Molded case circuit breaker interlock arrangement

Details Molded case circuit breaker interlock arrangement Molded case circuit breaker interlock arrangement

H - Electricity

01

H

306/278

H01H 9/26 (2006.01)

Patent

CA 1328898

MOLDED CASE CIRCUIT BREAKER INTERLOCK ARRANGEMENT ABSTRACT OF THE DISCLOSURE Molded case circuit breakers connected to two dif- ferent sources of power within an industrial application are interlocked to prevent one circuit breaker from being turned on while the other circuit breaker is already on. The circuit breakers include a molded plas- tic crossbar arranged for rotation within the circuit breaker enclosure. The interlock arrangement consists of a pivoted bell crank assembly including a pair of pivotally mounted insulative posts on either end of the bell crank. A corresponding cam integrally formed on the circuit breaker crossbar is in interference with one of the upstanding posts when the circuit breaker is in the "OFF" position and is out of interference with the upstanding post when the circuit breaker is in its "ON" condition.

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