{"id":1608,"date":"2025-09-17T08:52:40","date_gmt":"2025-09-17T08:52:40","guid":{"rendered":"https:\/\/cnkuangya.com\/?page_id=1608"},"modified":"2026-01-20T08:41:15","modified_gmt":"2026-01-20T08:41:15","slug":"afdd","status":"publish","type":"page","link":"https:\/\/cnkuangya.com\/ar\/afdd\/","title":{"rendered":"AFDDD"},"content":{"rendered":"\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-b712e47\" data-block-id=\"b712e47\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b712e47-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-3fbfc08\" data-v=\"4\" data-block-id=\"3fbfc08\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-3fbfc08-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-3fbfc08-inner-blocks\">\n<!-- ===== SEC1 \u2014 Hero (AFDD Landing Page | Kuangya) ===== -->\n<section id=\"sec-hero\" class=\"ky-hero\">\n  <style>\n    :root{--brand:#B5220E;--accent:#B5220E;--text:#ffffff;--muted:#d1d5db;--bg:#0b0b0b;--line:#E5E7EB}\n    .ky-hero{position:relative;background:var(--bg);color:#fff}\n    .ky-hero::before{content:\"\";position:absolute;inset:0;background:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/banner6.webp') center\/cover no-repeat;filter:brightness(0.55)}\n    .ky-hero::after{content:\"\";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.35),rgba(0,0,0,.55))}\n    .ky-hero .inner{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:72px 16px;display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:center;min-height:520px}\n    .ky-hero .copy h1{font-size:44px;line-height:1.15;margin:0 0 12px;color:#fff}\n    .ky-hero .copy h1 .hl{color:var(--brand)}\n    .ky-hero .copy p{margin:0 0 14px;color:#e5e7eb;font-size:18px}\n    .ky-hero .bullets{display:flex;gap:14px;flex-wrap:wrap;margin:14px 0 18px}\n    .ky-hero .chip{border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:6px 12px;font-size:13px;color:#f3f4f6}\n    .ky-hero .ctas{display:flex;gap:12px;flex-wrap:wrap}\n    .ky-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:600;cursor:pointer;text-decoration:none}\n    .ky-btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}\n    .ky-btn.primary:hover{background:#991b1b;border-color:#991b1b}\n    .ky-btn.ghost{background:transparent;color:#fff;border-color:#fff}\n    .ky-btn.ghost:hover{background:rgba(255,255,255,.08)}\n    .ky-hero .panel{position:relative;background:rgba(255,255,255,.06);border:2px solid var(--brand);backdrop-filter:blur(2px);border-radius:16px;padding:18px}\n    .ky-hero .panel h3{margin:0 0 8px;font-size:18px;color:var(--brand)}\n    .ky-hero .panel ul{margin:0;padding-left:18px;color:#e5e7eb}\n    .ky-hero .panel li{margin:6px 0}\n    .ky-hero .panel li strong{color:var(--brand)}\n\n    @media (max-width: 960px){\n      .ky-hero .inner{grid-template-columns:1fr;min-height:unset;padding:56px 16px}\n      .ky-hero .copy h1{font-size:36px}\n    }\n  <\/style>\n\n  <div class=\"inner\">\n    <!-- Left: Copy -->\n    <div class=\"copy\">\n      <h1>\n        Select Your <span class=\"hl\">AFDD<\/span>\n        <br \/>Arc Fault Detection Device\n      <\/h1>\n      <p>\n        Detects <strong>series<\/strong> and <strong>parallel<\/strong> arc faults with high-frequency signature analysis, engineered to coordinate with\n        <a href=\"\/mcb\/\" style=\"color:#fff;text-decoration:underline\">MCB<\/a>, <a href=\"\/rccb\/\" style=\"color:#fff;text-decoration:underline\">RCCB<\/a> and\n        <a href=\"\/rcbo\/\" style=\"color:#fff;text-decoration:underline\">RCBO<\/a> for comprehensive protection.\n      <\/p>\n      <div class=\"bullets\">\n        <span class=\"chip\">230\/400 V \u2022 B\/C\/D curves<\/span>\n        <span class=\"chip\">6\u201340 A ratings<\/span>\n        <span class=\"chip\">Nuisance-trip filtering<\/span>\n        <span class=\"chip\">Test button &#038; LED status<\/span>\n      <\/div>\n      <div class=\"ctas\">\n        <a class=\"ky-btn primary\" href=\"#sec-selector\" aria-label=\"See AFDD models\">See Models<\/a>\n        <a class=\"ky-btn ghost\" href=\"\/contact-us\" data-popup=\"afdd-quote\" aria-label=\"Get a quotation\">Get Quote<\/a>\n      <\/div>\n    <\/div>\n\n    <!-- Right: Highlight panel -->\n    <aside class=\"panel\" role=\"complementary\">\n      <h3>AFDD Portfolio<\/h3>\n      <ul>\n        <li><strong>AFDD-1 (1P+N)<\/strong> \u2014 single-phase 230 V circuits, bedrooms\/wood structures, sockets &#038; lighting.<\/li>\n        <li><strong>AFDD-3 (3P \/ 3P+N)<\/strong> \u2014 three-phase 400 V circuits, critical rooms, IT racks, dorms and hotels.<\/li>\n        <li>Combine with <a href=\"\/ac-spd\/\" style=\"color:#fff;text-decoration:underline\">Type 2 AC SPD<\/a> at distribution level for layered surge + arc protection.