Abstract: Provided herein are protection devices, such as fuses. In some embodiments, a fuse may include a hollow body having first and second ends, each of the first and second ends having an end surface and a side surface extending from the end surface. The fuse may further include a fusible element disposed within a central cavity of the hollow body, the fusible element extending between the first and second ends. The fuse may further include an inner cap formed over at least one of the first and second ends. The inner cap may include a center portion in contact with the fusible element, and a plurality of spring legs extending from the center portion, wherein the plurality of spring legs is in contact with the side surface of the first and/or second ends. The fuse may further include endcaps surrounding the first and second ends.

Abstract: Provided herein are protection devices, such as fuses. In some embodiments, a fuse may include a hollow body having first and second ends, each of the first and second ends having an end surface and a side surface extending from the end surface. The fuse may further include a fusible element disposed within a central cavity of the hollow body, the fusible element extending between the first and second ends. The fuse may further include an inner cap formed over at least one of the first and second ends. The inner cap may include a center portion in contact with the fusible element, and a plurality of spring legs extending from the center portion, wherein the plurality of spring legs is in contact with the side surface of the first and/or second ends. The fuse may further include endcaps surrounding the first and second ends.

Abstract: Embodiments disclose a plug-in fuse element comprising a strip-shaped sheet metal part having a first end section, a second end section, and an interposed center section, wherein the first end section is a flat plug-in contact; the second end section is a connecting region configured to connect to a stranded conductor, and the center section is an overcurrent protection device. In some embodiments, a stranded conductor is connected on at least one end to a connecting region of at least one plug-in fuse element. In some embodiments, a wiring system includes at least one stranded conductor connected via a flat plug-in contact of a plug-in fuse element to a flat conductor. In some embodiments, a vehicle comprises the at least one wiring system.

Abstract: In a blade-type fuse (10) according to the present invention one of an upper casing (20) and a lower casing (30) includes a fixing post (30K), the other casing includes a through-hole (20K) through which the fixing post (30K) is passed, and also the flat terminal portion (41) includes a through-hole (40K) through which the fixing post (30K) is passed. The flat terminal portion (41) is formed bilaterally symmetrically about a vertical line passing through a center of the blade-type fuse (10), and vertically symmetrically about a horizontal line passing through the center of the blade-type fuse (10).

Abstract: The fuse assembly contains a first casing member with a first chamber, and a second casing member with a second chamber. An enclosed space is thereby formed by joining the first and second casing members together. A disconnection member is sandwiched between the first and second casing members. The disconnection member contains two electrodes and a fuse element between the two electrodes. Each electrode contains a first lateral section, a vertical section, and a second lateral section, jointly and integrally forming a C-like shape. The electrodes are positioned at two opposing ends of the second casing member and the fuse element is housed in the enclosed space. The enclosed space allows the fuse element to break off completely, thereby avoiding electrical arc and achieving enhanced usage safety.

Abstract: Overcurrent protection fuses with end cap assemblies amenable to automated manufacturing techniques and providing arc burn through resistance when the fusible element opens therein. The end cap assemblies may include washers having arc resistant compositions and may include single or double end cap constructions. Fuse rejection features may be formed in one of the end caps and may create an empty space in the end cap when assembled to a fuse body.

Abstract: Subminiature surface mount chip fuses include two part housings enclosing a fuse element and prefabricated end caps. The housing ends are shaped to restrict freedom of movement of the fuse element ends as the end caps are assembled to the housing. The end caps may include features to positively secure them in place and restrict relative movement of the end caps relative to the housing. Holes may be provided in the end caps that allow solder flow from a location exterior to the end caps to flow interior to the end caps to establish electrical connection with the fuse element.

Abstract: A semiconductor device includes an electric fuse and first and second large area wirings for applying a voltage to the electric fuse. The electric fuse includes a fuse unit which includes an upper-layer fuse wiring, a lower-layer fuse wiring, and a via connecting the upper-layer fuse wiring and the lower-layer fuse wiring, an upper-layer lead-out wiring which connects the upper-layer fuse wiring and the first large area wiring and has a bent pattern, and a lower-layer lead-out wiring which connects the lower-layer fuse wiring and the second large area wiring and has a bent pattern.

