{"id":29517,"date":"2026-06-23T08:45:51","date_gmt":"2026-06-23T00:45:51","guid":{"rendered":"https:\/\/www.cnspd.com\/?page_id=29517"},"modified":"2026-06-23T10:48:56","modified_gmt":"2026-06-23T02:48:56","slug":"29517-2","status":"publish","type":"page","link":"https:\/\/www.cnspd.com\/es\/type-1-2-spd\/","title":{"rendered":"SPD Tipo 1+2: Qu\u00e9 significa y cu\u00e1ndo utilizarlo"},"content":{"rendered":"<section class=\"l-section wpb_row height_large width_full\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-html us_custom_f15df953\"><style>\n\/* =========================================================\n   LEEYEE TYPE 1+2 SPD PAGE\n   Selection-focused page version\n   Use inside WordPress Custom HTML\n========================================================= *\/\n\n.leeyee-t12,\n.leeyee-t12 * {\n  box-sizing: border-box;\n}\n\n.leeyee-t12 {\n  --blue: #004898;\n  --blue-dark: #00366f;\n  --blue-pale: #f7fbff;\n  --blue-soft: #eef6fc;\n  --text: #172033;\n  --muted: #5f6b7a;\n  --line: #dce6ee;\n  --white: #ffffff;\n  --note: #fffaf0;\n  --note-line: #c69500;\n\n  width: 100%;\n  color: var(--text);\n  font-family: inherit;\n  font-size: 16px;\n  line-height: 1.65;\n}\n\n.leeyee-t12 a {\n  color: var(--blue);\n}\n\n.leeyee-t12 h1,\n.leeyee-t12 h2,\n.leeyee-t12 h3,\n.leeyee-t12 p {\n  margin-top: 0;\n}\n\n.leeyee-t12 p {\n  margin-bottom: 16px;\n}\n\n.leeyee-t12-container {\n  width: min(1120px, calc(100% - 36px));\n  margin: 0 auto;\n}\n\n.leeyee-t12-section {\n  padding: 72px 0;\n}\n\n.leeyee-t12-section + .leeyee-t12-section {\n  border-top: 1px solid var(--line);\n}\n\n.leeyee-t12-hero {\n  position: relative;\n  overflow: hidden;\n  padding: 86px 0 76px;\n  background:\n    linear-gradient(115deg, rgba(0,72,152,.96), 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line-height: 1.72;\n}\n\n.leeyee-t12-hero-actions {\n  display: flex;\n  flex-wrap: wrap;\n  gap: 12px;\n  margin-top: 24px;\n}\n\n.leeyee-t12-btn {\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  min-height: 48px;\n  padding: 13px 20px;\n  border: 0 !important;\n  border-radius: 7px;\n  background: var(--blue);\n  color: #fff !important;\n  font-family: inherit !important;\n  font-size: 15px !important;\n  font-weight: 800 !important;\n  line-height: 1.2 !important;\n  text-align: center;\n  text-decoration: none !important;\n  text-indent: 0 !important;\n  cursor: pointer !important;\n  opacity: 1 !important;\n  visibility: visible !important;\n}\n\n.leeyee-t12-btn:hover {\n  background: var(--blue-dark);\n  color: #fff !important;\n}\n\n.leeyee-t12-btn .w-btn-label {\n  display: inline-block !important;\n  color: #fff !important;\n  font-size: 15px !important;\n  font-weight: 800 !important;\n  line-height: 1.2 !important;\n}\n\n.leeyee-t12-btn::before,\n.leeyee-t12-btn::after {\n  display: none !important;\n}\n\n.leeyee-t12-btn-white {\n  background: #fff !important;\n  color: var(--blue) !important;\n}\n\n.leeyee-t12-btn-white .w-btn-label {\n  color: var(--blue) !important;\n}\n\n.leeyee-t12-btn-ghost {\n  border: 1px solid rgba(255,255,255,.58) !important;\n  background: transparent !important;\n  color: #fff !important;\n}\n\n.leeyee-t12-hero-card {\n  padding: 28px;\n  border: 1px solid rgba(255,255,255,.26);\n  border-radius: 18px;\n  background: rgba(255,255,255,.12);\n  box-shadow: 0 26px 70px rgba(0,0,0,.24);\n  backdrop-filter: blur(8px);\n}\n\n.leeyee-t12-direct {\n  padding: 18px 20px;\n  border-left: 4px solid #fff;\n  border-radius: 0 10px 10px 0;\n  background: rgba(255,255,255,.13);\n  color: rgba(255,255,255,.92);\n}\n\n.leeyee-t12-direct strong {\n  color: #fff;\n}\n\n.leeyee-t12-quick {\n  display: grid;\n  gap: 10px;\n  margin-top: 20px;\n}\n\n.leeyee-t12-quick-item {\n  display: flex;\n  gap: 12px;\n  padding: 13px 14px;\n  border: 1px solid rgba(255,255,255,.2);\n  border-radius: 10px;\n  background: rgba(255,255,255,.1);\n}\n\n.leeyee-t12-quick-item b {\n  flex: 0 0 92px;\n  color: #fff;\n}\n\n.leeyee-t12-quick-item span {\n  color: rgba(255,255,255,.82);\n}\n\n.leeyee-t12-eyebrow {\n  display: inline-flex;\n  align-items: center;\n  gap: 8px;\n  margin-bottom: 12px;\n  color: var(--blue);\n  font-size: 13px;\n  font-weight: 800;\n  letter-spacing: .08em;\n  text-transform: uppercase;\n}\n\n.leeyee-t12-eyebrow:before {\n  content: \"\";\n  width: 25px;\n  height: 3px;\n  border-radius: 99px;\n  background: var(--blue);\n}\n\n.leeyee-t12-title {\n  max-width: 820px;\n  margin-bottom: 14px;\n  color: var(--text);\n  font-size: clamp(30px, 4vw, 44px);\n  line-height: 1.16;\n  letter-spacing: -.03em;\n}\n\n.leeyee-t12-intro {\n  max-width: 840px;\n  color: var(--muted);\n  font-size: 17px;\n}\n\n.leeyee-t12-grid-2 {\n  display: grid;\n  grid-template-columns: minmax(0, 1fr) minmax(300px, .74fr);\n  gap: 28px;\n  align-items: start;\n}\n\n.leeyee-t12-grid-3 {\n  display: grid;\n  grid-template-columns: repeat(3, minmax(0, 1fr));\n  gap: 18px;\n  margin-top: 28px;\n}\n\n.leeyee-t12-card {\n  height: 100%;\n  padding: 22px;\n  border: 1px solid var(--line);\n  border-radius: 14px;\n  background: #fff;\n}\n\n.leeyee-t12-card h3 {\n  margin-bottom: 9px;\n  color: var(--text);\n  font-size: 21px;\n  line-height: 1.3;\n}\n\n.leeyee-t12-card p {\n  color: var(--muted);\n  font-size: 15px;\n}\n\n.leeyee-t12-number {\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  width: 34px;\n  height: 34px;\n  margin-bottom: 12px;\n  border-radius: 50%;\n  background: var(--blue);\n  