{"id":30819,"date":"2026-08-10T14:57:25","date_gmt":"2026-08-10T06:57:25","guid":{"rendered":"https:\/\/www.cnspd.com\/?page_id=30819"},"modified":"2026-08-10T15:21:55","modified_gmt":"2026-08-10T07:21:55","slug":"ac-surge-protective-devices-for-single-phase-and-three-phase-systems","status":"publish","type":"page","link":"https:\/\/www.cnspd.com\/id\/ac-spd-products\/","title":{"rendered":"Perangkat Proteksi Lonjakan AC untuk Sistem Satu Fase dan Tiga Fase"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"30819\" class=\"elementor elementor-30819\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b3cb23e e-flex e-con-boxed e-con e-parent\" data-id=\"b3cb23e\" 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-00c9de5 elementor-widget elementor-widget-html\" data-id=\"00c9de5\" 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<script>\r\n(function(){\r\n  'use strict';\r\n  var PAGE_URL='https:\/\/www.cnspd.com\/ac-spd-products\/';\r\n  var PAGE_TITLE='AC Surge Protective Devices for B2B Projects | LEEYEE';\r\n  var PAGE_DESCRIPTION='Compare LEEYEE AC SPD ranges by Type, Uc, poles and AC system. 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.hero-products{left:12px;right:12px;top:55px;bottom:58px;gap:6px}#ly-ac-ads .hero-visual-foot{left:12px;right:12px;bottom:12px;gap:5px}#ly-ac-ads .head h2{font-size:28px}#ly-ac-ads .product-media{padding:10px 14px}#ly-ac-ads .product-media img{height:245px;aspect-ratio:auto}#ly-ac-ads .product-actions{grid-template-columns:1fr}#ly-ac-ads .details{min-height:40px}#ly-ac-ads .mini-row{grid-template-columns:78px minmax(0,1fr)}#ly-ac-ads .form-card{padding:18px}#ly-ac-ads-popup{padding:9px}#ly-ac-ads-popup .dialog{max-height:calc(100dvh - 18px);border-radius:13px}#ly-ac-ads-popup .popup-head{padding:19px 54px 11px 17px}#ly-ac-ads-popup .popup-head h2{font-size:21px}#ly-ac-ads-popup .popup-body{padding:17px}}\r\n@media(max-width:430px){#ly-ac-ads .wrap{width:calc(100% - 22px)}#ly-ac-ads .hero h1{font-size:32px}#ly-ac-ads .btn{padding:0 14px;font-size:11px}#ly-ac-ads .uc-grid{grid-template-columns:1fr 1fr}#ly-ac-ads summary{font-size:13px;padding-right:40px}}\r\n@media(max-width:390px){#ly-ac-ads .wrap{width:calc(100% - 20px)}#ly-ac-ads .hero h1{font-size:30px}#ly-ac-ads .specs li{grid-template-columns:72px minmax(0,1fr)}#ly-ac-ads .mini-row{grid-template-columns:1fr}#ly-ac-ads .mini-row strong{padding-bottom:4px}#ly-ac-ads .mini-row span{padding-top:4px}}\r\n@media(max-width:320px){#ly-ac-ads .wrap{width:calc(100% - 18px)}#ly-ac-ads .hero h1{font-size:27px}#ly-ac-ads .nav .btn{padding:0 8px}}\r\n@media(prefers-reduced-motion:reduce){#ly-ac-ads *,#ly-ac-ads-popup *{scroll-behavior:auto!important;transition:none!important}}\r\n<\/style>\r\n\r\n<div id=\"ly-ac-ads\">\r\n  <nav class=\"nav\" aria-label=\"AC SPD ad landing page navigation\">\r\n    <div class=\"wrap nav-inner\">\r\n      <a class=\"brand\" href=\"#ac-ads-top\" aria-label=\"LEEYEE AC SPD landing page top\">\r\n        <span><strong>LEEYEE<\/strong><small>Built to Protect. Trusted to Last.<\/small><\/span>\r\n      <\/a>\r\n      <div class=\"nav-links\">\r\n        <a href=\"#ac-ads-products\">Products<\/a><a href=\"#ac-ads-selector\">Selection<\/a><a href=\"#ac-ads-engineering\">System &amp; Uc<\/a><a href=\"#ac-ads-proof\">Testing<\/a><a href=\"#ac-ads-faq\">FAQ<\/a>\r\n      <\/div>\r\n      <button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"AC SPD model selection\"><span class=\"w-btn-label\">Confirm AC SPD<\/span><\/button>\r\n    <\/div>\r\n  <\/nav>\r\n\r\n  <main>\r\n    <section class=\"hero\" id=\"ac-ads-top\">\r\n      <div class=\"wrap\">\r\n        <div class=\"hero-grid\">\r\n          <div class=\"hero-copy\">\r\n            <div class=\"eyebrow\">LEEYEE \u00b7 AC Low-Voltage SPD<\/div>\r\n            <h1><em>AC Surge Protective Devices<\/em> for Single-Phase and Three-Phase Systems<\/h1>\r\n            <p class=\"hero-lead\">For distributors, panel builders, OEM brands and electrical projects. Compare real LEEYEE AC SPD families by Type, Uc, pole arrangement and network\u2014then send the project details needed for model and document confirmation.