9 Circuit breakers; circuit breakers components; accessories for circuit breakers, namely, cable connectors, protection units, current sensors, shunt opening releases, shunt closing releases, shunt trips and electrical controlling devices in the nature of under voltage circuit-tripping devices, opening solenoids, auxiliary contacts, bell alarms, under voltage relays, alternate terminals, alternate lugs, programming units, signaling units, diagnosis units, locking devices, interlock devices, fixing accessories, contact covers, insulating barriers, accessory connectors, mounting rails, spring-charging motor operators