{"id":29570,"date":"2026-06-24T12:40:29","date_gmt":"2026-06-24T04:40:29","guid":{"rendered":"https:\/\/www.cnspd.com\/?page_id=29570"},"modified":"2026-06-24T12:42:36","modified_gmt":"2026-06-24T04:42:36","slug":"pv-combiner-box-spd-for-solar-dc-protection","status":"publish","type":"page","link":"https:\/\/www.cnspd.com\/pt\/pv-combiner-box-spd\/","title":{"rendered":"Caixa de Combina\u00e7\u00e3o PV SPD para Prote\u00e7\u00e3o DC Solar"},"content":{"rendered":"<section class=\"l-section wpb_row height_large width_full\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row via_grid cols_1 laptops-cols_inherit tablets-cols_inherit mobiles-cols_1 valign_top type_default stacking_default\"><div class=\"wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"w-html us_custom_f15df953\"><style>\n  :root {\n    --pvcb-blue: #004898;\n    --pvcb-blue-dark: #00346f;\n    --pvcb-blue-soft: #eaf3ff;\n    --pvcb-text: #172033;\n    --pvcb-muted: #5c6b7a;\n    --pvcb-border: #dbe7f3;\n    --pvcb-bg: #f6f9fc;\n    --pvcb-white: #ffffff;\n    --pvcb-orange: #f59e0b;\n    --pvcb-green: #12a875;\n  }\n\n  .pvcb-page {\n    font-family: inherit;\n    color: var(--pvcb-text);\n    background: #fff;\n    overflow: hidden;\n  }\n\n  .pvcb-page * {\n    box-sizing: border-box;\n  }\n\n  .pvcb-section {\n    padding: 78px 20px;\n  }\n\n  .pvcb-container {\n    max-width: 1180px;\n    margin: 0 auto;\n  }\n\n  .pvcb-bg {\n    background: var(--pvcb-bg);\n  }\n\n  .pvcb-eyebrow {\n    display: inline-flex;\n    align-items: center;\n    gap: 8px;\n    padding: 7px 13px;\n    border-radius: 999px;\n    background: var(--pvcb-blue-soft);\n    color: var(--pvcb-blue);\n    font-size: 13px;\n    font-weight: 800;\n    margin-bottom: 18px;\n  }\n\n  .pvcb-eyebrow::before {\n    content: \"\";\n    width: 7px;\n    height: 7px;\n    border-radius: 50%;\n    background: var(--pvcb-blue);\n  }\n\n  .pvcb-section-title {\n    max-width: 790px;\n    margin-bottom: 38px;\n  }\n\n  .pvcb-section-title.center {\n    text-align: center;\n    margin-left: auto;\n    margin-right: auto;\n  }\n\n  .pvcb-section-title h2 {\n    font-size: clamp(30px, 4vw, 44px);\n    line-height: 1.14;\n    letter-spacing: -0.03em;\n    margin: 0 0 14px;\n    color: var(--pvcb-text);\n  }\n\n  .pvcb-section-title p {\n    margin: 0;\n    color: var(--pvcb-muted);\n    font-size: 17px;\n    line-height: 1.72;\n  }\n\n  .pvcb-btn {\n    display: inline-flex;\n    justify-content: center;\n    align-items: center;\n    min-height: 48px;\n    padding: 13px 22px;\n    border-radius: 8px;\n    background: var(--pvcb-blue);\n    color: #fff !important;\n    font-size: 15px;\n    font-weight: 800;\n    text-decoration: none !important;\n    border: 1px solid var(--pvcb-blue);\n    transition: all 0.22s ease;\n    cursor: pointer;\n  }\n\n  .pvcb-btn:hover {\n    background: var(--pvcb-blue-dark);\n    border-color: var(--pvcb-blue-dark);\n    transform: translateY(-2px);\n  }\n\n  .pvcb-btn.secondary {\n    background: #fff;\n    color: var(--pvcb-blue) !important;\n    border-color: #b7cce4;\n  }\n\n  .pvcb-btn.secondary:hover {\n    background: var(--pvcb-blue-soft);\n  }\n\n  .pvcb-actions {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 14px;\n    align-items: center;\n  }\n\n  .pvcb-hero {\n    position: relative;\n    padding: 92px 20px 82px;\n    background:\n      radial-gradient(circle at 14% 18%, rgba(0,72,152,0.18), transparent 30%),\n      linear-gradient(135deg, #f8fbff 0%, #edf5ff 44%, #ffffff 100%);\n  }\n\n  .pvcb-hero-grid {\n    max-width: 1180px;\n    margin: 0 auto;\n    display: grid;\n    grid-template-columns: 1.04fr 0.96fr;\n    gap: 46px;\n    align-items: center;\n  }\n\n  .pvcb-hero h1 {\n    font-size: clamp(38px, 5vw, 66px);\n    line-height: 1.04;\n    letter-spacing: -0.04em;\n    color: var(--pvcb-text);\n    margin: 0 0 22px;\n  }\n\n  .pvcb-hero h1 span {\n    color: var(--pvcb-blue);\n  }\n\n  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10px;\n  }\n\n  .pvcb-small-btn {\n    display: inline-flex;\n    align-items: center;\n    justify-content: center;\n    min-height: 40px;\n    padding: 10px 14px;\n    border-radius: 7px;\n    background: var(--pvcb-blue);\n    color: #fff !important;\n    text-decoration: none !important;\n    font-size: 14px;\n    font-weight: 800;\n    border: 1px solid var(--pvcb-blue);\n    cursor: pointer;\n  }\n\n  .pvcb-small-btn.secondary {\n    background: #fff;\n    color: var(--pvcb-blue) !important;\n    border-color: #bdd0e7;\n  }\n\n  .pvcb-split {\n    display: grid;\n    grid-template-columns: 0.92fr 1.08fr;\n    gap: 34px;\n    align-items: start;\n  }\n\n  .pvcb-checklist {\n    display: grid;\n    gap: 14px;\n  }\n\n  .pvcb-check {\n    display: grid;\n    grid-template-columns: 34px 1fr;\n    