Abstract: An electromagnetic switching device (2) with restricted guidance, in which the closure contacts do not come into contact when the break contact is welded or fixed. An elastically resilient transmission lever (10) is provided to establish the effective connection between the armature (8) and the contact support (12) extending at a distance from and parallel to the armature.

Abstract: A arcing chamber housing is disclosed for a circuit breaker with a double turning contact breaker. The arcing chamber housing (1) is composed of two housing modules (2, 3) and an extinguishing chamber (19) is arranged in the area of the fixed contact pieces (6, 7) to extinguish the arcs which are formed between the contact pieces of the double turning contact breaker. In order to obtain a arcing chamber housing (1) which is easy and economical to produce, with extinguishing chambers (19) which have a reproducible extinguishing behavior once the arcing chamber is assembled, the two housing modules (2, 3) are substantially L-shaped parts whose inner marginal surfaces (4, 5) face each other. The first parts (17, 18) of the housing, which correspond to the first branches of the L-shaped housing modules (2,3), are designed as extinguishing chambers (19). Also disclosed are the housing modules (2, 3) used to produce such a arcing chamber housing.

Abstract: A locking-type actuator for a rotary switch, in which a base plate (8) is slid over the actuating shaft (18) of the rotary switch (2) and secured to the rotary switch housing (6). A twist handle (10) secured so as to be torsionally fixed to the actuating shaft (18) is provided with at least one locking opening (32) for shackle connectors to be inserted. Displaceably supported in the twist handle (10) in a direction perpendicular to the actuating shaft axis (36) is a stopper (34), which is able to be externally manipulated to block or release the locking opening (32), and displaceably supported in the twist handle (10) parallel to the actuating shaft axis, is a locking pin (48), which is able to be actuated against a spring resilience.