<\/li>\n      <\/ul>\n    <\/aside>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-d7f1537\" data-block-id=\"d7f1537\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-d7f1537-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-f9bbcf5\" data-v=\"4\" data-block-id=\"f9bbcf5\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f9bbcf5-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-f9bbcf5-inner-blocks\">\n<!-- ===== SEC2 \u2014 Model Selector (AFDD Landing Page | Kuangya) ===== -->\n<section id=\"sec-selector\" class=\"ky-selector\">\n  <style>\n    .ky-selector{padding:72px 16px;background:#f9fafb;color:#111827}\n    .ky-selector .head{max-width:1100px;margin:0 auto 32px;text-align:center}\n    .ky-selector .head h2{font-size:32px;margin:0 0 12px;color:var(--brand)}\n    .ky-selector .head p{color:#4b5563;margin:0;font-size:18px}\n\n    .ky-selector .grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}\n    .ky-card{background:#fff;border:1px solid #e5e7eb;border-radius:16px;box-shadow:0 2px 4px rgba(0,0,0,.06);padding:20px;display:flex;flex-direction:column;justify-content:space-between}\n    .ky-card img{width:100%;aspect-ratio:1\/1;object-fit:contain;border-radius:12px;margin-bottom:16px}\n    .ky-card h3{font-size:20px;margin:0 0 8px;color:#111827}\n    .ky-card .meta{font-size:14px;color:#6b7280;margin-bottom:12px}\n    .ky-card .cta{margin-top:auto}\n    .ky-card .btn{display:inline-block;padding:10px 16px;border-radius:999px;font-size:14px;font-weight:600;text-decoration:none;border:1px solid var(--brand);color:#fff;background:var(--brand)}\n    .ky-card .btn:hover{background:#991b1b;border-color:#991b1b}\n  <\/style>\n\n  <div class=\"head\">\n    <h2>Select AFDD Models<\/h2>\n    <p>Compare available models below and click a card for full specifications &#038; wiring diagrams.<\/p>\n  <\/div>\n\n  <div class=\"grid\">\n    <!-- AFDD-1 -->\n    <div class=\"ky-card\">\n      <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/01\/cnkuangya-afdd-1-feature-image.webp\" alt=\"AFDD-1 Arc Fault Detection Device Kuangya\">\n      <h3>AFDD-1 (1P+N)<\/h3>\n      <div class=\"meta\">Single-phase 230 V \u2022 6-40 A \u2022 B\/C\/D Curves<\/div>\n      <div class=\"cta\">\n        <a href=\"\/product\/afdd-1\/\" class=\"btn\">Specs &#038; Wiring<\/a>\n      <\/div>\n    <\/div>\n\n    <!-- AFDD-3 -->\n    <div class=\"ky-card\">\n      <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/01\/cnkuangya-afdd-3-feature-image.webp\" alt=\"AFDD-3 Arc Fault Detection Device Kuangya\">\n      <h3>AFDD-3 (3P \/ 3P+N)<\/h3>\n      <div class=\"meta\">Three-phase 400 V \u2022 6-40 A \u2022 B\/C\/D Curves<\/div>\n      <div class=\"cta\">\n        <a href=\"\/product\/afdd-3\/\" class=\"btn\">Specs &#038; Wiring<\/a>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-a682880\" data-block-id=\"a682880\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-a682880-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6062aa4\" data-v=\"4\" data-block-id=\"6062aa4\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6062aa4-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6062aa4-inner-blocks\">\n<!-- ================= AFDD Landing \u2014 SEC3 to SEC7 (Kuangya) ================= -->\n<section id=\"afdd-sections\" class=\"afdd-wrap\" aria-label=\"AFDD Sections\">\n  <style>\n    \/* ===== Design tokens (scoped) ===== *\/\n    .afdd-wrap{\n      --brand:#B5220E; --ink:#0F172A; --muted:#6B7280; --line:#E5E7EB;\n      --bg:#F7F7F8; --card:#FFFFFF; --head:#F3F4F6; --ring:rgba(181,34,14,.14);\n      --shadow:0 10px 30px rgba(2,6,23,.06);\n    }\n    .afdd-wrap *{box-sizing:border-box}\n    .afdd-wrap .container{max-width:1160px;margin:0 auto;padding:0 20px}\n    .afdd-wrap .sec{padding:64px 0}\n    .afdd-wrap .title{font:700 30px\/1.2 ui-sans-serif,system-ui,Segoe UI,Roboto,Arial;color:var(--ink);text-align:center;margin:0 0 12px}\n    .afdd-wrap .lead{color:var(--muted);text-align:center;max-width:940px;margin:0 auto 26px}\n    .afdd-wrap .text{color:#1F2937;font:400 16px\/1.75 ui-sans-serif,system-ui,Segoe UI,Roboto,Arial}\n    .afdd-wrap .card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}\n    .afdd-wrap .divider{height:1px;background:linear-gradient(90deg,transparent,#E5E7EB,transparent);margin:28px 0}\n    .afdd-wrap .gap{height:56px}\n    @media (max-width:880px){ .afdd-wrap .sec{padding:46px 0} .afdd-wrap .gap{height:36px} }\n\n    \/* ===== Grid \/ Cards ===== *\/\n    .afdd-wrap .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}\n    .afdd-wrap .