Electrical power circuit breaker having an electromagnetically operating trip mechanism

摘要

The electromagnetic trip mechanism of a power circuit breaker has a stationary magnet core (33) which is constructed as a flat U-shaped part with two arms which engage around a section, constructed as a heating conductor (25), of the current path of the power circuit breaker and are used as pole surfaces for an armature (34). The magnet core (33) and the heating conductor (25) are connected by means of a bracket metal sheet (38) which is constructed in a bent manner and has retaining tabs (38B) for the joint attachment of the heating conductor (25) and of a connecting plate (36). The trip mechanism described is particularly space-saving and in the same way is suitable for power circuit breakers having an insulating material housing or other type of construction. <IMAGE>