<\/p>\r\n            <div class=\"hero-chips\"><span>Type 1 lightning-current duty<\/span><span>Type 1+2<\/span><span>Type 2<\/span><span>75\u2013440V AC versions<\/span><span>1P to 4P \/ +N options<\/span><span>DIN-rail ranges<\/span><\/div>\r\n            <div class=\"hero-actions\">\r\n              <button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"AC SPD model selection\"><span class=\"w-btn-label\">Confirm AC System &amp; SPD<\/span><\/button>\r\n              <a class=\"btn btn-outline\" href=\"#ac-ads-products\"><span class=\"w-btn-label\">View AC SPD Ranges<\/span><\/a>\r\n            <\/div>\r\n            <p class=\"hero-note\">Final selection depends on the actual voltage path, network, SPD duty, poles, Up, upstream backup protection and project requirements.<\/p>\r\n            <p class=\"scope-line\"><strong>Product scope:<\/strong> Low-voltage DIN-rail AC surge protective devices only\u2014not voltage protectors, stabilizers or power-strip surge products.<\/p>\r\n          <\/div>\r\n\r\n          <aside class=\"hero-visual\" aria-label=\"LEEYEE AC SPD product families\">\r\n            <div class=\"hero-visual-head\"><strong>LEEYEE AC SPD Range<\/strong><span>REAL PRODUCT FAMILIES<\/span><\/div>\r\n            <div class=\"hero-products\">\r\n              <div class=\"hero-product\"><img fetchpriority=\"high\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/ac-T1.webp\" width=\"1024\" height=\"1024\" loading=\"eager\" decoding=\"async\" fetchpriority=\"high\" alt=\"LEEYEE AC SPD for Type 1 lightning-current duty\"><\/div>\r\n              <div class=\"hero-product\"><img src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/ac-t12.webp\" width=\"1024\" height=\"1024\" loading=\"eager\" decoding=\"async\" alt=\"LEEYEE Type 1 plus 2 AC surge protective device\"><\/div>\r\n              <div class=\"hero-product\"><img src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/AC-t2.webp\" width=\"1024\" height=\"1024\" loading=\"eager\" decoding=\"async\" alt=\"LEEYEE Type 2 AC surge protective device\"><\/div>\r\n            <\/div>\r\n            <div class=\"hero-visual-foot\"><span>Type 1 duty<\/span><span>Type 1+2<\/span><span>Type 2<\/span><\/div>\r\n          <\/aside>\r\n        <\/div>\r\n\r\n        <div class=\"quick-strip\">\r\n          <div><strong>Real product families first<\/strong><span>B25, LY1-12.5 and LY1-C40 appear immediately instead of hiding products below a long guide.<\/span><\/div>\r\n          <div><strong>Engineering selection support<\/strong><span>Type, Uc, poles, network and external backup protection are reviewed together.<\/span><\/div>\r\n          <div><strong>Model-specific documents<\/strong><span>Certificate and test-document scope is checked against the exact quoted configuration.<\/span><\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"section\" id=\"ac-ads-products\">\r\n      <div class=\"wrap\">\r\n        <div class=\"head\"><div class=\"eyebrow\">Choose a Real Range<\/div><h2>See what you can buy before reading the engineering details<\/h2><p>Three current AC SPD families cover different surge duties. Choose a representative family first; then confirm the exact voltage, protection path and model suffix.