{"id":681,"date":"2025-08-28T08:57:04","date_gmt":"2025-08-28T08:57:04","guid":{"rendered":"https:\/\/cnkuangya.com\/?page_id=681"},"modified":"2026-03-11T09:24:24","modified_gmt":"2026-03-11T09:24:24","slug":"dc-spd","status":"publish","type":"page","link":"https:\/\/cnkuangya.com\/ar\/dc-spd\/","title":{"rendered":"DC SPD"},"content":{"rendered":"\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-38ee274 stk-block-background stk--has-background-overlay\" data-block-id=\"38ee274\"><style>.stk-38ee274 {background-color:#dedcdcf0 !important;background-image:url(https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/banner-hero-sc.webp) !important;}.stk-38ee274:before{background-color:#dedcdcf0 !important;opacity:0.4 !important;}<\/style><div class=\"stk-row stk-inner-blocks has-text-align-left stk-block-content stk-content-align stk-38ee274-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-f357b13\" data-v=\"4\" data-block-id=\"f357b13\"><style>.stk-f357b13-container{max-width:855px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f357b13-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-f357b13-inner-blocks\">\n<h1 class=\"wp-block-heading has-text-align-center\">DC <span style=\"color: var(--theme-palette-color-1, #c21d03);\" class=\"stk-highlight\">Surge<\/span> Protective Device (<span style=\"color: var(--theme-palette-color-1, #c21d03);\" class=\"stk-highlight\">DC SPD<\/span>)<\/h1>\n\n\n\n<h5 class=\"wp-block-heading has-text-align-center\">Solar DC SPD and PV DC SPD solutions for photovoltaic, wind power, and energy storage. Protect your system with reliable surge protection \u2014 Type 2, and Type 1+2 options, from 600V to 2000V.<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Our DC SPDs are designed for <strong>PV arrays, wind turbine nacelles, ESS cabinets, and Etc.<\/strong><\/li>\n\n\n\n<li>Certified to <strong>IEC 61643-31<\/strong>, Kuangya DC SPDs ensure safe, durable, and efficient surge protection.<\/li>\n\n\n\n<li>Available in <strong>customized DC SPD kits (T1+T2)<\/strong> to meet diverse project requirements.<br><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-c24c11b\" data-block-id=\"c24c11b\"><style>.stk-c24c11b .stk-button-group{flex-direction:row !important;align-items:center !important;}.stk-c24c11b .stk-block{flex-basis:0 !important;}.stk-c24c11b .stk-block-button, .stk-c24c11b .stk-block-icon-button{flex:1 0 0% !important;}.stk-c24c11b {max-width:400px !important;min-width:auto !important;padding-top:var(--stk--preset--spacing--none, 0px) !important;padding-right:var(--stk--preset--spacing--none, 0px) !important;padding-bottom:var(--stk--preset--spacing--none, 0px) !important;padding-left:var(--stk--preset--spacing--none, 0px) !important;margin-right:auto !important;margin-left:auto !important;}.stk-c24c11b .stk-inner-blocks{column-gap:50px !important;}<\/style><div class=\"stk-row stk-inner-blocks has-text-align-center stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button popmake-757 stk-block stk-1540ea5 popmake-757\" data-block-id=\"1540ea5\"><style>.stk-1540ea5 , .stk-1540ea5 .stk-button{width:100% !important;}.stk-1540ea5 {flex:1 0 var(--stk-button-group-flex-wrap, 0) !important;}.stk-1540ea5 .stk-button{border-top-left-radius:var(--stk--preset--border-radius--full, 9999px) !important;border-top-right-radius:var(--stk--preset--border-radius--full, 9999px) !important;border-bottom-right-radius:var(--stk--preset--border-radius--full, 9999px) !important;border-bottom-left-radius:var(--stk--preset--border-radius--full, 9999px) !important;}.stk-1540ea5 .stk-button:before{border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:0px !important;}.stk-1540ea5 .stk-button__inner-text{font-weight:700 !important;}<\/style><a class=\"stk-link stk-button stk--hover-effect-scale-more\" href=\"\"><span class=\"stk-button__inner-text\">Get Quote<\/span><\/a><\/div>\n\n\n\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-376ec74\" data-block-id=\"376ec74\"><style>.stk-376ec74 {min-height:var(--stk--preset--block-height--none, 0px) !important;flex:1 0 var(--stk-button-group-flex-wrap, 0) !important;}.stk-376ec74 , .stk-376ec74 .stk-button{width:100% !important;}.stk-376ec74 .stk-button{background:#00000000 !important;border-top-left-radius:var(--stk--preset--border-radius--full, 9999px) !important;border-top-right-radius:var(--stk--preset--border-radius--full, 9999px) !important;border-bottom-right-radius:var(--stk--preset--border-radius--full, 9999px) !important;border-bottom-left-radius:var(--stk--preset--border-radius--full, 9999px) !important;}.stk-376ec74 .stk-button:before{border-style:solid !important;border-color:var(--theme-palette-color-1, #c21d03) !important;}.stk-376ec74 .stk-button__inner-text{font-size:var(--stk--preset--font-size--small, 13px) !important;color:var(--theme-palette-color-8, #ffffff) !important;font-weight:700 !important;}@media screen and (max-width:999px){.stk-376ec74 .stk-button__inner-text{font-size:var(--stk--preset--font-size--small, 13px) !important;}}<\/style><a class=\"stk-link stk-button stk--hover-effect-scale-more\" href=\"#downloadpdf\"><span class=\"has-text-color stk-button__inner-text\">Get Datasheet<\/span><\/a><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-f78e343\" data-block-id=\"f78e343\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-f78e343-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-b5bf176\" data-v=\"4\" data-block-id=\"b5bf176\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-b5bf176-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-b5bf176-inner-blocks\">\n<section id=\"sec-models\">\n  <style>\n    #sec-models{padding:4rem 0;background:#f6f6f6;font-family:Arial, sans-serif !important;}\n    #sec-models .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-models h2{margin:0 0 1.5rem;text-align:center;font-weight:800;font-size:clamp(22px,2.6vw,32px);color:#B5220E}\n    #sec-models 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rgba(0,0,0,.1)}\n    #sec-models .thumb{width:100%;aspect-ratio:1\/1;background:#fafafa center\/cover no-repeat}\n    #sec-models .body{padding:16px 12px 18px;text-align:center}\n    #sec-models .name{margin:0 0 6px;font-weight:800;color:#3C3C3C}\n    #sec-models .sub{margin:0 0 10px;font-size:14px;color:#6b7280}\n    #sec-models .more{margin:0;font-weight:800;color:#FD5732}\n    #sec-models .more:hover{text-decoration:underline}\n  <\/style>\n\n  <div class=\"wrap\">\n    <h2>Choose the Right DC SPD<\/h2>\n\n    <div class=\"filters\" role=\"group\" aria-label=\"Filters\">\n      <button class=\"chip active\" data-token=\"all\">All<\/button>\n      <button class=\"chip\" data-token=\"600v\">600V<\/button>\n      <button class=\"chip\" data-token=\"1000v\">1000V<\/button>\n      <button class=\"chip\" data-token=\"1500v\">1500V<\/button>\n      <button class=\"chip\" data-token=\"2000v\">2000V<\/button>\n      <button class=\"chip\" data-token=\"t1+2\">Type 1+2<\/button>\n      <button class=\"chip\" data-token=\"type2\">Type 2<\/button>\n    <\/div>\n\n    <div class=\"grid\" id=\"product-grid\">\n\n      <!