Instantaneous trip device of a circuit breaker

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

1991-04-16

1992-04-07

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 35, 200144R, H01H 7500

Patent

active

051031981

ABSTRACT:
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.

REFERENCES:
patent: 3631369 (1971-12-01), Menocal
patent: 4375022 (1983-02-01), Daussin et al.
patent: 4878144 (1985-10-01), Nebon

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