<\/p><\/div>\r\n        <div class=\"product-grid\">\r\n          <article class=\"product-card\">\r\n            <div class=\"product-media\"><span class=\"tag\">TYPE 1 DUTY<\/span><img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/ac-T1.webp\" width=\"1024\" height=\"1024\" loading=\"lazy\" decoding=\"async\" alt=\"LEEYEE LY1-B25 AC surge protective device range for Type 1 lightning-current duty\"><\/div>\r\n            <div class=\"product-body\"><h3>LY1-B25 Series<\/h3><p class=\"product-sub\">Combined Type 1+2 product \u00b7 Type 1 Iimp duty<\/p><p class=\"product-copy\">For incoming-side protection where the project requires Type 1 lightning-current performance. The B25 range is correctly classified Type 1+2 because it also states Type 2 surge-current performance.<\/p>\r\n              <ul class=\"specs\"><li><span>Uc<\/span><strong>150 \/ 275 \/ 320 \/ 385 \/ 440V AC<\/strong><\/li><li><span>Iimp<\/span><strong>25kA phase-path options \u00b7 10\/350\u03bcs<\/strong><\/li><li><span>In \/ Imax<\/span><strong>25kA \/ 100kA on shown phase modules<\/strong><\/li><li><span>Poles<\/span><strong>1P, 2P, 3P, 4P and +N arrangements<\/strong><\/li><li><span>Up<\/span><strong>Confirm by exact model and Uc version<\/strong><\/li><li><span>Documents<\/span><strong>Confirm model-specific scope before approval<\/strong><\/li><\/ul>\r\n              <div class=\"product-actions\"><button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"LY1-B25 Type 1 duty range\"><span class=\"w-btn-label\">Confirm B25 Range<\/span><\/button><a class=\"details\" href=\"https:\/\/www.cnspd.com\/shop\/type-1-surge-protective-device\/\" target=\"_blank\" rel=\"noopener noreferrer\">Details<\/a><\/div>\r\n            <\/div>\r\n          <\/article>\r\n          <article class=\"product-card\">\r\n            <div class=\"product-media\"><span class=\"tag\">TYPE 1+2<\/span><img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/ac-t12.webp\" width=\"1024\" height=\"1024\" loading=\"lazy\" decoding=\"async\" alt=\"LEEYEE LY1-12.5 Type 1 plus 2 AC surge protective device range\"><\/div>\r\n            <div class=\"product-body\"><h3>LY1-12.5 Series<\/h3><p class=\"product-sub\">Type 1+2 \u00b7 Class I+II AC SPD<\/p><p class=\"product-copy\">For main distribution projects that require one SPD family with both 10\/350\u03bcs lightning-current and 8\/20\u03bcs surge-current performance.<\/p>\r\n              <ul class=\"specs\"><li><span>Uc<\/span><strong>75\u2013440V AC, by model\/version<\/strong><\/li><li><span>Iimp<\/span><strong>10\u201312.5kA, by voltage\/version<\/strong><\/li><li><span>Imax<\/span><strong>50kA on the current range shown<\/strong><\/li><li><span>Poles<\/span><strong>1P to 3P+N configurations<\/strong><\/li><li><span>Up<\/span><strong>Confirm by exact model and Uc version<\/strong><\/li><li><span>Documents<\/span><strong>Confirm model-specific scope before approval<\/strong><\/li><\/ul>\r\n              <div class=\"product-actions\"><button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"LY1-12.5 Type 1 plus 2 range\"><span class=\"w-btn-label\">Confirm LY1-12.5<\/span><\/button><a class=\"details\" href=\"https:\/\/www.cnspd.com\/shop\/type-12-surge-protective-device\/\" target=\"_blank\" rel=\"noopener noreferrer\">Details<\/a><\/div>\r\n            <\/div>\r\n          <\/article>\r\n          <article class=\"product-card\">\r\n            <div class=\"product-media\"><span class=\"tag\">TYPE 2<\/span><img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/AC-t2.webp\" width=\"1024\" height=\"1024\" loading=\"lazy\" decoding=\"async\" alt=\"LEEYEE LY1-C40 Type 2 AC surge protective device range\"><\/div>\r\n            <div class=\"product-body\"><h3>LY1-C40 Series<\/h3><p class=\"product-sub\">Type 2 \u00b7 Pluggable AC SPD<\/p><p class=\"product-copy\">For sub-distribution boards, control panels and OEM assemblies where induced and switching surges are the main Type 2 duty.