Patent ID: 7439462

Claim:
A system comprising: a breaker interlock device adapted to mechanically resist switching a handle of a first circuit breaker from an OFF position to an ON position when a handle of a second circuit breaker is in an ON position, said first circuit breaker adjacent to said second circuit breaker, said breaker interlock device comprising: a stationary plate releasably attachable to said first circuit breaker and/or said second circuit breaker, said stationary plate defining a fastener opening adapted to receive a fastener, said fastener adapted to releasably attach said stationary plate to said first circuit breaker and/or said second circuit breaker, said stationary plate at least defining a portion of a breaker handle opening adapted to receive said handle of said first circuit breaker, said stationary plate defining a slidable plate receiving slot, said slidable plate receiving slot entirely defined by an opening in a flange of said stationary plate; and a slidable plate attachable to said stationary plate via said slidable plate receiving slot, said slidable plate adapted to, when in a first slidable position, resist movement of said handle of said second circuit breaker from an OFF position to said ON position, said slidable plate adapted to, when in said first slidable position, not resist movement of said handle of said first circuit breaker from said OFF position to said ON position, said slidable plate adapted to, when in a second slidable position, not resist movement of said handle of said second circuit breaker from said OFF position to said ON position, said slidable plate adapted to, when in said second slidable position, resist movement of said handle of said first circuit breaker from said OFF position to said ON position.