{"id":29697,"date":"2026-07-01T13:20:42","date_gmt":"2026-07-01T05:20:42","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=29697"},"modified":"2026-07-01T15:14:50","modified_gmt":"2026-07-01T07:14:50","slug":"spd-in-rating-selection-how-to-choose-the-right-nominal-discharge-current","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/de\/spd-in-rating-selection\/","title":{"rendered":"SPD In Nennstromauswahl: Wie man den richtigen Nennentladungsstrom w\u00e4hlt"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"29697\" class=\"elementor elementor-29697\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f096a7c e-flex e-con-boxed e-con e-parent\" data-id=\"f096a7c\" 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-954386a elementor-widget elementor-widget-html\" data-id=\"954386a\" 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<style>\r\n  .cnspd-in-article {\r\n    --brand: #004898;\r\n    --brand-dark: #00366f;\r\n    --soft: #f7fbff;\r\n    --soft-2: #eef5ff;\r\n    --border: #d9e9f8;\r\n    --text: #1d2733;\r\n    --muted: #5d6b7a;\r\n    --warning: #fff7e8;\r\n    --warning-border: #f1c46b;\r\n    max-width: 860px;\r\n    margin: 0 auto;\r\n    padding: 24px 18px 64px;\r\n    color: var(--text);\r\n    font-size: 17px;\r\n    line-height: 1.72;\r\n  }\r\n\r\n  .cnspd-in-article * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .cnspd-in-article a {\r\n    color: var(--brand);\r\n    text-decoration: none;\r\n    font-weight: 600;\r\n  }\r\n\r\n  .cnspd-in-article a:hover {\r\n    text-decoration: underline;\r\n  }\r\n\r\n  .cnspd-in-eyebrow {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    gap: 8px;\r\n    margin-bottom: 14px;\r\n    padding: 6px 12px;\r\n    border: 1px solid var(--border);\r\n    border-radius: 999px;\r\n    background: var(--soft);\r\n    color: var(--brand);\r\n    font-size: 14px;\r\n    font-weight: 700;\r\n  }\r\n\r\n  .cnspd-in-lead {\r\n    margin: 0 0 24px;\r\n    font-size: 20px;\r\n    line-height: 1.55;\r\n    color: #243244;\r\n  }\r\n\r\n  .cnspd-in-note {\r\n    margin: 20px 0 28px;\r\n    padding: 16px 18px;\r\n    border-left: 4px solid var(--brand);\r\n    border-radius: 10px;\r\n    background: var(--soft);\r\n  }\r\n\r\n  .cnspd-in-note p {\r\n    margin: 0;\r\n  }\r\n\r\n  .cnspd-in-figure {\r\n    margin: 26px 0 34px;\r\n  }\r\n\r\n  .cnspd-in-figure img {\r\n    display: block;\r\n    width: 100%;\r\n    height: auto;\r\n    border: 1px solid var(--border);\r\n    border-radius: 18px;\r\n    background: #ffffff;\r\n    box-shadow: 0 12px 30px rgba(0, 72, 152, 0.09);\r\n  }\r\n\r\n  .cnspd-in-figure figcaption {\r\n    margin-top: 9px;\r\n    color: var(--muted);\r\n    font-size: 14px;\r\n    line-height: 1.5;\r\n    text-align: center;\r\n  }\r\n\r\n  .cnspd-in-section {\r\n    margin-top: 42px;\r\n  }\r\n\r\n  .cnspd-in-section h2 {\r\n    margin: 0 0 16px;\r\n    color: #111827;\r\n    font-size: 30px;\r\n    line-height: 1.25;\r\n  }\r\n\r\n  .cnspd-in-section h3 {\r\n    margin: 28px 0 10px;\r\n    color: #152238;\r\n    font-size: 23px;\r\n    line-height: 1.35;\r\n  }\r\n\r\n  .cnspd-in-section p {\r\n    margin: 0 0 16px;\r\n  }\r\n\r\n  .cnspd-in-quick {\r\n    margin: 28px 0 34px;\r\n    padding: 24px;\r\n    border: 1px solid var(--border);\r\n    border-radius: 18px;\r\n    background: linear-gradient(180deg, #ffffff 0%, var(--soft) 100%);\r\n    box-shadow: 0 12px 28px rgba(0, 72, 152, 0.08);\r\n  }\r\n\r\n  .cnspd-in-quick-title {\r\n    margin: 0 0 10px;\r\n    color: var(--brand);\r\n    font-size: 21px;\r\n    font-weight: 800;\r\n  }\r\n\r\n  .cnspd-in-quick p {\r\n    margin: 0 0 14px;\r\n  }\r\n\r\n  .cnspd-in-quick strong {\r\n    color: #111827;\r\n  }\r\n\r\n  .cnspd-in-mini-cta {\r\n    margin-top: 18px;\r\n    padding-top: 16px;\r\n    border-top: 1px solid var(--border);\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 12px;\r\n    align-items: center;\r\n    justify-content: space-between;\r\n  }\r\n\r\n  .cnspd-in-mini-cta-text {\r\n    color: var(--muted);\r\n    font-size: 15px;\r\n  }\r\n\r\n  .cnspd-in-btn {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    min-height: 42px;\r\n    padding: 10px 18px;\r\n    border-radius: 999px;\r\n    background: var(--brand);\r\n    color: #ffffff !important;\r\n    font-size: 15px;\r\n    font-weight: 800;\r\n    text-decoration: none !important;\r\n    transition: 0.2s ease;\r\n    cursor: pointer;\r\n  }\r\n\r\n  .cnspd-in-btn:hover {\r\n    background: var(--brand-dark);\r\n    transform: translateY(-1px);\r\n    text-decoration: none !important;\r\n  }\r\n\r\n  .cnspd-in-btn-light {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    min-height: 42px;\r\n    padding: 10px 18px;\r\n    border: 1px solid var(--brand);\r\n    border-radius: 999px;\r\n    