Abstract: Various techniques are provided for displacing air from partial discharge sensitive regions of a connector of a low partial discharge high voltage connector to other regions of the low partial discharge high voltage connector where electrical flux is reduced. A plug member is mated with a receptacle member to provide the connector, with a seal member disposed in a cavity provided by the plug member and/or the receptacle member. In response to the mating, the seal member is compressed at an initial contact region between an innermost layer and an outermost layer of the seal member. In response to the compressing, air is forced radially inward toward the innermost layer and radially outward toward the outermost layer away from the initial contact region to reduce partial discharge associated with the connector. Additional methods and systems are also provided.

Abstract: An easy-to-assemble fuse has a fusible body, a socket, and a cover. The fusible body is engaged with the socket. The cover is covered on the socket and the fusible body and is engaged with the socket. By the engagement between the fusible body and the socket and the engagement between the socket and the cover, the fuse achieves the purpose of fast alignment and positioning. The fuse can be quickly assembled during the manufacturing process, thereby simplifying the manufacturing process, and reducing the production cost.

Abstract: Disclosed are various protection devices and associated methods. In some embodiments, a protection device may include a fuse assembly having a fusible link extending between a first lead end and a second lead end, and a first lead extending from the first lead end and a second lead extending from the second lead end. The protection device may further include a body including a first section coupleable with a second section, wherein the first and second sections define a central cavity housing the fusible link. The first section may include an interior face operable to engage an opposite interior face of the second section, an engagement member extending away from the interior face towards the second section, and an engagement channel adjacent the engagement member, the engagement channel operable to receive a corresponding engagement member of the second section.

Abstract: Various implementations of insulation piercing connectors are disclosed. The insulation piercing connectors include a simple and efficient design for providing electrical tap connections to a power cable for voltage detection purposes. The insulation piercing connector includes at least a top housing and a bottom housing that come together to receive the power cable. Terminal contacts are housed internally within the insulation piercing connector, and the terminal contacts are positioned to pierce the power cable when the insulation piercing connector is assembled into an operational state.

Abstract: A fuse housing for safe outgassing of a fuse is disclosed. The fuse housing features labyrinth walls disposed at opposing sides of the fuse housing. The labyrinth walls feature serpentine paths for the flow of outgassing material. At an end of the serpentine paths which is farthest away from a fuse element are vent channels. The vent channels are narrower in depth than that of the serpentine paths of the labyrinth walls, facilitating a suctioning effect during outgassing. Conductive material deposits along the serpentine paths so that the fuse maintains a high OSR rating. By directing and controlling the outflow of gases, the fuse housing is able to reduce the temperature of the gases produced. The fuse housing is also able to reduce the physical and observable effects of outgassing.

Abstract: Exemplary embodiments of the present disclosure of a fuse may include a fuse body having a first portion and a second portion. The first and second portions may be configured to mate together thereby forming an internal cavity. A first inner termination and a second inner termination may be at least partially attachable to the first and second portions of the fuse body at respective first and second ends. A fusible element may be disposed in the cavity of the fuse body and extendable from the first inner termination at the first end of the fuse body to the second inner termination at the second end of the fuse body. The fusible element may be attachable to the first inner termination at a first connection and the second inner termination at a second connection. The first and second connections may be inspectable when the fuse is in an assembled state.

Abstract: A surface mount device chip fuse including a dielectric substrate, electrically conductive first and second upper terminals disposed on a top surface of the dielectric substrate and defining a gap therebetween, a fusible element formed of solder disposed on the top surface of the dielectric substrate, within the gap, bridging the first and second upper terminals, and electrically conductive first and second lower terminals disposed on a bottom surface of the dielectric substrate and electrically connected to the first and second upper terminals, respectively, wherein a material of the dielectric substrate exhibits a de-wetting characteristic relative to the solder from which the fusible element is formed.

Abstract: A loadbreak bushing that includes a loadbreak trunk and at least one loadbreak leg. Opposing ends of the loadbreak trunk can include a first connection interface and a second connection interface, respectively, the first connection interface being configured to be matingly received in a bushing well. Each loadbreak leg, which can include a contact assembly having at least a female contact, can extend along a central leg axis from the loadbreak trunk to a third, or leg, connection interface, the central leg axis being slanted or diagonal relative to a central trunk axis of the loadbreak trunk. The third connection interface can be configured to be coupled to an elbow connector that is coupled to a power cable, among other electrical connectors, while the second connection interface can be configured to be coupled to a grounding elbow connector, among other electrical connectors and accessories.

