Rotatable trip test assembly for molded case cirtuit breakers

Details Rotatable trip test assembly for molded case cirtuit breakers Rotatable trip test assembly for molded case cirtuit breakers

H - Electricity

01

H

306/325

H01H 71/12 (2006.01)

Patent

CA 2034345

A rotatable trip test assembly unit for molded case circuit breakers consists of a unitary plastic part that cooperates with the internal structure of the circuit breaker cover to provide return spring bias to the trip test button. The trip test assembly unit rotates about a pivot and strikes the circuit breaker trip bar to thereby articulate the circuit breaker operating mechanism and separate the circuit breaker contacts. The interaction between a cam-follower on the assembly unit and a cam-shaped piece within the circuit breaker cover automatically returns the trip test button to its initial position upon release.

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