Housing for the construction of power switchgear combinations up to 630 A or as a single housing. Made of high-quality polycarbonate with protective insulation. Wall bushings with large openings for the electrical connection of the housings to one another. Cable entry on all housing walls via metric knockouts or mounting flanges. Housing for wall mounting also via external brackets or with mounting rails. Housing with circuit breaker 400 A, 3-pole, in accordance with IEC 60947-2. With PE and N terminals for copper conductors. With overload and short-circuit release. Handle of the circuit breaker can be locked. Cover locks for tool operation.