Abstract: Provided is a chip fuse and a method for producing the same, which is improved to facilitate balanced release of impact and vapor generated upon fusion. The chip fuse includes a fuse body having a pair of facing upper and lower ceramic substrates, a fuse wire support having a vertical through hole in its center and held between the ceramic substrates, and a fuse wire mounted between the two ends of the fuse wire support across the through hole, and a pair of metal caps fitted on the two ends of the fuse body, wherein the upper ceramic substrate and the fuse wire support, and the lower ceramic substrate and the fuse wire support, are respectively adhered together on their mutually facing surfaces to hermetically close the through hole, partially leaving a non-adhered region on the adhered surfaces.

Abstract: Methods and apparatus are described to quickly and easily identify live URD elbow connectivity between junction cabinets in underground electric utility power distribution circuits so URD connected elbows can be correctly tagged. A first method segregates elbows in a cabinet into input elbows from an upstream cabinet, output elbows to a downstream cabinet, and by phase attribute. A second method injects a tracer signal into the elbow capacitive test point of an upstream output elbow and detects the tracer signal at the elbow capacitive test point of a downstream elbow capacitive test point to identify connectivity. A third method compares the output current of an upstream output elbow to that of the input current of a downstream input elbow to identify connectivity.

Abstract: A photovoltaic in line connector assembly has an integral fuse, and is double molded to provide electrical insulation, protection and strain relief. The assembly can be integrated with, or added to, a wiring harness for a photovoltaic installation, thereby providing one fuse per solar panel. The assembly may include zero, one, or two connectors that are male, female, or one of each.

Abstract: Various embodiments are generally directed to providing a fuse with one or more walls for suppressing an arc during a fuse explosion and one or more methods for making the same. A fuse may include: a housing having an interior cavity and an outer cavity, a fuse element disposed within the interior cavity, a plurality of terminals extending out of the housing and electrically connected to the fuse element, and an arc-suppression wall disposed in the interior cavity that is configured to suppress an electric arc associated with the fuse element opening.

Abstract: An artificial lighted tree is presented with power routed through the trunk of the tree and three-wire safety grounding. The artificial lighted tree comprising a fused electrical plug having improved safety features comprising: a body portion surrounding respective first ends of a first, a second and a third electrical wire, the body portion further comprising a fuse holder embedded within an upper region of the body portion, and a fuse adapted to be releasably secured within the fuse holder via releasable securing means, a live blade in electrical communication with the first end of the first electrical wire, a neutral blade in electrical communication with the first end of the second electrical wire, a ground pin receptacle in electrical communication with the first end of the third electrical wire, wherein the body portion surrounds and maintains the live blade, neutral blade, and ground pin receptacle in spaced apart orientation corresponding to sockets on an electrical outlet.

Abstract: An optical fiber connector according to the present disclosure includes a fiber ferrule, a spring, a coil spring seat and a spring push. An opening extends through the front end of the spring. The spring seat includes two first tooth portions and two second tooth portions. The spring seat has opposing front and rear surfaces. The front surface of the spring comes in contact with the fiber ferrule. An opening extends through the rear surface of the spring. The first tooth portions extend from the rear surface and the respective first tooth portion has a first inner surface and a first outer surface. The first outer surface is a curved surface. The second tooth portions extend from the rear surface and the respective second tooth portion has a second inner surface and a second outer surface. The second outer surface is a curved surface. The first and second tooth portions extend into the opening of the spring and the convex surfaces thereof come in contact with the inner sides of the spring.

Abstract: A mast lighting system of the type including at least one mast having a proximate end and an opposite distal end, the distal end capable of supporting an electrical component and the proximate end mounted to a foundation that has at least a portion extending into the ground, an electrical cable within the mast connecting the electrical component to a distribution component assembly through a breakaway electrical connector, and a power source connected to the distribution component assembly. The breakaway electrical connector including a fuse in a first part and a fuse clip in a second part forming the breakaway connection between the two parts of the electrical connector.

Abstract: A terminal-integrated fuse (2) includes two planar members (10), (10) serving as terminals for mounting on a substrate. The two planar members (10), (10) are spaced on a same horizontal plane. A fuse body (4) is located on a horizontal plane at a level different from the level of the said horizontal plane and between the planar members (10), (10). The fuse body (4) is formed integral with the planar members (10), (10). A casing (14) has side walls (18), (20) and end walls (22), (24) disposed around an opening. The fuse body (4) is positioned in the casing (14), and the two planar members (10, (10) are in contact with the end walls (22), (24), respectively. An arc suppressing material portion (26) is provided in the casing (14) in such a manner the fuse body (4) is embedded therein.

