methods.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/65314\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-2\">\r\n          IEC 61643-41:2025 \u2014 Surge protective devices connected to DC\r\n          low-voltage power systems: requirements and test methods.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/27917\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-3\">\r\n          IEC 61643-21:2025 \u2014 Surge protective devices connected to\r\n          telecommunications and signalling networks: requirements and test\r\n          methods, including networks carrying power on the same line such as\r\n          Power over Ethernet.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/69085\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-4\">\r\n          IEC 61643-22:2015 \u2014 Selection and application principles for surge\r\n          protective devices connected to telecommunications and signalling\r\n          networks.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/22772\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-5\">\r\n          ITU-T K.56:2021 \u2014 Protection of radio base stations against\r\n          lightning discharges.\r\n          <a\r\n            href=\"https:\/\/www.itu.int\/rec\/T-REC-K.56-202105-I\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            ITU-T recommendation\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-6\">\r\n          ITU-T K.112:2021 \u2014 Lightning protection, earthing and bonding:\r\n          practical procedures for radio base stations.\r\n          <a\r\n            href=\"https:\/\/www.itu.int\/rec\/T-REC-K.112\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            ITU-T recommendation\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-7\">\r\n          IEC 60529:1989+A1:1999+A2:2013 \u2014 Degrees of protection provided by\r\n          enclosures, IP Code.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/2452\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-8\">\r\n          IEC 61643-12:2020 \u2014 Selection and application principles for SPDs\r\n          connected to AC low-voltage power systems.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/32531\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n\r\n        <li id=\"ref-9\">\r\n          IEC 62305-4:2024 \u2014 Protection against lightning: electrical and\r\n          electronic systems within structures.\r\n          <a\r\n            href=\"https:\/\/webstore.iec.ch\/en\/publication\/29590\"\r\n            target=\"_blank\"\r\n            rel=\"noopener noreferrer\"\r\n          >\r\n            IEC publication\r\n          <\/a>\r\n        <\/li>\r\n      <\/ol>\r\n\r\n      <div class=\"ly-tc-disclaimer\">\r\n        This page provides a B2B engineering-selection framework. It does not\r\n        replace a project-specific lightning risk assessment, electrical\r\n        design, equipment-manufacturer instruction or local installation\r\n        requirement. Final SPD selection, wiring, backup protection,\r\n        grounding and approval must be confirmed against the actual cabinet\r\n        design and applicable standards.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n<\/article>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Respuesta r\u00e1pida: Un armario de telecomunicaciones exterior normalmente requiere m\u00e1s de un SPD. Proteja cada l\u00ednea conductora de CA, CC, Ethernet y de se\u00f1al de acuerdo con su voltaje, interfaz, posici\u00f3n de instalaci\u00f3n y disposici\u00f3n de puesta a tierra reales. Solicitar selecci\u00f3n de SPD para armarios En esta gu\u00eda Protecci\u00f3n necesaria Arquitectura del armario Matriz de selecci\u00f3n SPD de entrada de CA SPD de 48V \/ \u221248V CC RJ45 y&#8230;<\/p>","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,488,422],"tags":[],"class_list":["post-30306","post","type-post","status-publish","format-standard","hentry","category-news","category-surge-protection","category-industry-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Outdoor Telecom Cabinet SPD Selection Guide | LEEYEE Electrics<\/title>\n<meta name=\"description\" content=\"Discover Outdoor Telecom Cabinet SPD Selection Guide and further information about electrical protection. Find professional customized low-voltage SPD solutions at LEEYEE Electrics.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cnspd.com\/es\/outdoor-telecom-cabinet-spd\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Outdoor Telecom Cabinet SPD Selection Guide | LEEYEE Electrics\" \/>\n<meta property=\"og:description\" content=\"Discover Outdoor Telecom Cabinet SPD Selection Guide and further information about electrical protection. 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