9 Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, circuit breakers, switches, distribution boards; components for circuit breakers, switches and distribution boards; accessories for circuit breakers, switches and distribution boards, namely, protection units, current sensors, shunt opening releases, shunt closing releases ,opening solenoids ,auxiliary contacts ,bell alarms ,under voltage relays ,alternate terminals ,alternate lugs ,programming units ,dialog units, signalling units, diagnosis units, fixed adapters, electric operators, rotary handles, locking devices, interlock devices, distribution boards, fixing accessories, contact covers, insulating barriers, ambient protection devices, accessory cables and connectors