Limiting circuit breaker equipped with an electromagnetic effect

Details Limiting circuit breaker equipped with an electromagnetic effect Limiting circuit breaker equipped with an electromagnetic effect

1990-06-27

1991-07-02

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335195, 335167, 200144R, H01H 7500

Patent

active

050293010

ABSTRACT:
A limiting circuit breaker comprises an electrodynamic repulsion contact system, and an electromagnetic latch arranged in the vicinity of the contact system, and electrically insulated from the latter. Actuation of the latch to the active position results from the action of the electromagnetic field due to a short-circuit current flowing in the pole, so as to temporarily keep the movable contact open after repulsion. The latch is equipped with a pair of ferromagnetic brackets, and with a spring blade to return to an inactive position.

REFERENCES:
patent: 3754108 (1973-08-01), Marot et al.
patent: 4042895 (1977-08-01), Wafer et al.
patent: 4408111 (1983-10-01), Domhan et al.
patent: 4910485 (1990-03-01), Bolongeat-Mobleu

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