Electrical switching device

Details Electrical switching device Electrical switching device

2007-01-09

2007-01-09

Friedhofer, Michael (Department: 2832)

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

C200S410000

Reexamination Certificate

active

11196408

ABSTRACT:
An electrical switching device, in particular a circuit breaker, is disclosed. In order to shorten the opening times of a switching device such as this, a snap-action system is used. The system interacts with the moving contact piece, of an electrical switching device having a switching shaft and having a moving contact piece which can be operated by the switching shaft, such that the moving contact piece is automatically moved to a switched-off position after opening of the contact by electrodynamic forces in the event of a short circuit or the like. The contact load on the moving contact piece decreases as the opening increases. This may result in better short-circuit current limiting. The overall production costs may be considerably reduced.

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