Features of Surge Protective Device:
- Integrated design, expedient installation and simple maintenace. Products are applicable for interface LPZ1-LPZ2(lightning protection zones)
- The core parts are metal oxide vanistor with high discharge capacity & reliable quality
- Low residual voltage, fast response time
- Thermo Dynamic control disconnector can automatically cutoff the circuit to protect from fire accident entirely
- The status indicator can indicate operating status syllabify and straightly. Remote alert function makes your control easy
- Products can be fit for various power nerwork systems
- Plug-in protection module can be replaced easily when it is failed

| |
KM20C/4 -250 |
KM20C/4 -275 |
KM20C/4 -320 |
KM20C/4 -385 |
KM20C/4 -420 |
| Max.continuous operating volage Uc (V) |
250V |
275V |
320V |
385V |
420V |
| Voltage protection level L-N(20kA)Up |
≤1.2kV |
≤1.2kV |
≤1.5kV |
≤1.8kV |
≤2.0kV |
| Power network system |
TT/TN-S |
| Nominal discharge current In(8/20 μs) |
20kA |
| Max. discharge current Imax(8/20 μs) |
40kA |
| Operating temperature range |
-40°c~+85°c |
| Relative humidity(at room temperature) |
≤95% |
| Insulation resistance |
>10³MΩ |
| Test standards |
IEC 61643-1:1998 |
| Mouting on |
35mm²DIN rail |
| Degrees of protection |
IP20 |