<\/p>\r\n              <ul class=\"specs\"><li><span>Uc<\/span><strong>75 \/ 150 \/ 275 \/ 320 \/ 385 \/ 440V AC<\/strong><\/li><li><span>In \/ Imax<\/span><strong>20kA \/ 40kA \u00b7 8\/20\u03bcs<\/strong><\/li><li><span>Poles<\/span><strong>1P, 2P, 3P, 1P+N, 3P+N, 4P<\/strong><\/li><li><span>Options<\/span><strong>Pluggable modules \u00b7 remote-contact versions<\/strong><\/li><li><span>Up<\/span><strong>Confirm by exact model and Uc version<\/strong><\/li><li><span>Documents<\/span><strong>Confirm model-specific scope before approval<\/strong><\/li><\/ul>\r\n              <div class=\"product-actions\"><button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"LY1-C40 Type 2 range\"><span class=\"w-btn-label\">Confirm LY1-C40<\/span><\/button><a class=\"details\" href=\"https:\/\/www.cnspd.com\/shop\/type-2-surge-protective-device\/\" target=\"_blank\" rel=\"noopener noreferrer\">Details<\/a><\/div>\r\n            <\/div>\r\n          <\/article>\r\n        <\/div>\r\n        <div class=\"model-note\"><strong>Document scope note:<\/strong> family-level values are a buying overview. Before project approval or bulk order, confirm the exact model, Uc, protection mode, Up, pole configuration, suffix, external backup protection and available CE \/ T\u00dcV \/ CB \/ RoHS \/ IEC-related documents.<\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"section soft\" id=\"ac-ads-selector\">\r\n      <div class=\"wrap desk\">\r\n        <div class=\"desk-intro\"><div class=\"eyebrow\" style=\"color:#95d0ff\"><span><\/span>3-step selection<\/div><h2>Confirm Type, Network and Voltage in 3 Steps.<\/h2><p>Start with the installation point, then confirm the AC network and protected voltage path. These three checks narrow the correct SPD duty, pole arrangement, Uc and Up before quotation.<\/p><ul><li>Installation point defines the likely SPD duty.<\/li><li>Network and conductors define the protection paths.<\/li><li>Actual voltage path helps determine Uc and Up.<\/li><\/ul><button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"AC SPD selection desk\" style=\"margin-top:18px;background:#fff;color:#071b34\"><span class=\"w-btn-label\">Send Panel Details<\/span><\/button><\/div>\r\n        <div>\r\n          <div class=\"question-stack\">\r\n            <article class=\"qcard\"><div class=\"qtop\"><span class=\"qnum\">01<\/span><div><h3>Where will the SPD be installed?<\/h3><p>Use the installation stage to choose the first product path.<\/p><\/div><\/div><div class=\"options\" data-question=\"stage\"><button type=\"button\" class=\"option\" data-value=\"Incoming \/ main distribution\">Incoming \/ main distribution<\/button><button type=\"button\" class=\"option\" data-value=\"Sub-distribution \/ panel\">Sub-distribution \/ panel<\/button><button type=\"button\" class=\"option\" data-value=\"Not sure\">Not sure<\/button><\/div><\/article>\r\n            <article class=\"qcard\"><div class=\"qtop\"><span class=\"qnum\">02<\/span><div><h3>Which AC network is at the installation point?<\/h3><p>Pole count should follow the real conductor and earthing arrangement.<\/p><\/div><\/div><div class=\"options\" data-question=\"network\"><button type=\"button\" class=\"option\" data-value=\"Single-phase TT \/ TN-S\">Single-phase TT \/ TN-S<\/button><button type=\"button\" class=\"option\" data-value=\"Three-phase TN-C\">Three-phase TN-C<\/button><button type=\"button\" class=\"option\" data-value=\"Three-phase TN-S \/ TT\">Three-phase TN-S \/ TT<\/button><button type=\"button\" class=\"option\" data-value=\"Not sure\">Not sure<\/button><\/div><\/article>\r\n            <article class=\"qcard\"><div class=\"qtop\"><span class=\"qnum\">03<\/span><div><h3>What voltage path are you protecting?