… Electrical apparatus for switching or protecting electrical circuits, or for making … connections to or in electrical circuits (for example, switches, relays, fuses, surge suppressors, plugs, sockets, …
Explanatory notes
… etc., switches of a kind used in domestic electrical wiring (e.g., tumbler switches, lever operated switches, … and breaking electrical circuits, which automatically reset without a mechanical locking device or hand operation. They … normally consist of a device in which a length of fuse wire is incorporated (or can be incorporated) so that, when …