gap: 13px;\n    align-items: start;\n    background: #fff;\n    border: 1px solid var(--pvcb-border);\n    border-radius: 15px;\n    padding: 16px;\n  }\n\n  .pvcb-check span {\n    width: 34px;\n    height: 34px;\n    border-radius: 50%;\n    background: var(--pvcb-blue-soft);\n    color: var(--pvcb-blue);\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    font-weight: 900;\n  }\n\n  .pvcb-check h3 {\n    font-size: 17px;\n    margin: 0 0 5px;\n  }\n\n  .pvcb-check p {\n    margin: 0;\n    color: var(--pvcb-muted);\n    font-size: 14px;\n    line-height: 1.6;\n  }\n\n  .pvcb-flow {\n    display: grid;\n    grid-template-columns: repeat(5, 1fr);\n    gap: 14px;\n  }\n\n  .pvcb-flow-step {\n    background: #fff;\n    border: 1px solid var(--pvcb-border);\n    border-radius: 16px;\n    padding: 20px 16px;\n    min-height: 150px;\n  }\n\n  .pvcb-flow-step b {\n    display: inline-flex;\n    width: 30px;\n    height: 30px;\n    border-radius: 50%;\n    background: var(--pvcb-blue);\n    color: #fff;\n    align-items: center;\n    justify-content: center;\n    font-size: 13px;\n    margin-bottom: 12px;\n  }\n\n  .pvcb-flow-step h3 {\n    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line-height: 1.72;\n    font-size: 15px;\n  }\n\n  .pvcb-cta {\n    background:\n      radial-gradient(circle at 15% 20%, rgba(255,255,255,0.18), transparent 30%),\n      linear-gradient(135deg, #00346f 0%, #004898 56%, #0b72b9 100%);\n    color: #fff;\n    text-align: center;\n  }\n\n  .pvcb-cta h2 {\n    color: #fff;\n    font-size: clamp(30px, 4vw, 46px);\n    line-height: 1.15;\n    letter-spacing: -0.03em;\n    margin: 0 0 16px;\n  }\n\n  .pvcb-cta p {\n    color: rgba(255,255,255,0.84);\n    max-width: 780px;\n    margin: 0 auto 28px;\n    font-size: 17px;\n    line-height: 1.72;\n  }\n\n  .pvcb-cta .pvcb-actions {\n    justify-content: center;\n  }\n\n  .pvcb-cta .pvcb-btn.secondary {\n    background: transparent;\n    color: #fff !important;\n    border-color: rgba(255,255,255,0.52);\n  }\n\n  @media (max-width: 980px) {\n    .pvcb-hero-grid,\n    .pvcb-split {\n      grid-template-columns: 1fr;\n    }\n\n    .pvcb-grid-3,\n    .pvcb-grid-4,\n    .pvcb-products,\n    .pvcb-supply,\n    .pvcb-related {\n      grid-template-columns: repeat(2, 1fr);\n    }\n\n    .pvcb-flow {\n      grid-template-columns: repeat(2, 1fr);\n    }\n  }\n\n  @media (max-width: 600px) {\n    .pvcb-section {\n      padding: 54px 16px;\n    }\n\n    .pvcb-hero {\n      padding: 48px 16px 54px;\n    }\n\n    .pvcb-hero h1 {\n      font-size: 36px;\n    }\n\n    .pvcb-hero-lead {\n      font-size: 16px;\n    }\n\n    .pvcb-hero-card {\n      padding: 14px;\n      border-radius: 18px;\n    }\n\n    .pvcb-real-image {\n      min-height: 260px;\n      padding: 12px;\n    }\n\n    .pvcb-real-image img {\n      max-height: 250px;\n    }\n\n    .pvcb-grid-3,\n    .pvcb-grid-4,\n    .pvcb-products,\n    .pvcb-supply,\n    .pvcb-flow,\n    .pvcb-related {\n      grid-template-columns: 1fr;\n    }\n\n    .pvcb-actions {\n      flex-direction: column;\n      align-items: stretch;\n    }\n\n    .pvcb-btn,\n    .pvcb-small-btn {\n      width: 100%;\n    }\n\n    .pvcb-product-img {\n      min-height: 210px;\n    }\n  }\n<\/style>\n\n<div class=\"pvcb-page\">\n\n  <section class=\"pvcb-hero\">\n    <div class=\"pvcb-hero-grid\">\n      <div>\n        <div class=\"pvcb-eyebrow\">PV Combiner Box SPD Selection Guide<\/div>\n        <h1>PV Combiner Box SPD for <span>Solar DC Protection<\/span><\/h1>\n        <p class=\"pvcb-hero-lead\">\n          LEEYEE helps solar buyers, combiner box builders, and EPC teams select 1000V and 1500V DC SPDs for PV combiner boxes, inverter-side protection, and OEM photovoltaic assemblies.\n        <\/p>\n\n        <div class=\"pvcb-answer-box\">\n          This page focuses on the <strong>surge protective device used inside PV combiner boxes<\/strong>. It helps buyers choose the right DC SPD by PV system voltage, SPD type, installation position, discharge current, remote signal requirement, and OEM combiner box design.\n        <\/div>\n\n        <div class=\"pvcb-actions\">\n          <a class=\"pvcb-btn leeyee-site-popup-btn\" href=\"javascript:void(0);\">Request PV SPD Selection<\/a>\n          <a class=\"pvcb-btn secondary\" href=\"https:\/\/www.cnspd.com\/solar-spd\/\" target=\"_blank\" rel=\"noopener\">View Solar SPD Range<\/a>\n        <\/div>\n      <\/div>\n\n      <div class=\"pvcb-hero-card\">\n        <div class=\"pvcb-real-image\">\n          <img decoding=\"async\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/06\/Electrical-junction-box-with-surge-modules.png\" alt=\"PV combiner box with surge protection modules for solar DC protection\">\n        <\/div>\n        <div class=\"pvcb-image-caption\">\n          PV combiner box with DC surge protection modules, used for solar string protection before inverter input.