Patent ID: 7936239
Filing Date: 2011-05-03
Classification: H01H

Abstract:
1. A breaker interlock system, comprising: an electronic trip unit for a multi-phase circuit breaker; a multi-phase circuit breaker receptive of the electronic trip unit, the multi-phase circuit breaker being closable in response to the electronic trip unit being assembled thereto and the multi-phase circuit breaker being non-closable in response to the electronic trip unit not being assembled to the multi-phase circuit breaker, the interlock system being configured to prevent disassembly of the electronic trip unit from the multi-phase circuit breaker when the multi-phase circuit breaker is in a closed configuration, the multi-phase circuit breaker having a plurality of solenoids, each of the plurality of solenoids being in operable communication with the multi-phase circuit breaker to trip the multi-phase circuit breaker on command, a first of the plurality of solenoids being responsive to a signal from the multi-phase circuit breaker via the electronic trip unit, and a second of the plurality of solenoids being responsive to an externally supplied signal from a source other than the electronic trip unit; wherein the multi-phase circuit breaker further includes a trip paddle, the multi-phase circuit breaker being non-closable in response to the trip paddle being in a first paddle position, and being closable in response to the trip paddle being in a second paddle position; and wherein the multi-phase circuit breaker further comprises a trip pin in operable communication with the trip paddle such that movement of the trip pin from a first pin position to a second pin position permits movement of the trip paddle from the first paddle position to the second paddle position in response to a bias applied thereto.