background: #ffffff;\r\n    color: var(--brand) !important;\r\n    font-size: 15px;\r\n    font-weight: 800;\r\n    text-decoration: none !important;\r\n    transition: 0.2s ease;\r\n  }\r\n\r\n  .cnspd-in-btn-light:hover {\r\n    background: var(--soft);\r\n    transform: translateY(-1px);\r\n    text-decoration: none !important;\r\n  }\r\n\r\n  .cnspd-in-btn > span,\r\n  .leeyee-site-popup-btn > span {\r\n    position: relative;\r\n    z-index: 3;\r\n    display: inline-block;\r\n    color: #ffffff !important;\r\n    opacity: 1 !important;\r\n    visibility: visible !important;\r\n    line-height: 1.2;\r\n    text-decoration: none !important;\r\n  }\r\n\r\n  .cnspd-in-btn-light > span {\r\n    color: var(--brand) !important;\r\n  }\r\n\r\n  .cnspd-in-final-cta .cnspd-in-btn > span {\r\n    color: var(--brand) !important;\r\n  }\r\n\r\n  .cnspd-in-table-wrap {\r\n    width: 100%;\r\n    margin: 20px 0 28px;\r\n    overflow-x: auto;\r\n    border: 1px solid var(--border);\r\n    border-radius: 14px;\r\n    background: #ffffff;\r\n  }\r\n\r\n  .cnspd-in-table {\r\n    width: 100%;\r\n    min-width: 680px;\r\n    border-collapse: collapse;\r\n  }\r\n\r\n  .cnspd-in-table th,\r\n  .cnspd-in-table td {\r\n    padding: 14px 16px;\r\n    border-bottom: 1px solid var(--border);\r\n    vertical-align: top;\r\n    text-align: left;\r\n  }\r\n\r\n  .cnspd-in-table th {\r\n    background: var(--brand);\r\n    color: #ffffff;\r\n    font-size: 15px;\r\n    line-height: 1.35;\r\n  }\r\n\r\n  .cnspd-in-table tr:last-child td {\r\n    border-bottom: 0;\r\n  }\r\n\r\n  .cnspd-in-table td:first-child {\r\n    width: 150px;\r\n    font-weight: 800;\r\n    color: var(--brand);\r\n  }\r\n\r\n  .cnspd-in-badge {\r\n    display: inline-block;\r\n    padding: 4px 9px;\r\n    border-radius: 999px;\r\n    background: var(--soft-2);\r\n    color: var(--brand);\r\n    font-size: 13px;\r\n    font-weight: 800;\r\n    white-space: nowrap;\r\n  }\r\n\r\n  .cnspd-in-warning {\r\n    margin: 26px 0;\r\n    padding: 20px 22px;\r\n    border: 1px solid var(--warning-border);\r\n    border-left: 5px solid #d28b00;\r\n    border-radius: 14px;\r\n    background: var(--warning);\r\n  }\r\n\r\n  .cnspd-in-warning strong {\r\n    color: #7a4c00;\r\n  }\r\n\r\n  .cnspd-in-checklist {\r\n    margin: 24px 0;\r\n    padding: 24px;\r\n    border: 1px solid var(--border);\r\n    border-radius: 18px;\r\n    background: var(--soft);\r\n  }\r\n\r\n  .cnspd-in-checklist ul,\r\n  .cnspd-in-list {\r\n    margin: 12px 0 0;\r\n    padding-left: 20px;\r\n  }\r\n\r\n  .cnspd-in-checklist li,\r\n  .cnspd-in-list li {\r\n    margin: 8px 0;\r\n  }\r\n\r\n  .cnspd-in-cards {\r\n    display: grid;\r\n    grid-template-columns: repeat(3, 1fr);\r\n    gap: 14px;\r\n    margin: 20px 0 30px;\r\n  }\r\n\r\n  .cnspd-in-card {\r\n    padding: 18px;\r\n    border: 1px solid var(--border);\r\n    border-radius: 16px;\r\n    background: #ffffff;\r\n  }\r\n\r\n  .cnspd-in-card h3 {\r\n    margin: 0 0 8px;\r\n    color: var(--brand);\r\n    font-size: 20px;\r\n  }\r\n\r\n  .cnspd-in-card p {\r\n    margin: 0;\r\n    color: var(--muted);\r\n    font-size: 15px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  .cnspd-in-flow {\r\n    margin: 24px 0 30px;\r\n    padding: 22px;\r\n    border: 1px solid var(--border);\r\n    border-radius: 18px;\r\n    background: #ffffff;\r\n  }\r\n\r\n  .cnspd-in-flow-row {\r\n    display: grid;\r\n    grid-template-columns: 1fr 34px 1fr 34px 1fr;\r\n    gap: 10px;\r\n    align-items: center;\r\n  }\r\n\r\n  .cnspd-in-flow-step {\r\n    min-height: 86px;\r\n    padding: 16px;\r\n    border-radius: 14px;\r\n    background: var(--soft);\r\n    border: 1px solid var(--border);\r\n  }\r\n\r\n  .cnspd-in-flow-step strong {\r\n    display: block;\r\n    color: var(--brand);\r\n    margin-bottom: 6px;\r\n  }\r\n\r\n  .cnspd-in-flow-arrow {\r\n    color: var(--brand);\r\n    font-size: 24px;\r\n    font-weight: 900;\r\n    text-align: center;\r\n  }\r\n\r\n  .cnspd-in-faq {\r\n    margin-top: 20px;\r\n    border-top: 1px solid var(--border);\r\n  }\r\n\r\n  .cnspd-in-faq-item {\r\n    padding: 18px 0;\r\n    border-bottom: 1px solid var(--border);\r\n  }\r\n\r\n  .cnspd-in-faq-item h3 {\r\n    margin: 0 0 8px;\r\n    font-size: 20px;\r\n    color: #111827;\r\n  }\r\n\r\n  .cnspd-in-faq-item p {\r\n    margin: 0;\r\n  }\r\n\r\n  .cnspd-in-final-cta {\r\n    margin-top: 42px;\r\n    padding: 28px;\r\n    border-radius: 20px;\r\n    background: linear-gradient(135deg, var(--brand) 0%, #0a63c7 100%);\r\n    color: #ffffff;\r\n  }\r\n\r\n  .cnspd-in-final-cta h2 {\r\n    margin: 0 0 10px;\r\n    color: #ffffff;\r\n    font-size: 28px;\r\n  }\r\n\r\n  .cnspd-in-final-cta p {\r\n    margin: 0 0 18px;\r\n    color: rgba(255, 255, 255, 0.92);\r\n  }\r\n\r\n  .cnspd-in-final-cta .cnspd-in-btn {\r\n    background: #ffffff;\r\n    color: var(--brand) !important;\r\n  }\r\n\r\n  .cnspd-in-final-cta .cnspd-in-btn:hover {\r\n    background: #eef5ff;\r\n  }\r\n\r\n  .cnspd-in-related {\r\n    margin-top: 36px;\r\n    padding: 22px;\r\n    border: 1px solid var(--border);\r\n    border-radius: 18px;\r\n    background: #ffffff;\r\n  }\r\n\r\n  .cnspd-in-related h2 {\r\n    margin-top: 0;\r\n  }\r\n\r\n  .cnspd-in-related ul {\r\n    margin: 0;\r\n    padding-left: 20px;\r\n  }\r\n\r\n  .cnspd-in-related li {\r\n    margin: 9px 0;\r\n  }\r\n\r\n  @media (max-width: 768px) {\r\n    .cnspd-in-article {\r\n      padding: 18px 14px 48px;\r\n      font-size: 16px;\r\n      line-height: 1.68;\r\n    }\r\n\r\n    .cnspd-in-lead {\r\n      font-size: 18px;\r\n    }\r\n\r\n    .cnspd-in-section h2 {\r\n      font-size: 25px;\r\n    }\r\n\r\n    .cnspd-in-section h3 {\r\n      font-size: 20px;\r\n    }\r\n\r\n    .cnspd-in-quick,\r\n    .cnspd-in-checklist,\r\n    .cnspd-in-flow,\r\n    .cnspd-in-final-cta,\r\n    .cnspd-in-related {\r\n      padding: 18px;\r\n      border-radius: 16px;\r\n    }\r\n\r\n    .cnspd-in-cards {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .cnspd-in-flow-row {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .cnspd-in-flow-arrow {\r\n      transform: rotate(90deg);\r\n      line-height: 1;\r\n    }\r\n\r\n    .cnspd-in-mini-cta {\r\n      align-items: flex-start;\r\n      flex-direction: column;\r\n    }\r\n\r\n    .cnspd-in-btn,\r\n    .cnspd-in-btn-light {\r\n      width: 100%;\r\n    }\r\n\r\n    .cnspd-in-figure {\r\n      margin: 22px 0 30px;\r\n    }\r\n\r\n    .cnspd-in-figure img {\r\n      border-radius: 14px;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<article class=\"cnspd-in-article\">\r\n  <div class=\"cnspd-in-eyebrow\">SPD parameter guide \u00b7 In rating selection<\/div>\r\n\r\n  <p class=\"cnspd-in-lead\">\r\n    Not sure whether a surge protective device should use 5kA, 10kA or 20kA In?\r\n    This guide explains what In means, how it differs from Imax, and what buyers should confirm before ordering Type 2 SPDs for distribution boards, control cabinets, PV boxes and OEM panels.\r\n  <\/p>\r\n\r\n  <div class=\"cnspd-in-note\">\r\n    <p>\r\n      <strong>Important:<\/strong> SPD selection is not based on In alone.\r\n      For the complete selection path, including AC\/DC type, Uc, Iimp, Imax, Up, poles, earthing system and backup protection, see our\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-selection-guide\/\" target=\"_blank\" rel=\"noopener\">complete SPD Selection Guide<\/a>.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <section class=\"cnspd-in-quick\" id=\"quick-answer\">\r\n    <div class=\"cnspd-in-quick-title\">Quick answer: what In rating should you choose?<\/div>\r\n    <p>\r\n      <strong>For many standard Type 2 SPD applications, 10kA In is a common practical choice.<\/strong>\r\n      For higher-exposure distribution boards, industrial panels, PV combiner boxes, or OEM products expected to handle more repeated surge stress, buyers often consider 20kA In.\r\n    <\/p>\r\n    <p>\r\n      In shows the SPD\u2019s nominal discharge current under defined 8\/20 \u03bcs surge test conditions.\r\n      It is useful for comparing repeated surge discharge capability.\r\n      Imax shows a higher maximum discharge current, but it should not be used alone to judge the SPD.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-mini-cta\">\r\n      <span class=\"cnspd-in-mini-cta-text\">Need to check In, Imax, Uc and pole configuration together?<\/span>\r\n      <a class=\"cnspd-in-btn leeyee-site-popup-btn\" href=\"javascript:void(0);\">\r\n        <span>Ask for SPD Rating Check<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <figure class=\"cnspd-in-figure\">\r\n    <img\r\n      src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-rating-check-before-ordering.webp\"\r\n      alt=\"SPD In rating selection guide for 5kA 10kA and 20kA surge protective devices\"\r\n      loading=\"lazy\"\r\n      decoding=\"async\"\r\n    \/>\r\n    <figcaption>Quick visual guide for choosing 5kA, 10kA or 20kA In rating before ordering SPDs.<\/figcaption>\r\n  <\/figure>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"selection-table\">\r\n    <div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 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\/de\/spd-in-rating-selection\/#quick-selection-table-for-spd-in-rating\" >Quick selection table for SPD In rating<\/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\/de\/spd-in-rating-selection\/#what-does-in-mean-on-an-spd\" >What does In mean on an SPD?<\/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\/de\/spd-in-rating-selection\/#in-vs-imax-what-is-the-difference\" >In vs Imax: what is the difference?