\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title\">\n        <div class=\"pvcb-eyebrow\">Direct Answer<\/div>\n        <h2>What SPD should be used in a PV combiner box?<\/h2>\n        <p>\n          A PV combiner box should use a <strong>DC-rated surge protective device<\/strong> selected according to the maximum photovoltaic DC voltage, installation position, grounding system, and lightning exposure level.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-grid-3\">\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">1<\/div>\n          <h3>For standard PV combiner boxes<\/h3>\n          <p>\n            Use a <strong>Type 2 DC SPD<\/strong> for common induced surge protection in commercial, industrial, and distributed photovoltaic systems.\n          <\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">2<\/div>\n          <h3>For lightning-exposed PV sites<\/h3>\n          <p>\n            Use a <strong>Type 1+2 DC SPD<\/strong> when the PV system has higher lightning exposure, external lightning protection design, or stricter project requirements.\n          <\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">3<\/div>\n          <h3>For 1000V \/ 1500V systems<\/h3>\n          <p>\n            Match the SPD voltage rating to the PV system design. Common combiner box selections include <strong>1000V DC SPD<\/strong> and <strong>1500V DC SPD<\/strong>.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-bg\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-split\">\n        <div>\n          <div class=\"pvcb-section-title\">\n            <div class=\"pvcb-eyebrow\">Clear Page Scope<\/div>\n            <h2>This is not a complete combiner box product page<\/h2>\n            <p>\n              This page is designed for buyers who need to select the SPD used inside a PV combiner box. If you manufacture or source complete combiner boxes, LEEYEE can support the DC SPD module selection for 1000V and 1500V systems.\n            <\/p>\n          <\/div>\n\n          <div class=\"pvcb-warning\">\n            <strong>Important:<\/strong> Do not use an AC SPD on the DC side of a photovoltaic combiner box. DC SPDs and AC SPDs are designed for different electrical conditions and should not be interchanged.\n          <\/div>\n        <\/div>\n\n        <div class=\"pvcb-checklist\">\n          <div class=\"pvcb-check\">\n            <span>\u2713<\/span>\n            <div>\n              <h3>PV combiner box builders<\/h3>\n              <p>Select DC SPD modules for 4 in 1, 6 in 1, 8 in 1, 12 in 1, or customized PV combiner box assemblies.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>\u2713<\/span>\n            <div>\n              <h3>Solar project buyers<\/h3>\n              <p>Confirm whether the project needs 1000V DC SPD, 1500V DC SPD, Type 2 SPD, or Type 1+2 SPD.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>\u2713<\/span>\n            <div>\n              <h3>OEM electrical suppliers<\/h3>\n              <p>Get support for label, packaging, remote signal option, and batch order requirements.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>\u2713<\/span>\n            <div>\n              <h3>Solar inverter protection<\/h3>\n              <p>Coordinate combiner box SPD and inverter-side DC SPD protection when cable distance or project design requires it.<\/p>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Selection Table<\/div>\n        <h2>PV combiner box SPD selection by application<\/h2>\n        <p>\n          This table gives buyers and AI systems a clean way to match the installation scenario with the right DC SPD type.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-table-wrap\">\n        <table class=\"pvcb-table\">\n          <thead>\n            <tr>\n              <th>Application<\/th>\n              <th>Recommended SPD<\/th>\n              <th>Installation position<\/th>\n              <th>Buyer note<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>1000V PV combiner box<\/td>\n              <td><span class=\"pvcb-tag\">1000V DC Type 2 SPD<\/span><\/td>\n              <td>DC side inside the combiner box<\/td>\n              <td>Suitable for many commercial and industrial PV systems using 1000V DC architecture.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>1500V PV combiner box<\/td>\n              <td><span class=\"pvcb-tag\">1500V DC Type 2 SPD<\/span><\/td>\n              <td>PV string aggregation point before inverter input<\/td>\n              <td>Common for utility-scale and high-voltage photovoltaic systems.