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}\n    @media (max-width:1000px){ .afdd-wrap .grid-4{grid-template-columns:repeat(2,1fr)} }\n    @media (max-width:680px){ .afdd-wrap .grid-3{grid-template-columns:1fr} .afdd-wrap .grid-4{grid-template-columns:1fr} }\n\n    .afdd-wrap .feature{padding:16px}\n    .afdd-wrap .feature h4{margin:0 0 6px;font:700 16px\/1.4 ui-sans-serif,system-ui}\n    .afdd-wrap .feature p{margin:0;color:#374151}\n\n    \/* ===== Tables ===== *\/\n    .afdd-wrap .table-wrap{overflow:auto;border-radius:16px}\n    .afdd-wrap table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden}\n    .afdd-wrap thead th{position:sticky;top:0;background:var(--head);text-align:left;font-weight:700;color:#111827}\n    .afdd-wrap th,.afdd-wrap td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}\n    .afdd-wrap tbody tr:nth-child(2n){background:#FAFAFB}\n    .afdd-wrap tbody tr:hover{background:#F6F7F8}\n\n    \/* ===== Callouts ===== *\/\n    .afdd-wrap .callout{display:flex;gap:10px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow)}\n    .afdd-wrap .tag{font-weight:700;color:#fff;background:var(--brand);border-radius:8px;padding:4px 8px;white-space:nowrap}\n\n    \/* ===== Links inside text ===== *\/\n    .afdd-wrap a.inline{color:var(--brand);font-weight:600;text-decoration:none}\n    .afdd-wrap a.inline:hover{text-decoration:underline}\n\n    \/* ===== Image slot (for future) ===== *\/\n    .afdd-wrap .img-slot{border:1px dashed #D1D5DB;border-radius:14px;padding:16px;text-align:center;color:#9CA3AF}\n  <\/style>\n\n  <!-- ================= SEC3 \u2014 Overview & Safety Rationale ================= -->\n  <section id=\"sec3-overview\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Overview \u2014 What is an AFDD?<\/h2>\n      <p class=\"lead\"><strong>AFDD (Arc Fault Detection Device)<\/strong> detects dangerous arcing signatures and disconnects the circuit to reduce electrical fire risk.<\/p>\n\n      <div class=\"text card\" style=\"padding:18px\">\n        <p>\n          An <strong>arc fault detection device<\/strong> continuously analyzes current\/voltage waveforms to identify patterns typical of \n          <em>series arc fault<\/em> (loose connections, damaged conductors in series with the load) and <em>parallel arc fault<\/em> \n          (unintended arcing between conductors). When the algorithm recognizes a hazardous signature, the AFDD trips the circuit before heat can ignite \n          nearby combustible materials. This functionality is distinct from residual-current and overcurrent protection.\n        <\/p>\n        <p>\n          Compared with other protective devices: an <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> reacts to earth leakage; an \n          <a class=\"inline\" href=\"\/MCB\">MCB<\/a> (or <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a>) reacts to overload and short-circuit. \n          AFDD specifically targets arcing events that may not produce sufficient leakage or overcurrent to trigger those devices. \n          In many jurisdictions, AFDDs are advised or required in high fire-risk areas (consult local codes). The detection logic is aligned with the \n          intent of <strong>IEC 62606<\/strong> (series-dependent compliance).\n        <\/p>\n        <p>\n          You can deploy AFDDs as dedicated modules upstream of final circuits or select integrated AFDD+RCBO variants where available. \n          In both cases, AFDDs complement the protection stack: <strong>AFDD + RCBO<\/strong> (or <strong>AFDD + MCB + RCCB<\/strong>) creates a layered defense \n          against arc fault, leakage, overload, and short-circuit. The result is improved fire safety without compromising selectivity.\n        <\/p>\n\n  <\/section>\n\n  <div class=\"divider\"><\/div>\n\n  <!-- ================= SEC4 \u2014 Key Features & Benefits ================= -->\n  <section id=\"sec4-features\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Key Features &amp; Benefits<\/h2>\n      <p class=\"lead\">Engineered arc recognition, coordinated with residual and overcurrent protection for comprehensive safety.<\/p>\n\n      <div class=\"grid-4\">\n        <div class=\"feature card\">\n          <h4>Series &amp; Parallel Arc Recognition<\/h4>\n          <p>Monitors patterns associated with frayed conductors, loose terminals, and damaged insulation; intervenes before ignition.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>Integrated or Modular<\/h4>\n          <p>Available as stand-alone AFDDs or as AFDD+RCBO combinations to save space and simplify wiring on final circuits.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>Algorithm &amp; Immunity<\/h4>\n          <p>Detection algorithm aims to distinguish hazardous arcs from benign switching noise, improving immunity to nuisance tripping.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>IEC 62606 Alignment<\/h4>\n          <p>Designed with the intent of <strong>IEC 62606<\/strong>; series-dependent approvals (CE\/CB\/UKCA\/RoHS) available by family.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>Coordination with RCBO\/MCB<\/h4>\n          <p>Works alongside <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/MCB\">MCB<\/a> + <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> to complete the protection stack.