-- Type 1+2 (use second photo URL) -->\n      <a class=\"card\" data-tags=\"1000v,t1+2\" href=\"\/product\/dc-spd-t1-t2-1000vdc\/\">\n        <div class=\"thumb\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/KYPV-1000-3P-1.webp');\" aria-label=\"DC SPD 1000V Type 1+2\"><\/div>\n        <div class=\"body\">\n          <p class=\"name\">KY-15T\/G1000 \u2014 Type 1+2<\/p>\n          <p class=\"sub\">DC SPD 1000V<\/p>\n          <p class=\"more\">Specs &amp; Wiring<\/p>\n        <\/div>\n      <\/a>\n\n      <a class=\"card\" data-tags=\"1500v,t1+2\" href=\"\/product\/dc-spd-t1-t2-1500vdc\/\">\n        <div class=\"thumb\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/KYPV-1500-3p-4.jpg');\" aria-label=\"DC SPD 1500V Type 1+2\"><\/div>\n        <div class=\"body\">\n          <p class=\"name\">KY-15T\/G1500 \u2014 Type 1+2<\/p>\n          <p class=\"sub\">DC SPD 1500V<\/p>\n          <p class=\"more\">Specs &amp; Wiring<\/p>\n        <\/div>\n      <\/a>\n\n      <!-- Type 2 (use first photo URL for 4 products) -->\n      <a class=\"card\" data-tags=\"600v,type2\" href=\"\/product\/dc-spd-600vdc\/\">\n        <div class=\"thumb\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/KYPV-600-3P-1.webp');\" aria-label=\"Solar DC SPD 600V Type 2\"><\/div>\n        <div class=\"body\">\n          <p class=\"name\">KY-40\/G600 \u2014 Type 2<\/p>\n          <p class=\"sub\">DC SPD 600V<\/p>\n          <p class=\"more\">Specs &amp; Wiring<\/p>\n        <\/div>\n      <\/a>\n\n      <a class=\"card\" data-tags=\"1000v,type2\" href=\"\/product\/dc-spd-1000vdc\/\">\n        <div class=\"thumb\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/KYPV-1000-3P-1-1.webp');\" aria-label=\"Solar DC SPD 1000V Type 2\"><\/div>\n        <div class=\"body\">\n          <p class=\"name\">KY-40\/G1000 \u2014 Type 2<\/p>\n          <p class=\"sub\">DC SPD 1000V<\/p>\n          <p class=\"more\">Specs &amp; Wiring<\/p>\n        <\/div>\n      <\/a>\n\n      <a class=\"card\" data-tags=\"1500v,type2\" href=\"\/product\/dc-spd-1500vdc\/\">\n        <div class=\"thumb\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/KYPV-1500-3p-4-1.jpg');\" aria-label=\"Solar DC SPD 1500V Type 2\"><\/div>\n        <div class=\"body\">\n          <p class=\"name\">KY-40\/G1500 \u2014 Type 2<\/p>\n          <p class=\"sub\">DC SPD 1500V<\/p>\n          <p class=\"more\">Specs &amp; Wiring<\/p>\n        <\/div>\n      <\/a>\n\n      <a class=\"card\" data-tags=\"2000v,type2\" href=\"\/product\/dc-spd-2000vdc\/\">\n        <div class=\"thumb\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/KYPV-2000-3P-1.jpg');\" aria-label=\"Solar DC SPD 2000V Type 2\"><\/div>\n        <div class=\"body\">\n          <p class=\"name\">KY-40\/G2000 \u2014 Type 2<\/p>\n          <p class=\"sub\">DC SPD 2000V<\/p>\n          <p class=\"more\">Specs &amp; Wiring<\/p>\n        <\/div>\n      <\/a>\n\n    <\/div>\n  <\/div>\n\n  <script>\n    (function(){\n      const root = document.querySelector('#sec-models');\n      if(!root) return;\n      const chips = root.querySelectorAll('.chip');\n      const cards = root.querySelectorAll('.card');\n\n      function applyFilter(token){\n        cards.forEach(card=>{\n          if(token==='all'){ card.style.display='flex'; return; }\n          const tags = (card.dataset.tags || '').toLowerCase().split(',').map(s=>s.trim());\n          card.style.display = tags.includes(token) ? 'flex' : 'none';\n        });\n      }\n      chips.forEach(chip=>{\n        chip.addEventListener('click',()=>{\n          chips.forEach(c=>c.classList.remove('active'));\n          chip.classList.add('active');\n          applyFilter((chip.dataset.token || 'all').toLowerCase());\n        });\n      });\n      applyFilter('all');\n    })();\n  <\/script>\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-32b098e\" data-block-id=\"32b098e\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-32b098e-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-3e55293\" data-v=\"4\" data-block-id=\"3e55293\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-3e55293-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-3e55293-inner-blocks\">\n<section id=\"sec-guide\" class=\"py-20\" style=\"background:#ffffff;font-family:Arial, sans-serif !important;\">\n  <style>\n    #sec-guide .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-guide h2{margin:0 0 1rem;text-align:center;font-weight:800;font-size:clamp(22px,2.6vw,32px);color:#B5220E}\n    #sec-guide p.intro{color:#666;max-width:820px;margin:0 auto 2rem;text-align:center;font-size:15px}\n    #sec-guide .grid{display:grid;gap:20px;grid-template-columns:repeat(1,minmax(0,1fr))}\n    @media(min-width:690px){#sec-guide .grid{grid-template-columns:repeat(2,1fr)}}\n    @media(min-width:1200px){#sec-guide .grid{grid-template-columns:repeat(3,1fr)}}\n    #sec-guide .card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:20px;box-shadow:0 4px 14px rgba(0,0,0,.05)}\n    #sec-guide .card h3{margin:0 0 10px;font-size:18px;font-weight:800;color:#B5220E}\n    #sec-guide .card ul{margin:0;padding-left:18px;color:#444;font-size:14px;line-height:1.6}\n    #sec-guide .footer-note{margin-top:2rem;text-align:center;color:#666;font-size:13px}\n  <\/style>\n\n  <div class=\"wrap\">\n    <h2>SPD Installation Topologies<\/h2>\n    <p class=\"intro\">\n      DC SPD placement varies with voltage, distance, and lightning risk. These cards illustrate how to apply\n      <strong>solar DC SPD<\/strong> and <strong>PV DC SPD<\/strong> for safe, reliable protection.