color: #fff;\n  font-weight: 900;\n}\n\n.leeyee-t12-soft {\n  background: var(--blue-pale);\n}\n\n.leeyee-t12-note {\n  margin: 22px 0;\n  padding: 18px 20px;\n  border-left: 4px solid var(--blue);\n  border-radius: 0 9px 9px 0;\n  background: var(--blue-pale);\n  color: var(--text);\n}\n\n.leeyee-t12-warning {\n  margin: 22px 0;\n  padding: 18px 20px;\n  border: 1px solid #eadca9;\n  border-left: 4px solid var(--note-line);\n  border-radius: 0 9px 9px 0;\n  background: var(--note);\n  color: var(--text);\n}\n\n.leeyee-t12-table-wrap {\n  width: 100%;\n  margin: 26px 0;\n  overflow-x: auto;\n  border: 1px solid var(--line);\n  border-radius: 12px;\n  background: #fff;\n  -webkit-overflow-scrolling: touch;\n}\n\n.leeyee-t12-table {\n  width: 100%;\n  min-width: 780px;\n  border-collapse: collapse;\n}\n\n.leeyee-t12-table th,\n.leeyee-t12-table td {\n  padding: 15px 16px;\n  border-right: 1px solid var(--line);\n  border-bottom: 1px solid var(--line);\n  text-align: left;\n  vertical-align: top;\n  font-size: 14px;\n}\n\n.leeyee-t12-table th:last-child,\n.leeyee-t12-table td:last-child {\n  border-right: 0;\n}\n\n.leeyee-t12-table tr:last-child td {\n  border-bottom: 0;\n}\n\n.leeyee-t12-table th {\n  background: var(--blue);\n  color: #fff;\n  font-weight: 800;\n}\n\n.leeyee-t12-table td:first-child {\n  font-weight: 800;\n}\n\n.leeyee-t12-checklist {\n  display: grid;\n  gap: 12px;\n  margin-top: 24px;\n}\n\n.leeyee-t12-check {\n  display: grid;\n  grid-template-columns: 28px 1fr;\n  gap: 12px;\n  padding: 16px 17px;\n  border: 1px solid var(--line);\n  border-radius: 11px;\n  background: #fff;\n}\n\n.leeyee-t12-check:before {\n  content: \"\u2713\";\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  width: 28px;\n  height: 28px;\n  border-radius: 50%;\n  background: var(--blue);\n  color: #fff;\n  font-weight: 900;\n}\n\n.leeyee-t12-check b {\n  display: block;\n  margin-bottom: 3px;\n  color: var(--text);\n}\n\n.leeyee-t12-check span {\n  display: block;\n  color: var(--muted);\n  font-size: 14px;\n}\n\n.leeyee-t12-rating-grid {\n  display: grid;\n  grid-template-columns: repeat(3, minmax(0, 1fr));\n  gap: 14px;\n  margin-top: 26px;\n}\n\n.leeyee-t12-rating {\n  padding: 18px 18px;\n  border: 1px solid var(--line);\n  border-radius: 12px;\n  background: #fff;\n}\n\n.leeyee-t12-rating strong {\n  display: block;\n  margin-bottom: 5px;\n  color: var(--blue);\n  font-size: 21px;\n}\n\n.leeyee-t12-rating span {\n  color: var(--muted);\n  font-size: 14px;\n}\n\n\n.leeyee-t12-product-visual {\n  position: sticky;\n  top: 92px;\n  max-width: 470px;\n  margin-left: auto;\n  margin-top: -72px;\n}\n\n.leeyee-t12-product-image {\n  display: flex;\n  align-items: flex-start;\n  justify-content: center;\n  min-height: 0;\n  padding: 0 24px 22px;\n  border-radius: 18px;\n  background:\n    radial-gradient(circle at 70% 25%, rgba(0,72,152,.10), transparent 34%),\n    linear-gradient(180deg, #f7fbff 0%, #ffffff 76%);\n}\n\n.leeyee-t12-product-image img {\n  display: block;\n  width: 100%;\n  max-width: 410px;\n  height: auto;\n  object-fit: contain;\n  filter: drop-shadow(0 24px 28px rgba(23,32,51,.16));\n}\n\n\n.leeyee-t12-product-image {\n  text-decoration: none !important;\n}\n\n.leeyee-t12-product-image:hover img {\n  transform: translateY(-3px);\n}\n\n.leeyee-t12-product-image img {\n  transition: transform .22s ease;\n}\n\n.leeyee-t12-product-caption {\n  display: flex;\n  flex-wrap: wrap;\n  justify-content: center;\n  gap: 8px;\n  margin-top: 12px;\n  text-align: center;\n}\n\n.leeyee-t12-product-caption span {\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  min-height: 30px;\n  padding: 6px 11px;\n  border: 1px solid #d7e7f2;\n  border-radius: 999px;\n  background: #fff;\n  color: var(--blue);\n  font-size: 12px;\n  font-weight: 900;\n}\n\n.leeyee-t12-cta-band {\n  padding: 34px;\n  border-radius: 18px;\n  background:\n    linear-gradient(135deg, rgba(0,72,152,.96), rgba(0,54,111,.94));\n  color: #fff;\n}\n\n.leeyee-t12-cta-band h2 {\n  margin-bottom: 10px;\n  color: #fff;\n  font-size: clamp(28px, 4vw, 42px);\n  line-height: 1.18;\n}\n\n.leeyee-t12-cta-band p {\n  max-width: 790px;\n  color: rgba(255,255,255,.86);\n}\n\n.leeyee-t12-faq details {\n  margin-bottom: 10px;\n  border: 1px solid var(--line);\n  border-radius: 10px;\n  background: #fff;\n  overflow: hidden;\n}\n\n.leeyee-t12-faq summary {\n  position: relative;\n  padding: 18px 54px 18px 19px;\n  color: var(--text);\n  font-weight: 800;\n  cursor: pointer;\n  list-style: none;\n}\n\n.leeyee-t12-faq summary::-webkit-details-marker {\n  display: none;\n}\n\n.leeyee-t12-faq summary:after {\n  content: \"+\";\n  position: absolute;\n  right: 20px;\n  top: 50%;\n  transform: translateY(-50%);\n  color: var(--blue);\n  font-size: 24px;\n  font-weight: 500;\n}\n\n.leeyee-t12-faq details[open] summary:after {\n  content: \"\u2212\";\n}\n\n.leeyee-t12-faq-body {\n  padding: 0 19px 19px;\n  color: var(--muted);\n}\n\n.leeyee-t12-related {\n  display: grid;\n  grid-template-columns: repeat(2, minmax(0, 1fr));\n  gap: 14px;\n  margin-top: 24px;\n}\n\n.leeyee-t12-related a {\n  display: block;\n  padding: 18px 19px;\n  border: 1px solid var(--line);\n  border-radius: 12px;\n  background: #fff;\n  color: var(--text) !important;\n  font-weight: 800;\n  text-decoration: none !important;\n}\n\n.leeyee-t12-related a:hover {\n  border-color: var(--blue);\n  color: var(--blue) !important;\n}\n\n.leeyee-t12-related span {\n  display: block;\n  margin-top: 5px;\n  color: var(--muted);\n  font-size: 13px;\n  font-weight: 400;\n}\n\n\/* Mobile table cards *\/\n@media (max-width: 767px) {\n  .leeyee-t12-table-wrap {\n    overflow-x: visible !important;\n    border: 0 !important;\n    background: transparent !important;\n  }\n\n  .leeyee-t12-table {\n    display: block !important;\n    min-width: 0 !important;\n    width: 100% !important;\n  }\n\n  .leeyee-t12-table thead {\n    display: none !important;\n  }\n\n  .leeyee-t12-table tbody {\n    display: grid !important;\n    gap: 14px !important;\n  }\n\n  .leeyee-t12-table tr {\n    display: block !important;\n    overflow: hidden !important;\n    border: 1px solid var(--line) !important;\n    border-radius: 12px !important;\n    background: #fff !important;\n  }\n\n  .leeyee-t12-table td {\n    display: block !important;\n    width: 100% !important;\n    padding: 12px 15px !important;\n    border-right: 0 !important;\n    border-bottom: 1px solid var(--line) !important;\n    font-size: 14px !important;\n    text-align: left !important;\n  }\n\n  .leeyee-t12-table td:last-child {\n    border-bottom: 0 !important;\n  }\n\n  .leeyee-t12-table td:first-child {\n    background: var(--blue) !important;\n    color: #fff !important;\n    font-size: 16px !important;\n    font-weight: 800 !important;\n  }\n\n  .leeyee-t12-table td:not(:first-child)::before {\n    display: block !important;\n    margin-bottom: 4px !important;\n    color: var(--blue) !important;\n    font-size: 12px !important;\n    font-weight: 800 !important;\n    text-transform: uppercase !important;\n    letter-spacing: .04em !important;\n  }\n\n  #combined-vs-separate .leeyee-t12-table td:nth-child(2)::before {\n    content: \"Type 1+2 SPD\";\n  }\n\n  #combined-vs-separate .leeyee-t12-table td:nth-child(3)::before {\n    content: \"Separate Type 1 + Type 2\";\n  }\n\n  #selection-guide .leeyee-t12-table td:nth-child(2)::before {\n    content: \"Initial direction\";\n  }\n\n  #ac-vs-pv .leeyee-t12-table td:nth-child(2)::before {\n    content: \"AC Type 1+2 SPD\";\n  }\n\n  #ac-vs-pv .leeyee-t12-table td:nth-child(3)::before {\n    content: \"PV DC Type 1+2 SPD\";\n  }\n}\n\n@media (max-width: 900px) {\n  .leeyee-t12-product-visual {\n    position: static;\n    max-width: 100%;\n    margin-left: 0;\n    margin-top: 0;\n  }\n\n  .leeyee-t12-product-image {\n    min-height: 0;\n    padding: 20px;\n  }\n\n\n  .leeyee-t12-hero-grid,\n  .leeyee-t12-grid-2,\n  .leeyee-t12-grid-3,\n  .leeyee-t12-rating-grid,\n  .leeyee-t12-related {\n    grid-template-columns: 1fr;\n  }\n\n  .leeyee-t12-hero {\n    padding: 66px 0 58px;\n  }\n}\n\n@media (max-width: 600px) {\n  .leeyee-t12 {\n    font-size: 15px;\n  }\n\n  .leeyee-t12-container {\n    width: min(100% - 28px, 1120px);\n  }\n\n  .leeyee-t12-section {\n    padding: 52px 0;\n  }\n\n  .leeyee-t12-hero-card,\n  .leeyee-t12-cta-band {\n    padding: 22px;\n  }\n\n  .leeyee-t12-quick-item {\n    display: block;\n  }\n\n  .leeyee-t12-quick-item b {\n    display: block;\n    margin-bottom: 3px;\n  }\n\n  .leeyee-t12-hero-actions {\n    display: grid;\n  }\n\n  .leeyee-t12-btn {\n    width: 100%;\n  }\n}\n<\/style>\n\n<div class=\"leeyee-t12\">\n\n  <section class=\"leeyee-t12-hero\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-hero-grid\">\n        <div>\n          <div class=\"leeyee-t12-kicker\">Type 1+2 SPD Selection Guide<\/div>\n\n          <h1>Type 1+2 SPD: What It Means and When to Use It<\/h1>\n\n          <p class=\"leeyee-t12-hero-lead\">\n            A Type 1+2 SPD combines Class I lightning-current duty and Class II\n            distribution-level surge protection in one device. It is commonly\n            used at the origin of an installation where both Type 1 and Type 2\n            protection duties are required.\n          <\/p>\n\n          <div class=\"leeyee-t12-hero-actions\">\n            <button type=\"button\" class=\"leeyee-t12-btn leeyee-t12-btn-white leeyee-site-popup-btn\" aria-label=\"Request Type 1+2 SPD Selection\">\n              <span class=\"w-btn-label\">Request Type 1+2 SPD Selection<\/span>\n            <\/button>\n\n            <a class=\"leeyee-t12-btn leeyee-t12-btn-ghost\" href=\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\" target=\"_blank\" rel=\"noopener\">\n              Compare All SPD Types\n            <\/a>\n          <\/div>\n        <\/div>\n\n        <div class=\"leeyee-t12-hero-card\">\n          <div class=\"leeyee-t12-direct\">\n            <strong>Direct answer:<\/strong>\n            Type 1+2 SPD means a surge protective device tested for both Type 1\n            and Type 2 duties. It can discharge partial lightning current and\n            limit surge overvoltage at the main distribution level.\n          <\/div>\n\n          <div class=\"leeyee-t12-quick\">\n            <div class=\"leeyee-t12-quick-item\">\n              <b>Test duty<\/b>\n              <span>Class I + Class II<\/span>\n            <\/div>\n\n            <div class=\"leeyee-t12-quick-item\">\n              <b>Waveforms<\/b>\n              <span>10\/350 \u03bcs and 8\/20 \u03bcs<\/span>\n            <\/div>\n\n            <div class=\"leeyee-t12-quick-item\">\n              <b>Position<\/b>\n              <span>Origin or main distribution board<\/span>\n            <\/div>\n\n            <div class=\"leeyee-t12-quick-item\">\n              <b>Key ratings<\/b>\n              <span>Iimp, In, Imax, Uc and Up<\/span>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"what-is\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Definition<\/div>\n      <h2 class=\"leeyee-t12-title\">What Is a Type 1+2 SPD?