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Lightning-exposed PV field<\/td>\n              <td><span class=\"pvcb-tag\">DC Type 1+2 SPD<\/span><\/td>\n              <td>Combiner box or main DC protection point<\/td>\n              <td>Consider Type 1+2 when the project has higher lightning exposure or external LPS design.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Inverter-side DC protection<\/td>\n              <td><span class=\"pvcb-tag\">DC SPD matched to inverter input<\/span><\/td>\n              <td>Before inverter DC input terminal<\/td>\n              <td>Useful when long DC cable runs require coordinated protection at both combiner box and inverter side.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>OEM PV combiner box production<\/td>\n              <td><span class=\"pvcb-tag\">Pluggable DC SPD module<\/span><\/td>\n              <td>DIN rail inside OEM combiner box assembly<\/td>\n              <td>Remote signal, branding, label, and packaging options can be customized.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-bg\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Combiner Box Type Matching<\/div>\n        <h2>SPD selection for 4 in 1, 6 in 1, 8 in 1 and larger PV combiner boxes<\/h2>\n        <p>\n          The number of input strings does not replace electrical selection. SPD choice still depends on DC voltage, project lightning risk, wiring design, and whether remote monitoring is required.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-table-wrap\">\n        <table class=\"pvcb-table\">\n          <thead>\n            <tr>\n              <th>Combiner box type<\/th>\n              <th>Typical SPD selection<\/th>\n              <th>What to confirm<\/th>\n              <th>Recommended buyer action<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>4 in 1 out PV combiner box<\/td>\n              <td>1000V or 1500V DC Type 2 SPD<\/td>\n              <td>System voltage, string fuse, breaker \/ isolator layout<\/td>\n              <td>Send wiring diagram and voltage requirement for SPD matching.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>6 in 1 out PV combiner box<\/td>\n              <td>Type 2 DC SPD or Type 1+2 DC SPD<\/td>\n              <td>Outdoor exposure, cable length, inverter distance<\/td>\n              <td>Consider remote signal contact for maintenance monitoring.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>8 in 1 out PV combiner box<\/td>\n              <td>1000V \/ 1500V pluggable DC SPD<\/td>\n              <td>Grounding system, module space, surge current rating<\/td>\n              <td>Confirm DIN rail space and pole configuration before ordering.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>12 strings or larger combiner box<\/td>\n              <td>Project-specific DC SPD selection<\/td>\n              <td>Lightning risk, system voltage, inverter-side coordination<\/td>\n              <td>Review combiner box and inverter protection together.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Recommended Products<\/div>\n        <h2>LEEYEE DC SPDs for PV combiner boxes<\/h2>\n        <p>\n          Choose according to PV system voltage, SPD type, pole configuration, and monitoring requirement.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-products\">\n        <div class=\"pvcb-product\">\n          <div class=\"pvcb-product-img\">\n            <img decoding=\"async\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/1000.webp\" alt=\"1000V DC SPD for PV combiner box\">\n          <\/div>\n          <div class=\"pvcb-product-body\">\n            <h3>1000V DC SPD for PV Combiner Box<\/h3>\n            <p>\n              For solar combiner boxes and DC-side protection in 1000V photovoltaic systems.\n            <\/p>\n            <ul class=\"pvcb-spec-list\">\n              <li><span>Application<\/span><strong>1000V PV system<\/strong><\/li>\n              <li><span>Installation<\/span><strong>DIN rail<\/strong><\/li>\n              <li><span>Use position<\/span><strong>Combiner box \/ inverter DC side<\/strong><\/li>\n              <li><span>Option<\/span><strong>Remote signal available<\/strong><\/li>\n            <\/ul>\n            <div class=\"pvcb-product-actions\">\n              <a class=\"pvcb-small-btn\" href=\"https:\/\/www.cnspd.com\/1000v-dc-spd\/\" target=\"_blank\" rel=\"noopener\">View 1000V Page<\/a>\n              <a class=\"pvcb-small-btn secondary leeyee-site-popup-btn\" href=\"javascript:void(0);\">Get Quote<\/a>\n            <\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"pvcb-product\">\n          <div class=\"pvcb-product-img\">\n            <img decoding=\"async\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/05\/1500.webp\" alt=\"1500V DC SPD for PV combiner box\">\n          <\/div>\n          <div class=\"pvcb-product-body\">\n            <h3>1500V DC SPD for PV Combiner Box<\/h3>\n            <p>\n              For high-voltage photovoltaic combiner boxes, inverter-side protection, and utility-scale PV projects.