<\/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\/de\/spd-in-rating-selection\/#how-to-choose-in-rating-for-type-2-spd\" >How to choose In rating for Type 2 SPD<\/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\/de\/spd-in-rating-selection\/#common-in-rating-choices-by-application\" >Common In rating choices by application<\/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\/de\/spd-in-rating-selection\/#what-happens-if-the-in-rating-is-too-low\" >What happens if the In rating is too low?<\/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\/de\/spd-in-rating-selection\/#what-buyers-should-confirm-before-ordering\" >What buyers should confirm before ordering<\/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\/de\/spd-in-rating-selection\/#common-mistakes-when-comparing-in-rating\" >Common mistakes when comparing In rating<\/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\/de\/spd-in-rating-selection\/#a-simple-answer-sales-teams-can-send-to-buyers\" >A simple answer sales teams can send to buyers<\/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\/de\/spd-in-rating-selection\/#spd-in-rating-faq\" >SPD In rating FAQ<\/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\/de\/spd-in-rating-selection\/#related-spd-selection-pages\" >Related SPD selection pages<\/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\/de\/spd-in-rating-selection\/#need-help-checking-spd-in-rating\" >Need help checking SPD In rating?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"quick-selection-table-for-spd-in-rating\"><\/span>Quick selection table for SPD In rating<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      Use this table as a first screening tool.\r\n      Final selection should follow the project specification, local electrical rules, installation position and the manufacturer\u2019s datasheet.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-table-wrap\">\r\n      <table class=\"cnspd-in-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>In rating<\/th>\r\n            <th>Typical buyer meaning<\/th>\r\n            <th>Common application direction<\/th>\r\n            <th>What to confirm before ordering<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>5kA<\/td>\r\n            <td>Basic nominal discharge capacity for lower-demand protection.<\/td>\r\n            <td>Small panels, light-duty applications, or projects where the specification accepts a lower In value.<\/td>\r\n            <td>Check whether the project requires 10kA or 20kA In instead. Do not use only price to decide.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>10kA<\/td>\r\n            <td>Common practical level for many Type 2 SPD applications.<\/td>\r\n            <td>Distribution boards, commercial panels, OEM electrical cabinets and many standard AC SPD applications.<\/td>\r\n            <td>Check Imax, Uc, Up, pole configuration, backup protection and standard compliance together.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>20kA<\/td>\r\n            <td>Higher nominal discharge capacity for stronger repeated surge duty.<\/td>\r\n            <td>Industrial panels, exposed sites, PV combiner boxes, main sub-distribution boards, and higher-spec OEM orders.<\/td>\r\n            <td>Confirm whether the system also needs Type 1 or Type 1+2 SPD, especially for high lightning exposure.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"what-is-in\">\r\n    <h2><span class=\"ez-toc-section\" id=\"what-does-in-mean-on-an-spd\"><\/span>What does In mean on an SPD?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      In means <strong>nominal discharge current<\/strong>.\r\n      It is usually shown in kA, such as 5kA, 10kA or 20kA.\r\n    <\/p>\r\n    <p>\r\n      For buyers, In tells you how the SPD is rated under defined repeated surge discharge conditions.\r\n      It is especially important for Type 2 SPDs, because Type 2 devices are commonly used in distribution boards, sub-panels, machine control cabinets and OEM electrical assemblies.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-warning\">\r\n      <p>\r\n        <strong>Buyer meaning:<\/strong>\r\n        In is not just another kA number on the label.\r\n        It helps you compare the SPD\u2019s regular discharge duty.\r\n        A product with a higher In rating is usually positioned for stronger repeated surge capability, but it still must match voltage, type, Up, installation and backup protection.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"in-vs-imax\">\r\n    <h2><span class=\"ez-toc-section\" id=\"in-vs-imax-what-is-the-difference\"><\/span>In vs Imax: what is the difference?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      Many buyers see a product marked as 10kA \/ 20kA or 20kA \/ 40kA and only focus on the larger number.