Abstract: A fuse module includes a wiring lug. The wiring lug includes a fuse clip member comprising a first pressure plate and a fuse clip, a lug box comprising a second pressure plate, and a securing member operably coupled to the lug box. The securing member operates between a first position and a second position to move the second pressure plate of the lug box with respect to the first pressure plate of the fuse clip member. The first pressure plate and the second pressure plate have a clamping relationship when the securing member is in the first position and have a non-clamping relationship when the securing member is in the second position.

Abstract: An electronic fuse (“E-fuse”) has a silicide filament link extending along a gap between polysilicon structures formed on a silicon substrate. The silicide filament link extends across diffusions formed in the gap. A P-N junction between terminals of the E-fuse provides high resistivity after programming (fusing) the silicide filament link.

Abstract: A fuse circuit assembly having a power distribution bar for distributing power from a power input and an electrical terminal integral with the power distribution bar. The electrical terminal has a fuse element that is configured to open at an over current threshold in order to prevent current flow therethrough. The electrical terminal portion also has a female terminal portion.

Abstract: A fuse element comprising a pair of female terminal portions into which the other pair of terminals is plugged, and which are disposed in parallel, and a blowout portion for coupling the pair of female terminal portions in a direction perpendicular to the direction in which the other pair of terminals is plugged. A slow blow fuse comprising the fuse element accommodated in a housing made of an insulating resin and is provided with the insertion ports in which the other pair of terminals is plugged into the pair of the female terminal portions in the opposed surfaces of the housing.

Abstract: A fuse system has both a non-serviceable fuse and a fuse terminal system for selectively installing a serviceable fuse. When installed, the serviceable fuse provides a current flow path parallel to the non-serviceable fuse.

Abstract: In one aspect of the present invention, subminiature fuses are soldered to a PCB via clips attached to the fuse end caps. The clips are physically attached to the PCB pads, enabling the fuse to be replaced if needed and providing thermal decoupling between the fuse and the heating sinking solder/PCB pads. The fuse and clips can also be picked and placed in one operation. In another aspect, improved fuse clips are provided that include tabs that separate the housing portions of the clips from the heating sinking solder/PCB pads. Such improved clips further enhance thermal decoupling. In a further aspect, an improved fuse is provided, in which the thermal decoupling tabs just described are provided directly with the fuse. In yet a further aspect, a thermally insulative fuse body is provided to further decouple the fuse element from its surroundings.

Abstract: A high power fuse includes a fuse body having a first terminal receptor including a first set of terminal legs and a second terminal receptor in spaced relation to the first terminal receptor. The second terminal receptor includes a second set of terminal legs. A fuse element is disposed between the first terminal receptor and the second terminal receptor. A first clamp-like member is mounted to the fuse body for applying a predetermined compression force against the first set of terminal legs and is configured to secure a first male terminal between the first set of terminal legs. A second clamp-like member is mounted to the fuse body for applying a predetermined compression force against the second set of terminal legs and is configured to secure a second male terminal between the second set of terminal legs.

Abstract: The blade fuse comprises a fuse body, a pair of significantly parallel blades connecting the fuse body and partially extending thereof to form electric connections, and a blade box for receiving the fuse body and the parallel blades.

Abstract: Fuse assemblies, system and kits and methods for assembling fuses include a fuse body that may be universally and interchangeably used with a plurality of different end fittings providing various fuse configurations for connection to electrical circuits. The highly adaptable fuse construction allows fuses to be manufactured and assembled using a reduced number of parts that need to be stocked in order to manufacture a complete line of fuses, and further to more quickly provide replacement fuses to customers.

Abstract: A pyromechanical disconnecting device having an improved electric current conductor rail. The electric current conductor rail includes a center section perpendicular to the path of a disconnecting tool, and a first and second side section extending perpendicular from the center section. The electric current conductor rail further includes a first and second end piece connected respectively to the first and second side sections apart from the center section. Each of the end pieces is connected along a fold perpendicular to the center section and includes a bore for receiving a fastener to attach the electric current conductor rail to a housing.

