Abstract: A novel fixing element (5) is proposed which extends over the entire housing base (2) of the switching device (1) and, with the housing base (2), forms a locking mechanism. Provided in the housing base (2) is a rectangular recess (3) which is substantially wider than the width of the profiled rail (4) and forms a nose (24) which grips round the profiled rail (4). The locking mechanism is formed by one end of the fixing element (5), and the other end has a second nose (23) which grips round the profiled rail (4). The fixing element (5) can subsequently be attached to the riveted or screwed-together switching device (1).

Abstract: A circuit breaker including a manually operated lever, a movable contact lever for opening and closing the electrical circuit through the circuit breaker, a switch latch which connects the manually operated lever to the movable contact lever and which activates the movable contact lever, a thermal trigger connected to the switch latch and a magnetic trigger, connected to the switch latch. The magnetic trigger, the contact lever, the switch latch and the thermal trigger all occupy separate compartments.

Abstract: A bipolar protective switch has a two-piece housing. An electromagnet constitutes the actuating device made either in the form of a zero voltage actuator or an excess current actuator. The armature of the electromagnet drops in the event of a voltage failure or is attracted if an excess current appears, thus disconnecting the switch. The switch can be turned back on again only after the voltage returns or normal current returns by the actuating device. A rocker is disposed on the narrow upper surface between the two pieces of the housing as the actuating member. The electromagnet and connecting members are disposed on the underside of the housing, a portion of the electromagnet being located between the two pieces of the housing. A support of an insulating material, is disposed in the housing upon which support connecting members are disposed.