Current limiting fuse

A current limiting fuse comprising at least one rigid electrically insulating member having a plurality of rupturable vents, the member having opposite open ends, an outer casing having opposite open ends surrounding the member and spaced therefrom, at least the interior portion of the casing being electrically insulating, the member and the outer casing defining a narrow space therebetween forming an arc constrictor, a dielectric liquid substantially filling the narrow space, at least one fuse element, each such fuse element immersed in the dielectric fluid and extending longitudinally adjacent the member, a pair of metallic end caps with associated electrical terminals, both the member and the casing having opposite open ends fitted tightly within the metallic end caps and associated electrical terminals, the casing insulated electrically from at least one of the electrical terminals, and each opposite end of the fuse element in electrical connection with its associated electrical terminal.

A current limiting fuse comprising at least one rigid electrically insulating member having a plurality of rupturable vents defining a narrow space therein forming an arc constrictor, a dielectric liquid substantially filling the narrow space, the member having opposite open ends, at least one fuse element, each such fuse element immersed in the dielectric fluid and extending longitudinally adjacent the member, an outer casing having opposite open ends surrounding the member and spaced therefrom, defining a plasma cooler space, at least the interior portion of the casing being electrically insulating, a pair of metallic end caps with associated electrical terminals, both the member and the casing having opposite open ends fitted tightly within the metallic end caps and associated electrical terminals, the casing insulated electrically from at least one of the electrical terminals, and each opposite end of the fuse element in electrical connection with its associated electrical terminal.