Abstract: A fuse component includes an electrically insulating substrate having a top surface, a thick film fuse element applied to the top surface and a cover layer. The cover layer is made of an electrically insulating material having good caloric conductivity. The cover layer can be directly applied to the thick film fuse element and the adjoining zones of the top surface of the substrate. The cover layer can contain a glass having a specific caloric conductivity of >2 W/mK. The cover layer can have a window disposed above a section of the fuse element, the section of the fuse element located within the window being at least partially covered by a solder containing layer.

Abstract: A component with an internal conductor is so configured that it is ruptured at a predetermined position while forming an arc, if predetermined current/voltage conditions occur at the terminals of the component. The component includes a circuit element which is so arranged that an arc formed at the predetermined position can act on the circuit element such that the circuit element alters its electrical properties.

Abstract: A fuse component (1) comprises a hollow body (2), which is formed from a tubular wall that encloses an inner area (5) and which has two open faces that are situated opposite one another. The fuse component also comprises a fuse-element (4), which extends inside the inner area (5) between both faces of the hollow body (2), and two contact caps (3) each provided with a bottom (7) and lateral walls (8) connected thereto. Two end sections (10) of a conductor of the fuse-element (4) are lead out of the inner area (5) through the faces and around the wall of the hollow body (2). The end sections (10) of the conductor of the fuse-element (4) are fastened by means of an adhesive bond (11) so that the surfaces abutting the inner area (5) are essentially free from organic materials. The end sections (10) of the conductor are preferably fastened to a conductive plastic that, in turn, fastens the contact caps (3) to the outer wall (9) of the hollow body (2).

Abstract: A fuse component (1) includes a hollow body (2) which is formed from a tubular wall that encloses an inner area (5) and which has two open faces that are situated opposite one another. The fuse component also includes a fuse-element (4) which extends inside the inner area (5) between both faces of the hollow body (2) and two contact caps (3) each provided with a bottom (7) and lateral walls (8) connected thereto. Two end section (10) of a conductor of the fuse-element (4) are led out of the inner area (5) through the faces and around the wall of the hollow body (2). The end sections (10) of the conductor of the fuse element (4) are fastened by an adhesive bond (11) so that the surfaces abutting the inner area (5) are essentially free from organic materials. The end sections (10) of the conductor are preferably fastened to a conductive plastic that, in turn, fastens the contact caps (3) to the outer wall (9) of the hollow body (2).

Abstract: A fusible conductor for a fuse element includes an electrically insulating core a fusible wire wound about the core and at least one electrically insulating fiber wound about the core parallel to the fusible wire such that the fusible wire is fixed in position so that a short circuit of adjacent turns of the fusible wire is prevented.

Abstract: The invention relates to a method for producing a protective component, for example a fuse component or a fusing resistor, including a fusible element and a heating element, which are attached as stacking components to the surface of a substrate. The fusible element is configured in such a way that a current flow between its connections is interrupted, if the fusible component is heated, at least in one fusible region, for a predetermined time period to above a predetermined temperature. The fusible element and the heating element are arranged on the substrate in such a way, that heat created by the heating element is transported to the fusible element and the current flow through the heating element exceeds a threshold value for a predetermined time period. During production, the heating element is positioned next to the fusible element, at a predetermined distance from it.

Abstract: A fuse component (1) has a fusible conductor (2) which extends in a gas filled cavity (3) within a cylindrical tube (4) between two end surfaces (8). Two end caps (5) of an electrically conductive material are applied to the ends of the tube (4) so that an electrical contact is produced with the fusible conductor (2). At at least one of the two ends of the tube (4), a sealing body of a plastic material, which is predominantly elastically compressible but at the same time capable of creep, is introduced into a gap between the base of the end cap and the end surface (8) of the tube (4) and into a portion of the cavity adjacent to the cap base. The sealing body has been compressed between the end surface (8) and the cap base during the manufacture of the fuse component (1) when positioning the end cap (5). The compressed sealing body (7) attempts to expand again, whereby it expands principally into the cavity (3).

Abstract: A fusible spiral conductor for a fuse component includes an electrically insulating or high resistance core, at least one fusible conductive wire wound around the core, and a temperature-resistant plastic material. The temperature-resistant plastic material applied to the core and arranged such that at least the surface regions of the core exposed between the fusible conductive wire are covered by the plastic material and the interstices defined between the wound fusible conductive wire and the surface of the core are substantially filled with the plastic material.

Abstract: A fuse element includes a fusible conductor which extends within a gas filled cavity in a cylindrical tube. The fuse element includes a cylindrical tube comprising, an electrical insulator between two end faces of the tube, two end caps of an electrically conductive material being applied to the two ends of the tube such that an electrical contact is produced with the fusible conductor. At least one respective sealing element is inserted in at least one of the two ends in a space between the cap base and the end face of the tube and/or into a portion of the cavity of the tube adjacent to the end face such that one or more pressure balancing passages remain between the gas filled cavity within the tube and the external surroundings of the fuse element. The one or more pressure balancing passages are of such small cross-section that changes in pressure in the cavity are balanced only very slowly.

