Narrow multi-pole circuit breaker having inertia actuated...

Details Narrow multi-pole circuit breaker having inertia actuated... Narrow multi-pole circuit breaker having inertia actuated...

H - Electricity

01

H

306/59

H01H 73/00 (2006.01) H01H 71/10 (2006.01)

Patent

CA 1044733

NARROW MULTI-POLE CIRCUIT BREAKER HAVING INERTIA ACTUATED OVERTRAVEL FOR LATCH RELEASE Abstract of the Disclosure. A plurality of single pole circuit breakers stacked side-by-side are interconnected by a tie rod connecting the magnetic armatures of their respective instantaneous trip means. When one pole is caused to trip because of a fault condition, a driving formation on the releasable cradle of the faulted pole delivers a hammerlike blow to a cam means on the magnetic armature. The energy imparted to the armature by this blow causes the latch carried thereby to move in the tripping direction substantially beyond the point required for releasing the cradle latch in the faulted phase. This added movement assures that the tie rod shall transmit sufficient motion to all non- faulted poles to cause tripping thereof.

244877

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