Abstract: The invention concerns switchable serial terminals with a switching lever gripping component consisting of an insulating material. It is suggested that one provide the gripping component with two visual surfaces--of which in each of the two switching positions of the switching lever and in an alternating manner--one visual surface is turned toward the viewing direction of the operator and, in the same switching position, the other visual surface is turned away from the viewing direction of the operator.

Abstract: A multi-phase switch assembly (10) has a base (12) and an operating mechanism (14). The base (12) and operating mechanism (14) are formed to fit together as an integrated unit by sliding engagement of the base (48) of framework (32) between bosses (30,31) of the base (12) of the switch. Fastener holes (74,76) extend through both the base (12) of the switch and the operating mechanism (14) so that the entire switch assembly (10) can easily be mounted as a unit.

Abstract: A switching device in a system of switching devices, which can be coupled to mountable switching, auxiliary switching, or signal devices. In the case of a cylindrical, manually operated part, disposed in the housing, having a selector, a coupling element pair comprising a jaw-shaped coupling element and a cone-shaped coupling element are provided on the cylindrical part in the direction of the switching axis on a mounting side, the pair of coupling elements being movable behind a housing slot, and being forced in engagement connection with each other and arranged in a housing slot on the surface of a device to be attached.

Abstract: A circuit breaker interlocking mechanism characterized by a pair of circuit breakers connected to different power supply sources in comprising a locking member pivotally mounted between the circuit breakers for preventing one circuit breaker from being actuated when the other is in a preselected operating position.