\n            <\/p>\n            <ul class=\"pvcb-spec-list\">\n              <li><span>Application<\/span><strong>1500V PV system<\/strong><\/li>\n              <li><span>Installation<\/span><strong>DIN rail<\/strong><\/li>\n              <li><span>Use position<\/span><strong>PV string combiner box<\/strong><\/li>\n              <li><span>Supply<\/span><strong>OEM \/ batch order<\/strong><\/li>\n            <\/ul>\n            <div class=\"pvcb-product-actions\">\n              <a class=\"pvcb-small-btn\" href=\"https:\/\/www.cnspd.com\/dc-spd-up-to-1500v\/\" target=\"_blank\" rel=\"noopener\">View 1500V Page<\/a>\n              <a class=\"pvcb-small-btn secondary leeyee-site-popup-btn\" href=\"javascript:void(0);\">Get Quote<\/a>\n            <\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"pvcb-product\">\n          <div class=\"pvcb-product-img\">\n            <img decoding=\"async\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/06\/Type-12-PV-SPD.png\" alt=\"Type 1+2 DC SPD for PV combiner box\">\n          <\/div>\n          <div class=\"pvcb-product-body\">\n            <h3>Type 1+2 DC SPD for Lightning-Exposed PV Systems<\/h3>\n            <p>\n              For PV systems requiring stronger surge protection coordination in exposed outdoor installations.\n            <\/p>\n            <ul class=\"pvcb-spec-list\">\n              <li><span>Type<\/span><strong>Type 1+2 DC SPD<\/strong><\/li>\n              <li><span>Application<\/span><strong>Solar PV protection<\/strong><\/li>\n              <li><span>Use position<\/span><strong>Main DC protection point<\/strong><\/li>\n              <li><span>Project<\/span><strong>Solar farm \/ exposed site<\/strong><\/li>\n            <\/ul>\n            <div class=\"pvcb-product-actions\">\n              <a class=\"pvcb-small-btn\" href=\"https:\/\/www.cnspd.com\/type-1-2-din-rail-surge-protector\/\" target=\"_blank\" rel=\"noopener\">View Type 1+2 Page<\/a>\n              <a class=\"pvcb-small-btn secondary leeyee-site-popup-btn\" href=\"javascript:void(0);\">Get Quote<\/a>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-bg\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-split\">\n        <div>\n          <div class=\"pvcb-section-title\">\n            <div class=\"pvcb-eyebrow\">Selection Logic<\/div>\n            <h2>How to choose a PV combiner box SPD<\/h2>\n            <p>\n              A combiner box SPD is not selected by price alone. The most important factors are DC voltage, SPD type, installation position, discharge current, pole configuration, and project lightning risk.\n            <\/p>\n          <\/div>\n\n          <div class=\"pvcb-warning\">\n            <strong>Simple rule:<\/strong> first confirm the PV system voltage, then confirm whether the project needs Type 2 or Type 1+2 protection, then match the module structure and remote signal requirement to the combiner box design.\n          <\/div>\n        <\/div>\n\n        <div class=\"pvcb-checklist\">\n          <div class=\"pvcb-check\">\n            <span>1<\/span>\n            <div>\n              <h3>Confirm PV system voltage<\/h3>\n              <p>Choose 1000V DC or 1500V DC SPD according to the maximum PV array voltage and inverter input design.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>2<\/span>\n            <div>\n              <h3>Choose Type 2 or Type 1+2<\/h3>\n              <p>Type 2 is common for induced surge protection. Type 1+2 is considered for higher lightning exposure or LPS-related projects.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>3<\/span>\n            <div>\n              <h3>Check pole configuration<\/h3>\n              <p>Match the SPD module structure to the combiner box wiring, grounding arrangement, and project specification.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>4<\/span>\n            <div>\n              <h3>Decide if remote signal is needed<\/h3>\n              <p>For solar farms and monitored PV systems, remote signal contact can help report SPD status to the maintenance system.<\/p>\n            <\/div>\n          <\/div>\n\n          <div class=\"pvcb-check\">\n            <span>5<\/span>\n            <div>\n              <h3>Coordinate inverter-side protection<\/h3>\n              <p>For long DC cable runs, combiner box and inverter-side protection should be reviewed together.<\/p>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Installation Position<\/div>\n        <h2>Where is the SPD installed in a PV combiner box?<\/h2>\n        <p>\n          The SPD is installed on the DC side of the PV combiner box to limit transient overvoltage before it reaches downstream equipment.