Abstract: A fuse includes: a first connecting terminal to be connected to a power source; a second connecting terminal to be connected to a load; a third connecting terminal to be connected to a relay control circuit; a fuse element having one end to be connected to the first connecting terminal; and a semiconductor relay directly mounted on the second connecting terminal. The semiconductor relay is a relay circuit switching between conducting and non-conducting states of a connection between its own drain and source electrodes, according to control signals inputted to the own gate electrode. The drain, source and gate electrodes are electrically connected to the other end of the fuse element, the second connecting terminal and the third connecting terminal, respectively. The first to third connecting terminals, the fuse element and the semiconductor relay are formed in an integral structure with a mold resin sealing portion.

Abstract: The invention provides a connection grid, comprising at least a pair of arms for fixing a fuse to the grid via its longitudinal ends. Each of the arms comprises a concave portion forming a cradle for receiving one of the longitudinal ends of the fuse. A method for producing this grid and a device for implementing this method are also provided.

Abstract: A compact fuse (1) for an automobile is provided. The fuse is formed by a fuse element (2) and an insulative housing (3) having a cutaway portion (8). The fuse element includes two base plates (4) and a melting portion (5) connecting the base plates. The melting portion is accommodated in the housing and parts of the base plates are exposed from the housing. The length of the base plate is the sum of the length (A) of the melting portion in the longitudinal direction of the base plate, the length (B) of a notch (4c) in the longitudinal direction of the base plate, and the length (C) of a cover supporting portion in the longitudinal direction of the base plate.

Abstract: A high-voltage current-limiting fuse comprises an elongated housing, an auto-centering connector centrally located about the elongated axis of the housing, and an elongated fusible element attached to the connector and secured along the elongated axis of the housing by the connector. The auto-centering connector is located about the elongated axis of the housing by a surface near one end of the housing, and the elongated conductive fusible element is connected to the connector and contained within the housing. The auto-centering connector is connected to an end of the fusible element, and mechanically located but electrically insulated relative to the housing.

Abstract: A shield for an electrical fuse, including an inner enclosure for housing the electrical fuse and a pair of outwardly flaring end portions extending from the opposite ends of the enclosure. The shield includes walls separating the inner enclosure from each of the outwardly flaring end portions, and a slot in the walls for the extension through that slot of at least a terminal portion of the electrical fuse. The shield may be made of a pair of identical housing pieces with mating tongue and groove elements disposed substantially along the peripheries of those pieces. Preferably, the tongue element of the housing pieces is disposed on the opposite side as the groove element of the housing piece. Each of the outwardly flaring ends, or alternatively the walls, may cooperatively form a seal to aid in preventing entry of moisture or dirt into the shield. A sealing portion that aids in forming the seal may comprise a resilient, compressible grommet.

Abstract: A connecting structure of a fuse link 21 and external terminals 22,23 is provided, wherein a terminal connecting nut 27 is screwed to a male threaded portion 26 projecting through a metallic fuse member 25 of the fuse link 21 retained in a setting portion 24 so as to secure the external terminal 22 to the metallic fuse member 25 in a conductive state and a terminal connecting bolt 28 is put through both of the external terminal 23 and the metallic fuse member 25 and is screwed to a female threaded portion 68 so as to secure the external terminal 23 to the metallic fuse member 25 in a conductive state.

Abstract: A surface mounting type electronic component such as a solid electrolytic capacitor is provided which comprises an electronic element, a safety fuse wire having a base end electrically connected to the electronic element, and a resin package enclosing the electronic element together with the fuse wire. The fuse wire also has a tip end which is exposed at a face of the resin package, and the face of the resin package is formed with a layer-like terminal in electrical connection with the tip end of the fuse wire.

Abstract: The present invention relates to compositions for use in forming resettable electronic circuit protection devices or fuses, methods of forming resettable fuses using the compositions, and resettable fuses formed from the compositions. Resettable fuse compositions according to the present invention include a mixture of the reaction product of polyethylene glycol and a diepoxide having a molecular weight of at least 18,000, solvent, conductive particles, and optional solvent volatility adjusters. In a preferred embodiment, resettable fuses according to the present invention are formed by screen printing the compositions directly onto printed electric circuits to form fuses. During current overload conditions, the temperature of the resettable fuse material rapidly increases due to resistive heating generated by excessive current flow through the conductive particle chains or pathways.

