Abstract: A power-supply breaker apparatus of the present invention includes a fuse provided between a power supply and a load in an electric circuit, an apparatus main body for housing the fuse, a pair of main body side terminals, a plug housing chamber for housing the plug in the apparatus main body movably in a fitting/detaching direction, and a pair of plug side terminals which become conductive with each other in the plug. The electric circuit is electrically conductive via the fuse, and the pair of main body side terminals are supported to the apparatus main body movably in a direction crossing substantially perpendicularly to the fitting/detaching direction, and one of the pair of the main body side terminals is connected with the power supply, and the other terminal is connected with the load. Moreover, when the plug is moved in the fitting/detaching direction, the pair of plug side terminals are freely fitted into and detached from the pair of main body side terminals.

Abstract: A power-supply breaker apparatus of the present invention includes a fuse provided between a power supply and a load in an electric circuit, an apparatus main body for housing the fuse, a first bus bar whose one end is fixed to one fuse terminal of the fuse, a second bus bar having one end fixed to one of the power supply and the load, a plug housing chamber for housing the plug in the apparatus main body movably in a fitting/detaching direction, and a pair of plug side terminals which become conductive with each other in the plug. The other end of the first bus bar is extended so as to be composed as one terminal of the pair of main body side terminals, and the other end of the second bus bar is extended so as to be composed as the other terminal of the pair of main body side terminals.

Abstract: The circuit breaking device 10 includes a plug box 20 including circuit terminals 21 and 22 respectively connected to the respective open ends of two electric circuits, and a plug main body 30 including short-circuit terminals 31, 32 and disposed in such a manner that it can be shifted by a given amount with respect to the plug box 20; in particular, the plug main body 30 is structured such that not only it can bring the short-circuit terminals 31 and 32 into fit with the circuit terminals 21 and 22 of the plug box 20 to thereby close the two electric circuits, but also it can remove the short-circuit terminals 31 and 32 from the circuit terminals 21 and 22 to thereby open the two electric circuits and thus cut off the circuit currents thereof.

Abstract: A fuse system includes a fuse holder having an outer surface; a pair of fuse clips mounted inside the fuse holder, the pair of fuse clips being recessed from the outer surface of the fuse holder a predetermined distance; an insulative fuse housing; a fuse element mounted within the insulative fuse housing; blade terminals electrically connected to the fuse element and extending from the fuse housing; and an insulative sleeve on each of the blade terminals, the insulative sleeves extending from the fuse housing and covering a portion of each of the respective blade terminals and leaving a remaining portion of the blade terminals exposed; wherein the exposed portions of the blade terminals are less than the predetermined distance so that when the blade terminals make an electrical contact with the fuse clips, the exposed portions of the blade terminals are within the fuse holder and only the insulative sleeves are exposed.

Abstract: A disconnect box is provided in the present invention that has a rear wall and perimetrically bounding side walls connected thereto. A line wire and a load wire are received in the disconnect box, which comprises a line terminal mounted in the disconnect box and to which the line wire is connected, a load terminal mounted in the disconnect box and to which the load wire is connected, and a fuse releasably secured in the disconnect box. The fuse has an operational position wherein the fuse contacts the line terminal and the load terminal thereby creating mechanical and electrical connection between the line wire and first load wire, and a non-operational position such that when the fuse is disconnected from the line terminal and the load terminal the mechanical and electrical connection between the line wire and the load wire is broken.

Abstract: A safety fuse system includes a safety fuse including a fuse casing having a bottom surface and opposing end surfaces at each end of the bottom surface; a fuse element inside the fuse casing; a pair of electrical contacts connected to the fuse element, the electrical contacts extending through openings in the bottom surface of the fuse casing to an exterior of the fuse casing; the openings being located at a distance from the opposing end surfaces so that the electrical contacts are remote from the opposing ends; a fuse holder including a fuse holder casing having a top surface, the top surface including apertures for receiving the electrical contacts of the safety fuse, the apertures being in alignment with the safety fuse openings when the safety fuse is engaged with the fuse holder; metal contacts within the fuse holder casing for receiving the electrical contacts.

Abstract: A system for establishing and terminating the flow of electrical current through a circuit which includes a fuse puller which engages and retains a standard plug-in fuse element. The system also includes a housing which supports the fuse puller and associated fuse in a first, raised position which separates the fuse from its corresponding contact terminals, and a second, lowered position in which the fuse contacts the terminals.

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 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 overcurrent protection module includes a base unit and a removable fuse holder. The base unit is mountable on a panel or a DIN rail so that a containing space for the fuse holder stands perpendicular to a plane of the panel or the DIN rail, and in line with a conventional wiring orientation. The fuse holder includes at least three fuse slots arranged in a single plane, so that in a position inserted in the base unit, the fuse slots are perpendicular to the plane of the panel or DIN rail. Line terminals are singularly located on a first side wall of the base unit and load terminals are singularly located on a second side wall, opposite to the first side wall. The overcurrent protection module according to the invention is simpler to mount and requires less surface mounting space than a conventional fuse block. The overcurrent protection module also provides protection from shock hazard by shielding an operator from contact with live terminals or fuses.

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: A connection terminal includes a pair of connection portions interconnected through a fusion portion, and each of the connection portions is defined by a bottom plate, opposite side plates formed respectively on opposite sides of the bottom plate, and a top plate. A spring portion extending from the top plate is folded back from a front side thereof to be disposed within the connection portion so that a mating connection terminal can be held between the spring portion and the bottom plate. The connection terminal is stamped from an electrically-conductive metal sheet in such a manner that the spring portion extending from the top plate is extended along and disposed generally adjacent to the fusion portion before the spring portion is folded back.

