EKU5-T2-20 Class II/Type 2 Surge Protection Device with 20kA Maximum Discharge Current
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| Product Family ID | OS-ETK-EKU5-T2-20 |
|---|---|
| Variant SKU Count | 6 |
| Supplier | ETK |
| Supplier Model | EKU5-T2-20 |
| Product Type | Surge Protective Device |
| Available Voltage Ratings | 150, 275, 320, 385, 440V AC |
| Available Poles | 1P / 1P+NPE / 2P / 3P / 3P+NPE / 4P |
| Rated Voltage | 150, 275, 320, 385, 440V AC |
| Protection Degree | IP20 (built-in) |
| Iec Category | Type 2 |
| Maximum Discharge Current | 20kA |
| Nominal Discharge Current | 10kA |
| Poles | 1P, 2P, 3P, 4P, 1P+NPE, 3P+NPE / 1P / 1P+NPE / 2P / 3P / 3P+NPE / +1 more |
| Protection Degree | IP20 (built-in) |
| Rated Voltage | 150, 275, 320, 385, 440V AC |
| Standard | IEC/EN61643-11 |
Product Overview
Type 2 AC surge protection device with 20kA maximum discharge current covering 150V to 440V UC and six pole configurations for single-phase and three-phase distribution boards. Type 2 is the standard requirement for most commercial and industrial AC distribution boards without direct lightning exposure.
Install at the distribution board immediately after the main incomer for maximum protection of downstream equipment. The SPD lead length on both the line and PE conductors should be kept as short as possible to minimize residual surge voltage.
AC Type 2 SPDs protect downstream equipment against switching surges and conducted lightning transients at the distribution board level. Install at each main distribution panel with the connecting lead from SPD to the busbar kept as short as practicable — lead inductance increases residual voltage at the SPD terminal during surge discharge.
Applications
Inverter output protection
AC distribution boards
EV and PV support circuits
Residential and commercial electrical BOS
Certifications & Compliance
Frequently Asked Questions
How do I select the correct UC voltage for an AC SPD?
UC must exceed the system maximum continuous operating voltage: 275V for 230/240V AC systems, 385V or 440V for 400/415V three-phase. An undersized UC causes continuous current flow through the MOV, overheating and premature failure.
How do I know when the SPD needs replacement?
Most SPDs have a visual status indicator (green = functional, red = depleted). The MOV absorbs each surge event, gradually depleting its capacity. After a major surge or lightning event, inspect all SPD status windows — a changed indicator means the device should be replaced.
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