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>DIN-rail Modular<\/h4>\n          <p>Compact modules for 35 mm EN 60715 rails; suitable for new builds and retrofit distribution boards.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>Status &amp; Test Functions<\/h4>\n          <p>Front indicators and test buttons support routine checks; recommended monthly testing as per local regulations.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>Application-focused<\/h4>\n          <p>Particularly valuable in bedrooms, accommodations, aging wiring, combustible storage areas, IT rooms, and critical environments.<\/p>\n        <\/div>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n      <div class=\"callout\">\n        <span class=\"tag\">Tip<\/span>\n        <div class=\"text\">\n          If loads include power electronics (drivers, UPS, VFDs), verify AFDD compatibility and, when needed, pair with the correct residual-current type (A\/F\/B) via \n          <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a>.\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <div class=\"divider\"><\/div>\n\n  <!-- ================= SEC5 \u2014 Applications & Use Cases ================= -->\n  <section id=\"sec5-apps\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Applications &amp; Use Cases<\/h2>\n      <p class=\"lead\">Target locations where arc ignition risk is elevated or consequences of fire are severe.<\/p>\n\n      <div class=\"grid-3\">\n        <div class=\"feature card\">\n          <h4>AFDD for bedrooms &amp; accommodations<\/h4>\n          <p>Mitigates risk from portable heaters, aging plugs, and flex leads; improves safety in hotels, dormitories, and apartments.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>AFDD for aging wiring<\/h4>\n          <p>Legacy installations with brittle insulation or corroded terminals benefit from arc-fault monitoring beyond leakage-only detection.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>AFDD for combustible storage<\/h4>\n          <p>Where materials are easily ignitable (timber, packaging, textiles), early arc detection reduces fire initiation likelihood.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>AFDD for IT rooms &amp; data centers<\/h4>\n          <p>High equipment density and continuous loads demand enhanced protection without widespread nuisance trips.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>AFDD for hospitals &amp; public buildings<\/h4>\n          <p>Supports risk-managed selectivity strategy; use with <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> to localize trips to the affected circuit.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>AFDD with EV \/ PV adjacencies<\/h4>\n          <p>For EV charging bays and PV AC interfaces, integrate AFDD with the correct residual-current device and surge protection (<a class=\"inline\" href=\"\/AC-SPD\">AC SPD<\/a>).<\/p>\n        <\/div>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n      \n  <\/section>\n\n  <div class=\"divider\"><\/div>\n\n  <!-- ================= SEC6 \u2014 Selection Guide ================= -->\n  <section id=\"sec6-selection\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Selection Guide<\/h2>\n      <p class=\"lead\">Pick pole configuration, integration method, and compatibility for the target load environment.<\/p>\n\n      <div class=\"text card\" style=\"padding:18px\">\n        <ol style=\"margin:0; padding-left:18px\">\n          <li><strong>Poles &amp; system:<\/strong> For single-phase circuits, select <strong>AFDD 1P+N<\/strong>; use <strong>AFDD 2P<\/strong> where simultaneous disconnection is required. For three-phase distribution, deploy AFDDs on each phase path or use an AFDD solution combined with <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a>\/<a class=\"inline\" href=\"\/MCB\">MCB<\/a> as applicable.<\/li>\n          <li><strong>Integration:<\/strong> Choose <strong>AFDD + RCBO<\/strong> combinations to cover arc faults, leakage, and overcurrent in one line-up; or use AFDD with <a class=\"inline\" href=\"\/MCB\">MCB<\/a> + <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> where series compatibility or retrofit constraints dictate.<\/li>\n          <li><strong>Compatibility:<\/strong> If loads include power electronics (LED drivers, VFDs, UPS), confirm AFDD immunity and pair with appropriate residual-current type (AC\/A\/F\/B) via RCBO or RCCB as required.<\/li>\n          <li><strong>Selectivity:<\/strong> Coordinate AFDD trip characteristics with downstream devices to ensure only the faulted branch trips; avoid shared neutrals that could confuse detection.<\/li>\n          <li><strong>Environment:<\/strong> In high fire-risk or mission-critical areas (bedrooms, combustible storage, hospitals, IT rooms), prioritize AFDD deployment per risk assessment and local codes.