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-flow\">\n        <div class=\"pvcb-flow-step\">\n          <b>1<\/b>\n          <h3>PV strings<\/h3>\n          <p>Multiple PV strings generate DC power and enter the combiner box.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-flow-step\">\n          <b>2<\/b>\n          <h3>String fuse<\/h3>\n          <p>String fuses or breakers protect individual circuits.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-flow-step\">\n          <b>3<\/b>\n          <h3>DC SPD<\/h3>\n          <p>The SPD limits transient overvoltage between DC conductors and earth.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-flow-step\">\n          <b>4<\/b>\n          <h3>DC isolator<\/h3>\n          <p>The isolator supports safe maintenance and system disconnection.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-flow-step\">\n          <b>5<\/b>\n          <h3>Inverter input<\/h3>\n          <p>Protected DC output continues toward the solar inverter.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-bg\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Technical Parameters<\/div>\n        <h2>Key parameters buyers should confirm<\/h2>\n        <p>\n          These parameters help engineers and purchasing teams avoid mismatched SPDs in PV combiner box projects.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-table-wrap\">\n        <table class=\"pvcb-table\">\n          <thead>\n            <tr>\n              <th>Parameter<\/th>\n              <th>What it means<\/th>\n              <th>Why it matters for PV combiner boxes<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Uc \/ Ucpv<\/td>\n              <td>Maximum continuous operating voltage for the SPD<\/td>\n              <td>Must match the maximum DC voltage of the PV system.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Type \/ Class<\/td>\n              <td>Type 2 or Type 1+2 surge protection category<\/td>\n              <td>Determines whether the SPD is suitable for normal induced surges or higher lightning exposure.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>In \/ Imax \/ Iimp<\/td>\n              <td>Discharge current parameters depending on SPD type<\/td>\n              <td>Used to compare surge handling capacity under the relevant test waveform.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Up<\/td>\n              <td>Voltage protection level<\/td>\n              <td>Lower Up helps reduce stress on inverter and downstream DC-side equipment.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Poles \/ module structure<\/td>\n              <td>Electrical configuration of the SPD module<\/td>\n              <td>Must match the combiner box wiring and system grounding arrangement.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Remote signal contact<\/td>\n              <td>Optional status monitoring output<\/td>\n              <td>Useful for solar farms, maintenance systems, and OEM smart combiner boxes.<\/td>\n            <\/tr>\n\n            <tr>\n              <td>IEC \/ EN 61643-31<\/td>\n              <td>PV DC SPD testing and selection reference<\/td>\n              <td>Helps procurement teams verify product suitability for photovoltaic DC applications.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Supply Information<\/div>\n        <h2>For PV combiner box SPD buyers<\/h2>\n        <p>\n          LEEYEE supports standard DC SPD supply and OEM combiner box projects requiring stable batch delivery, product labeling, and technical matching.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-supply\">\n        <div class=\"pvcb-supply-item\">\n          <h3>Voltage options<\/h3>\n          <p>1000V and 1500V DC SPD options for common photovoltaic combiner box systems.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-supply-item\">\n          <h3>SPD type<\/h3>\n          <p>Type 2 DC SPD and Type 1+2 DC SPD options for different project risk levels.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-supply-item\">\n          <h3>OEM support<\/h3>\n          <p>Label, packaging, model matching, remote signal option, and batch order support.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-supply-item\">\n          <h3>Documents<\/h3>\n          <p>Datasheet, parameter confirmation, and certificate documents are available on request.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-bg\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-split\">\n        <div class=\"pvcb-real-image\" style=\"border:1px solid var(--pvcb-border); min-height:320px;\">\n          <img decoding=\"async\" src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/06\/Electrical-junction-box-with-surge-modules.png\" alt=\"Electrical junction box with surge protection modules for PV combiner box SPD selection\">\n        <\/div>\n\n        <div>\n          <div class=\"pvcb-section-title\">\n            <div class=\"pvcb-eyebrow\">OEM Combiner Box Support<\/div>\n            <h2>Support for solar combiner box manufacturers<\/h2>\n            <p>\n              If you build complete PV combiner boxes, LEEYEE can help match the DC SPD module to your voltage platform, wiring design, DIN rail space, remote signal requirement, and customer specification.