Abstract: A female fuse includes two female terminal portions and a fuse link with a skived region. The fuse link can have first and second ends with first and second pellet regions, each pellet region having a pellet hole therein, the first and second pellet regions being substantially symmetrically spaced on opposing sides of a central axis of the female fuse. Such a fuse link also includes first and second art-forming strips substantially symmetrically connecting the first and second pellet regions to one another, an interior portion of the arc-forming strips being substantially formed from a die section which is independent of the die section which forms the exterior shape of the female fuse. The female fuse terminals each have female-forming terminal plates and female-forming side plates, the terminal plates each having a spring portions, the spring portions being formable into contacting springs for the male terminals. A female fuse housing is also provided for the female fuse.

Abstract: A fuse 15 includes a housing 2 of an insulative resin having a lid 13 and a housing body 11, and a fuse body 1 having a melting portion formed between a pair of press-connecting terminals 4 and 5 arranged in a staggered manner, the fuse body being received in the housing 2. A sheathed wire is press-connected to and retained by the press-connecting terminals 4 and 5 of the fuse body 1, a portion of the sheathed wire, mounted between the press-connecting terminals 4 and 5, being cut, to thereby provide a fuse which has a simple construction, and can be easily mounted at an existing circuit, and also to provide a method of mounting such a fuse.

Abstract: A fuse having a pair of blade-type male terminals inserted into one opening of a fuse housing, which is made of synthetic resin, having a through hole. An element portion of the fuse is removably inserted into the other opening of the housing. The element portion includes a pair of leg portions fitted at their distal ends in element holding portions on the terminals. A fusible portion interconnecting proximal ends of the leg portions and one end of a connecting portion extending in a direction opposite to a direction of extending of the terminals. A heat-radiating plate portion is formed integrally on the other end of the connecting portion, and is covered with a cover. The cover is exposed exteriorly of the housing when the element portion is inserted into the housing.

Abstract: The fuseholder includes a current limiting fuse mounted within a fuse body and a lower contact and hinge assembly. The fuse body has contact assemblies mounted on each end thereof. The lower contact assembly on the fuse body is mounted on a hinge which is rotatably supported on an interchangeable cutout mounting. The current limiting fuse includes a fuse element spirally wound around a spider which extends the length of the fuse body. The fuse element includes a high current fusible element and a low current fuse element. The fusible element includes a plurality of spaced reduced areas and is supported on the spider by support surfaces which are located between adjacent reduced areas of the fusible element. An auxiliary wire also extends the length of the fuse body about the spider.

Abstract: A fuse is provided for protection of high current power distribution equipment, such as transformers. The fuse includes a dual function fuse element having a solder pot which permits fuse opening in response to long-term current overload conditions, and a minimum cross-section wire portion for short circuit opening. The fuse element is enclosed within a tube, and the tube is received within a housing. The tube is closed off on one end thereof with a dual size button, which size is selectable for reception into the housing.

Abstract: A fuse that includes a tubular member made from insulative material, end block portions made from insulative material, a spanner joining together the end block portions, terminals extending through openings in the end block portions, and a fusible element having ends connected to both of the terminals. Each of the terminals has an internal portion inside the tubular member to which a fusible element is attached, an external portion outside of the tubular member, and a middle portion between the internal and external portions and located within one of the openings of the end block portions.

Abstract: A fuse that includes an insulative housing, terminals extending through gaps in the bottom of the housing, and a fusible element having ends connected to both of the terminals. The housing includes a four-sided box that is closed at the top and open on the bottom, and a lid for closing the open bottom of the box that is smaller than the open bottom of the box so that, when the lid is in place, two gaps are formed in the bottom and at opposite ends of the housing.

Abstract: A substrate-type plug-in fuse to be directly inserted into slots of a pair of pressure terminals, including a substrate on a surface of which a fuse-forming pattern and terminal-forming patterns are provided, wherein the substrate is made of elastic material so that the terminal portions of the substrate can shrink and press against walls of the slots when inserted in the slots, thereby maintaining good conductivity between the fuse and the pressure terminals.

