Schneider Electric ComPact NSX DC LV438277 molded case circuit breaker, 3-pole, 400 A switching current, 400 A TM-DC thermal-magnetic trip unit at 40 °C, 750 V DC rated, 100 kA breaking capacity at 500 V DC, fixed mount, toggle control.
| Parameter | Value |
|---|---|
| Product / component type | Circuit breaker |
| Device application | Distribution |
| Parameter | Value |
|---|---|
| Number of poles | 3P |
| Parameter | Value |
|---|---|
| [In] rated current | 400 A at 40 °C |
| [Ue] rated operational voltage | 750 V DC |
| [Ui] rated insulation voltage | 750 V DC conforming to IEC 60947-2 |
| Parameter | Value |
|---|---|
| Trip unit name | TM-DC |
| Trip unit technology | Thermal-magnetic |
| Device short name | NSX400S DC |
| Standards | EN/IEC 60947 |
The LV438277 is a Schneider ComPact NSX DC molded case circuit breaker rated for 400 A switching current with a TM-DC thermal-magnetic trip unit set at 400 A at 40 °C, built for 750 V DC networks. It breaks up to 100 kA at 500 V DC (S 100 kA 500 V DC safety category) and carries EN/IEC 60947-2 certification with isolation suitability, making it a fit for DC distribution and motor protection in industrial panels.