Abstract: A fuse box assembly including a fuse box and a fuse holder. The fuse holder has a saddle configuration and overlies one of the terminal sockets of the fuse box. The fuse holder includes an opening to receive the body of a fuse and the fuse holder is mounted on the fuse box for movement between an operative position in which the terminal tabs of the fuse are received in the associated terminal socket of the fuse box and a raised, inoperative position in which the terminal tabs of the fuse are removed from the terminal socket. The holder includes a pair of legs which extend downwardly along opposite side walls of the fuse box and which include slots which coact with pins on the side walls of the fuse box to provide a detenting action to positively maintain the holder in its raised, inoperative position.

Abstract: A novel voltage switching device operable under a first and a second source voltages is disclosed. The device, which is capable of converting one of the source voltages to the design voltage of an electrical appliance when the two are different, comprises a connector having voltage indicators representing the first and the second voltage switching positions, respectively; and a voltage switching plug having a groove and a pair of fuses for the different source voltages. The connector, in one of the embodiments, may have two pairs of guide slots arranged in a perpendicular relationship between the two pairs. The plug may have a pair of complementary members apt to be selectively engaged with any one pair of the slots when the plug is coupled with the connector. The plug can be accurately coupled with the connector in the first or the second source voltage position based on a simple reading of the corresponding voltage indicator through the groove provided in the cover.

Abstract: A series or multiple-contact terminal having a socket in which stationary contacts are arranged for cooperative engagement with switching contacts on an operating element. The switching contacts are formed through a retainer for fuse inserts with two contact elements which are located spaced apart opposite each other on a fuse carrier; wherein the fuse carrier is retained so as to be rotatable and lockable within a guide member, with the guide element being guided within the base so as to displaceable and withdrawable therefrom; and wherein the fuse carrier cover the stationary contacts in the socket secure against touching by means of cover rails in the inserted as well as in the raised position, and whereby in the raised and transversely rotated position these rails provide an access for the retention of the fuse insert.

Abstract: Assembly systems for compact N-pole fusible pull out switches of different ratings use the same two part insulator bases and the same insulator pull out heads in all switches. In one system, for switches of a given current rating but two different voltage ratings, there are two types of fixed contacts in the base but the contacts are the same for both voltage ratings; the fuseholder/stab contact members in the head are all the same for both switch ratings, and all mounting hardware and incidental hardware is the same for all switches. The voltage ratings are differentiated from each other only by different base terminals and by different insulator barriers over the base contacts.

Abstract: A fuse switch includes a fuse element having a plurality of radiating arms, each arm being positioned, in its turn, above circuit contacts in the switch. The fuse is mounted for rotation, and is controlled by a rachet wheel drive mechanism to change its position. An indication lamp is provided to show when the circuit is broken and to light the switch to indicate the need to repair the fuse when the fuse is burned down due to overload of the circuits. To change the fuse, one merely pushes a drive link so that a pawl of the link drives the rachet wheel, and thus the radiating fuse to rotate another pair of fuse radiating arms into position thereby continuing the power supply. At the same time, the indication lamp is shut off.

Abstract: A spring jaw fuse clip (18) having a backup spring (22) encircling the fuse clip and bearing inwardly upon the outer surfaces of the legs (18b) of the fuse clip, the spring being attached to the fuse clip by engagement of portions (22d) thereof with horizontal (18e) notches in the edges of the fuse clip legs to prevent displacement of the spring with respect to the clip, and having a insulating fuse puller loop (20) disposed within a pair of slots (18c) open to the upper ends of the fuse clip legs for linear movement therein. A rib (20c) is provided on the fuse puller loop in the area between the fuse clip legs to prevent tilting or displacement of the fuse puller loop with respect to the fuse clip and to facilitate insertion of the fuse (8) blade therein by camming the legs (18b) outwardly to the width of the fuse blade upon being displaced to its outermost position in said clip.

Abstract: The following specification describes an integrally formed fuse puller assembled for limited movement to a fusible switch base in encircling relationship to a fuse mounted on the base for disengaging the fuse from a fuse clip.

Abstract: A fuse holder assembly for a cartridge type fuse includes an elongated fuse carrier bar having a cylindrical opening in a fuse containment portion for loosely accepting the fuse therein. The fuse contacts include a conductive spring at the inward end of the assembly and a generally U-shaped spring fuse clip member at the outward end. The assembly includes a recess at its inward end to accept an end of the fuse carrier bar and when the carrier bar is inserted in the recess the inward end of the fuse is brought into contact with the spring. The fuse carrier bar is then pivoted to cause the outward end of the fuse to be captured by the fuse clip. To remove a fuse, the fuse carrier bar is pivoted to pull the fuse out of contact with the fuse clip and the fuse carrier bar is then removed by being pulled outward from the assembly. To insure that only the proper size fuse is placed in circuit, a unique spacing is provided between the spring contact and the fuse clip in the location reserved for that size fuse.

Abstract: A fuse holder for a cartridge type fuse is formed of a housing having a fuse transfer region and a fuse contact region in the interior space thereof. A fuse carrier is provided, which carrier is captured within the housing. The fuse carrier is movable between the fuse transfer region and the fuse contact region. A fuse is inserted or removed into the fuse carrier through a suitable opening provided within the fuse transfer region. Within the fuse contact region there are provided fuse contact members which engage the conductive ends of the fuse when the carrier moves the fuse into the fuse contact region.

Abstract: This load-break fuse equipment comprises two draw-out fuse assemblies, one of the load-break type and one of the non-load-break type, each removably mounted in its own individual receptacle. The load-break fuse assembly and its receptacle comprise a load-break switch and a fuse electrically connected in series with each other. The non-load-break fuse assembly comprises a fuse, and this fuse is electrically connected in parallel with the fuse of the load-break fuse assembly and in series with said load-break switch.