<\/h3><p>Nominal system voltage alone does not automatically determine Uc.<\/p><\/div><\/div><div class=\"options\" data-question=\"voltage\"><button type=\"button\" class=\"option\" data-value=\"230V-class L-N\">230V-class L-N<\/button><button type=\"button\" class=\"option\" data-value=\"400V three-phase system\">400V three-phase system<\/button><button type=\"button\" class=\"option\" data-value=\"Other \/ project-specific\">Other \/ project-specific<\/button><button type=\"button\" class=\"option\" data-value=\"Not sure\">Not sure<\/button><\/div><\/article>\r\n          <\/div>\r\n          <div class=\"desk-result\" id=\"ly-ac-selection-result\"><strong>Selection summary:<\/strong> choose the answers you know. They will be added automatically when you open the inquiry form.<\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"section\" id=\"ac-ads-engineering\">\r\n      <div class=\"wrap\">\r\n        <div class=\"head\"><div class=\"eyebrow\">System &amp; Uc<\/div><h2>Two checks that prevent many wrong AC SPD orders<\/h2><p>Keep the engineering layer short: confirm network\/poles, then confirm the continuous voltage across the actual protected path.<\/p><\/div>\r\n        <div class=\"split\">\r\n          <article class=\"panel\"><h3>Network \u2192 pole arrangement<\/h3><p>3P, 4P and 3P+N are not interchangeable labels. Confirm neutral and PE treatment before model approval.<\/p><div class=\"mini-table\"><div class=\"mini-row\"><strong>Single-phase<\/strong><span>1P, 1P+N or verified 2-pole arrangement depending on the protection path.<\/span><\/div><div class=\"mini-row\"><strong>TN-C<\/strong><span>3P is a common starting arrangement where no separate neutral is protected at that point.<\/span><\/div><div class=\"mini-row\"><strong>TN-S<\/strong><span>4P or 3P+N may be considered depending on 4+0 versus 3+1 protection mode.<\/span><\/div><div class=\"mini-row\"><strong>TT<\/strong><span>Verify the N-PE path and the selected product wiring\/protection concept before ordering.<\/span><\/div><\/div><\/article>\r\n          <article class=\"panel\"><h3>Uc \u2192 actual protected voltage path<\/h3><p>Use common AC Uc values only as starting points. Final selection should consider normal tolerance, TOV conditions and the required Up.<\/p><div class=\"uc-grid\"><div class=\"uc\"><b>275V<\/b><span>Common 230V L-N starting point<\/span><\/div><div class=\"uc\"><b>320V<\/b><span>Additional operating margin<\/span><\/div><div class=\"uc\"><b>385V<\/b><span>Wider voltage tolerance<\/span><\/div><div class=\"uc\"><b>440V<\/b><span>Use only when the path requires it<\/span><\/div><\/div><div class=\"model-note\" style=\"margin-top:12px\">A higher Uc is not automatically \u201cbetter.\u201d Confirm the resulting protection level and the actual voltage path before approval.<\/div><\/article>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"section soft\" id=\"ac-ads-proof\">\r\n      <div class=\"wrap\">\r\n        <div class=\"head\"><div class=\"eyebrow\">Testing &amp; Documentation<\/div><h2>Use evidence to reduce procurement risk<\/h2><p>Testing capability supports product and batch verification. Final project approval still depends on the exact model and document scope.<\/p><\/div>\r\n        <div class=\"proof-grid\">\r\n          <article class=\"proof\"><img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/MOV-and-GDT-tester-.webp\" width=\"1024\" height=\"768\" loading=\"lazy\" decoding=\"async\" alt=\"MOV and GDT component tester used in LEEYEE SPD verification\"><div class=\"proof-body\"><h3>MOV &amp; GDT checks<\/h3><p>Component verification supports review of electrical behaviour and batch consistency before finished SPD assembly.