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.

Provided are trimmed parallel element protection devices. Some protection devices may include a substrate and first and second terminals at opposite ends of the substrate. The protection devices may further include a first fusible and a second fusible element extending between the first and second terminals, wherein at least one of the first and second fusible elements includes a trimmed portion.

A relay unit includes: bus bars serving as conductive paths; relays including contact portions for turning on and off energization of the bus bars, and a plurality of terminals connected to the contact portions, the bus bars being fixed to the terminals; and heat dissipation members that are fixed to the terminals of the relays, receive heat of the terminals, and dissipate the heat.

A high-capacity miniature cartridge fuse is provided. The fuse includes a housing, a fusible element, and first and second ferrules fabricated from aluminum alloy. The aluminum alloy ferrules is fabricated to withstand high pressure generated inside the housing as a result of arcing and to stay in place after repeated temperature and pressure changes caused by at least one of i) current or ii) arcing during short circuit events. The aluminum alloy plated with a first metal plating fabricated from a first metal different from the aluminum alloy and a second metal plating fabricated from a second metal different from the first metal, the second metal plating overlaying the first metal plating. Each of the first and second ferrules includes a side wall and an end wall, wherein the end wall includes a boss extending toward an interior of the housing.

A high-capacity miniature cartridge fuse is provided. A fuse includes a cylindrical housing, a fusible wire, and first and second deep-drawn ferrules fabricated from aluminum alloy. The aluminum is plated with nickel. The ferrule includes a side wall and an end wall. The side wall surrounds the first or second end of the housing, and has a thickness of approximately 0.50 mm or less. The end wall includes a boss extending toward an interior of the housing, and has a thickness greater than the thickness of the side wall.

A fuse including an electrically insulating, tubular fuse body, electrically conductive first and second endcaps disposed over opposing ends of the fuse body, a fusible element extending through the fuse body and connecting the first endcap to the second endcap, the fusible element having a central portion adapted to melt and separate upon an overcurrent condition in the fuse, and first and second arc barriers disposed on the fusible element on opposing sides of the central portion, the first and second arc barriers formed of a silicone composition that includes an arc quenching filler suspended in a silicone resin.

A signaling device adapted to be electrically coupled to an electric potential applied to terminals of a fuse element or to clips of a fuse holder. The signaling device is adapted to signal to the outside at least one property of the fuse element. In addition, the signaling device includes at least one transmission layer having an electrically controllable transmission factor.

Provided are trimmed parallel element protection devices. Some protection devices may include a substrate and first and second terminals at opposite ends of the substrate. The protection devices may further include a first fusible and a second fusible element extending between the first and second terminals, wherein at least one of the first and second fusible elements includes a trimmed portion.

A fuse holding element includes a pair of holding branches facing each other and extending substantially parallel to a central plane of the fuse holding element and a linking part on which the holding branches are attached. The holding branches define a receiving location for a conducting end of a cylindrical fuse. The linking part has a fastener releasably cooperating with a complementary part of a conducting bar.

A fuse holding element includes a pair of holding branches facing each other and extending substantially parallel to a central plane of the fuse holding element and a linking part on which the holding branches are attached. The holding branches define a receiving location for a conducting end of a cylindrical fuse. The linking part has a fastener releasably cooperating with a complementary part of a conducting bar.