<\/h2>\n\n      <div class=\"leeyee-t12-grid-2\">\n        <div>\n          <p>\n            A <strong>Type 1+2 SPD<\/strong> is a combined surge protective device\n            designed to meet both Type 1 and Type 2 test duties. It is used where\n            an installation may be exposed to partial lightning current and also\n            needs distribution-level surge-voltage limitation.\n          <\/p>\n\n          <p>\n            In IEC-style terminology, Type 1 duty is associated with Class I\n            testing and the 10\/350 \u03bcs impulse current waveform. Type 2 duty is\n            associated with Class II testing and the 8\/20 \u03bcs discharge current\n            waveform.\n          <\/p>\n\n          <p>\n            A Type 1+2 SPD does not mean \u201cbetter than every Type 2 SPD\u201d in every\n            project. It means the product has been designed and tested for two\n            different surge protection duties.\n          <\/p>\n\n          <div class=\"leeyee-t12-note\">\n            Need the full difference between SPD classes? Read the\n            <a href=\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\" target=\"_blank\" rel=\"noopener\">\n              Type 1 vs Type 2 vs Type 3 SPD guide\n            <\/a>.\n          <\/div>\n        <\/div>\n\n        <div class=\"leeyee-t12-product-visual\">\n          <a class=\"leeyee-t12-product-image\"\n             href=\"https:\/\/www.cnspd.com\/ly1-12-54spluggable-multi-pole-spd-product\/\"\n             target=\"_blank\"\n             rel=\"noopener\"\n             aria-label=\"View LEEYEE LY1-12 5-4S pluggable multi-pole SPD product page\">\n            <img decoding=\"async\"\n              src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/ac-t12.webp\"\n              alt=\"LEEYEE AC Type 1+2 surge protective device\"\n              loading=\"lazy\"\n            \/>\n          <\/a>\n          <div class=\"leeyee-t12-product-caption\">\n            <span>AC Type 1+2 SPD<\/span>\n            <span>Class I + II<\/span>\n            <span>10\/350 \u03bcs + 8\/20 \u03bcs<\/span>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section leeyee-t12-soft\" id=\"how-it-works\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Working Principle<\/div>\n      <h2 class=\"leeyee-t12-title\">How a Type 1+2 SPD Works<\/h2>\n\n      <p class=\"leeyee-t12-intro\">\n        A Type 1+2 SPD is designed to respond to both high-energy impulse\n        current and lower-energy distribution surges.\n      <\/p>\n\n      <div class=\"leeyee-t12-grid-3\">\n        <div class=\"leeyee-t12-card\">\n          <div class=\"leeyee-t12-number\">1<\/div>\n          <h3>Surge enters the system<\/h3>\n          <p>\n            A lightning-related impulse or switching surge appears on the power\n            system and raises the voltage above the normal operating level.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <div class=\"leeyee-t12-number\">2<\/div>\n          <h3>SPD conducts surge current<\/h3>\n          <p>\n            The internal protection elements become conductive and divert surge\n            current toward the bonding or earthing system.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <div class=\"leeyee-t12-number\">3<\/div>\n          <h3>Voltage is limited<\/h3>\n          <p>\n            The SPD reduces the transient voltage reaching downstream equipment\n            according to its voltage protection level and installation conditions.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"combined-vs-separate\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Comparison<\/div>\n      <h2 class=\"leeyee-t12-title\">Type 1+2 SPD vs Separate Type 1 + Type 2 SPDs<\/h2>\n\n      <p class=\"leeyee-t12-intro\">\n        A combined Type 1+2 SPD and a separate Type 1 plus Type 2 arrangement can\n        both be valid. The better choice depends on installation space, project\n        design, coordination requirements and the manufacturer's tested solution.\n      <\/p>\n\n      <div class=\"leeyee-t12-table-wrap\">\n        <table class=\"leeyee-t12-table\">\n          <thead>\n            <tr>\n              <th>Comparison item<\/th>\n              <th>Type 1+2 SPD<\/th>\n              <th>Separate Type 1 + Type 2<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Basic concept<\/td>\n              <td>Two test duties in one combined device<\/td>\n              <td>Two separate SPD stages installed and coordinated<\/td>\n            <\/tr>\n            <tr>\n              <td>Panel space<\/td>\n              <td>Usually more compact<\/td>\n              <td>Usually requires more space<\/td>\n            <\/tr>\n            <tr>\n              <td>Coordination<\/td>\n              <td>Internal coordination depends on product design and testing<\/td>\n              <td>External coordination must be checked between devices<\/td>\n            <\/tr>\n            <tr>\n              <td>Installation simplicity<\/td>\n              <td>Often simpler at one main board location<\/td>\n              <td>May allow more flexible stage separation<\/td>\n            <\/tr>\n            <tr>\n              <td>Typical use<\/td>\n              <td>Main incoming board with both Type 1 and Type 2 duties<\/td>\n              <td>Larger installations with separate protection zones or panel distances<\/td>\n            <\/tr>\n            <tr>\n              <td>Selection risk<\/td>\n              <td>Must verify both Iimp and Type 2 ratings<\/td>\n              <td>Must verify distance, coordination and protection level between stages<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"leeyee-t12-warning\">\n        Do not choose a Type 1+2 SPD only because the name looks stronger.