<\/li>\n        <\/ol>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n\n      <div class=\"table-wrap card\">\n        <table aria-label=\"AFDD selection matrix\">\n          <thead>\n            <tr>\n              <th>Parameter<\/th>\n              <th>Option<\/th>\n              <th>Typical Use<\/th>\n              <th>Notes<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Poles<\/td>\n              <td>1P+N \/ 2P<\/td>\n              <td>Single-phase circuits; simultaneous disconnection when required<\/td>\n              <td>For 3-phase, combine AFDD with 3P\/3P+N protection using <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/MCB\">MCB<\/a><\/td>\n            <\/tr>\n            <tr>\n              <td>Integration<\/td>\n              <td>AFDD + RCBO \/ AFDD + MCB + RCCB<\/td>\n              <td>Final circuits and retrofit boards<\/td>\n              <td>AFDD+RCBO saves space and simplifies wiring; modular stack is flexible for legacy panels<\/td>\n            <\/tr>\n            <tr>\n              <td>Residual-Current Type<\/td>\n              <td>AC \/ A \/ F \/ B (via RCBO\/RCCB)<\/td>\n              <td>Mixed electronic loads, drives, EV\/PV adjacencies<\/td>\n              <td>Follow equipment manual; Type B for smooth DC environments when specified<\/td>\n            <\/tr>\n            <tr>\n              <td>Selectivity<\/td>\n              <td>Time\/coordination settings (series-dependent)<\/td>\n              <td>Critical and high-availability sites<\/td>\n              <td>Ensure AFDD trips the affected branch; avoid upstream blanket trips<\/td>\n            <\/tr>\n            <tr>\n              <td>Environment<\/td>\n              <td>Bedrooms, aging wiring, combustible storage, hospitals, IT rooms<\/td>\n              <td>Higher fire-risk or consequence-of-failure<\/td>\n              <td>Adopt AFDDs where risk or regulation justifies enhanced protection<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n\n      <div class=\"callout\">\n        <span class=\"tag\">Note<\/span>\n        <div class=\"text\">\n          \u201c<strong>AFCI vs AFDD<\/strong>\u201d\uff1aAFCI vs AFDD\u201d: AFCI is the commonly used term in North America, while AFDD is the international term. Both serve a similar purpose (arc fault protection), but the naming and standard systems differ. Select according to the certification requirements of your region.\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <div class=\"divider\"><\/div>\n\n  <!-- ================= SEC7 \u2014 Wiring & Installation ================= -->\n  <section id=\"sec7-wiring\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Wiring &amp; Installation<\/h2>\n      <p class=\"lead\">Correct wiring practices and routine testing maximize AFDD effectiveness.<\/p>\n\n      <div class=\"grid-3\">\n        <div class=\"feature card\">\n          <h4>Single-phase (AFDD 1P+N)<\/h4>\n          <p>Route both line and neutral through the AFDD\u2019s sensing path. When using <strong>AFDD + RCBO<\/strong>, follow terminal markings and torque values; avoid shared neutrals across circuits.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>AFDD with RCBO\/MCB\/RCCB<\/h4>\n          <p>Stack AFDD with <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> for integrated protection or with <a class=\"inline\" href=\"\/MCB\">MCB<\/a> + <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> in modular form. Maintain clear neutral segregation to prevent false detection.<\/p>\n        <\/div>\n        <div class=\"feature card\">\n          <h4>Testing &amp; maintenance<\/h4>\n          <p>Use the TEST function monthly (or per local rules). Inspect terminations, re-torque if required, and replace any unit that fails functional tests or shows visible damage.<\/p>\n        <\/div>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n\n      <div class=\"table-wrap card\">\n        <table aria-label=\"AFDD wiring guidance\">\n          <thead>\n            <tr>\n              <th>Scenario<\/th>\n              <th>Recommended Stack<\/th>\n              <th>Notes<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Bedrooms &amp; accommodations<\/td>\n              <td>AFDD + RCBO (Type A, 30 mA)<\/td>\n              <td>People protection (leakage) + arc-fault mitigation; localized trips on the branch circuit<\/td>\n            <\/tr>\n            <tr>\n              <td>Aging wiring retrofit<\/td>\n              <td>AFDD + RCBO or AFDD + MCB + RCCB<\/td>\n              <td>Legacy boards benefit from modular stacks; confirm enclosure space and busbar compatibility<\/td>\n            <\/tr>\n            <tr>\n              <td>Combustible storage \/ workshops<\/td>\n              <td>AFDD + RCBO, curve C\/D if inrush present<\/td>\n              <td>Consider <a class=\"inline\" href=\"\/AC-SPD\">AC SPD<\/a> upstream where surges are expected<\/td>\n            <\/tr>\n            <tr>\n              <td>IT rooms &amp; data centers<\/td>\n              <td>AFDD + RCBO (Type A\/F)<\/td>\n              <td>Improved immunity to switching noise; maintain neutral segregation<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n      <\/div>\n  <\/section>\n<\/section>\n<!