\r\n      That is a common mistake.\r\n    <\/p>\r\n    <p>\r\n      In and Imax describe different parts of SPD performance.\r\n      They should be checked together.\r\n    <\/p>\r\n\r\n    <figure class=\"cnspd-in-figure\">\r\n      <img\r\n        src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-in-vs-imax-comparison.webp\"\r\n        alt=\"Difference between SPD In and Imax rating for surge protective devices\"\r\n        loading=\"lazy\"\r\n        decoding=\"async\"\r\n      \/>\r\n      <figcaption>In is used to compare regular discharge duty, while Imax shows the maximum surge rating under defined test conditions.<\/figcaption>\r\n    <\/figure>\r\n\r\n    <div class=\"cnspd-in-table-wrap\">\r\n      <table class=\"cnspd-in-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Parameter<\/th>\r\n            <th>Full name<\/th>\r\n            <th>Buyer meaning<\/th>\r\n            <th>Common misunderstanding<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>In<\/td>\r\n            <td>Nominal discharge current<\/td>\r\n            <td>Shows the SPD\u2019s repeated discharge capability under defined 8\/20 \u03bcs test conditions.<\/td>\r\n            <td>It is not the maximum discharge rating, but it is very important for comparing regular surge duty.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Imax<\/td>\r\n            <td>Maximum discharge current<\/td>\r\n            <td>Shows the maximum 8\/20 \u03bcs surge current the SPD can withstand under defined conditions.<\/td>\r\n            <td>A higher Imax alone does not mean the SPD is always the better choice.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p>\r\n      A 20kA \/ 40kA SPD and a 10kA \/ 40kA SPD should not be judged only by the 40kA value.\r\n      Buyers should check the full datasheet and confirm whether the In rating, Up value, Uc, SPD type and backup protection match the project.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"how-to-choose\">\r\n    <h2><span class=\"ez-toc-section\" id=\"how-to-choose-in-rating-for-type-2-spd\"><\/span>How to choose In rating for Type 2 SPD<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      The easiest way is to start from the installation position and expected surge exposure.\r\n      Do not start from the biggest kA number.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-flow\">\r\n      <div class=\"cnspd-in-flow-row\">\r\n        <div class=\"cnspd-in-flow-step\">\r\n          <strong>1. Confirm position<\/strong>\r\n          Main board, sub-board, control cabinet, PV combiner box or OEM panel.\r\n        <\/div>\r\n        <div class=\"cnspd-in-flow-arrow\">\u2192<\/div>\r\n        <div class=\"cnspd-in-flow-step\">\r\n          <strong>2. Check surge exposure<\/strong>\r\n          Indoor panel, outdoor line, exposed site, PV field or lightning-prone area.\r\n        <\/div>\r\n        <div class=\"cnspd-in-flow-arrow\">\u2192<\/div>\r\n        <div class=\"cnspd-in-flow-step\">\r\n          <strong>3. Match datasheet<\/strong>\r\n          Confirm In together with Imax, Uc, Up, poles, standard and backup protection.\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <h3>Choose 5kA In only when the requirement is clearly light-duty<\/h3>\r\n    <p>\r\n      A 5kA In SPD may be acceptable in some lower-demand applications.\r\n      However, it is not the first choice for many B2B buyers who need stronger product positioning, distributor stock, or OEM panel supply.\r\n    <\/p>\r\n\r\n    <h3>Choose 10kA In for many standard distribution board applications<\/h3>\r\n    <p>\r\n      10kA In is commonly used for Type 2 SPD applications in sub-distribution boards, commercial panels and standard electrical cabinets.\r\n      It gives buyers a practical balance between rating, cost and common market acceptance.\r\n    <\/p>\r\n\r\n    <h3>Choose 20kA In for higher-exposure or higher-spec projects<\/h3>\r\n    <p>\r\n      20kA In is more suitable when the SPD is expected to handle stronger repeated surge duty.\r\n      It is often considered for industrial panels, exposed installations, PV combiner boxes, and OEM products where a stronger rating is requested.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"application-examples\">\r\n    <h2><span class=\"ez-toc-section\" id=\"common-in-rating-choices-by-application\"><\/span>Common In rating choices by application<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      The table below is not a replacement for a datasheet.\r\n      It gives buyers a practical direction before requesting a quotation.