\n        Confirm the actual system voltage, test ratings, short-circuit conditions,\n        installation position and downstream equipment sensitivity.\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"when-needed\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Applications<\/div>\n      <h2 class=\"leeyee-t12-title\">When Do You Need a Type 1+2 SPD?<\/h2>\n\n      <p class=\"leeyee-t12-intro\">\n        Type 1+2 SPDs are commonly considered when Type 1 lightning-current duty\n        and Type 2 distribution protection are both needed at the same point.\n      <\/p>\n\n      <div class=\"leeyee-t12-checklist\">\n        <div class=\"leeyee-t12-check\">\n          <div>\n            <b>Building with external lightning protection<\/b>\n            <span>When partial lightning current may enter the low-voltage installation.<\/span>\n          <\/div>\n        <\/div>\n\n        <div class=\"leeyee-t12-check\">\n          <div>\n            <b>Main incoming distribution board<\/b>\n            <span>When the origin of the installation needs a compact combined SPD stage.<\/span>\n          <\/div>\n        <\/div>\n\n        <div class=\"leeyee-t12-check\">\n          <div>\n            <b>Industrial or commercial electrical panels<\/b>\n            <span>When reliability matters and the project design requires Class I + Class II surge protection.<\/span>\n          <\/div>\n        <\/div>\n\n        <div class=\"leeyee-t12-check\">\n          <div>\n            <b>Solar PV AC or DC protection concept<\/b>\n            <span>When the system design requires an SPD tested for both lightning-current and distribution surge duties.<\/span>\n          <\/div>\n        <\/div>\n\n        <div class=\"leeyee-t12-check\">\n          <div>\n            <b>Limited panel space<\/b>\n            <span>When a combined solution is preferred instead of two separate SPD stages.<\/span>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section leeyee-t12-soft\" id=\"when-type2-enough\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Avoid Overspecification<\/div>\n      <h2 class=\"leeyee-t12-title\">When Is a Type 2 SPD Enough?<\/h2>\n\n      <p>\n        Not every installation needs a Type 1+2 SPD. A Type 2 SPD may be enough\n        where Type 1 lightning-current duty is not required and the installation\n        mainly needs distribution-level surge protection.\n      <\/p>\n\n      <p>A Type 2 SPD may be considered when:<\/p>\n\n      <ul>\n        <li>The project does not require Type 1\/Class I duty;<\/li>\n        <li>No partial lightning current is expected at the installation origin;<\/li>\n        <li>The building does not have external lightning protection requiring Type 1 SPD selection;<\/li>\n        <li>The applicable standard, design or risk assessment only requires Type 2 protection;<\/li>\n        <li>The SPD is installed in a sub-distribution board or equipment panel.<\/li>\n      <\/ul>\n\n      <div class=\"leeyee-t12-note\">\n        For distribution-board selection, see the\n        <a href=\"https:\/\/www.cnspd.com\/type-2-spd\/\" target=\"_blank\" rel=\"noopener\">\n          Type 2 SPD guide\n        <\/a>.\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"selection-guide\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Selection Guide<\/div>\n      <h2 class=\"leeyee-t12-title\">How to Select a Type 1+2 SPD<\/h2>\n\n      <p class=\"leeyee-t12-intro\">\n        Select a Type 1+2 SPD by checking the full rating set, not only the kA\n        value printed on the product.\n      <\/p>\n\n      <div class=\"leeyee-t12-table-wrap\">\n        <table class=\"leeyee-t12-table\">\n          <thead>\n            <tr>\n              <th>Selection item<\/th>\n              <th>Initial direction<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>System type<\/td>\n              <td>Confirm AC, PV DC, telecom, signal or special application.<\/td>\n            <\/tr>\n            <tr>\n              <td>Nominal voltage<\/td>\n              <td>Choose Uc or Ucpv according to the real operating voltage and system arrangement.<\/td>\n            <\/tr>\n            <tr>\n              <td>Installation position<\/td>\n              <td>Confirm whether it is installed at the origin, main board or another protection zone transition.<\/td>\n            <\/tr>\n            <tr>\n              <td>Earthing system<\/td>\n              <td>Confirm TN-S, TN-C, TT, IT or the relevant PV DC grounding arrangement.<\/td>\n            <\/tr>\n            <tr>\n              <td>Iimp<\/td>\n              <td>Check impulse current rating for Type 1\/Class I duty.<\/td>\n            <\/tr>\n            <tr>\n              <td>In and Imax<\/td>\n              <td>Check discharge current ratings for Type 2\/Class II duty.<\/td>\n            <\/tr>\n            <tr>\n              <td>Up<\/td>\n              <td>Check whether the voltage protection level is suitable for downstream equipment.