<\/p><\/div><\/article>\r\n          <article class=\"proof\"><img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/lightning-impulse-generator.webp\" width=\"1024\" height=\"768\" loading=\"lazy\" decoding=\"async\" alt=\"Lightning impulse generator used for LEEYEE surge protective device verification\"><div class=\"proof-body\"><h3>Impulse-current verification<\/h3><p>Check the declared waveform and current parameter relevant to the selected SPD duty and protection path.<\/p><\/div><\/article>\r\n          <article class=\"proof\"><img loading=\"lazy\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/Thermal-Stability-Test.webp\" width=\"1024\" height=\"768\" loading=\"lazy\" decoding=\"async\" alt=\"Thermal stability test used for LEEYEE surge protective devices\"><div class=\"proof-body\"><h3>Thermal behaviour checks<\/h3><p>Thermal behaviour and disconnection matter when MOVs age or experience sustained abnormal overvoltage.<\/p><\/div><\/article>\r\n        <\/div>\r\n        <div class=\"doc-callout\"><div><h3>Do not approve a certificate from the logo alone<\/h3><p>Certification and test-document availability depends on the exact model, voltage, SPD Type, pole arrangement, suffix, manufacturer and branding configuration. Submit the proposed model for document confirmation.<\/p><\/div><a class=\"btn btn-outline\" href=\"https:\/\/www.cnspd.com\/patents-certificates\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span class=\"w-btn-label\">Review Document Center<\/span><\/a><\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"oem\" id=\"ac-ads-oem\"><div class=\"wrap oem-grid\"><div><h2>For distributors, panel builders and OEM brands<\/h2><p>Confirm the electrical base model first, then align logo, label, packaging, remote-contact option and applicable documentation.<\/p><div class=\"oem-points\"><span>Model confirmation<\/span><span>Logo &amp; label<\/span><span>Packaging artwork<\/span><span>Remote-contact option<\/span><span>Batch supply<\/span><span>Document matching<\/span><\/div><\/div><button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"AC SPD OEM or distribution requirement\"><span class=\"w-btn-label\">Send AC SPD Requirement<\/span><\/button><\/div><\/section>\r\n\r\n    <section class=\"section\" id=\"ac-ads-faq\"><div class=\"wrap\"><div class=\"head\"><div class=\"eyebrow\">FAQ<\/div><h2>Questions buyers should settle before quotation<\/h2><p>Short answers only\u2014the page remains a transaction path rather than becoming another long technical article.<\/p><\/div><div class=\"faq-list\">\r\n      <details><summary>What is an AC SPD?<\/summary><div class=\"faq-answer\"><p>An AC SPD is a surge protective device for low-voltage AC power circuits. Selection depends on SPD Type, Uc, poles, network, installation point, surge-current duty and voltage protection level Up.<\/p><\/div><\/details>\r\n      <details><summary>Should I choose Type 1, Type 1+2 or Type 2?<\/summary><div class=\"faq-answer\"><p>Use the installation duty first. Incoming points exposed to partial lightning current may require Type 1 duty or Type 1+2. Type 2 is commonly used in distribution boards and panels where induced and switching surges are the main duty.<\/p><\/div><\/details>\r\n      <details><summary>Why does the B25 range appear under Type 1 duty?<\/summary><div class=\"faq-answer\"><p>The current B25 products are combined Type 1+2 devices. They provide the 10\/350\u03bcs Iimp performance needed for Type 1 lightning-current duty while also stating Type 2 In\/Imax performance.<\/p><\/div><\/details>\r\n      <details><summary>How do I choose 1P, 2P, 3P, 3P+N or 4P?