Abstract: A surface-mounted fuse has a hollow, open-ended insulating fuse body with a square sided central portion terminating in opposite, preferably square-sided, recessed, tapered end portions. A pair of preferably square-sided conductive end caps are provided having end walls respectively confronting the open ends of the fuse body and side walls enveloping the tapered end portions thereof. The side walls of the end caps define annular tapered cavities to receive without compressing the fuse wire one or more bent back ends of a fuse wire. The recessing of the tapered end portions of the fuse body provides axially outwardly facing abutment shoulders which limit the extent to which the end caps can be moved over the fuse body during assembly. The end walls of the end caps are then spaced from the ends of the fuse body to form outer spaces of greater size than the fuse element thickness, so that the ends of the fuse element are not compressed between the end cap end walls and the ends of the fuse body.

Abstract: A miniature electrical fuse has electrical lead wires (8) to permit the fuse to be connected into a circuit without use of a fuse holder. Wires (8) are resistance welded to electrically conductive end caps (4) closing off the end of a non-conductive tubular housing (3) containing a fusible element (1). Element (1) is connected to the caps (4) by solder joints (7) and caps (4) are connected to housing (3) by solder joints (6). The solder is a lead/tin alloy of high melting point. The end walls of the caps (4) are comparatively thick in relation to their side walls in the range 1.3 to 1 and 2.1 to 1.

Abstract: An expulsion type fuse is provided which is resistant to line surges caused by lightning. The fuse includes an inner fusing assembly which has a tube and a knurled conductive button inserted in one end of the tube. A fusing area is provided wherein a pair of fusing leads are disposed into a cylindrical solder pot. One of such pairs interconnects the button to the solder pot. The other pair interconnects the fuse leader to the solder pot.

Abstract: An electric fuse of the type which has a tubular fuse casing and a solid fuse end terminal telescopically received within the fuse casing is provided with an annular seal which is contained within an annular groove formed in the outer lateral wall of the end terminal. The seal is formed from a settable material which has been injected into the groove through a seal injection opening in the outer end of the end terminal which extends from the axial outer end and into fluid communication with an annular groove provided in the end terminal. A seal material bleed opening is provided in the end terminal which also extends from the axial outer end of the end terminal and into fluid communication with the annular groove. The bleed opening is positioned substantially diametrically opposed to the seal injection opening.

Abstract: The disclosed fuse has a tube of insulation, terminals at the ends of the tube, a link connecting the terminals, and a granular filler. At least one end cap is made of sheet metal which has one or more integrally extending tabs and a respective hole for each tab, each tab and its hole having the same size and shape. Granular fill is introduced via said hole(s) while the tab(s) are raised to provide wide openings. The end cap is sealed by driving the tab(s) into the hole(s). After the fuse contains granular filler but before driving the tab(s) into the hole(s), the fuse may be impregnated with a fluid, first adjusting the tab(s) to be narrowly open to retain the granular filler while admitting the impregnant.

Abstract: A draw-out fuseholder 10 is made containing a first, electrically conductive metal fuse contact 11 having an outer chamfer 12 and a circumferential top surface 13, a second, extended, electrically conductive metal fuse contact 14 having an inner chamfer 15, an outer chamfer 16, and a circumferential top surface 17, and insulating tube 18 comprising fiber reinforced, thermoset resin between the fuse contacts, where the top of the insulating tube has a sharp edge 19 and discontinuity 20 near the second fuse contact inner chamfer 15, and where the ratio of first fuse contact exposed length 25: second fuse contact exposed length 26 is from 1:1.3 to 1:2.5. This fuseholder 10 can be placed in the housing 32 of a draw-out device 30, where housing contact sets 39 and 40 mate with the fuse contacts 14 and 11 in an at-rest position.

Abstract: A current limiting cartridge fuse having a portion of restricted diameter in one end cap, which serves as a rejection feature, is provided with an insulating insert which cooperates with the fuse casing and the one end cap to allow an active portion of a short circuit element to be located in the restricted diameter portion of the end cap.

Abstract: A current limiting fuse has an electrical subassembly which includes fusible elements that are helically wound about a plurality of support plates which, in turn, are secured on each end to a terminal bracket. A leg member electrically and mechanically interconnects the terminal bracket to an end cap assembly fixed to a fuse housing and is flexible for allowing variation in distance between the end cap assembly and the internal subassembly such as would occur when the fuse is exposed to thermal excursions. The flexible leg has a portion which extends in generally transverse relation to the longitudinal axis of the subassembly, and the leg portion is swingable in an arc as the associated end cap assembly shifts relative to the position of the terminal bracket.

