Contact arrangement for a withdrawable power circuit breaker

摘要

In the case of power circuit breakers which are withdrawable from switching installations, problems relating to the structural depth, the door seal in the case of a tube which is moved by the door, in the case of interlocks and in the articulation on the circuit breaker occur as a result of the different positions of the withdrawable unit. Furthermore, the entire insertion force is transferred to the circuit breaker. In order to overcome these difficulties, according to the invention, the power circuit breaker (1) is pushed into a predetermined final position and the on-test-off positions are reached via a contact frame (7), which has contact links (22) and is displaced horizontally by means of a drive lever (8). <IMAGE>