Circuit breaker with rubber shock absorbers in outer poles

Details Circuit breaker with rubber shock absorbers in outer poles Circuit breaker with rubber shock absorbers in outer poles

H - Electricity

01

H

306/283

H01H 3/60 (2006.01) H01H 71/10 (2006.01)

Patent

CA 1329405

RUBBER STOPS IN OUTSIDE POLES Abstract of the Invention A molded case circuit breaker is provided with rubber stop assemblies disposed between the con- tact assemblies adjacent the outside poles and the cover portion of the housing. The rubber stop assem- blies are disposed such that they prevent the contact assemblies from damaging the cover. The stop assem- blies include a dual purpose U-shaped bracket having two parallel sets of arms. One set of arms is pro- vided with aligned apertures at the free ends for re- ceiving a pin which defines a pivot point for the crossbar assembly. The other set of arms is also provided with aligned apertures at the free end for receiving a metal pin for carrying a cylindrical shock absorber assembly. The shock absorber assembly is mounted adjacent outside poles above the contact carrier but spaced away from the inside of the cover of the circuit breaker. Thus, when the contact arm is opened, it will stop against the shock absorber and not damage the circuit breaker cover. The center pole is provided with an adjacent shock absorber, mounted between a pair of spaced-apart sideplates, vertically disposed and secured to the frame of the circuit breaker. The center pole shock absorber is spaced away from the operating mechanism to prevent the center pole contact assembly from contacting it.

605732

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