<\/summary><div class=\"faq-answer\"><p>Start from the actual conductors and earthing arrangement. TT, TN-S, TN-C and TN-C-S can require different protection paths, so confirm neutral and PE arrangement before choosing poles.<\/p><\/div><\/details>\r\n      <details><summary>How do I choose 275V, 320V, 385V or 440V Uc?<\/summary><div class=\"faq-answer\"><p>Confirm the actual continuous voltage across the protected path, normal tolerance, temporary overvoltage conditions and the required Up. Nominal system voltage alone is not enough.<\/p><\/div><\/details>\r\n      <details><summary>What should I send for model confirmation?<\/summary><div class=\"faq-answer\"><p>Send system voltage, single- or three-phase network, TT\/TN arrangement, installation point, required SPD Type, pole preference if known, upstream fuse\/MCB, estimated quantity and any document or OEM requirements.<\/p><\/div><\/details>\r\n    <\/div><\/div><\/section>\r\n\r\n    <section class=\"section conversion\" id=\"ac-ads-inquiry\"><div class=\"wrap\"><div class=\"form-wrap\"><aside class=\"form-intro\"><div class=\"eyebrow\">Send Your Requirement<\/div><h2>Get the AC SPD model narrowed before quotation.<\/h2><p>Required fields stay short. Company, country, system and quantity are optional on the first inquiry, while the page still passes available Google Ads source data for attribution.<\/p><ul><li>Voltage and installation point<\/li><li>Network \/ poles if known<\/li><li>Quantity, documents or OEM requirements<\/li><\/ul><\/aside><div class=\"form-card\"><h3>AC SPD Requirement<\/h3><p class=\"form-card-sub\">Name, business email and requirement are required. Add the technical details you already know.<\/p><form id=\"lyAcAdsForm\" novalidate><div class=\"form-grid\">\r\n      <div class=\"field\"><label for=\"lyac-name\">Name *<\/label><input id=\"lyac-name\" name=\"name\" type=\"text\" autocomplete=\"name\" required><\/div>\r\n      <div class=\"field\"><label for=\"lyac-email\">Business Email *<\/label><input id=\"lyac-email\" name=\"email\" type=\"email\" autocomplete=\"email\" required><\/div>\r\n      <div class=\"field\"><label for=\"lyac-company\">Company <span>(optional)<\/span><\/label><input id=\"lyac-company\" name=\"company\" type=\"text\" autocomplete=\"organization\"><\/div>\r\n      <div class=\"field\"><label for=\"lyac-country\">Country <span>(optional)<\/span><\/label><input id=\"lyac-country\" name=\"country\" type=\"text\" autocomplete=\"country-name\"><\/div>\r\n      <div class=\"field\"><label for=\"lyac-system\">System \/ Poles <span>(optional)<\/span><\/label><input id=\"lyac-system\" name=\"system\" type=\"text\" placeholder=\"e.g. 230\/400V TN-S, 3P+N\"><\/div>\r\n      <div class=\"field\"><label for=\"lyac-qty\">Estimated Quantity <span>(optional)<\/span><\/label><select id=\"lyac-qty\" name=\"quantity\"><option value=\"\">Select range<\/option><option>Sample \/ evaluation<\/option><option>Below 50 pcs<\/option><option>50\u2013200 pcs<\/option><option>200\u20131,000 pcs<\/option><option>Above 1,000 pcs<\/option><option>Project BOM<\/option><\/select><\/div>\r\n      <div class=\"field full\"><label for=\"lyac-message\">Requirement \/ Application *<\/label><textarea id=\"lyac-message\" name=\"message\" required placeholder=\"Example: Type 2 SPD for 400V TN-S panel, 3P+N, remote contact required, 200 pcs. Please confirm model and available documents.\"><\/textarea><\/div>\r\n    <\/div><input type=\"hidden\" name=\"selected_context\" value=\"AC SPD model selection\"><input type=\"hidden\" name=\"selection_summary\" value=\"\"><div class=\"form-submit\"><button type=\"submit\" class=\"btn btn-primary\"><span class=\"w-btn-label\">Send AC SPD Requirement<\/span><\/button><\/div><p class=\"form-note\">Current URL, referrer, UTM parameters and available Google click IDs are passed to the site quotation form when available.