\n    <\/p>\n\n    <div class=\"grid\">\n      <div class=\"card\">\n        <h3>Type 1+2 at Inverter Input<\/h3>\n        <ul>\n          <li>Voltage: 1000V \/ 1500V<\/li>\n          <li>Best for: Utility-scale PV, wind turbine converters<\/li>\n          <li>Handles direct lightning + switching surges<\/li>\n          <li>Use T1+T2 SPD kit for full protection<\/li>\n        <\/ul>\n      <\/div>\n      <div class=\"card\">\n        <h3>Type 2 in Array Box<\/h3>\n        <ul>\n          <li>Voltage: 600V \/ 1000V<\/li>\n          <li>Best for: Rooftops, ESS cabinets<\/li>\n          <li>Protects against induced surges on DC strings<\/li>\n          <li>Combine with DC fuse for best reliability<\/li>\n        <\/ul>\n      <\/div>\n      <div class=\"card\">\n        <h3>Remote SPD Near Module<\/h3>\n        <ul>\n          <li>Voltage: 600V \/ 1000V<\/li>\n          <li>Best for: Lightning-prone rooftops<\/li>\n          <li>Short lead length improves response time<\/li>\n          <li>Optional redundancy with dual SPDs<\/li>\n        <\/ul>\n      <\/div>\n      <div class=\"card\">\n        <h3>ESS &amp; EV Cabinets<\/h3>\n        <ul>\n          <li>Voltage: 1000V \/ 1500V \/ 2000V<\/li>\n          <li>Best for: Battery energy storage, EV charging<\/li>\n          <li>Continuous protection against switching surges<\/li>\n          <li>Supports high-current DC busbars<\/li>\n        <\/ul>\n      <\/div>\n      <div class=\"card\">\n        <h3>Grounding &amp; Polarity<\/h3>\n        <ul>\n          <li>Strings: Any voltage level<\/li>\n          <li>Correct +\/- polarity &amp; common PE bar<\/li>\n          <li>Critical bonding for SPD performance<\/li>\n          <li>Follow IEC practices for wiring length<\/li>\n        <\/ul>\n      <\/div>\n      <div class=\"card\">\n        <h3>Service &amp; Maintenance<\/h3>\n        <ul>\n          <li>Replaceable module design with status indicator<\/li>\n          <li>Thermal disconnector integrity checks<\/li>\n          <li>Inspection cycle: every 1\u20132 years<\/li>\n          <li>Record surge events where applicable<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n\n    <p class=\"footer-note\">\n      Following these <strong>DC SPD wiring topologies<\/strong> ensures reliable surge protection for PV, wind, and ESS projects.\n    <\/p>\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-cdd4019\" data-block-id=\"cdd4019\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-cdd4019-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-fc51f3f\" data-v=\"4\" data-block-id=\"fc51f3f\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-fc51f3f-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-fc51f3f-inner-blocks\">\n<section id=\"sec-what\" class=\"py-20\" style=\"background:#ffffff;font-family:Arial, sans-serif !important;\">\n  <style>\n    #sec-what .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-what h2{margin:0 0 1rem;text-align:center;font-weight:800;font-size:clamp(22px,2.6vw,32px);color:#B5220E}\n    #sec-what p.lead{color:#666;max-width:820px;margin:0 auto 2rem;text-align:center;font-size:15px}\n    #sec-what .grid{display:grid;gap:20px;grid-template-columns:repeat(1,minmax(0,1fr))}\n    @media(min-width:900px){#sec-what .grid{grid-template-columns:repeat(2,1fr)}}\n    @media(min-width:1200px){#sec-what .grid{grid-template-columns:repeat(3,1fr)}}\n    #sec-what .card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:20px;box-shadow:0 4px 14px rgba(0,0,0,.05)}\n    #sec-what .card h3{margin:0 0 10px;font-size:18px;font-weight:800;color:#B5220E}\n    #sec-what .card ul{margin:0;padding-left:18px;color:#444;font-size:14px;line-height:1.6}\n    #sec-what .links{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:22px}\n    #sec-what .btn{display:inline-block;padding:.7rem 1.1rem;border-radius:999px;font-weight:800;text-decoration:none}\n    #sec-what .btn.brand{background:#FD5732;color:#fff}\n    #sec-what .btn.ghost{border:2px solid #FD5732;color:#FD5732}\n    #sec-what .note{margin-top:18px;text-align:center;color:#777;font-size:13px}\n    #sec-what a{color:#FD5732;text-decoration:none}\n    #sec-what a:hover{text-decoration:underline}\n  <\/style>\n\n  <div class=\"wrap\">\n    <h2>What is a DC SPD?<\/h2>\n    <p class=\"lead\">\n      A <strong>DC Surge Protective Device (DC SPD)<\/strong> limits transient overvoltages caused by lightning or switching, protecting PV arrays,\n      inverters, wind turbine converters, ESS cabinets and DC panels. Select the proper class (Type 1 \/ Type 2 \/ Type 1+2) and voltage (600\u20132000 V DC).\n    <\/p>\n\n    <div class=\"grid\">\n      <div class=\"card\">\n        <h3>Why It Matters<\/h3>\n        <ul>\n          <li>Prevents insulation breakdown and inverter faults from lightning-induced surges.<\/li>\n          <li>Improves uptime for <a href=\"\/pv-combiner-box\">PV combiner boxes<\/a>, inverters and ESS systems.<\/li>\n          <li>Complements overcurrent devices like the <a href=\"\/dc-fuse\">DC fuse (gPV)<\/a>.<\/li>\n        <\/ul>\n      <\/div>\n\n      <div class=\"card\">\n        <h3>What\u2019s Inside<\/h3>\n        <ul>\n          <li>MOV-based modules for <strong>Type 2<\/strong> energy absorption.<\/li>\n          <li>Spark-gap or combined stages for <strong>Type 1 \/ Type 1+2<\/strong> high-energy discharge.<\/li>\n          <li>Thermal disconnector + status indicator; replaceable cartridge design.<\/li>\n        <\/ul>\n      <\/div>\n\n      <div class=\"card\">\n        <h3>Where It\u2019s Used<\/h3>\n        <ul>\n          <li>PV strings, array boxes and inverter DC inputs (<strong>solar DC SPD \/ PV DC SPD<\/strong>).<\/li>\n          <li>Wind turbine nacelle, converter cabinets and tower base panels.<\/li>\n          <li>Energy storage (ESS) and EV charging DC busbars (up to 2000 V DC).<\/li>\n        <\/ul>\n      <\/div>\n\n      <div class=\"card\">\n        <h3>Install &amp; Service<\/h3>\n        <ul>\n          <li>DIN-rail mounting; keep leads short and symmetrical to PE.<\/li>\n          <li>Coordinate with a <a href=\"\/dc-switch-disconnector\">DC switch disconnector<\/a> for isolation.<\/li>\n          <li>Plan inspections every 1\u20132 years; replace modules when indicator shows end-of-life.<\/li>\n        <\/ul>\n      <\/div>\n\n      <div class=\"card\">\n        <h3>Compatibility &amp; Selection<\/h3>\n        <ul>\n          <li>Voltage classes: <strong>600 \/ 1000 \/ 1500 \/ 2000 V DC<\/strong>.<\/li>\n          <li>Classes: <strong>Type 1<\/strong> (direct lightning), <strong>Type 2<\/strong> (induced\/switching), <strong>Type 1+2<\/strong> (combined).<\/li>\n          <li>Use correct polarity (+\/\u2013) and common PE bar; see wiring \/ connection diagrams below.<\/li>\n        <\/ul>\n      <\/div>\n\n      <div class=\"card\">\n        <h3>Standards &amp; References<\/h3>\n        <ul>\n          <li>Compliant with <a href=\"https:\/\/webstore.iec.ch\" target=\"_blank\" rel=\"noopener\">IEC 61643-31<\/a>.<\/li>\n          <li>Integrates with enclosures such as <a href=\"\/waterproof-distribution-box\">IP65\/IP66 waterproof boxes<\/a>.<\/li>\n          <li>Industry guidance from <a href=\"https:\/\/www.seia.org\" target=\"_blank\" rel=\"noopener\">SEIA<\/a>.