The Surge Protective Device (here in after referred to as the SPD) is suitable for power supply systems such as TT, IT, TN-S, TN-C, and TN-C-S with AC 50/60Hz and rated voltages up to 380V. It provides protection against over voltages in the power grid caused by lightning strikes or surges.
Technical Parameters
| Parameter | Model QK-A25 | Model QK-A15 |
|---|---|---|
| Rated Operational Voltage | 220V / 50Hz | 220V / 50Hz |
| Maximum Continuous Operating Voltage (Uc) | ~380V / 50Hz | ~380V / 50Hz |
| Impulse Current (Iimp, 10/350µs) | 25 kA | 15 kA |
| Nominal Discharge Current (In, 8/20µs) | 15 kA | 15 kA |
| Voltage Protection Level (Up) | 2.5 kV | 2.5 kV |
| Short-Circuit Current Withstand Rating | ≤ 300 A | ≤ 300 A |
| Operating Temperature | -40℃ ~ +80℃ | -40℃ ~ +80℃ |
| Enclosure Material | Insulating Material (PBT/PA66) | Insulating Material (PBT/PA66) |
| Degree of Protection (IP Code) | IP20 | IP20 |
| Upstream Fuse (Recommended) | 125 A | 125 A |
| Mounting Type | 35mm Standard DIN Rail | 35mm Standard DIN Rail |