The invention relates to an use of a melting conductor (1) for a DC fuse (2) and a high-voltage high-power fuse (2) (HH-DC fuse), wherein the melting conductor (1) comprises an electrically conductive melting wire (3), wherein the melting wire (3) comprises at least two overload narrow sections (4) in the form of a cross-sectional constriction, wherein, preferably between the two immediately successive overload narrow sections (4) a first layer (7) comprising solder and/or surrounding the outer shell surface (6) of the melting wire (3) circumferentially at least in some areas, preferably completely, is provided in at least one first section (5), and wherein a second layer (9) surrounding the outer shell surface (6) of the melting wire (3) circumferentially at least in some areas, preferably completely, is provided adjacent to each of the overload narrow sections (4) in a respective second section (8).

A gauge for determining the operational viability of a device that requires that a consumable or otherwise erodible material for safe and/or efficient operation reside along or near an inside wall of a cavity, for example, a fuse tube containing an ablative arc-extinguishing material as found in a fused cutout, is provided, which gauge measures whether a sufficient quantity of the material to be consumed remains.

A gauge for determining the operational viability of a device that requires that a consumable or otherwise erodible material for safe and/or efficient operation reside along or near an inside wall of a cavity, for example, a fuse tube containing an ablative arc-extinguishing material as found in a fused cutout, is provided, which gauge measures whether a sufficient quantity of the material to be consumed remains.

A gauge for determining the operational viability of a device that requires that a consumable or otherwise erodible material for safe and/or efficient operation reside along or near an inside wall of a cavity, for example, a fuse tube containing an ablative arc-extinguishing material as found in a fused cutout, is provided, which gauge measures whether a sufficient quantity of the material to be consumed remains.

The present disclosure describes an electric fuse, comprising a melting member contained within an insulated cylindrical casing, which is sealed at each end by an electrically conductive cover electrically connected to said melting member. On each end of the fuse casing, between said casing and said cover, is installed an electrically conductive and plastically deformable separating barrier. On the side of separating barrier facing the interior of the casing is affixed a layer of an elastic and electrically insulating material. The melting member is on each end portion of said fuse electrically connected with each cover via said separating barrier and proceeds through said electrically insulating layer. Within said layer the melting member has at least one bend, by which it is anchored therein and secured against being pulled out.

A thermal cutoff includes a first fusible element, a second fusible element, and a closed cavity bounded by a housing having an open end, a cover plate, and a sealant. The two ends of the first fusible element and the two ends of the second fusible element are connected in parallel to a first electrode and a second electrode, respectively. The first fusible element and the second fusible element are provided in the closed cavity. A direction extending from a closed end to the open end of the housing is defined as a vertical direction. The first fusible element and the second fusible element are vertically arranged. The thermal cutoff has a vertical configuration and thus in its entirety has an elongated shape to meet corresponding application requirements.

A thermal cutoff at least includes a current-carrying fusible element having two ends connected to a first electrode and a second electrode. The current-carrying fusible element is provided in a closed cavity bounded by a housing having an opening at one end, a cover plate, and a sealant. The thermal cutoff further includes a first lead wire and a second lead wire each wrapped by an insulating sheath. One end of the first lead wire and one end of the second lead wire are electrically connected to the first electrode and the second electrode. The sealant is filled in the opening of the housing, covers an electrical joint between the first lead wire and a first electrode plate and an end of the first lead wire, and also covers an electrical joint between a second electrode plate and the second lead wire and an end of the second lead wire.

A fuse includes a case member that has a rectangular parallelepiped shape and has a space, a lid member that closes an upper opening of the case member and closely adheres to the case member, a fuse-element disposed in the space, and a pair of terminals, whose distal ends are exposed to outside, connected to both ends of the fuse-element. The case member includes a plurality of first engaging projections formed on a first side wall, and a plurality of second engaging projections formed on a second side wall. The lid member includes a plurality of first engagement recesses formed in a first contact wall and fitted respectively to the plurality of first engaging projections, and a plurality of second engagement recesses formed in a second contact wall and fitted respectively to the plurality of second engaging projections.

A fuse includes a case member that has a rectangular parallelepiped shape and has a space, a lid member that closes an upper opening of the case member and closely adheres to the case member, a fuse-element disposed in the space, and a pair of terminals, whose distal ends are exposed to outside, connected to both ends of the fuse-element. The case member includes a plurality of first engaging projections formed on a first side wall, and a plurality of second engaging projections formed on a second side wall. The lid member includes a plurality of first engagement recesses formed in a first contact wall and fitted respectively to the plurality of first engaging projections, and a plurality of second engagement recesses formed in a second contact wall and fitted respectively to the plurality of second engaging projections.

A fuse and a production method therefor. The fuse includes upper and lower insulating layers provided with terminal electrodes, and a fuse element between the upper and lower insulating layers. The fuse further includes a functional layer provided between the fuse element and the insulating layers. The functional layer includes a substrate and an arc extinguishing material uniformly or substantially uniformly distributed in the substrate; the arc extinguishing material includes a sealed cavity; the substrate includes low temperature co-fired ceramic powder, aerosol silicon oxide, silicon oxide, inert resin, phosphoric acid, and phosphate ester polyester; the content of the arc extinguishing material is 1-50 wt %. The fuse overcomes the shortcomings of phenomena such as deformation, bending, and defects occurring to a fuse element caused by the shrinkage mismatch of the fuse element with a buffer layer and an arc extinguishing layer in a sintering process.