<\/p><div class=\"status\" id=\"lyAcAdsStatus\" role=\"status\" aria-live=\"polite\"><\/div><\/form><\/div><\/div><\/div><\/section>\r\n  <\/main>\r\n\r\n  <footer class=\"ads-footer\" id=\"ly-ac-ads-footer\"><div class=\"ads-footer-inner\"><strong>LEEYEE<\/strong><span>\u00b7 AC, DC\/PV &amp; Signal Surge Protection<\/span><span>\u00b7 Built to Protect. Trusted to Last.<\/span><a href=\"https:\/\/www.cnspd.com\/patents-certificates\/\" target=\"_blank\" rel=\"noopener noreferrer\">Certificate Scope Notice<\/a><\/div><\/footer>\r\n  <div id=\"ly-ac-cf7-transport\" aria-hidden=\"true\"><\/div>\r\n  <div id=\"ly-ac-mobile-cta\" class=\"hide\"><button type=\"button\" class=\"btn btn-primary leeyee-site-popup-btn\" data-context=\"AC SPD model selection\"><span class=\"w-btn-label\">Confirm AC System &amp; SPD<\/span><\/button><\/div>\r\n\r\n<div id=\"ly-ac-ads-popup\" role=\"dialog\" aria-modal=\"true\" aria-labelledby=\"lyAcPopupTitle\" aria-hidden=\"true\">\r\n  <div class=\"dialog\" tabindex=\"-1\"><button type=\"button\" class=\"close\" aria-label=\"Close quotation form\">\u00d7<\/button><div class=\"popup-head\"><h2 id=\"lyAcPopupTitle\">Confirm AC SPD Model<\/h2><p>Send the information you already know. Technical details can remain short on the first inquiry.<\/p><div class=\"context\" id=\"lyAcPopupContext\">AC SPD model selection<\/div><\/div><div class=\"popup-body\"><form id=\"lyAcPopupForm\" novalidate><div class=\"form-grid\">\r\n    <div class=\"field\"><label for=\"lyacp-name\">Name *<\/label><input id=\"lyacp-name\" name=\"name\" type=\"text\" autocomplete=\"name\" required><\/div>\r\n    <div class=\"field\"><label for=\"lyacp-email\">Business Email *<\/label><input id=\"lyacp-email\" name=\"email\" type=\"email\" autocomplete=\"email\" required><\/div>\r\n    <div class=\"field\"><label for=\"lyacp-company\">Company <span>(optional)<\/span><\/label><input id=\"lyacp-company\" name=\"company\" type=\"text\" autocomplete=\"organization\"><\/div>\r\n    <div class=\"field\"><label for=\"lyacp-country\">Country <span>(optional)<\/span><\/label><input id=\"lyacp-country\" name=\"country\" type=\"text\" autocomplete=\"country-name\"><\/div>\r\n    <div class=\"field full\"><label for=\"lyacp-message\">Requirement \/ Application *<\/label><textarea id=\"lyacp-message\" name=\"message\" required placeholder=\"Voltage, SPD Type, poles, quantity, project or document requirement.\"><\/textarea><\/div>\r\n  <\/div><input type=\"hidden\" name=\"selected_context\" value=\"AC SPD model selection\"><input type=\"hidden\" name=\"selection_summary\" value=\"\"><div class=\"form-submit\"><button type=\"submit\" class=\"btn btn-primary\"><span class=\"w-btn-label\">Send Requirement<\/span><\/button><\/div><div class=\"status\" id=\"lyAcPopupStatus\" role=\"status\" aria-live=\"polite\"><\/div><\/form><\/div><\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is an AC SPD?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An AC SPD is a surge protective device for low-voltage AC power circuits. Selection depends on SPD Type, Uc, poles, network, installation point, surge-current duty and voltage protection level Up.\"}},{\"@type\":\"Question\",\"name\":\"Should I choose Type 1, Type 1+2 or Type 2?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Incoming points exposed to partial lightning current may require Type 1 duty or Type 1+2. Type 2 is commonly used in distribution boards and panels where induced and switching surges are the main duty.\"}},{\"@type\":\"Question\",\"name\":\"How do I choose 1P, 2P, 3P, 3P+N or 4P?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Start from the actual conductors and earthing arrangement. 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