EKU5-T2-20PV Type 2 Surge Protective Device for Solar PV Systems (20kA/DC600-1500V)
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| Product Family ID | OS-ETK-EKU5-T2-20PV |
|---|---|
| Variant SKU Count | 2 |
| Supplier | ETK |
| Supplier Model | EKU5-T2-20PV |
| Product Type | Surge Protective Device |
| Available Voltage Ratings | 600, 800, 1000, 1500VDC |
| Available Poles | 2P / 3P |
| Rated Voltage | 600, 800, 1000, 1500VDC |
| Protection Degree | IP20 (built-in) |
| Iec Category | Type 2 |
| Maximum Discharge Current | 20kA |
| Nominal Discharge Current | 10kA |
| Poles | 2P, 3P / 2P / 3P |
| Protection Degree | IP20 (built-in) |
| Rated Voltage | 600, 800, 1000, 1500VDC |
| Standard | IEC/EN61643-31 |
Product Overview
Type 2 DC surge protection for PV systems with 20kA maximum discharge current and voltage coverage from 600V to 1500V DC. Two-pole and three-pole configurations allow installation at combiner box inputs (2-pole for bipolar DC) or where a third reference conductor is present.
DC SPDs protect inverter DC inputs, combiner box electronics, and monitoring equipment from lightning-induced surge events. A surge can destroy inverter components without visible external damage — SPDs are a low-cost insurance against high replacement costs.
Type 2 DC surge protection devices are required under IEC 62305 and many local codes for arrays in high lightning incidence zones or where the array-to-inverter cable run exceeds 10 metres. Mount the SPD as close as possible to the combiner box DC terminals — lead length between the SPD and the protected circuit directly affects the residual voltage seen by the inverter.
Applications
PV string and array protection
Combiner box internal protection
Inverter DC input circuits
Utility and C&I solar BOS
Certifications & Compliance
Frequently Asked Questions
What is the difference between Type 1 and Type 2 DC SPD?
Type 2 (Class II) protects against induced surges and switching transients, suitable for most rooftop and ground-mount PV without direct lightning exposure. Type 1 (Class I) handles the full lightning impulse current and is required where the PV system has a direct lightning protection system or where Type 1 is mandated by local code.
Where in the PV system should DC SPDs be installed?
Standard practice is at the combiner box input, combiner box output, and at the inverter DC terminal. Cable run length from SPD to protected equipment affects residual surge voltage — keep the lead length as short as possible on both the line and PE conductors.
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