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Definition Circuit Breaker Power Bus Panel

An inclosure which includes two or more bus bar and is designed to mount and protect two or more circuit breaker, but does not include the circuit breakers. It may include a cover from which the actuators protrude and/or a trim with a door(s). For items which include combinations of different electrical devices such as switches, jacks, fuse holders, circuit breakers, terminal boards and the like, see distribution box. For items designed to mount but which do not include electrical devices, see junction box.