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-table-wrap\">\r\n      <table class=\"cnspd-in-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Application<\/th>\r\n            <th>Common In direction<\/th>\r\n            <th>Reason<\/th>\r\n            <th>Related parameter to check<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>Small AC panel<\/td>\r\n            <td>5kA or 10kA<\/td>\r\n            <td>Lower surge exposure or basic panel protection, depending on project requirement.<\/td>\r\n            <td>Uc, Up, pole number, backup fuse or MCB.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Distribution board<\/td>\r\n            <td>10kA<\/td>\r\n            <td>Common Type 2 SPD direction for many commercial and industrial sub-panels.<\/td>\r\n            <td>Imax, Uc, Up, 1P\/2P\/3P\/4P, remote signal.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Industrial control cabinet<\/td>\r\n            <td>10kA or 20kA<\/td>\r\n            <td>Industrial environments may face switching surges and higher exposure.<\/td>\r\n            <td>Panel voltage, grounding, remote signal, backup protection.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>PV combiner box<\/td>\r\n            <td>20kA often preferred<\/td>\r\n            <td>PV systems are often exposed outdoors and may require stronger surge protection.<\/td>\r\n            <td>Ucpv, DC SPD standard, Imax, Type 2 or Type 1+2 requirement.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>OEM electrical panel<\/td>\r\n            <td>10kA or 20kA<\/td>\r\n            <td>Depends on target market, price level, customer specification and label positioning.<\/td>\r\n            <td>Brand label, certification, module width, replacement cartridge, packaging.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"wrong-selection\">\r\n    <h2><span class=\"ez-toc-section\" id=\"what-happens-if-the-in-rating-is-too-low\"><\/span>What happens if the In rating is too low?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      If the In rating is too low for the real application, the SPD may not have enough repeated surge discharge margin for that project.\r\n      This can increase maintenance pressure, replacement frequency and customer complaints.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-cards\">\r\n      <div class=\"cnspd-in-card\">\r\n        <h3>Shorter service margin<\/h3>\r\n        <p>The SPD may have less room for repeated surge events in demanding conditions.<\/p>\r\n      <\/div>\r\n      <div class=\"cnspd-in-card\">\r\n        <h3>Earlier replacement<\/h3>\r\n        <p>Panels in exposed areas may need module replacement sooner if the rating is not suitable.<\/p>\r\n      <\/div>\r\n      <div class=\"cnspd-in-card\">\r\n        <h3>Wrong product positioning<\/h3>\r\n        <p>A low In value may not match the expectation of distributors, OEM buyers or project engineers.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <div class=\"cnspd-in-warning\">\r\n      <p>\r\n        <strong>Do not overcorrect either.<\/strong>\r\n        Higher In can be useful, but it does not replace correct Uc, suitable Up, proper installation, grounding, short connection leads and coordinated backup protection.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"before-ordering\">\r\n    <h2><span class=\"ez-toc-section\" id=\"what-buyers-should-confirm-before-ordering\"><\/span>What buyers should confirm before ordering<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      Before confirming an SPD order, send the supplier more than just \u201cI need 40kA SPD\u201d.\r\n      A better request includes the real electrical and panel information.\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-checklist\">\r\n      <strong>Before choosing SPD In rating, please confirm:<\/strong>\r\n      <ul>\r\n        <li>Application: distribution board, control cabinet, PV combiner box, inverter side, or OEM panel.<\/li>\r\n        <li>Circuit type: AC distribution, PV DC, battery DC, signal, or equipment-side protection.<\/li>\r\n        <li>System voltage: for example 230\/400V AC, 480V AC, 1000V DC, or 1500V DC.<\/li>\r\n        <li>SPD type: Type 1, Type 2, Type 1+2, or Type 3.<\/li>\r\n        <li>Required In rating: 5kA, 10kA, 20kA, or project-specified value.<\/li>\r\n        <li>Imax rating: such as 20kA, 40kA, 60kA or other requirement.<\/li>\r\n        <li>Uc or Ucpv: must match the real system voltage and application.<\/li>\r\n        <li>Up value: should be suitable for the protected equipment.<\/li>\r\n        <li>Poles and wiring: 1P, 2P, 3P, 4P, 3P+N, or PV DC configuration.<\/li>\r\n        <li>Earthing system: TT, TN-S, TN-C-S, IT, or project-specific design.<\/li>\r\n        <li>Backup protection: fuse or MCB according to the SPD datasheet.<\/li>\r\n        <li>Certification and standard requirement: IEC, EN, CE, TUV, CB, UL or project approval.<\/li>\r\n        <li>OEM details: private label, packaging, model name, replacement cartridge and quantity.