Molded case circuit breaker contact

Details Molded case circuit breaker contact Molded case circuit breaker contact

1993-03-04

1994-05-17

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335147, 200147R, H01H 7500

Patent

active

053131800

ABSTRACT:
A movable contact bridge of a molded case limiting circuit breaker is supported by a bar by a system of springs enabling opening with electrodynamic repulsion. The contact bridge cooperates with stationary contacts rigidly secured to current input conductors in the shape of half-loops. An anvil is adjoined to the rear of the stationary contacts to increase the closing impact effect of the contact bridge and prevent contact resistance dispersions. The anvil is made of ferromagnetic material increase the magnetic field for blowout of the arc to the extinguishing chambers.

REFERENCES:
patent: 4470227 (1984-09-01), Link et al.
patent: 4910485 (1990-03-01), Bolongeat-Mobleu et al.
patent: 4916421 (1990-04-01), Pardini et al.
patent: 5029301 (1991-07-01), Nebon et al.

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