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DC Surge Protective Device (SPD) A/B Type HKB/HKU-PV40 3P 40kA DC1000V Lightning Arrester - Red=Replace Indicator, CE Certified
DC Surge Protective Device (SPD) A/B Type HKB/HKU-PV40 3P 40kA DC1000V Lightning Arrester - Red=Replace Indicator, CE Certified
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☀️ Ultimate DC Surge Protection for High-Voltage Solar Arrays – Type 1+2 Hybrid
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Hybrid A/B Type (Type 1+2): Protects against both direct lightning strikes (10/350µs) and switching surges (8/20µs) in one device.
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1000V DC Rating: Designed for commercial and utility-scale PV systems up to 1000V.
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3-Pole (3P) Configuration: Protects positive (+), negative (-), and ground (PE) – complete isolation for ungrounded arrays.
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40kA Surge Capacity: High-energy dissipation for the most demanding installations.
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Red=Replace Visual Indicator: Green means protected, red means replace – at-a-glance status monitoring.
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CE Certified: Meets IEC 61643-31 European safety standards for photovoltaic applications.
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DIN Rail Mount: Easy installation in combiner boxes, inverter enclosures, and DC panels.
Large-scale solar installations face an elevated risk from direct lightning strikes and severe surge events. Standard Type 2 SPDs provide adequate protection for indirect surges, but when your PV array is exposed to direct strikes – common in open fields, rooftops, and high-lightning areas – you need Type 1+2 hybrid protection.
The HEVGKEOU HKB/HKU-PV40 Series is a Type 1+2 (A/B Type) DC Surge Protective Device engineered for high-voltage photovoltaic systems up to 1000V DC. With a 3-pole (3P) configuration, it safeguards both positive and negative conductors while providing a dedicated ground path – essential for ungrounded or floating PV arrays common in modern installations.
Rated at 40kA surge capacity and certified to IEC 61643-31, this advanced SPD combines the high-energy handling of Type 1 (10/350µs waveform for direct lightning) with the fast response of Type 2 (8/20µs waveform for switching surges) – all in a single, compact DIN rail module.
The red=replace visual indicator ensures you always know your protection status, while CE certification guarantees compliance with European safety standards.
| Threat | Source | Consequence |
|---|---|---|
| Direct Lightning Strike | Strike to array or mounting structure | Instant destruction, fire |
| Nearby Lightning | Strike to ground near array | Massive induced voltages |
| Grid Switching | Utility operations | Transients through inverter |
| Inverter Switching | Internal IGBT switching | High-frequency noise |
| String Faults | Arcing, ground faults | Overvoltage events |








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