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| Model. No. | iSPD20C/4-275S |
| SPD protection conforms to IEC 61643-11 / EN 61643-11 | Type 2 |
| SPD installation type conforms to IEC 61643-11 / EN 61643-11 | Class II |
| Protection level conforms to DIN VDE0675-6 | C |
| Type of Network | TT, TN |
| Protection mode | L1, L2, L3→PE, N→PE |
| Nominal Voltage UN | 230 Vac/50(60)Hz |
| Maximum continuous operating voltage UC | 275 Vac/50(60)Hz |
| Short-circuit withstand capability Isccr | 20 kA |
| Continuous operating current IC | <20 µA |
| Rated load current IL | 80 A |
| Residual current IPE | ≤20 µA dc ≤500 µA ac |
| Standby power consumption PC | ≤25 mVA |
| Maximum discharge current (8/20μs) Imax | 40 kA |
| Nominal discharge current (8/20μs) In | 20 kA |
| Voltage protection level Up | ≤1.3 kV |
| Isolation resistance Risol | >1000 MΩ |
| Response time tA | ≤25 ns |
| Remote control contact | YES |
| Temperature monitoring | YES |
| Disconnection indicator | Mechanical indicator (Green: OK, Red: Replace) |
| I/O Connections | By screw terminal: 10-35mm2 By connection bus |
| Installation location | Inside |
| Mounting type | Symmetrical rail (EN50022/DIN46277-3) |
| Color | Gray |
| Degree of protection | IP20 |
| Housing material | UL94V-0 |
| Ambient temperature | -40°C ~ +80°C |
| Altitude | ≤2000 m (amsl) |
| Permissible humidity | 30% ~ 90% |