Instantaneous trip device of a circuit breaker

Details Instantaneous trip device of a circuit breaker Instantaneous trip device of a circuit breaker

H - Electricity

01

H

306/214, 306/284

H01H 73/18 (2006.01) H01H 9/50 (2006.01) H01H 71/12 (2006.01)

Patent

CA 2040863

A limiting circuit breaker with a molded case comprises an overpressure actuator which, when an overpressure occurs in the arc extinguishing chamber due to the action of an arc drawn by the electrodynamic repulsion of the contacts, brings about actuation by a piston, subjected to this overpressure, of the circuit breaker trip bar. The overpressure actuator forms an almost leaktight assembly.

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