<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n\n    <div class=\"links\">\n      <a class=\"btn brand\" href=\"#sec-models\">See Models<\/a>\n      <a class=\"btn ghost\" href=\"\/contact-us\">Get Quote<\/a>\n    <\/div>\n\n\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-c983730\" data-block-id=\"c983730\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-c983730-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-8d0f2c4\" data-v=\"4\" data-block-id=\"8d0f2c4\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-8d0f2c4-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-8d0f2c4-inner-blocks\">\n<!-- =========================\nSEC4.5 \u2014 Technical Specs Overview (DC SPD) Clean Version\n========================= -->\n<section id=\"sec-specs\" style=\"font-family:Arial, sans-serif !important;padding:56px 0;background:#ffffff;\">\n  <style>\n    #sec-specs .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-specs h2{text-align:center;font-weight:800;font-size:clamp(22px,2.6vw,32px);color:#B5220E;margin:0 0 14px}\n    #sec-specs p.lead{text-align:center;color:#666;font-size:15px;max-width:860px;margin:0 auto 28px}\n    #sec-specs .table-wrap{overflow-x:auto}\n    #sec-specs table{width:100%;border-collapse:collapse;min-width:720px}\n    #sec-specs th,#sec-specs td{padding:10px 12px;border:1px solid #e5e7eb;text-align:center;font-size:14px}\n    #sec-specs th{background:#FD5732;color:#fff;font-weight:800}\n    #sec-specs tr:nth-child(even){background:#fafafa}\n    #sec-specs td strong{color:#B5220E}\n    #sec-specs .note{text-align:center;color:#777;font-size:13px;margin-top:16px}\n    #sec-specs a{color:#FD5732;font-weight:700;text-decoration:none}\n    #sec-specs a:hover{text-decoration:underline}\n  <\/style>\n\n  <div class=\"wrap\">\n    <h2>Technical Specs Overview<\/h2>\n    <p class=\"lead\">Quick comparison of Kuangya <strong>DC SPD<\/strong> product line by type, voltage class, surge rating and installation.<\/p>\n\n    <div class=\"table-wrap\">\n      <table>\n        <thead>\n          <tr>\n            <th>Model<\/th>\n            <th>Type<\/th>\n            <th>Voltage Class<\/th>\n            <th>Nominal Discharge (In)<\/th>\n            <th>Max Discharge (Imax)<\/th>\n            <th>Standards<\/th>\n            <th>Mounting<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <td><a href=\"https:\/\/cnkuangya.com\/product\/dc-spd-t1-t2-1000vdc\/\">KY-15T\/G1000<\/a><\/td>\n            <td><strong>Type 1+2<\/strong><\/td>\n            <td>1000 V DC<\/td>\n            <td>15 kA<\/td>\n            <td>40 kA<\/td>\n            <td>IEC 61643-31<\/td>\n            <td>DIN Rail, replaceable module<\/td>\n          <\/tr>\n          <tr>\n            <td><a href=\"https:\/\/cnkuangya.com\/product\/dc-spd-t1-t2-1500vdc\/\">KY-15T\/G1500<\/a><\/td>\n            <td><strong>Type 1+2<\/strong><\/td>\n            <td>1500 V DC<\/td>\n            <td>15 kA<\/td>\n            <td>40 kA<\/td>\n            <td>IEC 61643-31<\/td>\n            <td>DIN Rail, replaceable module<\/td>\n          <\/tr>\n          <tr>\n            <td><a href=\"https:\/\/cnkuangya.com\/product\/dc-spd-600vdc\/\">KY-40\/G600<\/a><\/td>\n            <td><strong>Type 2<\/strong><\/td>\n            <td>600 V DC<\/td>\n            <td>20 kA<\/td>\n            <td>40 kA<\/td>\n            <td>IEC 61643-31 \/ UL 1449<\/td>\n            <td>DIN Rail, replaceable module<\/td>\n          <\/tr>\n          <tr>\n            <td><a href=\"https:\/\/cnkuangya.com\/product\/dc-spd-1000vdc\/\">KY-40\/G1000<\/a><\/td>\n            <td><strong>Type 2<\/strong><\/td>\n            <td>1000 V DC<\/td>\n            <td>20 kA<\/td>\n            <td>40 kA<\/td>\n            <td>IEC 61643-31 \/ UL 1449<\/td>\n            <td>DIN Rail, replaceable module<\/td>\n          <\/tr>\n          <tr>\n            <td><a href=\"https:\/\/cnkuangya.com\/product\/dc-spd-1500vdc\/\">KY-40\/G1500<\/a><\/td>\n            <td><strong>Type 2<\/strong><\/td>\n            <td>1500 V DC<\/td>\n            <td>20 kA<\/td>\n            <td>40 kA<\/td>\n            <td>IEC 61643-31<\/td>\n            <td>DIN Rail, replaceable module<\/td>\n          <\/tr>\n          <tr>\n            <td><a href=\"https:\/\/cnkuangya.com\/product\/dc-spd-2000vdc\/\">KY-40\/G2000<\/a><\/td>\n            <td><strong>Type 2<\/strong><\/td>\n            <td>2000 V DC<\/td>\n            <td>20 kA<\/td>\n            <td>40 kA<\/td>\n            <td>IEC 61643-31<\/td>\n            <td>DIN Rail, replaceable module<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <p class=\"note\">For detailed datasheets and wiring diagrams, please refer to the product pages listed above.<\/p>\n  <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<!-- SEC5 \u2014 Applications & Use Cases (first-version tile style; uses Kuangya PV BOX image URLs) -->\n<section id=\"sec-apps\" style=\"background:#f6f6f6;font-family:Arial, sans-serif !important;padding:4rem 0;\">\n  <style>\n    #sec-apps .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-apps h2{margin:0 0 1rem;text-align:center;font-weight:800;font-size:clamp(22px,2.6vw,32px);color:#B5220E}\n    #sec-apps p.lead{color:#666;max-width:820px;margin:0 auto 2rem;text-align:center;font-size:15px}\n\n    #sec-apps .grid{display:grid;gap:16px;grid-template-columns:repeat(1,minmax(0,1fr))}\n    @media(min-width:640px){#sec-apps .grid{grid-template-columns:repeat(2,1fr)}}\n    @media(min-width:1024px){#sec-apps .grid{grid-template-columns:repeat(3,1fr)}}\n\n    #sec-apps .tile{position:relative;display:block;border-radius:14px;overflow:hidden;aspect-ratio:16\/10;\n      border:1px solid #e5e7eb;box-shadow:0 4px 14px rgba(0,0,0,.06);text-decoration:none;color:#fff}\n    #sec-apps .img{position:absolute;inset:0;background:center\/cover no-repeat;filter:saturate(105%)}\n    #sec-apps .tile::after{content:\"\";position:absolute;inset:0;background:linear-gradient(0deg, rgba(0,0,0,.45), rgba(0,0,0,.08))}\n    #sec-apps .cap{position:absolute;left:14px;right:14px;bottom:12px;z-index:2}\n    #sec-apps .t{margin:0;font-weight:800;font-size:18px}\n    #sec-apps .s{margin:2px 0 0;font-size:13px;opacity:.95}\n    #sec-apps .cta{display:inline-block;margin-top:8px;font-weight:800;color:#FD5732;background:#fff;padding:.35rem .7rem;border-radius:999px}\n    #sec-apps .cta:hover{filter:brightness(.95)}\n  <\/style>\n\n  <div class=\"wrap\">\n    <h2>Applications &amp; Use Cases<\/h2>\n    <p class=\"lead\">Typical scenarios for <strong>solar DC SPD \/ PV DC SPD<\/strong>: Rooftop PV, C&amp;I, Utility, Wind, ESS and EV charging.<\/p>\n\n    <div class=\"grid\">\n      <!