<\/td>\n            <\/tr>\n            <tr>\n              <td>Short-circuit rating<\/td>\n              <td>Verify prospective short-circuit current and required backup protection.<\/td>\n            <\/tr>\n            <tr>\n              <td>Poles and protection mode<\/td>\n              <td>Confirm 1P, 2P, 3P, 4P, N-PE or PV pole configuration.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"leeyee-t12-rating-grid\">\n        <div class=\"leeyee-t12-rating\">\n          <strong>Iimp<\/strong>\n          <span>Impulse discharge current for Type 1 lightning-current duty.<\/span>\n        <\/div>\n\n        <div class=\"leeyee-t12-rating\">\n          <strong>In \/ Imax<\/strong>\n          <span>Discharge current values associated with Type 2 duty.<\/span>\n        <\/div>\n\n        <div class=\"leeyee-t12-rating\">\n          <strong>Uc \/ Ucpv<\/strong>\n          <span>Maximum continuous operating voltage for AC or PV DC systems.<\/span>\n        <\/div>\n\n        <div class=\"leeyee-t12-rating\">\n          <strong>Up<\/strong>\n          <span>Voltage protection level under defined test conditions.<\/span>\n        <\/div>\n\n        <div class=\"leeyee-t12-rating\">\n          <strong>ISCCR<\/strong>\n          <span>Short-circuit current rating or relevant fault-current withstand condition.<\/span>\n        <\/div>\n\n        <div class=\"leeyee-t12-rating\">\n          <strong>Mode<\/strong>\n          <span>L-N, L-PE, N-PE, L-L or PV-specific protection configuration.<\/span>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"installation\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Installation Notes<\/div>\n      <h2 class=\"leeyee-t12-title\">Installation and Coordination Notes<\/h2>\n\n      <div class=\"leeyee-t12-grid-3\">\n        <div class=\"leeyee-t12-card\">\n          <h3>Keep leads short<\/h3>\n          <p>\n            Long connection conductors increase residual voltage. Keep SPD\n            connection paths as short and straight as practical.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Check backup protection<\/h3>\n          <p>\n            Verify required fuse or breaker coordination according to the SPD\n            datasheet and project short-circuit conditions.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Coordinate downstream<\/h3>\n          <p>\n            A Type 1+2 SPD at the main board may not eliminate the need for\n            downstream Type 2 or Type 3 protection near sensitive equipment.\n          <\/p>\n        <\/div>\n      <\/div>\n\n      <div class=\"leeyee-t12-warning\">\n        Type 1+2 does not automatically mean the whole installation is fully\n        protected. Cable length, equipment sensitivity, downstream panels and\n        protection zones still matter.\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section leeyee-t12-soft\" id=\"ac-vs-pv\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">AC and PV DC<\/div>\n      <h2 class=\"leeyee-t12-title\">AC Type 1+2 SPD vs PV DC Type 1+2 SPD<\/h2>\n\n      <p class=\"leeyee-t12-intro\">\n        AC and PV DC SPDs are not interchangeable. A Type 1+2 classification\n        must still be matched with the correct application and voltage system.\n      <\/p>\n\n      <div class=\"leeyee-t12-table-wrap\">\n        <table class=\"leeyee-t12-table\">\n          <thead>\n            <tr>\n              <th>Comparison item<\/th>\n              <th>AC Type 1+2 SPD<\/th>\n              <th>PV DC Type 1+2 SPD<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Application<\/td>\n              <td>Low-voltage AC distribution system<\/td>\n              <td>Photovoltaic DC circuits and inverter DC side<\/td>\n            <\/tr>\n            <tr>\n              <td>Voltage rating<\/td>\n              <td>Uc selected for AC system voltage<\/td>\n              <td>Ucpv selected for PV string or array voltage<\/td>\n            <\/tr>\n            <tr>\n              <td>Arc behaviour<\/td>\n              <td>AC current naturally crosses zero<\/td>\n              <td>DC current requires PV-specific disconnection design<\/td>\n            <\/tr>\n            <tr>\n              <td>Common use<\/td>\n              <td>Main incoming boards and AC distribution panels<\/td>\n              <td>PV combiner boxes, inverter DC input and PV protection panels<\/td>\n            <\/tr>\n            <tr>\n              <td>Selection warning<\/td>\n              <td>Match earthing system and protection mode<\/td>\n              <td>Do not use ordinary AC SPD on PV DC circuits<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"leeyee-t12-note\">\n        For photovoltaic applications, see\n        <a href=\"https:\/\/www.cnspd.com\/solar-spd\/\" target=\"_blank\" rel=\"noopener\">Solar SPD<\/a>\n        and\n        <a href=\"https:\/\/www.cnspd.com\/dc-spd-up-to-1500v\/\" target=\"_blank\" rel=\"noopener\">1500V DC SPD<\/a>.\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"mistakes\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Selection Mistakes<\/div>\n      <h2 class=\"leeyee-t12-title\">Common Type 1+2 SPD Selection Mistakes<\/h2>\n\n      <div class=\"leeyee-t12-grid-3\">\n        <div class=\"leeyee-t12-card\">\n          <h3>Choosing by kA only<\/h3>\n          <p>\n            A high current number is not enough. Check waveform, rating type,\n            Uc, Up, protection mode and short-circuit conditions.