Patent ID: 6297939
Filing Date: 2001-10-02
Classification: H02H

Abstract:
A circuit breaker system, comprising:a plurality of circuit breakers, arranged in layers, each layer being coupled to the next layer in series; andat least some of the circuit breakers including an interlock interface, the interlock interface further including,a first connection configured to be coupled to at least one of the circuit breakers,an output configured to provide an interlock signal,a first input configured to be coupled to the output of another interlock interface on a different layer, anda second input configured to be coupled to the output of another interlock interface on the same layer; andwherein the interlock interface selectively controls tripping of the circuit breaker that is coupled to the series circuit and is in the layer closest to a fault and meets a fault condition and the interlock interface selectively controls maintaining circuit breakers, coupled to the series circuit that are not in layers closest to the fault, in a closed state.