Automatic Circuit Breaker NB1-63H 1P C40 10kA

The modular automatic circuit breaker NB1-63H is mounted on a DIN rail. For this purpose, the device is equipped with a holder with two fixed positions. Additionally, the design includes a window for indicating power contacts. The breaker also features special contacts for connecting busbars of PIN and FORK types. The nominal currents of the models in this series range from 1 to 63 A. Short-circuit tripping characteristics: B, C, and D. Additional accessories have been developed for the breaker: auxiliary and signal contact, independent trip unit S9, undervoltage trip unit V9. The durability of this breaker model under load is up to 20 000 mechanical cycles and up to 4 000 electrical cycles.