Molded case circuit breaker multi-pole crossbar assembly

Details Molded case circuit breaker multi-pole crossbar assembly Molded case circuit breaker multi-pole crossbar assembly

1992-12-18

1994-02-15

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335202, H01H 7500

Patent

active

052870774

ABSTRACT:
A modular crossbar arrangement for molded case circuit breakers allows a plurality of contact arm assemblies to be interconnected from a single modular unit. To provide increased acceleration to the movable contact arms a contact arm accelerator lever interfaces with the contact arm and crossbar assembly. To promote further acceleration of the movable contact arms to their closed positions, the movable contact arms in a multi-pole circuit breaker are staggered with respect to their rotational alignment within each pole on the crossbar assembly.

REFERENCES:
patent: 4383146 (1983-05-01), Bur
patent: 4574170 (1986-03-01), Abe et al.
patent: 4600908 (1986-07-01), Uchida et al.
patent: 4882557 (1989-11-01), Harper

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