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Ignoring Iimp<\/h3>\n          <p>\n            If Type 1 duty is required, the Iimp rating and 10\/350 \u03bcs test duty\n            must be checked, not only Imax.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Using AC SPD on PV DC<\/h3>\n          <p>\n            PV DC circuits require PV-specific voltage and disconnection\n            characteristics. AC products should not be substituted.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Forgetting downstream panels<\/h3>\n          <p>\n            A main-board Type 1+2 SPD may still need downstream coordinated\n            SPDs when loads are far away.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Wrong earthing assumption<\/h3>\n          <p>\n            Protection mode and pole configuration must match the actual TN, TT,\n            IT or PV grounding arrangement.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>No backup protection check<\/h3>\n          <p>\n            The SPD and upstream protective device must be compatible with the\n            prospective short-circuit current.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section leeyee-t12-soft\" id=\"leeyee-support\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">LEEYEE Support<\/div>\n      <h2 class=\"leeyee-t12-title\">Type 1+2 SPD Support from LEEYEE<\/h2>\n\n      <p class=\"leeyee-t12-intro\">\n        LEEYEE is a specialized surge protection and low-voltage protection\n        supplier, trusted for solar PV, power distribution, telecom, industrial,\n        and OEM applications.\n      <\/p>\n\n      <div class=\"leeyee-t12-grid-3\">\n        <div class=\"leeyee-t12-card\">\n          <h3>Model selection<\/h3>\n          <p>\n            Support for selecting AC or PV DC Type 1+2 SPD by system voltage,\n            pole configuration, protection mode and project environment.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>OEM and project supply<\/h3>\n          <p>\n            Support for OEM labels, project documentation, packaging and bulk\n            supply for distributors, contractors and equipment builders.\n          <\/p>\n        <\/div>\n\n        <div class=\"leeyee-t12-card\">\n          <h3>Application documents<\/h3>\n          <p>\n            Support with datasheets, product images, installation references and\n            basic selection communication for B2B buyers.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"related\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">Related Guides<\/div>\n      <h2 class=\"leeyee-t12-title\">Continue Your SPD Selection<\/h2>\n\n      <div class=\"leeyee-t12-related\">\n        <a href=\"https:\/\/www.cnspd.com\/spd-type1-vs-type2-vs-type-3\/\" target=\"_blank\" rel=\"noopener\">\n          Type 1 vs Type 2 vs Type 3 SPD\n          <span>Compare SPD classes by position, waveform and protection role.<\/span>\n        <\/a>\n\n        <a href=\"https:\/\/www.cnspd.com\/type-2-spd\/\" target=\"_blank\" rel=\"noopener\">\n          Type 2 SPD\n          <span>Learn distribution-level SPD selection and applications.<\/span>\n        <\/a>\n\n        <a href=\"https:\/\/www.cnspd.com\/shop\/surge-protective-device\/\" target=\"_blank\" rel=\"noopener\">\n          Surge Protective Devices\n          <span>Browse AC, DC, solar PV and signal surge protection products.<\/span>\n        <\/a>\n\n        <a href=\"https:\/\/www.cnspd.com\/solar-spd\/\" target=\"_blank\" rel=\"noopener\">\n          Solar SPD\n          <span>Understand surge protection for photovoltaic systems.<\/span>\n        <\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"faq\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-eyebrow\">FAQ<\/div>\n      <h2 class=\"leeyee-t12-title\">Type 1+2 SPD FAQ<\/h2>\n\n      <div class=\"leeyee-t12-faq\">\n        <details>\n          <summary>What does Type 1+2 SPD mean?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>Type 1+2 SPD means a surge protective device tested for both Type 1\/Class I and Type 2\/Class II duties. It can handle lightning-current impulse duty and distribution-level surge protection in one device.<\/p>\n          <\/div>\n        <\/details>\n\n        <details>\n          <summary>Is Type 1+2 SPD the same as Type 1 SPD?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>No. A Type 1 SPD is tested for Type 1 duty, while a Type 1+2 SPD is tested for both Type 1 and Type 2 duties. The actual product ratings must still be checked.<\/p>\n          <\/div>\n        <\/details>\n\n        <details>\n          <summary>Is Type 1+2 SPD better than Type 2 SPD?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>Not always. Type 1+2 is suitable when Type 1 duty is required. If the installation only needs distribution-level surge protection, a correctly selected Type 2 SPD may be enough.<\/p>\n          <\/div>\n        <\/details>\n\n        <details>\n          <summary>Where is a Type 1+2 SPD installed?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>It is commonly installed at the origin of the installation or in the main distribution board, depending on the system design and protection concept.<\/p>\n          <\/div>\n        <\/details>\n\n        <details>\n          <summary>Does a Type 1+2 SPD remove the need for downstream SPDs?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>Not always. Long cable runs, downstream distribution boards and sensitive equipment may still require coordinated Type 2 or Type 3 protection.