Abstract: A fuse assembly includes a housing comprising a first compartment and a second compartment. The fuse assembly also includes a fuse holder movable between a closed position and an open position relative to the housing. A fuse can be removed when the fuse holder is in the open position, and the fuse is inaccessible when the fuse holder is in the closed position. The fuse assembly also includes a first connector comprising a first fuse contact disposed at one end and a first wire coupler disposed at an opposite end. The first connector is slidable between an engaged position and a disengaged position within the first compartment. The connector is electrically coupled to the fuse in the engaged position and electrically decoupled in the disengaged position. The first connector locks the fuse holder in the closed position when the first connector is in the engaged position.

Abstract: A fuse lock-out assembly for a battery pack is provided. The assembly includes a first housing having an interior region holding a manual service disconnect lower housing and a manual service disconnect upper housing therein. The assembly further includes a fuse holding housing coupled to the first housing that has a first fuse compartment holding a first fuse therein. The assembly further includes a slidable door that slides from a first operational position to a second operational position. The slidable door covers an open end of the first fuse compartment at the first operational position, and extends over a portion of the manual service disconnect lower housing at the second operational position only if the manual service disconnect upper housing is previously de-coupled from the lower housing.

Abstract: Modular fuse block assemblies configurable to accommodate overcurrent protection fuses of different physical sizes. Single and multi-pole blocks may be easily assembled from a reduced number of modular parts than would otherwise be required, with enhanced safety features and improved capability to meet spacing requirements in a multi-pole fuse block.

Abstract: A device for holding an electric fuse assembly having a fuse carried by a first end fuse holder and a second end fuse holder. The assembly includes a first housing section having a cavity formed therein for receiving the first end fuse holder and a second housing section having a cavity formed therein for receiving the second end fuse holder. An end of the second housing section is adapted to be separably coupled with an end of the first housing section by placing an interior surface at the end of the first housing section into overlapping engagement with an exterior surface of the second end fuse holder and an interior surface of the second end fuse holder into overlapping engagement with an exterior surface at the end of the first housing section. Such a coupling functions to provide a moisture resistant seal.

Abstract: An inline fuse holder assembly encloses a fuse assembly including a fuse, and first and second wire connectors at respective first and second longitudinal ends of the fuse assembly. The inline fuse holder assembly includes first and second components including respective first and second connectors. The first and second connectors include mateable, non-releasable connection components configured to connect the first and second components to one another and form a substantially waterproof, non-releasable connection upon connection. The first and second components together define an enclosure for enclosing an entirety of the fuse assembly when the first and second fuse holder components are connected to one another.

Abstract: An electric component includes: an insulating housing; a conductive member inserted into the housing until hitting a stop provided by the housing, the conductive member configured to mate with a conductive portion of a device that mates with the electrical component, the mating device thereby applying a force to the conductive portion, the conductive member including a wall, the wall defining a projection that is at least substantially coplanar with the wall; and wherein the housing includes a catch that flexes when the conductive member is inserted into the housing to allow the projection to move past the catch so that the conductive member can hit the stop, at which point the catch unflexes into locking engagement with the projection.

Abstract: A monitoring module for a fusible switch disconnect device includes an open fuse detecting element and wire leads for completing an electrical connection with a fuse.

Abstract: A mounting assembly couples a current limiting fuse to an element that defines a longitudinal axis. The mounting assembly includes a mounting member on the element; a first attachment member coupled to the mounting member in a fixed position relative to the mounting member; and a second attachment member coupleable to the current limiting fuse. The first and second attachment members are configured to be attached to one another in a plurality of discreet positions about an axis that is non-parallel to the longitudinal axis.

Abstract: A rotary switch containing fuse capabilities. An electrical contact disc is rotatively mounted in a housing. A handle assembly is mounted to the electrical contact disc and rotates therewith, and is replaceably mounted in the housing so as to allow the handle assembly to be removed from the housing and prevent inadvertent operation of the rotary switch. A pin extends in the handle assembly and a fuse retainer and engages a horse shoe clip, and in doing so, axially movably attaches the fuse retainer to a fuse-holding disc. The pin then extends in a bushing. A pair of blind slots in the pin engage a hair pin clip, and in so doing, the handle assembly can rotate relative to, but cannot be removed from, the housing, unless the pin is rotated 90 degrees, which would orientate the pair of through slots out of engagement with the hair pin clip.

