Molded case circuit breaker insulated armature latch arrangement

Details Molded case circuit breaker insulated armature latch arrangement Molded case circuit breaker insulated armature latch arrangement

1993-06-07

1994-03-15

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 23, H01H 7512

Patent

active

052949010

ABSTRACT:
An electric circuit breaker operating mechanism includes an insulated armature latch which prevents deleterious arc formation between the operating mechanism cradle and the armature latch surface when the circuit breaker contacts are separated under overcurrent circuit conditions. The insulated armature latch carries a tolerance take-up spring which interacts between the operating mechanism cradle and the circuit breaker trip bar assembly to insure free travel of the operating cradle during contact separation.

REFERENCES:
patent: 2844689 (1958-07-01), Middendorf
patent: 3162739 (1964-12-01), Klein et al.
patent: 3246098 (1966-04-01), Hall
patent: 3288965 (1966-11-01), Klein
patent: 3421123 (1969-01-01), Johnson et al.
patent: 3467920 (1969-09-01), Hall et al.
patent: 4481491 (1984-11-01), Heft et al.
patent: 4725800 (1988-02-01), Grunert et al.

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