-- Residential Rooftop -->\n      <a class=\"tile\" href=\"#sec-models\" aria-label=\"Residential rooftop DC SPD application\">\n        <div class=\"img\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Residential-Rooftop.webp');\"><\/div>\n        <div class=\"cap\"><p class=\"t\">Residential Rooftop<\/p><p class=\"s\">PV strings \u2022 Inverter input \u2022 Type 2<\/p><span class=\"cta\">See Models<\/span><\/div>\n      <\/a>\n\n      <!-- Commercial & Industrial Rooftop -->\n      <a class=\"tile\" href=\"#sec-models\" aria-label=\"Commercial &#038; industrial rooftop DC SPD application\">\n        <div class=\"img\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Commercial-Industrial-Rooftop-.webp');\"><\/div>\n        <div class=\"cap\"><p class=\"t\">Commercial Rooftop<\/p><p class=\"s\">Array boxes \u2022 Long DC runs \u2022 Type 2<\/p><span class=\"cta\">See Models<\/span><\/div>\n      <\/a>\n\n      <!-- Utility Ground-Mount PV -->\n      <a class=\"tile\" href=\"#sec-models\" aria-label=\"Utility-scale ground-mount PV DC SPD application\">\n        <div class=\"img\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Ground-Mount-Arrays.webp');\"><\/div>\n        <div class=\"cap\"><p class=\"t\">Utility Ground-Mount PV<\/p><p class=\"s\">Inverter input \u2022 1000\/1500V \u2022 Type 1+2<\/p><span class=\"cta\">See Models<\/span><\/div>\n      <\/a>\n\n      <!-- Wind Power -->\n      <a class=\"tile\" href=\"#sec-models\" aria-label=\"Wind turbine converter cabinet DC SPD application\">\n        <div class=\"img\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/Carports-EV-Canopies.webp');\"><\/div>\n        <div class=\"cap\"><p class=\"t\">Wind Power<\/p><p class=\"s\">Nacelle &amp; converter cabinets \u2022 Type 1+2<\/p><span class=\"cta\">See Models<\/span><\/div>\n      <\/a>\n\n      <!-- Energy Storage (ESS) -->\n      <a class=\"tile\" href=\"#sec-models\" aria-label=\"Energy storage cabinet DC SPD application\">\n        <div class=\"img\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/ESS-DC-Bus-Coupling.webp');\"><\/div>\n        <div class=\"cap\"><p class=\"t\">Energy Storage (ESS)<\/p><p class=\"s\">Battery cabinets \u2022 1000\u20132000V \u2022 Type 2<\/p><span class=\"cta\">See Models<\/span><\/div>\n      <\/a>\n\n      <!-- EV Charging -->\n      <a class=\"tile\" href=\"#sec-models\" aria-label=\"EV charging DC SPD application\">\n        <div class=\"img\" style=\"background-image:url('https:\/\/cnkuangya.com\/wp-content\/uploads\/2025\/09\/MicrogridOff-Grid.png');\"><\/div>\n        <div class=\"cap\"><p class=\"t\">EV Charging<\/p><p class=\"s\">DC busbars \u2022 Switchgear \u2022 Type 2<\/p><span class=\"cta\">See Models<\/span><\/div>\n      <\/a>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-64e82be\" data-block-id=\"64e82be\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-64e82be-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-acd31a5\" data-v=\"4\" data-block-id=\"acd31a5\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-acd31a5-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-acd31a5-inner-blocks\">\n<!-- =========================\nSEC6 \u2014 Application Guidance \/ Selection Guidance\nStyle: Kuangya brand (Arial, gradient #FD5732\u2192#B5220E; titles #B5220E; links\/CTA #FD5732)\n========================= -->\n<section id=\"sec-guidance\" style=\"font-family:Arial, sans-serif !important; padding:56px 0; background:linear-gradient(135deg,#FD5732 0%,#B5220E 100%);\">\n  <style>\n    #sec-guidance .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-guidance .head{text-align:center;color:#fff;margin-bottom:22px}\n    #sec-guidance .head h2{margin:0 0 8px;font-size:clamp(22px,2.6vw,32px);font-weight:800;letter-spacing:.2px}\n    #sec-guidance .head p{margin:0;color:rgba(255,255,255,.9);font-size:15px}\n    #sec-guidance .grid{display:grid;gap:18px;grid-template-columns:repeat(1,minmax(0,1fr));margin-top:24px}\n    @media(min-width:690px){#sec-guidance .grid{grid-template-columns:repeat(2,1fr)}}\n    @media(min-width:1200px){#sec-guidance .grid{grid-template-columns:repeat(4,1fr)}}\n    #sec-guidance .card{background:#fff;border:1px solid #ececec;border-radius:14px;box-shadow:0 6px 18px rgba(0,0,0,.08);padding:18px 16px;display:flex;flex-direction:column;justify-content:space-between;min-height:210px}\n    #sec-guidance .card h3{margin:0 0 8px;font-size:18px;font-weight:800;color:#B5220E}\n    #sec-guidance .card ul{margin:0 0 10px 18px;padding:0;color:#3C3C3C;font-size:14px;line-height:1.55}\n    #sec-guidance .card li{margin:0 0 6px}\n    #sec-guidance .card .cta{margin-top:auto;display:inline-block;align-self:flex-start;background:#fff;border:2px solid #FD5732;color:#FD5732;border-radius:999px;padding:8px 12px;font-weight:800;text-decoration:none}\n    #sec-guidance .card .cta:hover{filter:brightness(.95)}\n    #sec-guidance .foot{margin-top:20px;text-align:center}\n    #sec-guidance .foot a{display:inline-block;background:#fff;color:#FD5732;border-radius:999px;padding:10px 16px;font-weight:800;text-decoration:none;border:2px solid #fff}\n    #sec-guidance .foot a:hover{background:transparent;color:#fff}\n  <\/style>\n\n  <div class=\"wrap\">\n    <div class=\"head\">\n      <h2>Application Guidance<\/h2>\n      <p>Select the right <strong>DC SPD<\/strong> class and voltage by scenario. Match with wiring length and lightning risk for best performance.<\/p>\n    <\/div>\n\n    <div class=\"grid\" aria-label=\"DC SPD selection guidance\">\n\n      <!-- Residential & Small Rooftop -->\n      <article class=\"card\">\n        <h3>Residential &amp; Small Rooftop<\/h3>\n        <ul>\n          <li>Voltage: <strong>600V \/ 1000V<\/strong><\/li>\n          <li>Recommended: <strong>Type 2 DC SPD<\/strong> at inverter input<\/li>\n          <li>Keep leads short &amp; bond to common PE<\/li>\n        <\/ul>\n        <a class=\"cta\" href=\"#sec-models\" aria-label=\"See Type 2 DC SPD 600\u20131000V models\">See Models<\/a>\n      <\/article>\n\n      <!-- Commercial & Industrial PV -->\n      <article class=\"card\">\n        <h3>Commercial &amp; Industrial PV<\/h3>\n        <ul>\n          <li>Voltage: <strong>1000V<\/strong><\/li>\n          <li>Array box &amp; inverter: <strong>Type 2 DC SPD<\/strong><\/li>\n          <li>Parallel MPPTs benefit from distributed SPDs<\/li>\n        <\/ul>\n        <a class=\"cta\" href=\"#sec-models\" aria-label=\"See Type 2 DC SPD 1000V models\">See Models<\/a>\n      <\/article>\n\n      <!-- Utility PV & Wind Power -->\n      <article class=\"card\">\n        <h3>Utility PV &amp; Wind Power<\/h3>\n        <ul>\n          <li>Voltage: <strong>1000V \/ 1500V<\/strong><\/li>\n          <li>Inverter input: <strong>Type 1+2 DC SPD<\/strong><\/li>\n          <li>Coordinate Type 2 in array boxes for staged protection<\/li>\n        <\/ul>\n        <a class=\"cta\" href=\"#sec-models\" aria-label=\"See Type 1+2 DC SPD 1000\u20131500V models\">See Models<\/a>\n      <\/article>\n\n      <!