Abstract: A fuse comprising a body (20) encapsulating a fuse element (22), said body (20) including a baseplate (16) formed from a material having good thermal conductivity; a pair of elongate terminals (12) being connected at one end to the baseplate (16) through the intermediary of a layer of electrically insulating, heat conducting material (26) so as to extend away therefrom and project from said body (20); the fuse element (22) being provided between the terminals (12) within the body and being surrounded by an arc quenching material (24).

Abstract: A General-Purpose or Full-Range fuse in which one or more integral fuse elements are provided a first part of the length of each element serving as a current limiting device at high fault currents and a second part of the length of each element serving as an expulsion device at lower fault currents. In a preferred embodiment the first fuse part has a plurality of constrictions such as holes or notches disposed along its length and the second part has a single constriction located in a central region thereof, the length of the constriction in the second part exceeding the length of one of the constrictions in the first part.

Abstract: An automatic sectionalizer for a power transmission line in which the actuator (8) operatively engages the tube (1) directly to cause it to move towards an isolating position.