<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"mistakes\">\r\n    <h2><span class=\"ez-toc-section\" id=\"common-mistakes-when-comparing-in-rating\"><\/span>Common mistakes when comparing In rating<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <h3>Only comparing the largest kA number<\/h3>\r\n    <p>\r\n      Some buyers compare only Imax because it looks bigger on the label.\r\n      This can hide important differences in In, Up, Uc, SPD type and standard.\r\n    <\/p>\r\n\r\n    <h3>Using the same In requirement for every application<\/h3>\r\n    <p>\r\n      A small indoor panel, a PV combiner box and an exposed industrial cabinet do not have the same surge environment.\r\n      The In rating should match the application.\r\n    <\/p>\r\n\r\n    <h3>Ignoring Type 1 or Type 1+2 requirements<\/h3>\r\n    <p>\r\n      If the installation is at the service entrance or in a high lightning exposure area, Type 2 SPD with only In and Imax may not be enough.\r\n      The project may need Type 1 or Type 1+2 protection with Iimp rating.\r\n    <\/p>\r\n\r\n    <h3>Forgetting the voltage and protection level<\/h3>\r\n    <p>\r\n      In rating does not tell you whether the SPD voltage is correct.\r\n      Always check Uc or Ucpv, and also confirm Up for the protected equipment.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"sales-answer\">\r\n    <h2><span class=\"ez-toc-section\" id=\"a-simple-answer-sales-teams-can-send-to-buyers\"><\/span>A simple answer sales teams can send to buyers<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      If a customer asks \u201cShould I choose 10kA or 20kA In?\u201d, you can answer like this:\r\n    <\/p>\r\n\r\n    <div class=\"cnspd-in-note\">\r\n      <p>\r\n        For many standard Type 2 SPD applications, 10kA In is a common choice.\r\n        For higher-exposure panels, industrial systems, PV combiner boxes, or stronger OEM specifications, 20kA In may be more suitable.\r\n        Please also confirm Imax, Uc or Ucpv, Up, SPD type, poles, earthing system and backup protection before final selection.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-section\" id=\"faq\">\r\n    <h2><span class=\"ez-toc-section\" id=\"spd-in-rating-faq\"><\/span>SPD In rating FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"cnspd-in-faq\">\r\n      <div class=\"cnspd-in-faq-item\">\r\n        <h3>What is In rating in an SPD?<\/h3>\r\n        <p>\r\n          In is the nominal discharge current of a surge protective device.\r\n          It is usually expressed in kA and is used to show the SPD\u2019s discharge capability under defined 8\/20 \u03bcs surge test conditions.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cnspd-in-faq-item\">\r\n        <h3>Is 10kA In enough for a Type 2 SPD?<\/h3>\r\n        <p>\r\n          10kA In is commonly used for many Type 2 SPD applications in distribution boards and standard electrical panels.\r\n          However, final selection depends on surge exposure, installation position, project specification and datasheet requirements.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cnspd-in-faq-item\">\r\n        <h3>When should I choose 20kA In?<\/h3>\r\n        <p>\r\n          20kA In is often considered for higher-exposure applications, industrial panels, PV combiner boxes, exposed sites and OEM orders where stronger repeated surge capability is requested.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cnspd-in-faq-item\">\r\n        <h3>What is the difference between In and Imax?<\/h3>\r\n        <p>\r\n          In is the nominal discharge current used to compare regular repeated surge discharge duty.\r\n          Imax is the maximum discharge current under defined 8\/20 \u03bcs conditions.\r\n          Buyers should check both values, not only the larger Imax number.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cnspd-in-faq-item\">\r\n        <h3>Does higher In always mean better protection?<\/h3>\r\n        <p>\r\n          Not always.\r\n          Higher In can provide stronger discharge margin, but correct SPD selection also depends on voltage rating, Up, SPD type, pole configuration, earthing system, backup protection and installation quality.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <div class=\"cnspd-in-faq-item\">\r\n        <h3>Can I choose SPD only by In rating?<\/h3>\r\n        <p>\r\n          No.\r\n          In is important, but SPD selection should also include AC\/DC system type, Uc or Ucpv, Imax, Iimp if required, Up, poles, grounding system, backup fuse or MCB, and applicable standards.