-- ESS & EV Charging -->\n      <article class=\"card\">\n        <h3>ESS &amp; EV Charging<\/h3>\n        <ul>\n          <li>Voltage: <strong>1500V \/ 2000V<\/strong><\/li>\n          <li>Cabinets &amp; DC busbars: <strong>Type 2 DC SPD<\/strong><\/li>\n          <li>Use symmetric, short leads; verify thermal disconnect<\/li>\n        <\/ul>\n        <a class=\"cta\" href=\"#sec-models\" aria-label=\"See Type 2 DC SPD 1500\u20132000V models\">See Models<\/a>\n      <\/article>\n\n    <\/div>\n\n    <div class=\"foot\">\n      <a href=\"\/contact-us\" aria-label=\"Get engineering advice for DC SPD selection\">Get Engineering Advice<\/a>\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-c5895b3\" data-block-id=\"c5895b3\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-c5895b3-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-c0fb56c\" data-v=\"4\" data-block-id=\"c0fb56c\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-c0fb56c-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-c0fb56c-inner-blocks\">\n<!-- =========================\nSEC7 \u2014 Why Choose Kuangya\nStyle: Kuangya brand (Arial; headings #B5220E; accents #FD5732)\n========================= -->\n<section id=\"sec-why\" style=\"font-family:Arial, sans-serif !important; padding:56px 0; background:#ffffff;\">\n  <style>\n    #sec-why .wrap{max-width:1200px;margin:0 auto;padding:0 16px}\n    #sec-why .head{text-align:center;margin-bottom:22px}\n    #sec-why .head h2{margin:0 0 8px;font-size:clamp(22px,2.6vw,32px);font-weight:800;color:#B5220E}\n    #sec-why .head p{margin:0;color:#666;font-size:15px}\n    #sec-why .grid{display:grid;gap:18px;grid-template-columns:repeat(1,minmax(0,1fr));margin-top:26px}\n    @media(min-width:690px){#sec-why .grid{grid-template-columns:repeat(2,1fr)}}\n    @media(min-width:1200px){#sec-why .grid{grid-template-columns:repeat(5,1fr)}}\n    #sec-why .card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;box-shadow:0 6px 18px rgba(0,0,0,.05);padding:18px}\n    #sec-why .icon{width:36px;height:36px;border-radius:10px;background:#FFF2EE;display:flex;align-items:center;justify-content:center;margin-bottom:10px}\n    #sec-why .icon svg{width:22px;height:22px;fill:#FD5732}\n    #sec-why h3{margin:0 0 8px;font-size:18px;font-weight:800;color:#B5220E}\n    #sec-why p{margin:0 0 8px;color:#3C3C3C;font-size:14px;line-height:1.55}\n    #sec-why ul{margin:8px 0 0 18px;color:#444;font-size:14px;line-height:1.55;padding:0}\n    #sec-why li{margin:0 0 6px}\n    #sec-why .cta{margin-top:24px;text-align:center}\n    #sec-why .cta a{display:inline-block;border:2px solid #FD5732;color:#FD5732;padding:10px 16px;border-radius:999px;font-weight:800;text-decoration:none}\n    #sec-why .cta a:hover{background:#FD5732;color:#fff}\n  <\/style>\n\n  <div class=\"wrap\">\n    <div class=\"head\">\n      <h2>Why Choose Kuangya for DC SPD<\/h2>\n      <p>Factory-built quality, complete voltage range, and reliable protection aligned with IEC 61643-31.<\/p>\n    <\/div>\n\n    <div class=\"grid\" aria-label=\"Kuangya strengths for DC SPD\">\n\n      <!-- 1. Factory Direct -->\n      <article class=\"card\">\n        <div class=\"icon\" aria-hidden=\"true\">\n          <svg viewBox=\"0 0 24 24\"><path d=\"M3 21h18v-8l-6-3-6 3V5L3 8v13zm8-10 4-2 4 2v8H11v-8zM5 10l4-2v13H5V10z\"\/><\/svg>\n        <\/div>\n        <h3>Factory Direct<\/h3>\n        <p>In-house R&amp;D and manufacturing ensure consistent performance and fast response.<\/p>\n        <ul>\n          <li>Stable supply &amp; traceable QA<\/li>\n          <li>Engineering support for projects<\/li>\n        <\/ul>\n      <\/article>\n\n      <!-- 2. Complete Range -->\n      <article class=\"card\">\n        <div class=\"icon\" aria-hidden=\"true\">\n          <svg viewBox=\"0 0 24 24\"><path d=\"M3 5h18v2H3zM3 11h18v2H3zM3 17h18v2H3z\"\/><\/svg>\n        <\/div>\n        <h3>Complete Range<\/h3>\n        <p>600\u20132000V DC coverage with Type 1, Type 2 and Type 1+2 options for PV, wind and ESS.<\/p>\n        <ul>\n          <li>KY-15T\/G (T1+T2), KY-40\/G (T2)<\/li>\n          <li>1000V \/ 1500V utility-class ready<\/li>\n        <\/ul>\n      <\/article>\n\n      <!-- 3. Reliable Build -->\n      <article class=\"card\">\n        <div class=\"icon\" aria-hidden=\"true\">\n          <svg viewBox=\"0 0 24 24\"><path d=\"M12 2 2 7l10 5 10-5-10-5zm0 7L4 6.2V12l8 4 8-4V6.2L12 9zM4 14v4l8 4 8-4v-4l-8 4-8-4z\"\/><\/svg>\n        <\/div>\n        <h3>Reliable Build<\/h3>\n        <p>Thermal disconnector and status indicator, replaceable modules for quick service.<\/p>\n        <ul>\n          <li>Coordination with fuses and switches<\/li>\n          <li>Robust terminals &amp; PE bonding<\/li>\n        <\/ul>\n      <\/article>\n\n      <!-- 4. Fast Lead Time -->\n      <article class=\"card\">\n        <div class=\"icon\" aria-hidden=\"true\">\n          <svg viewBox=\"0 0 24 24\"><path d=\"M3 12a9 9 0 1 1 9 9v-2a7 7 0 1 0-7-7H3zm8-6h2v7h-5v-2h3V6z\"\/><\/svg>\n        <\/div>\n        <h3>Fast Lead Time<\/h3>\n        <p>Stocked configurations and agile production to meet project schedules.<\/p>\n        <ul>\n          <li>Global shipping options<\/li>\n          <li>Stable replenishment cycle<\/li>\n        <\/ul>\n      <\/article>\n\n      <!-- 5. OEM \/ ODM -->\n      <article class=\"card\">\n        <div class=\"icon\" aria-hidden=\"true\">\n          <svg viewBox=\"0 0 24 24\"><path d=\"M3 17.25V21h3.75L17.81 9.94l-3.75-3.75L3 17.25zM20.71 7.04a1 1 0 0 0 0-1.41l-2.34-2.34a1 1 0 0 0-1.41 0l-1.83 1.83 3.75 3.75 1.83-1.83z\"\/><\/svg>\n        <\/div>\n        <h3>OEM \/ ODM<\/h3>\n        <p>Label, housing and rating customization to fit local codes and branding.<\/p>\n        <ul>\n          <li>Custom kits (T1+T2) and voltages<\/li>\n          <li>Documentation &amp; drawings support<\/li>\n        <\/ul>\n      <\/article>\n\n    <\/div>\n\n    <div class=\"cta\">\n      <a href=\"\/contact-us\" aria-label=\"Contact Kuangya for DC SPD projects\">Talk to Sales<\/a>\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-f458c8a\" data-block-id=\"f458c8a\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-f458c8a-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-4f80236\" data-v=\"4\" data-block-id=\"4f80236\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-4f80236-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-4f80236-inner-blocks\">\n<!