… Electrical apparatus for switching or protecting electrical circuits, … circuits (for example, switches, fuses, lightning arresters, voltage limiters, surge suppressors, plugs and …
Explanatory notes
… circuits (for example, switches, fuses, lightning arresters, voltage limiters, surge suppressors, plugs and … switches specialised for high tension circuits. They are usually of a complex and robust construction having special devices to prevent arcing, and they may have multiple contacts or be remote …