-- ================= END AFDD Landing \u2014 SEC3 to SEC7 ================= -->\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<!-- ================= AFDD Landing \u2014 SEC8 to SEC10 (Kuangya) ================= -->\n<section id=\"afdd-lower\" class=\"afdd-wrap\" aria-label=\"AFDD Lower Sections\">\n  <style>\n    \/* minimal additions; same visual system as SEC3\u20137 *\/\n    .afdd-wrap .sec{padding:64px 0}\n    .afdd-wrap .container{max-width:1160px;margin:0 auto;padding:0 20px}\n    .afdd-wrap .title{font:700 30px\/1.2 ui-sans-serif,system-ui,Segoe UI,Roboto,Arial;color:var(--ink);text-align:center;margin:0 0 12px}\n    .afdd-wrap .lead{color:var(--muted);text-align:center;max-width:940px;margin:0 auto 26px}\n    .afdd-wrap .card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}\n    .afdd-wrap .divider{height:1px;background:linear-gradient(90deg,transparent,#E5E7EB,transparent);margin:28px 0}\n    .afdd-wrap .gap{height:56px}\n    @media (max-width:880px){ .afdd-wrap .sec{padding:46px 0} .afdd-wrap .gap{height:36px} }\n\n    \/* tables *\/\n    .afdd-wrap .table-wrap{overflow:auto;border-radius:16px}\n    .afdd-wrap table{width:100%;min-width:780px;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden}\n    .afdd-wrap thead th{position:sticky;top:0;background:var(--head);text-align:left;font-weight:700;color:#111827}\n    .afdd-wrap th,.afdd-wrap td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}\n    .afdd-wrap tbody tr:nth-child(2n){background:#FAFAFB}\n    .afdd-wrap tbody tr:hover{background:#F6F7F8}\n\n    \/* notes & links *\/\n    .afdd-wrap .note{background:linear-gradient(180deg,#fff,#fff0);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:14px;padding:14px 16px;color:#374151}\n    .afdd-wrap a.inline{color:var(--brand);font-weight:600;text-decoration:none}\n    .afdd-wrap a.inline:hover{text-decoration:underline}\n\n    \/* certs grid *\/\n    .afdd-wrap .grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}\n    @media (max-width:980px){.afdd-wrap .grid-5{grid-template-columns:repeat(3,1fr)}}\n    @media (max-width:620px){.afdd-wrap .grid-5{grid-template-columns:repeat(2,1fr)}}\n    .afdd-wrap .cert{display:flex;align-items:center;justify-content:center;padding:16px}\n    .afdd-wrap .cert img{height:38px;max-width:100%;object-fit:contain;filter:grayscale(18%)}\n\n    \/* FAQ *\/\n    .afdd-wrap details{border:1px solid var(--line);border-radius:14px;background:var(--card);padding:14px 16px;box-shadow:var(--shadow)}\n    .afdd-wrap details+details{margin-top:12px}\n    .afdd-wrap summary{cursor:pointer;font-weight:700;color:#0F172A;list-style:none;outline:none}\n    .afdd-wrap summary::-webkit-details-marker{display:none}\n    .afdd-wrap details[open]{outline:2px solid var(--ring)}\n    .afdd-wrap details p{color:#374151;margin:10px 0 0;line-height:1.75}\n  <\/style>\n\n  <!-- ================= SEC8 \u2014 Technical Data (General) ================= -->\n  <section id=\"sec8-tech\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Technical Data (General)<\/h2>\n      <p class=\"lead\">Typical envelope values for Kuangya AFDD families. Confirm the exact figures in the datasheet of the specific series.<\/p>\n\n      <div class=\"table-wrap card\">\n        <table aria-label=\"AFDD technical data\">\n          <thead>\n            <tr>\n              <th style=\"width:34%\">Parameter<\/th>\n              <th>Typical Value \/ Range<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>Standards &amp; intent<\/td><td>Designed in line with <strong>IEC 62606<\/strong> (arc fault detection). Where integrated with overcurrent\/leakage, associated product standards apply (e.g., IEC\/EN 61009-1 for AFDD+RCBO variants).<\/td><\/tr>\n            <tr><td>Poles<\/td><td>1P+N and 2P for single-phase circuits; three-phase protection achieved via AFDD deployment per phase or solution combined with 3P\/3P+N protection using <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> \/ <a class=\"inline\" href=\"\/MCB\">MCB<\/a>.<\/td><\/tr>\n            <tr><td>Detection scope<\/td><td>Signature analysis of <em>series arc fault<\/em> and <em>parallel arc fault<\/em>; discrimination from benign switching events (series-dependent algorithm).<\/td><\/tr>\n            <tr><td>Residual-current pairing<\/td><td>Pair with appropriate residual-current device type (AC\/A\/F\/B) via <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> to address leakage hazards.<\/td><\/tr>\n            <tr><td>Rated operational voltage<\/td><td>230\u2013240 V~ for single-phase devices; compatibility with 400\u2013415 V~ three-phase panels when used as part of a coordinated stack.