-- =========================\nSEC \u2014 FAQ (optimized for lower keyword density) + CTA\nStyle: Kuangya brand (Arial; headings #B5220E; accents #FD5732)\n========================= -->\n<section id=\"sec-faq\" class=\"ky-faq\" style=\"font-family:Arial, sans-serif;\">\n  <style>\n    .ky-faq{padding:64px 0;background:#fafafa}\n    .ky-faq .wrap{max-width:900px;margin:0 auto;padding:0 16px}\n    .ky-faq h2{text-align:center;color:#B5220E;font-weight:800;\n      font-size:clamp(22px,2.6vw,32px);margin:0 0 28px}\n    .ky-faq .item{border-bottom:1px solid #e5e7eb;padding:18px 0}\n    .ky-faq .q{font-weight:700;color:#111827;cursor:pointer;font-size:16px;margin:0}\n    .ky-faq .a{margin:8px 0 0;color:#374151;font-size:15px;line-height:1.55;display:none}\n    .ky-faq .item.active .a{display:block}\n    .ky-faq .cta{text-align:center;margin-top:38px}\n    .ky-faq .cta a{display:inline-block;background:#FD5732;color:#fff;padding:12px 24px;\n      border-radius:999px;font-weight:700;text-decoration:none}\n    .ky-faq .cta a:hover{background:#B5220E}\n  <\/style>\n\n  <div class=\"wrap\">\n    <h2>Frequently Asked Questions<\/h2>\n\n    <!-- 1 -->\n    <div class=\"item active\">\n      <p class=\"q\">What is the difference between <strong>Type 1, Type 2, and Type 1+2 devices<\/strong>?<\/p>\n      <div class=\"a\">\n        <strong>Type 1<\/strong> surge arrestors handle lightning currents at service entrances; \n        <strong>Type 2<\/strong> protective devices absorb switching\/induced surges inside PV\/ESS systems; \n        <strong>Type 1+2<\/strong> combines both for inverter inputs or wind nacelles. These categories apply to Kuangya <strong>DC SPDs<\/strong>. \n        See our overview at <a href=\"\/dc-spd\">\/dc-spd<\/a>.\n      <\/div>\n    <\/div>\n\n    <!-- 2 -->\n    <div class=\"item\">\n      <p class=\"q\">How do I choose the right <strong>voltage class<\/strong> (600 \/ 1000 \/ 1500 \/ 2000 V)? What about 500 \/ 660 \/ 690 V?<\/p>\n      <div class=\"a\">\n        Select a photovoltaic surge protector rated for the <em>highest<\/em> DC bus (Voc \u00d7 temperature factor). Rooftop arrays: 600\u20131000 V; utility PV: 1500 V; \n        ESS\/EV: up to 2000 V. Industrial DC buses often run at 500\/660\/690 V and typically use Type 2 modules.\n      <\/div>\n    <\/div>\n\n    <!-- 3 -->\n    <div class=\"item\">\n      <p class=\"q\">How is a <strong>wiring diagram<\/strong> applied in solar arrays?<\/p>\n      <div class=\"a\">\n        Place <strong>Type 2<\/strong> modules in combiner boxes and <strong>Type 1+2<\/strong> units at inverter inputs. Keep leads short, paired, and bonded to PE. \n        For a <em>dc spd wiring diagram<\/em> example, see the guide at <a href=\"\/dc-spd\">\/dc-spd<\/a>.\n      <\/div>\n    <\/div>\n\n    <!-- 4 -->\n    <div class=\"item\">\n      <p class=\"q\"><strong>IEC 61643-31<\/strong> vs <strong>UL 1449<\/strong> \u2014 which should I follow?<\/p>\n      <div class=\"a\">\n        IEC 61643-31 is common in EU\/international PV and industrial DC projects; UL 1449 is widely used in North America. \n        Cross-region deployments can specify units tested to both standards.\n      <\/div>\n    <\/div>\n\n    <!-- 5 -->\n    <div class=\"item\">\n      <p class=\"q\">How to coordinate surge protection with <strong>fuses and switches<\/strong>?<\/p>\n      <div class=\"a\">\n        Use <a href=\"\/dc-fuse\">gPV fuses<\/a> within the device\u2019s <em>maximum upstream protection<\/em> rating and add \n        <a href=\"\/dc-switch-disconnector\">DC disconnectors<\/a> or <a href=\"\/dc-breaker\">DC breakers<\/a> for isolation. \n        Ensure the fuse\u2019s current rating meets short-circuit withstand requirements.\n      <\/div>\n    <\/div>\n\n    <!-- 6 -->\n    <div class=\"item\">\n      <p class=\"q\">What is the recommended <strong>lead length<\/strong> and placement? Can I add units near the module?<\/p>\n      <div class=\"a\">\n        Keep the total path as short as possible. Typical practice: Type 2 in the array box, Type 1+2 at the inverter. \n        Near-module protectors are optional for long cable runs or lightning-prone regions; ensure service access and proper enclosure rating.\n      <\/div>\n    <\/div>\n\n    <!-- 7 -->\n    <div class=\"item\">\n      <p class=\"q\">When should I <strong>replace a surge module<\/strong>?<\/p>\n      <div class=\"a\">\n        Replace if the status window turns red, a thermal disconnect operates, or after a major surge event. \n        Kuangya units use <em>replaceable cartridges<\/em>; after replacement, record the date and re-check torque\/grounding.\n      <\/div>\n    <\/div>\n\n    <!-- 8 -->\n    <div class=\"item\">\n      <p class=\"q\">Can these devices be used in <strong>ESS, EV charging, and wind turbines<\/strong> (nacelle, yaw, pitch, converter cabinets)?<\/p>\n      <div class=\"a\">\n        Yes. ESS\/EV DC busbars typically use 1000\u20132000 V Type 2 modules; wind turbine nacelle, yaw\/pitch systems and converter cabinets often place Type 1+2 at the DC bus,\n        coordinated with downstream Type 2.\n      <\/div>\n    <\/div>\n\n    <!-- 9 -->\n    <div class=\"item\">\n      <p class=\"q\">What about <strong>IP rating<\/strong>, temperature and maintenance interval?<\/p>\n      <div class=\"a\">\n        DIN-rail modules rely on the enclosure\u2019s IP grade; outdoor installations require weatherproof housings. \n        Follow datasheet temperature limits and inspect every 6\u201312 months: terminal torque, PE bonding, and status indicators.\n      <\/div>\n    <\/div>\n\n  <\/div>\n\n  <script>\n    \/\/ lightweight accordion\n    document.querySelectorAll('#sec-faq .q').forEach(q=>{\n      q.addEventListener('click',()=>q.parentElement.classList.toggle('active'));\n    });\n  <\/script>\n\n  <!-- FAQ Schema (JSON-LD) \u2014 neutral wording to avoid keyword stuffing -->\n  <script type=\"application\/ld+json\">\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the difference between Type 1, Type 2, and Type 1+2 devices?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Type 1 arrestors handle lightning currents, Type 2 absorbs switching or induced surges, and Type 1+2 combines both for inverter inputs or wind nacelles.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"How do I choose the right voltage class (600\/1000\/1500\/2000 V)? What about 500\/660\/690 V?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Select a protector rated for the highest DC bus (Voc \u00d7 temperature factor). Rooftop arrays use 600\u20131000 V; utility PV 1500 V; ESS\/EV up to 2000 V; industrial buses 500\u2013690 V with Type 2 modules.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"How is a wiring diagram applied in solar arrays?