\n            <\/p>\n          <\/div>\n\n          <div class=\"pvcb-grid-4\" style=\"grid-template-columns:repeat(2,1fr);\">\n            <div class=\"pvcb-card\">\n              <h3>1000V \/ 1500V<\/h3>\n              <p>DC SPD solutions for common photovoltaic combiner box voltage platforms.<\/p>\n            <\/div>\n\n            <div class=\"pvcb-card\">\n              <h3>Pluggable design<\/h3>\n              <p>Easy replacement and maintenance for PV combiner box assemblies.<\/p>\n            <\/div>\n\n            <div class=\"pvcb-card\">\n              <h3>Remote signal<\/h3>\n              <p>Supports monitoring requirements for larger solar installations.<\/p>\n            <\/div>\n\n            <div class=\"pvcb-card\">\n              <h3>OEM supply<\/h3>\n              <p>Label, packaging, model matching, and batch order support for electrical box builders.<\/p>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Buyer Checklist<\/div>\n        <h2>Information to send before requesting a quote<\/h2>\n        <p>\n          Sending these details helps us recommend the right PV combiner box SPD faster.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-grid-3\">\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">V<\/div>\n          <h3>PV system voltage<\/h3>\n          <p>Tell us whether the project is 600V, 1000V, 1100V, 1200V, or 1500V DC.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">T<\/div>\n          <h3>SPD type requirement<\/h3>\n          <p>Confirm whether the specification requires Type 2 DC SPD or Type 1+2 DC SPD.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">B<\/div>\n          <h3>Combiner box design<\/h3>\n          <p>Share wiring diagram, pole requirement, DIN rail space, and whether remote signal is needed.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">S<\/div>\n          <h3>String quantity<\/h3>\n          <p>Tell us if the combiner box is 4 in 1, 6 in 1, 8 in 1, 12 in 1, or customized.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">O<\/div>\n          <h3>OEM requirement<\/h3>\n          <p>Confirm whether you need private label, packaging, model matching, or documentation support.<\/p>\n        <\/div>\n\n        <div class=\"pvcb-card\">\n          <div class=\"pvcb-icon\">Q<\/div>\n          <h3>Quantity and market<\/h3>\n          <p>Tell us sample quantity, batch order quantity, and target market certificate requirement.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-bg\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">FAQ<\/div>\n        <h2>PV combiner box SPD FAQ<\/h2>\n      <\/div>\n\n      <div class=\"pvcb-faq\">\n        <details open>\n          <summary>What is a PV combiner box SPD?<\/summary>\n          <p>\n            A PV combiner box SPD is a DC surge protective device installed inside a photovoltaic combiner box to limit transient overvoltage on the DC side before it reaches the solar inverter or downstream equipment.\n          <\/p>\n        <\/details>\n\n        <details>\n          <summary>Should a PV combiner box use Type 2 or Type 1+2 SPD?<\/summary>\n          <p>\n            Type 2 DC SPD is commonly used for standard PV combiner box surge protection. Type 1+2 DC SPD may be selected when the system has higher lightning exposure, external lightning protection design, or stricter project requirements.\n          <\/p>\n        <\/details>\n\n        <details>\n          <summary>Can an AC SPD be used in a solar combiner box?<\/summary>\n          <p>\n            No. The DC side of a photovoltaic system requires a DC-rated SPD. AC SPDs and DC SPDs are designed for different electrical conditions and should not be interchanged.\n          <\/p>\n        <\/details>\n\n        <details>\n          <summary>How do I choose between 1000V and 1500V DC SPD?<\/summary>\n          <p>\n            Choose according to the maximum DC voltage of the PV system and the inverter design. A 1000V PV system should use a suitable 1000V DC SPD, while a 1500V PV system should use a suitable 1500V DC SPD.\n          <\/p>\n        <\/details>\n\n        <details>\n          <summary>Is remote signal necessary for PV combiner box SPD?<\/summary>\n          <p>\n            Remote signal is optional but useful for solar farms, monitored PV systems, and OEM combiner boxes where maintenance teams need to know SPD status without opening each box manually.