Abstract: A fuse includes a fuse element having a pair of terminal portions interconnected by a fusible portion, pivot pawls provided between the fusible portion and each of the terminal portions, seat surfaces respectively supporting the pivot pawls thereon, thereby holding the fuse element within an insulating housing, and pivotal movement-allowing spaces for allowing two portions of the fuse element, separated from each other when the fusible portion is melted, to be pivotally moved about the pivot pawls inside and outside the insulating housing.

Abstract: A disconnection mechanism for a dark current fuse provides a connecting terminal connecting the dark current fuse, a fuse block body receiving the connecting terminal, and a fuse holder slidably engaged with the fuse block body in a direction of connecting the dark current fuse, the fuse holder provides a cutaway opening exposing a head of the dark current fuse being therein, an engaging projection disposed at an opening edge of the cutaway opening for engaging the head, and a supporting wall portion contacting a trunk of the dark current fuse. The disconnection mechanism is not necessary to store the extracted dark current fuse after a dark current fuse circuit is opened, so that there arises no possibility of missing the extracted dark current fuse, the dark current fuse can be extracted by using a puller, and the dark current fuse is surely held with being prevented from slipping off.

Abstract: A fusible link in which the overlooking of a half-fitted condition of a spacer is positively prevented, and the strength of retaining of the spacer on a housing is increased. Guide walls are formed on an inner surface of the housing (which houses a fuse element), and are disposed respectively in the vicinity of projections for retaining the fuse element-holding spacer. Each of the guide walls forms an insertion space into which a respective one of resilient engagement piece portions of the spacer can be inserted, and the insertion space provides a space which allows elastic displacement of the resilient engagement piece portion when the resilient engagement piece portion is brought into and out of engagement with the projection.

Abstract: A fuse box including an insulative bottom shell having a locating block and fixedly mounted with a metal common receptacle, a cover shell covered on the bottom shell and secured thereto by hooks, a plurality of spring supported jacks mounted in respective through holes in the locating block of the bottom shell, a plurality of cartridge fuses respectively connected between the jacks and respective plug holes in the metal common receptacle, a plurality of first electric wire connectors respectively fastened to respective electric wires and then connected to the jacks by a respective screw joint, and a plurality of second electric wire connectors respectively fastened to respective electric wires and then respectively threaded into a respective screw hole in the metal common receptacle.

Abstract: A cylindrical fuse holder assembled by uniting a molded holder body and a molded cap between which a fuse tube is steadily held by means of a socket movable axially in the holder, a coil spring for pressing the socket so as to bring the socket in contact with a side contact piece in the holder body, and another coil spring for pressing the fuse tube. The socket pressing spring for urging the socket is integrally connected to the fuse tube pressing spring. Thus, this fuse holder can be composed of a small number of parts, assure high stability of electrical connection, and be used in safety.

Abstract: A cartridge fuse mounting structure including a fuse holder, a cartridge fuse mounted inside the fuse holder, two cylindrical fuse connectors respectively connected to two opposite ends of the cartridge fuse, two electric wires respectively connected to the cylindrical fuse connectors by a respective wire binding clamp, and two end caps respectively mounted around the electric wires and respectively fastened to two opposite ends of the fuse holder, wherein each cylindrical fuse connector has an inside annular groove, which receives one end of the cartridge fuse, a split coupling tube at one end clamped on one end of the cartridge fuse, and a radial screw hole at an opposite end mounted with a tightening up screw, which holds down the respective wire binding clamp and the respective electric wire.

Abstract: A fuse connection structure which is capable of receiving and retaining standard fuses when dark current fuses are not used, in such a manner that the standard fuses are protected from external forces and are positively held in position. The fuse connection structure includes a fuse holder (1) having dark current fuses (8) mounted therein, and a fuse block body (7) to which the fuse holder can be attached, the fuse block body having connection terminals. The fuse holder (1) includes a dark current fuse insertion portion (5) holding widthwise opposite ends of the dark current fuses, a cover portion (6) provided outside of the fuse insertion portion, and ribs (2) and (3) interconnecting the fuse insertion portion and the cover portion. The fuse block body (7) has relief portions (16) for the ribs (2) and (3). The ribs (2) and (3) extend in a direction of a thickness of the dark current fuse relative to the dark fuse insertion portion (5).