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Place Type 2 modules in combiner boxes and Type 1+2 units at inverter inputs. Keep leads short, paired, and bonded to PE.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"IEC 61643-31 vs UL 1449 \u2014 which should I follow?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"IEC 61643-31 is common in EU\/international projects; UL 1449 is used widely in North America. Cross-region deployments can specify both.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"How to coordinate surge protection with fuses and switches?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Use gPV fuses within the device\u2019s upstream protection limit and add disconnectors or breakers for isolation. Ensure the fuse rating meets short-circuit withstand.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What lead length and placement are recommended? Can I add units near the module?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Keep total path length minimal; Type 2 in array boxes and Type 1+2 at the inverter. Near-module protectors are optional for long runs or high-risk sites.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"When should I replace a surge module?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Replace when the status window shows red, a thermal disconnect operates, or after a major surge event; then re-check torque and grounding.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Can these devices be used in ESS, EV charging, and wind turbines?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Yes. Use 1000\u20132000 V Type 2 modules in ESS\/EV buses; place Type 1+2 at wind turbine DC buses (nacelle, yaw, pitch), coordinated with downstream Type 2.\"\n        }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What about IP rating, temperature and maintenance interval?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Rely on the enclosure\u2019s IP grade for DIN-rail modules; outdoor installs need weatherproof housings. Follow datasheet temperature and inspect every 6\u201312 months.\"\n        }\n      }\n    ]\n  }\n  <\/script>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-65ec90b\" id=\"downloadpdf\" data-block-id=\"65ec90b\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-65ec90b-column alignfull\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-0a51454\" data-v=\"4\" data-block-id=\"0a51454\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-0a51454-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-0a51454-inner-blocks\">\n<!-- \u6837\u672c\u4e0b\u8f7d\u533a\u5757 (\u7eaf\u5185\u8054CSS\uff0c\u65e0\u5916\u90e8\u4f9d\u8d56\uff0c\u76f4\u63a5\u7c98\u8d34\u81f3\u53e4\u817e\u5821 \"\u81ea\u5b9a\u4e49 HTML\" \u533a\u5757) -->\n<style>\n    \/* 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.ky-cover p {\n        font-size: 0.75rem;\n        color: #9ca3af;\n        font-weight: 500;\n        margin: 0;\n    }\n\n    \/* \u54cd\u5e94\u5f0f\u5a92\u4f53\u67e5\u8be2\uff1a\u5e73\u677f\u53ca\u684c\u9762\u7aef *\/\n    @media (min-width: 640px) {\n        .ky-container { padding: 0 1.5rem; }\n    }\n    @media (min-width:690px) {\n        .ky-card { flex-direction: row; }\n        .ky-left { width: 60%; padding: 3rem; }\n        .ky-right { width: 40%; border-top: none; border-left: 1px solid #f3f4f6; }\n        .ky-title { font-size: 2.25rem; line-height: 2.5rem; }\n    }\n    @media (min-width:1000px) {\n        .ky-container { padding: 0 2rem; }\n    }\n<\/style>\n\n<section id=\"ky-catalog-download\">\n    <div class=\"ky-container\">\n        \n        <!-- \u4e3b\u5361\u7247\u5bb9\u5668 -->\n        <div class=\"ky-card\">\n            \n            <!-- \u5de6\u4fa7\uff1a\u6587\u672c\u4e0e\u6309\u94ae\u533a -->\n            <div class=\"ky-left\">\n                <!-- \u6807\u7b7e -->\n                <div class=\"ky-tag\">PDF Resources<\/div>\n                \n                <!-- \u6807\u9898 -->\n                <h2 class=\"ky-title\">\n                    Download Our Full <span>Product Catalog<\/span>\n                <\/h2>\n                \n                <!-- \u63cf\u8ff0 -->\n                <p class=\"ky-desc\">\n                    Get comprehensive details on our DC SPD and Fuse products. The catalog includes detailed technical specifications, installation guidelines, dimension drawings, and selection charts.\n                <\/p>\n                \n                <!-- \u4e0b\u8f7d\u6309\u94ae\u7ec4 -->\n                <div class=\"ky-btn-group\">\n                    <a href=\"https:\/\/cnkuangya.com\/wp-content\/uploads\/2026\/03\/kuangya-catalog-for-spd-and-fuse_compressed.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"ky-btn\">\n                        Download Catalog (PDF)\n                    <\/a>\n                    <p class=\"ky-hint\">File size: ~5MB. Updated: March 2026.<\/p>\n                <\/div>\n            <\/div>\n\n            <!-- \u53f3\u4fa7\uff1a\u5c01\u9762\u6a21\u62df\u56fe\u533a -->\n            <div class=\"ky-right\">\n                <div class=\"ky-cover\">\n                    <div class=\"ky-cover-top\"><\/div>\n                    \n                    <h3>KUANGYA<\/h3>\n                    <div class=\"ky-cover-line\"><\/div>\n                    \n                    <h4>Surge Protective<br>Devices &#038; Fuses<\/h4>\n                    \n                    <div class=\"ky-cover-bottom\">\n                        <p>Product Catalog 2026<\/p>\n                    <\/div>\n                <\/div>\n            <\/div>\n\n        <\/div>\n    <\/div>\n<\/section>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>DC Surge Protective Device (DC SPD) Solar DC SPD and PV DC SPD solutions for photovoltaic, wind power, and energy storage. Protect your system with reliable surge protection \u2014 Type 2, and Type 1+2 options, from 600V to 2000V. Get Quote Get Datasheet Choose the Right DC SPD All 600V 1000V 1500V 2000V Type 1+2 [&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-681","page","type-page","status-publish","hentry"],"blocksy_meta":{"has_hero_section":"disabled","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/681","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=681"}],"version-history":[{"count":17,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/681\/revisions"}],"predecessor-version":[{"id":2609,"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/pages\/681\/revisions\/2609"}],"wp:attachment":[{"href":"https:\/\/cnkuangya.com\/ar\/wp-json\/wp\/v2\/media?parent=681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}