\n          <\/p>\n        <\/details>\n\n        <details>\n          <summary>Where should the SPD be installed in the PV combiner box?<\/summary>\n          <p>\n            The SPD is normally installed on the DC side inside the combiner box, connected according to the project wiring and grounding design. It should be coordinated with fuses, isolators, and inverter-side protection.\n          <\/p>\n        <\/details>\n\n        <details>\n          <summary>Does the number of combiner box input strings decide the SPD model?<\/summary>\n          <p>\n            Not by itself. A 4 in 1, 6 in 1, or 8 in 1 combiner box may use similar voltage-rated SPDs, but the final choice depends on system voltage, grounding design, lightning risk, and project specification.\n          <\/p>\n        <\/details>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section\">\n    <div class=\"pvcb-container\">\n      <div class=\"pvcb-section-title center\">\n        <div class=\"pvcb-eyebrow\">Related Solar SPD Pages<\/div>\n        <h2>Continue solar SPD selection<\/h2>\n        <p>\n          This page focuses only on PV combiner box SPD. For broader solar SPD or voltage-specific selection, continue with these related pages.\n        <\/p>\n      <\/div>\n\n      <div class=\"pvcb-related\">\n        <a href=\"https:\/\/www.cnspd.com\/solar-spd\/\" target=\"_blank\" rel=\"noopener\">\n          <strong>Solar SPD<\/strong>\n          <span>Choose DC and AC SPDs for photovoltaic systems.<\/span>\n        <\/a>\n\n        <a href=\"https:\/\/www.cnspd.com\/solar-pv-surge-protection\/\" target=\"_blank\" rel=\"noopener\">\n          <strong>Solar PV Surge Protection<\/strong>\n          <span>System-level protection architecture for PV projects.<\/span>\n        <\/a>\n\n        <a href=\"https:\/\/www.cnspd.com\/dc-spd-up-to-1500v\/\" target=\"_blank\" rel=\"noopener\">\n          <strong>1500V DC SPD<\/strong>\n          <span>High-voltage DC SPD selection for solar PV systems.<\/span>\n        <\/a>\n\n        <a href=\"https:\/\/www.cnspd.com\/1000v-dc-spd\/\" target=\"_blank\" rel=\"noopener\">\n          <strong>1000V DC SPD<\/strong>\n          <span>DC SPD selection for 1000V photovoltaic systems.<\/span>\n        <\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"pvcb-section pvcb-cta\">\n    <div class=\"pvcb-container\">\n      <h2>Need a PV combiner box SPD recommendation?<\/h2>\n      <p>\n        Send us your PV system voltage, combiner box string number, wiring diagram, SPD type requirement, and quantity. LEEYEE can help match 1000V \/ 1500V DC SPDs for solar combiner boxes and OEM PV protection assemblies.\n      <\/p>\n\n      <div class=\"pvcb-actions\">\n        <a class=\"pvcb-btn leeyee-site-popup-btn\" href=\"javascript:void(0);\">Request Selection Support<\/a>\n        <a class=\"pvcb-btn secondary\" href=\"https:\/\/www.cnspd.com\/contact\/\" target=\"_blank\" rel=\"noopener\">Contact LEEYEE<\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n\n<\/div>\n\n<script>\n  document.addEventListener('DOMContentLoaded', function () {\n    document.querySelectorAll('.leeyee-site-popup-btn').forEach(function (btn) {\n      btn.addEventListener('click', function (e) {\n        e.preventDefault();\n\n        var trigger = document.querySelector('.w-popup.ush_popup_1 .w-popup-trigger');\n        if (trigger) {\n          trigger.click();\n          return;\n        }\n\n        var fallbackTrigger = document.querySelector('.ush_popup_1 .w-popup-trigger');\n        if (fallbackTrigger) {\n          fallbackTrigger.click();\n          return;\n        }\n\n        window.open('https:\/\/www.cnspd.com\/contact\/', '_blank');\n      });\n    });\n  });\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is a PV combiner box SPD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A PV combiner box SPD is a DC surge protective device installed inside a photovoltaic combiner box to limit transient overvoltage on the DC side before it reaches the solar inverter or downstream equipment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should a PV combiner box use Type 2 or Type 1+2 SPD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Type 2 DC SPD is commonly used for standard PV combiner box surge protection. 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It helps...","protected":false},"author":18,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-29570","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PV Combiner Box SPD for 1000V &amp; 1500V Solar Systems | LEEYEE<\/title>\n<meta name=\"description\" content=\"Choose the right PV combiner box SPD for 1000V and 1500V solar systems. 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