<\/p>\n          <\/div>\n        <\/details>\n\n        <details>\n          <summary>Can an AC Type 1+2 SPD be used on PV DC circuits?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>No. PV DC circuits require PV-specific SPDs with suitable DC voltage and disconnection characteristics.<\/p>\n          <\/div>\n        <\/details>\n\n        <details>\n          <summary>What information is needed to select a Type 1+2 SPD?<\/summary>\n          <div class=\"leeyee-t12-faq-body\">\n            <p>Provide AC or DC application, nominal voltage, earthing system, installation position, poles, required Iimp, In or Imax, Up, short-circuit conditions and project quantity.<\/p>\n          <\/div>\n        <\/details>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"leeyee-t12-section\" id=\"request-selection\">\n    <div class=\"leeyee-t12-container\">\n      <div class=\"leeyee-t12-cta-band\">\n        <h2>Need Help Selecting a Type 1+2 SPD?<\/h2>\n\n        <p>\n          Send your AC or PV DC application, system voltage, earthing arrangement,\n          installation position, poles, required ratings and project quantity.\n          LEEYEE will help identify a suitable Type 1+2 surge protection option.\n        <\/p>\n\n        <button type=\"button\" class=\"leeyee-t12-btn leeyee-t12-btn-white leeyee-site-popup-btn\" aria-label=\"Request Type 1+2 SPD Selection\">\n          <span class=\"w-btn-label\">Request Type 1+2 SPD Selection<\/span>\n        <\/button>\n      <\/div>\n    <\/div>\n  <\/section>\n\n<\/div>\n\n<script>\n  document.addEventListener('DOMContentLoaded', function () {\n    var type12PopupButtons = document.querySelectorAll('.leeyee-site-popup-btn');\n\n    type12PopupButtons.forEach(function (button) {\n      button.addEventListener('click', function () {\n        var realPopupTrigger = document.querySelector('.w-popup.ush_popup_1 .w-popup-trigger');\n\n        if (realPopupTrigger) {\n          realPopupTrigger.click();\n        } else {\n          window.open('https:\/\/www.cnspd.com\/contact\/', '_blank', 'noopener');\n        }\n      });\n    });\n  });\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does Type 1+2 SPD mean?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Type 1+2 SPD means a surge protective device tested for both Type 1\/Class I and Type 2\/Class II duties. It can handle lightning-current impulse duty and distribution-level surge protection in one device.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is Type 1+2 SPD the same as Type 1 SPD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. A Type 1 SPD is tested for Type 1 duty, while a Type 1+2 SPD is tested for both Type 1 and Type 2 duties. The actual product ratings must still be checked.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is Type 1+2 SPD better than Type 2 SPD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Not always. Type 1+2 is suitable when Type 1 duty is required. 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Long cable runs, downstream distribution boards and sensitive equipment may still require coordinated Type 2 or Type 3 protection.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can an AC Type 1+2 SPD be used on PV DC circuits?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. PV DC circuits require PV-specific SPDs with suitable DC voltage and disconnection characteristics.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What information is needed to select a Type 1+2 SPD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Provide AC or DC application, nominal voltage, earthing system, installation position, poles, required Iimp, In or Imax, Up, short-circuit conditions and project quantity.\"\n      }\n    }\n  ]\n}\n<\/script><\/div><\/div><\/div><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"Gu\u00eda de selecci\u00f3n de SPD Tipo 1+2 SPD Tipo 1+2: Qu\u00e9 significa y cu\u00e1ndo usarlo Un SPD Tipo 1+2 combina la capacidad de corriente de rayo de Clase I y la protecci\u00f3n contra sobretensiones de nivel de distribuci\u00f3n de Clase II en un solo dispositivo. Se utiliza com\u00fanmente en el origen de una instalaci\u00f3n donde se requieren tareas de protecci\u00f3n tanto de Tipo 1 como de Tipo 2....","protected":false},"author":18,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-29517","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Type 1+2 SPD: When to Use It &amp; How to Select the Right One<\/title>\n<meta name=\"description\" content=\"Need a Type 1+2 SPD? Learn when combined Class I+II surge protection is required, when Type 2 is enough, and how to check Iimp, In, Uc and Up.\" \/>\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\/type-1-2-spd\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Type 1+2 SPD: When to Use It &amp; How to Select the Right One\" \/>\n<meta property=\"og:description\" content=\"Need a Type 1+2 SPD? 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Aprenda cu\u00e1ndo se requiere la protecci\u00f3n contra sobretensiones de Clase I+II combinada, cu\u00e1ndo es suficiente el Tipo 2 y c\u00f3mo verificar Iimp, In, Uc y Up.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.cnspd.com\/es\/type-1-2-spd\/","og_locale":"es_ES","og_type":"article","og_title":"Type 1+2 SPD: When to Use It & How to Select the Right One","og_description":"Need a Type 1+2 SPD? 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