<\/td><\/tr>\n            <tr><td>Endurance<\/td><td>Electrical\/mechanical endurance suitable for panel applications; exact figures per series and rating.<\/td><\/tr>\n            <tr><td>Indications &amp; test<\/td><td>Status indicator and TEST function on the front cover; monthly functional test recommended.<\/td><\/tr>\n            <tr><td>Mounting<\/td><td>DIN rail 35 mm (EN 60715), modular widths for retrofit and new builds.<\/td><\/tr>\n            <tr><td>Operating conditions<\/td><td>Typical ambient \u221225&nbsp;\u00b0C \u2026 +55&nbsp;\u00b0C; altitude\/thermal derating per datasheet; pollution degree per series.<\/td><\/tr>\n            <tr><td>Degree of protection<\/td><td>IP20 at terminals when correctly wired; ensure appropriate enclosure rating for the environment.<\/td><\/tr>\n            <tr><td>Coordination<\/td><td>Use with <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/MCB\">MCB<\/a> + <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> for full stack protection (arc + leakage + overcurrent).<\/td><\/tr>\n            <tr><td>Accessories (series-dependent)<\/td><td>Auxiliary contacts, locking options, shunt\/undervoltage releases where available.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n\n      <div class=\"table-wrap card\">\n        <table aria-label=\"AFDD quick selection matrix\">\n          <thead>\n            <tr>\n              <th>Scenario<\/th>\n              <th>Recommended Stack<\/th>\n              <th>Why<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Bedrooms \/ accommodations<\/td>\n              <td>AFDD + <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> (Type A, 30 mA)<\/td>\n              <td>Arc-fault mitigation plus people protection; localized tripping per final circuit.<\/td>\n            <\/tr>\n            <tr>\n              <td>Aging wiring retrofit<\/td>\n              <td>AFDD + RCBO or AFDD + <a class=\"inline\" href=\"\/MCB\">MCB<\/a> + <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a><\/td>\n              <td>Addresses loose connections\/insulation degradation while maintaining code-compliant leakage\/overcurrent protection.<\/td>\n            <\/tr>\n            <tr>\n              <td>Combustible storage \/ workshops<\/td>\n              <td>AFDD + RCBO (curve C\/D if inrush present)<\/td>\n              <td>Reduces ignition likelihood where fuel load is high; consider upstream <a class=\"inline\" href=\"\/AC-SPD\">AC SPD<\/a>.<\/td>\n            <\/tr>\n            <tr>\n              <td>IT rooms &amp; data centers<\/td>\n              <td>AFDD + RCBO (Type A\/F)<\/td>\n              <td>Improved immunity to switching noise; maintain neutral segregation for correct operation.<\/td>\n            <\/tr>\n            <tr>\n              <td>Hospitals &amp; public buildings<\/td>\n              <td>AFDD + RCBO<\/td>\n              <td>Risk-managed selectivity to avoid broad outages while enhancing fire safety.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n      <div class=\"note\">\n        \u201c<strong>AFCI vs AFDD<\/strong>\u201d: AFCI is the common North-American term; AFDD is the international term. Both target arc-fault mitigation,\n        but naming and standard ecosystems differ. Select according to your regional certification requirements.\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <div class=\"divider\"><\/div>\n  <div class=\"gap\"><\/div>\n\n  <!-- ================= SEC9 \u2014 Certifications ================= -->\n  <section id=\"sec9-cert\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">Certifications<\/h2>\n      <p class=\"lead\">Series-dependent approvals. Provide the target market and we will supply the exact certificate set.<\/p>\n\n      <div class=\"grid-5\">\n        <div class=\"cert card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/cert-ce.svg\" alt=\"CE\"><\/div>\n        <div class=\"cert card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/cert-cb.svg\" alt=\"CB Scheme\"><\/div>\n        <div class=\"cert card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/cert-ukca.svg\" alt=\"UKCA\"><\/div>\n        <div class=\"cert card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/cert-rohs.svg\" alt=\"RoHS\"><\/div>\n        <div class=\"cert card\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/cert-iec.svg\" alt=\"IEC 62606\"><\/div>\n      <\/div>\n\n      <div class=\"gap\"><\/div>\n      <div class=\"note\">\n        Availability of specific options (e.g., integrated AFDD+RCBO, higher immunity classes, accessories) may vary with certification scope and series.\n        Always verify model codes and document revisions before submittals.\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <div class=\"divider\"><\/div>\n  <div class=\"gap\"><\/div>\n\n  <!