A fuse element assembly has been disclosed. The fuse element assembly includes a fuse element having a pair of side edges and at least one weak spot between the side edges. The fuse element assembly also includes an arc-quenching material attached locally to the fuse element adjacent the weak spot.

A protective element includes: a fuse element which includes a blowout portion between a first end portion and a second end portion, and is energized in a first direction; and a case having a housing portion housing the blowout portion therein. A length in a thickness direction in a cross section perpendicular to the first direction of the blowout portion is less than or equal to a length in a width direction perpendicular to the thickness direction in the cross section. A first wall surface and a second wall surface that face each other in the thickness direction are provided in the housing portion. A distance in the thickness direction between the first wall surface and the second wall surface is 10 times or less the length in the thickness direction of the blowout portion.

A protective element includes: a fuse element which includes a blowout portion between a first end portion and a second end portion, and is energized in a first direction; and a case having a housing portion housing the blowout portion therein. A length in a thickness direction in a cross section perpendicular to the first direction of the blowout portion is less than or equal to a length in a width direction perpendicular to the thickness direction in the cross section. A first wall surface and a second wall surface that face each other in the thickness direction are provided in the housing portion. A distance in the thickness direction between the first wall surface and the second wall surface is 10 times or less the length in the thickness direction of the blowout portion.

The present disclosure discloses a miniature super surface mount fuse, comprising: a fuse element provided with a low overload fusing point and at least two high breaking capacity fusing points connected in series with the low overload fusing point and respectively arranged on two sides of the low overload fusing point, at least two cavity plates provided with cavities, the low overload fusing point and the high breaking capacity fusing points being located at corresponding positions of the cavities; the present disclosure further provides a manufacturing method for a surface mount fuse; the miniature super surface mount fuse of the present disclosure can provide the protection for the civil consumer electronic circuit under various overload conditions without the occurrence of safety hazards such as smoking or cracking of the housing or explosion.

An example electrical interruption switch includes a casing, surrounding a contact unit defining current path therethrough. The contact unit has a first and second connection contact and a separation region. A current supplied to the contact unit via the first connection contact can be discharged therefrom via the second connection contact, or vice versa. The separation region includes a tubular element, an axial direction of which runs along an axis X, wherein the tubular element is separable into two parts along a plane perpendicular to the axis X, whereby the current is interrupted between the first and the second connection contact, wherein the tubular element has two opposite end regions along the direction of extent of the axis X, characterized in that the tubular element has a minimum wall thickness, which increases in each case in the direction of the end regions, in a region between the end regions.

The present disclosure provides a fuse for protecting a 48V battery system of an electric vehicle, which includes a shell and a fuse element arranged in the shell, wherein the fuse element includes a fusing portion, and a first heating portion and a second heating portion which are connected to two sides of the fusing portion, respectively and the fusing portion has a width greater than that of the first heating portion and the second heating portion, the fusing portion includes at least one hole which partitions the fusing portion into constricted portions each having a width less than that of the first heating portion or the second heating portion, and the fusing portion, the first heating portion and the second heating portion are formed integrally.

A power fuse for protecting an electrical load subject to transient load current cycling events in a direct current electrical power system is provided. The power fuse includes at least one fuse element assembly that includes an elongated planar substrate, a plurality of fusible weak spots, and a conductor. The weak spots are formed on the substrate and are longitudinally spaced from one another on the substrate. The conductor is separately provided from the substrate and the weak spots. The conductor includes a solid elongated strip of metal having no stamped weak spot openings therein and therefore avoiding thermal-mechanical fatigue strain in the conductor when subjected to the transient load current cycling events. The solid elongated strip of metal includes coplanar connector sections that are mounted to respective ones of the weak spots and obliquely extending sections bent out of plane of the connector sections to extend above the substrate.

A vehicle includes an electrified propulsion system powered by a traction battery. The vehicle also includes an electrical distribution system (EDS) to pass current to and from the traction battery. The EDS is provided with at least one flexible electrical distribution component (FEDC) including a plurality of individual conductor paths. At least one of the individual conductor paths defines a typical width and a reduced width narrowed portion sized to operate as a fuse and thereby break an electrical circuit of the at least one individual conductor path in response to heat generated from conducting an electrical current greater than a predetermined threshold.

A fuse includes an outer cartridge body, an inner cartridge body provided inside the outer cartridge body, a fuse core provided inside the inner cartridge body, two inner copper bushes provided at and covering two open ends of the outer cartridge body, and two outer copper bushes provided at and covering the two inner copper bushes and two open ends of the outer cartridge body. One end of one inner copper bush is a first open end, and the other end is a first closed end. An end face of the first closed end has a first opening. The first open end of the inner copper bush and the outer cartridge body form an interference fit. An end of the fuse core extends and passes through the first opening, and is fixed to the end face of the first closed end.

Disclosed is a thin-film micro-fuse assembly having: a substrate; an insulating layer disposed on the substrate, the insulating layer comprising silicon dioxide; a conductor disposed on the insulating layer, the conductor forming: an inlet terminal, an outlet terminal and a fuse element between the inlet terminal and the outlet terminal, the inlet terminal and the outlet terminal widthwise converging toward the fuse element, and the fuse element having a first thickness and a first width that is between 1 and 5 times the first thickness.