\r\n        <\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-related\" id=\"related-reading\">\r\n    <h2><span class=\"ez-toc-section\" id=\"related-spd-selection-pages\"><\/span>Related SPD selection pages<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <ul>\r\n      <li><a href=\"https:\/\/www.cnspd.com\/spd-selection-guide\/\" target=\"_blank\" rel=\"noopener\">Complete SPD Selection Guide<\/a> \u2014 for the full parameter and application selection path.<\/li>\r\n      <li><a href=\"https:\/\/www.cnspd.com\/spd-imax-selection\/\" target=\"_blank\" rel=\"noopener\">SPD Imax Selection Guide<\/a> \u2014 for understanding how to choose 20kA, 40kA, 60kA or higher Imax ratings.<\/li>\r\n      <li><a href=\"https:\/\/www.cnspd.com\/type-2-din-rail-surge-protector\/\" target=\"_blank\" rel=\"noopener\">Type 2 DIN Rail Surge Protector<\/a> \u2014 for Type 2 SPD product direction.<\/li>\r\n      <li><a href=\"https:\/\/www.cnspd.com\/type-1-2-din-rail-surge-protector\/\" target=\"_blank\" rel=\"noopener\">Type 1+2 DIN Rail Surge Protector<\/a> \u2014 for higher exposure and incoming panel applications.<\/li>\r\n      <li><a href=\"https:\/\/www.cnspd.com\/solar-spd\/\" target=\"_blank\" rel=\"noopener\">Solar SPD<\/a> \u2014 for PV DC and solar system surge protection.<\/li>\r\n    <\/ul>\r\n  <\/section>\r\n\r\n  <section class=\"cnspd-in-final-cta\">\r\n    <h2><span class=\"ez-toc-section\" id=\"need-help-checking-spd-in-rating\"><\/span>Need help checking SPD In rating?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      Send us your system voltage, application, SPD type, pole configuration, target In\/Imax rating and required certification.\r\n      LEEYEE can help recommend a suitable SPD direction for distribution boards, PV combiner boxes, industrial cabinets and OEM orders.\r\n    <\/p>\r\n    <a class=\"cnspd-in-btn leeyee-site-popup-btn\" href=\"javascript:void(0);\">\r\n      <span>Request SPD Model Recommendation<\/span>\r\n    <\/a>\r\n  <\/section>\r\n<\/article>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is In rating in an SPD?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"In is the nominal discharge current of a surge protective device. It is usually expressed in kA and is used to show the SPD's discharge capability under defined 8\/20 microsecond surge test conditions.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Is 10kA In enough for a Type 2 SPD?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"10kA In is commonly used for many Type 2 SPD applications in distribution boards and standard electrical panels. Final selection depends on surge exposure, installation position, project specification and datasheet requirements.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"When should I choose 20kA In?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"20kA In is often considered for higher-exposure applications, industrial panels, PV combiner boxes, exposed sites and OEM orders where stronger repeated surge capability is requested.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is the difference between In and Imax?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"In is the nominal discharge current used to compare regular repeated surge discharge duty. Imax is the maximum discharge current under defined 8\/20 microsecond conditions. Buyers should check both values, not only the larger Imax number.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Does higher In always mean better protection?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Not always. 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This guide explains what In means, how it differs from Imax, and what buyers should confirm before ordering Type 2 SPDs for distribution boards, control cabinets, PV boxes and OEM panels.Important: SPD selection is not&#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-29697","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 v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SPD In Rating Selection: How to Choose 5kA, 10kA or 20kA<\/title>\n<meta name=\"description\" content=\"Learn what SPD In rating means, how 5kA, 10kA and 20kA nominal discharge current differ, and what buyers should confirm before ordering Type 2 surge protective devices.\" \/>\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\/de\/spd-in-rating-selection\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SPD In Rating Selection: How to Choose 5kA, 10kA or 20kA\" \/>\n<meta property=\"og:description\" content=\"Learn what SPD In rating means, how 5kA, 10kA and 20kA nominal discharge current differ, and what buyers should confirm before ordering Type 2 surge protective devices.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cnspd.com\/de\/spd-in-rating-selection\/\" \/>\n<meta property=\"og:site_name\" content=\"Surge Protector, Surge Arrestor, Isolating Switch - 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