Abstract: A disconnection mechanism for a dark current fuse provides a connecting terminal connecting the dark current fuse, a fuse block body receiving the connecting terminal, and a fuse holder slidably engaged with the fuse block body in a direction of connecting the dark current fuse, the fuse holder provides a cutaway opening exposing a head of the dark current fuse being therein, an engaging projection disposed at an opening edge of the cutaway opening for engaging the head, and a supporting wall portion contacting a trunk of the dark current fuse. The disconnection mechanism is not necessary to store the extracted dark current fuse after a dark current fuse circuit is opened, so that there arises no possibility of missing the extracted dark current fuse, the dark current fuse can be extracted by using a puller, and the dark current fuse is surely held and prevented from slipping off.

Abstract: Bifurcated gripping pieces, each having a clearance in a thickness direction of a terminal, are projected from inner edge portions of respective terminals so as to confront each other. An inserting opening of an inserting space is made on a lower surface of a housing. Closing plates interposed between a pair of slits extending in a terminal inserting direction from the inserting opening are arranged on both lateral walls of the housing. The pair of closing plates are gripped between the respective gripping pieces while inserted into the clearances of the respective gripping pieces with the terminals inserted into the inserting space.

Abstract: A fuse holder (2) for use in electrical apparatus includes a tubular body (6) having outer and inner ends (10, 16). A first electrical contact element (22) and a mounting flange (8) are secured to the inner and outer ends, preferably using resilient retaining rings (53, 68) engaging circular grooves (52, 20; 62, 20) formed in the opposed surfaces. A tubular second electrical contact element (32) is secured within the tubular body and preferably has a flexible electrical terminal strap (24) which extends out through an opening (23) formed in the tubular body. Fluid-tight seals are provided between the inner surface (14) of the tubular body and the outer surfaces (46, 58, 30) of the first and second electrical contact elements and the mounting flange assembly by using pairs of O-rings (38, 50 and 70); an adhesive (39) is also used to secure these elements to the body.

Abstract: The present invention provides a fuse holder as part of an integrated switch base assembly for attachment to a fusible switch having one or more phases between the line and load side of a circuit. The fusible switch has a switch base assembly for opening and closing a switch contact. The switch base assembly has a mounting surface. The fuse holder includes a generally planar base made of electrically-insulating material. The base has a top and bottom face. The top face has a plurality of upstanding walls integrally formed therewith which define a compartment corresponding to each phase. The bottom face has a contoured surface adapted to abut the mounting surface of the switch base assembly. A first and second fuse clip correspond to each phase and are secured on opposite ends of the top face within the compartment. A terminal connects to the load side of the circuit and electrically and mechanically connects to the first fuse clip. The fuse holder includes an elongated connector having two ends.

Abstract: A disconnection mechanism for a dark current fuse provides a connecting terminal connecting the dark current fuse, a fuse block body receiving the connecting terminal, and a fuse holder slidably engaged with the fuse block body in a direction of connecting the dark current fuse, the fuse holder provides a cutaway opening exposing a head of the dark current fuse being therein, an engaging projection disposed at an opening edge of the cutaway opening for engaging the head, and a supporting wall portion contacting a trunk of the dark current fuse. The disconnection mechanism is not necessary to store the extracted dark current fuse after a dark current fuse circuit is opened, so that there arises no possibility of missing the extracted dark current fuse, the dark current fuse can be extracted by using a puller, and the dark current fuse is surely held and prevented from slipping off.

Abstract: An integral plastic fuseholder for receiving portions of a pair of in-line electrical conductors which may be connected to a non-fused electrical adapter plug. One conductor of the pair is severed within the holder to form an open connection until the connection is completed by a flat-blade insertion fuse. A pair of female electrical terminals is located within the fuseholder with each terminal connected to a different end of the severed conductor. The fuseholder has a foldable clam-shell housing formed by a pair of foldable cover sections which are joined by a centrally disposed hinge section. The housing is opened to receive the in-line electrical conductor pair, or alternatively is folded to a closed position to retain the in-line conductor pair and to create a partially enclosed cavity which forms a fuse-insert access opening opposite the hinge section. Any inserted fuse is connected in series with the conductor terminals to complete a fused conductor connection to an adapter plug through the fuseholder.

Abstract: A fuse box for distributing current derived from a battery through a plurality of fuses, includes a main power source box to be connected to the battery, a sub-power source box to be integrated with the main power source box, mechanical coupling for mechanically coupling the main power source box with the sub-power source box, and electrical coupling for electrically coupling the main power source box with the sub-power source box.

