Circuit breaker safety interlock unit

Details Circuit breaker safety interlock unit Circuit breaker safety interlock unit

H - Electricity

01

H

H01H 9/24 (2006.01) H01H 9/28 (2006.01) H01H 71/10 (2006.01) H01H 71/12 (2006.01) H01H 73/02 (2006.01) H01H 71/46 (2006.01)

Patent

CA 2059918

41PR-6778 CIRCUIT BREAKER SAFETY INTERLOCK UNIT ABSTRACT OF THE DISCLOSURE The position of the contacts within industrial-rated circuit breakers is externally ascertained by means of an auxiliary switch-contact position verifier accessory. A viewing aperture in the circuit breaker accessory cover provides visual access to a color-coded shutter that forms part of the auxiliary switch accessory and operates off the circuit breaker crossbar assem- bly. A safety interlock unit attached to the exterior surface of the circuit breaker cover interacts with the shutter to pre- vent the circuit breaker from being turned on. The interlock unit also interacts with the circuit breaker trip-test button to articulate the circuit breaker operating mechanism.

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