Abstract: An end cap assembly for a fluid resistant electrical device includes a solderable insulating tube end cap and an insert having a solderable cylindrical body portion positioned within a tubular opening of the end cap. The body portion of the insert has a circumscribing groove containing a quantity of solder. During assembly, the walls of the end cap defining the tubular opening are magneformed inwardly to tightly engage the body portion and thus provide limited frictional resistance to movement of the insert relative to the end cap. Next, the end cap and insert are heated until the solder melts. The end cap assembly provides a strong, torque resistant connection between the insert and the end cap while also maintaining a highly effective seal to preclude fluid leakage when the device is immersed.

Abstract: A chip fuse comprises a fuse base and a cover therefor both made of a heat resistant and electrically insulating material. The fuse comprises a pair of electrically conductive terminals, each having one end exposed outside of said base for soldering to a printed circuit board, with the other ends of the conductive terminals being spaced apart and in opposed relation to one another inside the fuse base. A fusible element is stretched between the inner ends of said conductive terminals and is secured to said ends by soldering or other suitable means.

Abstract: A high voltage fuse having a fuse assembly embedded in a granular dielectric material within a cylindrical dielectric housing, the fuse assembly including a number of fuse support surfaces, a support ring at each end of the plates to hold the plates in on equally spaced radial rotation, a conductive plate secured to each of said rings and including a threaded boss, a fuse element helically wound around said support surfaces and being electrically connected to said support plates, an electrically conductive end cap having a threaded stud and being mounted at one end of said housing, whereby the boss on one end of said fuse assembly is connected to said stud.

Abstract: An electric fuse having a support for helically wound fusible element or elements. The support includes a plurality of rods which are supported at their opposite ends adjacent the fuse end terminal by rod supports each of which is made from a pair of angularly arranged sheet-metal channels. The channels have a U-shaped cross-section and are arranged with their open ends facing the center of the fuse housing. Centrally positioned sections of the channels are flattened to facilitate rigid attachment of the channels to one another. The ends of the rods are received in and attached to interior portions of the U-shaped channels. A sub-assembly comprising the rods, rod supports and the wound fusible elements is pre-assembled and, when placed in a fuse housing, the ends of the channels cooperate with the inside walls of the housing to properly position the entire assembly.

Abstract: A three-terminal thermal switch having a common connector arm biased against a terminal of fusible material. When the terminal is softened or melted by current, the connector arm is released and moves into contact against a second terminal. Positioned in the base of a long-life dual-filament incandescent light bulb, the switch causes one filament to be energized until it burns out, and then connects the other filament to be energized.

Abstract: An electrical connector for vehicle fuse blocks having recesses with fuse blade connectors to removably receive blades of fuses lying in the upper portions and above said recesses wherein the electrical connector comprises a strip of conductive metal bent upon itself to provide an upstanding connector tab above the fuse elements with spaced parallel legs extending downwardly at each side of the fuse element and into a fuse block recess to be frictionally held between one of the spring contact elements and a wall of the recess.

Abstract: A vacuum fuse is mounted in an insulating oil filled tank containing electrical apparatus and is directly immersed in the insulating oil. A fuse ferrule contact block is suspended in the insulating oil. The suspension for the contact block permits insulating oil to contact the contact block over its entire surface. An opening in the tank top large enough to accommodate the fuse is located adjacent the contact block. One ferrule of the fuse is provided with a cylindrical extension to contact the contact block. The other ferrule is provided with an extension on which is mounted a bushing well and a cover plate.

Abstract: A fusible electric cable protector has a casing that defines a first internal space containing the fusible elements and a granular arc-quenching filler. At least one of the pair of terminal elements closing the casing is conductively connected to one connecting element that extends axially outwardly from the aforementioned terminal element and whose purpose is to connect the cable protector into an electric circuit. That connecting element has a cylindrical outer surface and is hollow, thus defining a second internal space filled with a granular arc-quenching filler. The aforementioned first internal space and the aforementioned second internal space are in communication by a passageway in one of the pair of terminal elements. A plug normally closes the open end of the cylindrical connecting element.