Current limiting circuit breaker with pivoting contact arm

Details Current limiting circuit breaker with pivoting contact arm Current limiting circuit breaker with pivoting contact arm

1978-10-16

1980-10-07

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335194, H01H 7710

Patent

active

042271614

ABSTRACT:
A current limiting circuit breaker includes two parallel pivoting contact arms carrying contacts at the ends thereof. The upper arm is double pivoted and is operated by a mechanism between open and closed positions. A magnetic drive slot motor device surrounds the lower arm and operates during extreme overcurrent conditions to draw the lower arm down and aid in rapidly separating the contacts. An arm positioning assembly is spring loaded to bias the lower arm toward a closed circuit position and provide contact closing force, the upper limit of travel being set by a rod extending through the end of the lower contact arm to abut against the slot motor.

REFERENCES:
patent: 3343108 (1967-09-01), Murai
patent: 3469216 (1969-09-01), Shiraiski
patent: 3815059 (1974-06-01), Spoelman

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