Abstract: The present invention relates to an electrical fuse element having an essentially ceramic housing which, in the unfired state, is closed around at least one fusible conductor. To improve the properties of such a fuse element with respect to the extremely high internal pressures occurring during switching off as well as when exposed to an arc, a fuse element (5) in which the fusible conductor (1) has an electrically conducting component, in particular a metallic wire (2), and an insulating, porous component is proposed.

Abstract: An electrical fuse element (1), which comprises a substrate (4) with two contacts (2) arranged on opposite end sides (3), terminal areas (7) connected to the contacts and a fusible conductor (10) electrically connected in a conducting manner to the contacts via the terminal areas, is developed for use in higher voltage ranges, with improved breaking capacity and with low production costs, by the terminal areas (7) and the fusible conductor (10) being arranged separated from one another by an insulator (4) and electrically connected to one another via lead-throughs.

Abstract: The present invention relates to an electrical fuse element (1) which comprises at least one fusible conductor (3) and a carrier (2). The object is to provide a fuse element (1) for all known tripping characteristics in a cost-effective production technique for the middle and low-current range. Furthermore, by means of a small outer geometry, the fuse element (1) is to be adaptable to modem methods of insertion. The way in which this object is achieved according to the invention is that the carrier (2) consists of a material of poor thermal conduction, in particular of a glass ceramic.

Abstract: A fuse includes at least one ceramic part at least partially surrounded by a sinterable mass coating that is electrically conductive after a sintering process. The sinterable mass coating is disposed in the vicinity of the two remote sides of the first part. The fuse also includes a second part firmly connected to the first part by the mass coating. The second part has an electrically conductive surface and a fuse element. A method for manufacturing a blowout fuse includes fixing a first part of the fuse made from metal or a ceramic material to a second part of the fuse made from metal or a ceramic material using a sinterable mass. This method includes the steps of applying a mass to be fixed by sintering to at least one portion of the surface of the first part and/or one portion of the surface of the second part. The mass acts as an intermediate layer between the two parts to be connected and wholly or partially covers both surfaces.

Abstract: An electrical fuse having an insulator, through which a cavity extends from one end to the facing end and which has a cross-sectionally square or rectangular casing part, is further developed in such a way that in the case of easy manufacture a reliable sealing of the cavity openings and a reliable fixing of the fuse element ends, as well as the connections or terminals to the end portions of the insulator are ensured, particularly in such a way that connections projecting over the insulator profile are avoided. For this purpose the insulator has on at least one side an offset end portion of constant cross-section. The fuse is in each case provided with a solder coating at least covering the ends of the end portions, has electrical connections and also a fuse element, which passes through the cavity and whose ends are in each case conductively connected to the electrical connections.

Abstract: The invention relates to an electric fuse with a fuse element located in a housing which encases a fuse element chamber. The fuse element melts and thus cuts out the fuse under an overcharge, whereby the temperature and pressure in the interior of the casing will abruptly rise. The housing is provided with a pressure relief means through which at least part of the gas volume can be let off to the outside to prevent the housing from destruction if high internal pressure peak values occur on cutting out the fuse.

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 sub-miniature fuse having a fusible conductor which will fuse under an over-current condition within a pressure-tight chamber. A metal surface is positioned near the fusible conductor within the chamber and is formed and positioned relative to the fusible conductor so that during the switching off of the fuse, any arc created between the fused ends jumps over to the metal surface. Thus, at least one secondary arc is created which burns against the metal surface as a shunt line. By melting a part of the metal surface, sufficient heat is absorbed that the secondary arc is quenched.

Abstract: An electrical fuse comprises a fusible conductor welded or bonded onto separated contact surfaces. The fusible conductor is coated with a metal, selected solely for optimum welding or bonding to contact zones of the contact surfaces. The metallic coating of the fusible conductor is then removed at the fusible portion of the coated fusible conductor by etching after the fusible conductor is welded or bonded to the contact surfaces the contact zones surrounding the point of contact protected by a resin cover resistant to the etchant. The electrical characteristic of the fuse is thus determined solely by the core wire and its properties. The resin cover in the contact zones is preserved between the fusible conductor and each contact surface for improved safety against cracks or micro-cracks and their possible adverse effects.

Abstract: The invention relates to a method for the production of a sub-miniature fuse, as well as to a sub-miniature fuse. Known casing with three chambers and a separate cover are difficult to manufacture and are prone to faults due to their complicated shape. According to the invention, an internally substantially smooth surface and externally cylindrical casing is formed, preferably from identical tube halves, whose end faces are closed either by correspondingly constructed connecting electrodes or by concomitantly shaped end walls, the electrodes always carrying the fuse wire on their inside and the connecting leads on their outside. Preference is given to the use of an intermediate member, which encloses the electrodes and the fuse wire fixed thereto. In each case production is simplified. There is also no need for shrink-on tubes for the insulation of contact caps.

Abstract: A sub-miniature fuse comprises a plastic base, and two conductors passing through the base and being bridged by a fuse wire soldered to the conductors. For obtaining a reliable fixture of the fuse wire to the conductors a fuse wire holder is formed on each of these conductors above the base and the connection between said holder and the fuse wire positioned in the latter is secured by melting on soft solder material. It is particularly advantageous to construct the holder by rolling up or bending over the upper end of each conductor.