-- ================= SEC10 \u2014 FAQ (expanded answers) ================= -->\n  <section id=\"sec10-faq\" class=\"sec\">\n    <div class=\"container\">\n      <h2 class=\"title\">FAQs \u2014 AFDD<\/h2>\n\n      <details>\n        <summary>How does an AFDD differ from RCCB\/RCBO and MCB?<\/summary>\n        <p>\n          An AFDD focuses on detecting hazardous arcing that may not create enough leakage or current to trip an <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> or <a class=\"inline\" href=\"\/MCB\">MCB<\/a>.\n          When paired with an <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or with MCB+RCCB, you achieve a layered stack: arc-fault mitigation + leakage + overload\/short-circuit protection.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>What kinds of faults can AFDD detect?<\/summary>\n        <p>\n          AFDDs analyze waveform signatures to detect <em>series arc fault<\/em> (caused by loose terminals or damaged conductors in series) and\n          <em>parallel arc fault<\/em> (between conductors). The embedded algorithm aims to distinguish dangerous arcs from normal switching noise.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>Where is AFDD most beneficial?<\/summary>\n        <p>\n          Locations with elevated fire risk or high consequence of failure\u2014bedrooms and accommodations, aging wiring retrofits, combustible storage areas,\n          IT rooms\/data centers, hospitals and public buildings\u2014benefit significantly from early arc-fault intervention.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>How should I select AFDD ratings and types?<\/summary>\n        <p>\n          Choose 1P+N or 2P for single-phase circuits; for three-phase panels, deploy AFDDs per phase or adopt a coordinated AFDD + 3P\/3P+N protection arrangement.\n          Pair with the correct residual-current type (AC\/A\/F\/B) using <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> as required by the load.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>Does AFDD cause nuisance tripping with electronic loads?<\/summary>\n        <p>\n          The detection algorithm is designed to differentiate hazardous arcs from benign high-frequency noise produced by drivers, UPS, or VFDs.\n          Proper neutral segregation, correct routing through the sensing path, and adherence to the manufacturer\u2019s wiring guidance further reduce nuisance trips.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>Is an AFDD mandatory?<\/summary>\n        <p>\n          Requirements are jurisdiction-specific. Some standards recommend AFDDs in particular locations or occupancies.\n          Always check local wiring rules and certification expectations; where not mandated, a risk assessment often justifies adoption.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>Do you have an AFDD wiring diagram?<\/summary>\n        <p>\n          Yes\u2014wiring diagrams are provided per series and configuration (AFDD alone or AFDD + RCBO). In all cases, route both line and neutral correctly\n          through the sensing path, avoid shared neutrals across circuits, and follow torque specifications on terminals.\n        <\/p>\n      <\/details>\n\n      <details>\n        <summary>Can I combine AFDD with AC SPD and other protections?<\/summary>\n        <p>\n          Absolutely. Install <a class=\"inline\" href=\"\/AC-SPD\">AC SPD<\/a> according to coordination rules, and use AFDD with\n          <a class=\"inline\" href=\"\/RCBO\">RCBO<\/a> or <a class=\"inline\" href=\"\/MCB\">MCB<\/a> + <a class=\"inline\" href=\"\/RCCB\">RCCB<\/a> to complete the protection stack.\n          Maintain selectivity so that a fault trips only the affected branch.\n        <\/p>\n      <\/details>\n    <\/div>\n  <\/section>\n<\/section>\n<!-- ================= END AFDD Landing \u2014 SEC8 to SEC10 ================= -->\n","protected":false},"excerpt":{"rendered":"<p>Select Your AFDD Arc Fault Detection Device Detects series and parallel arc faults with high-frequency signature analysis, engineered to coordinate with MCB, RCCB and RCBO for comprehensive protection. 230\/400 V \u2022 B\/C\/D curves 6\u201340 A ratings Nuisance-trip filtering Test button &#038; LED status See Models Get Quote AFDD Portfolio AFDD-1 (1P+N) \u2014 single-phase 230 V [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1608","page","type-page","status-publish","hentry"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/1608","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/comments?post=1608"}],"version-history":[{"count":7,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/1608\/revisions"}],"predecessor-version":[{"id":2444,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/1608\/revisions\/2444"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/media?parent=1608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}