Circuit breaker with optimised housing stabilisation, in particular at high switching capacities

摘要

The power switch has a switching device region equipped with a quenching chamber device and a contact slide device provided with the movable contact portions. The movable contact portions are positioned opposite to fixed contact portion. Another switching device region has a trigger assembly comprising a short-circuit release portion and an overload release portion. The fixed contact portions are plugged at the housing and stabilized by a tripping case stabilizing element (1) made of plastic such as polyamide 66 (PA66).