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WZU4-230 series SPDs are applied in 230/400V (50/60Hz) low-voltage power supply and distribution systems such as computer room equipment, monitoring room equipment, fire control room equipment, telephone room, other low-voltage rooms, offices, and household electrical equipment for preventing them from indirect lightning strike and surges. They are used in the potential connection like the lightning induction prevention between LPZ02 and LPZ03 interfaces.
| Models | WZU4-230/15 | WZU4-230/30 | WZU4-230/60 | WZU4-230/80 |
| According to EN 61643-11, SPD | Level 2 | Level 2 | Level 2 | Level 1 |
| According to IEC 61643-1, SPD | Level Ⅱ | Level Ⅱ | Level Ⅱ |
Level Ⅰ |
| AC nominal voltage Un | 230V/400VAC | |||
| Maximum continuous operating voltage (L-N) Uc | 275V AC | |||
| AC maximum continuous operating voltage (N-PE) Uc | 255V AC | |||
| Nominal discharge current (8/20μs) In | 8kA | 15kA | 30kA | 40kA |
| Maximum discharge current (8/20μs) Imax | 15kA | 30kA | 60kA | 80kA |
| Lightning impulse current (10/350μs) (N-PE) Iimp | 4kA | 8kA | 10kA | 12.5kA |
| Voltage protection level (L-N) Up | ≤1200V | ≤1500V | ≤1800V | ≤2000V |
| Voltage protection level (N-PE) Up | ≤1500V | ≤1500V | ≤1500V | ≤1500V |
| Response time (L-N) Ta | ≤25ns | |||
| Response time (N-PE) Ta | ≤100ns | |||
| Malfunction alert | Green light: normal; red light: invalid | |||
| Protection level | IP 20 | |||
| Remote signal wiring | Normally open, normally close | |||
| Circuit protection | Thermal release + backup fuse release | |||
| Panel function | green-light indicator | |||
| Minimum installation wire cross-sectional area | Minimum 10mm² solid wire / multiplied yarn | |||
| Maximum installation wire cross-sectional area | Maximum 25 mm² flexible wire /32mm² multiplied yarn | |||
| Flame resistance | V0 | |||
| Installation method | 35mm DIN electric rail EN 50022 | |||
| Shell material | PA66/PBT | |||