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 for handling normal load currents substantially in excess of about 80 amps, the fuse comprising a metal portion formed of an integral piece of metal having outermost, spaced terminal-forming portions with bolt-anchoring holes therein and a fuse link-forming intermediate portion between the terminal-forming portions. The terminal-forming portions of the metal piece has a rectangular configuration having inner margins spaced from one another. The fuse link-forming portion of the metal piece has an S-shape with one face thereof being co-planar with one of the faces of the terminal-forming portions thereof. The thickness of the S-shaped fuse link is only a fraction of the thickness of the terminal thickness and has outermost legs respectively extending from the opposite sides of the innermost margins of the terminal-forming portions of the metal piece and a central link interconnecting the outermost legs.

Abstract: A high breaking capacity micro-fuse includes a body having a wall which forms a cavity in a body, pair of conductive terminals extending through the wall, and a fusible element extending between the pair of conductive terminals and connected thereto in the cavity. An insulating member with a hole through which the fusible element extends has a shape by which a space is provided between the inner surface of the wall of the body and the insulating member when the insulating member is disposed in the cavity of the body.

Abstract: A chip fuse is disclosed which includes a rectangular parallelepiped box shaped main body with an opening on the upper side thereof, and a cover covering the opening. Two main terminals are disposed on opposite shorter side walls of the main body. A plurality of subsidiary terminals are located along inner faces of the opposite longer walls of the main body. A fusible element is extended, inside the main body, between one of the main terminals via a some or all of the plurality of subsidiary terminals and the other of the main terminals in a zigzag manner.

Abstract: The invention relates to a fuse holder, which essentially comprises a casing and a carrier which can be engaged therein with the aid of a bayonet-lock between which is resiliently received e.g. a fuse link. While a conventional foot contact on the bottom of the casing ensures an electric supply, a contact bridge metal strip in the carrier provides an electrical connection with the other cap of the fuse link to a side contact in the casing. The contacting takes place only when the carrier is turned fully home in the one pin bayonet-lock which thus allows only one locked position between the carrier and the casing.

Abstract: A holder for an electric fuse has a first receiving body which has an internally threaded nut assembled thereto in a manner allowing relative rotation between them. The assembly of the nut to the body allows separation of the nut from the body when a predetermined axial separating force is imparted between the parts, without damage to them. A second fuse receiving body has an external thread which engages the thread of the first body. As the threaded connection is made the body sections are drawn together to enclose the fuse therein.

Abstract: An electrical fuse for mounting on a circuit board. The fuse has a housing member with terminal members engaging a fuse element intended to interrupt an external electrical circuit coupled with the terminal members upon an occurence of a fault condition in the electrical circuit. The housing member has internal arc-suppressant structure supporting and deflecting the fuse element to shield the terminal members from arcs occurring upon a failure of the fuse element in response to the fault condition.

Abstract: A fuse block with a fuse formed of a single piece of fusible metal having a narrowed mid-section and wider end tongues which electrically couple the fuse block to disconnect terminals of an electrical system. A plastic housing covers the portions of the tongue adjoining the mid-section. The housing has a central aperture exposing all sides of the narrowed mid-section of the fusible element to the air. The aperture prevents the housing from acting as a heat sink for the fusible element and from interfering with the prompt reaction of the fuse to an electrical overload.

Abstract: A moisture and waterproof seal for a fuse is provided while allowing selectively for fuse visibility enhancing non-breakability, and improved resistance against moisture ingress. The fuse holder includes flexible molded members which are formed with lips towards the ends remote to the fuse ends thereby allowing the lips to engage and envelope the fuse sealing against moisture. A cuff and groove formation leading the lips provides enhanced sealing of the molded parts. The members can be moved between a position exposing the fuse for visibility and the sealing position enclosing the fuse against breakage. Internal to the molded members are yieldable clips for engaging the end ferrules of the fuse.

Abstract: A miniature electrical fuse designed for at least 60 volt circuit applications in printed circuit application features protection against housing explosion under fuse blowing conditions by means of arc barrier-forming shroud members formed by confronting rigid arc barrier walls of base and cover members between which end terminals of the fuse are sandwiched. The walls form arc barriers which closely confront or contact the fuse wire on all four sides thereof ahead of the points where the fuse wire ends are connected to the terminals. These points of connection are advantageously out of alignment with the rest of the fuse wire. The terminals preferably extend from the confronting ends of the base and cover members where projections from the cover bearing on the terminals secure the terminals in place and seal the openings thereat.

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.