Apparatus and instruments for transporting, conducting, switching, transforming, accumulating, regulating, filtering, measuring, signaling, monitoring or controlling electric current, namely, circuit breakers, electric relays, protection relays, transformers, static converters, resistances, contactors, transducers, voltage surge protectors, electric connectors, power supplies, uninterrupted electric power supplies, electric batteries, chargers for batteries, programmable logic controllers, el...