Abstract: The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. The at least one fusible conductor has a plurality of conventional electrical bottlenecks, which are designed for the rated load of the respective fuse. At least one further additional geometric bottleneck is provided, which is disconnectable by rupturing depending on the trigger unit when applied by tension.

Abstract: A pyro igniter circuit and a method for testing the same is provided. The pyro igniter circuit includes a supervisory circuit configured to: transmit a test signal having a pulse duration time below an igniter activation pulse time of a pyro igniter disconnect element and/or an ignition control signal, in response to the transmitted test signal, has an amplitude below an igniter activation amplitude of the pyro igniter disconnect element; and receive a diagnostic response signal in response to the transmitted test signal.

Abstract: The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. By way of example, an arc quenching medium-free region is formed in the housing such that the at least one fusible conductor is exposed, and a mechanical disconnection element can be introduced into the arc quenching medium-free region via an access point in the housing in order to mechanically destroy the at least one fusible conductor depending on the trigger device, and independently of its melting integral.

Abstract: To provide an electric circuit breaker device including a conduction part that can be easily cut. An electric circuit breaker device includes a housing made of synthetic resin, a rod-like projectile made of synthetic resin and arranged in the housing, a conductor portion arranged in the housing to extend across a front face of one end portion of the rod-like projectile, and an igniter arranged in the housing to face another end portion of the rod-like projectile and configured to generate pressure to fire the rod-like projectile toward the conductor portion. In one embodiment, the conductor portion includes a first conductor plate extending across the front face of the one end portion of the rod-like projectile and including a recess portion, and a second conductor plate coupled to the recess portion of the first conductor plate.

Abstract: Pyrotechnic switch (1) including: at least a first circuit portion (10) with two connection terminals (11a, 11b), arranged to be part of an electrical circuit, a mobile body (20), arranged to pass from a first position to a second position, and thereby cause an opening of the first circuit portion (10), a pyrotechnic actuator, arranged to control the movement of the mobile body (20) from the first to the second position, a fuse element (30) such as a fuse, arranged to interrupt an electric current passing between the terminals of the first circuit portion (11a, 11b), characterized in that the fuse element (30) is isolated from at least one of the terminals of the first circuit portion (11a, 11b) when the mobile body (20) is in the first position.

Abstract: An electric circuit breaker device includes in a housing, an igniter, a rod-like projectile, and a conductor portion configured to form a portion of an electric circuit disposed in a cylindrical space formed in the housing; and an insulating closed space formed between a second end portion of the housing and the conductor portion. The conductor portion is a plate portion having first and second connection portions at opposing ends and a cut portion in an intermediate portion between the first and second connection portions. A surface of the cut portion is orientated orthogonal to the housing axial direction; the rod-like projectile is disposed aligned with a surface of the cut portion in the housing axial direction; and a width (W1) of the insulating closed space and a width (W2) of an end portion of the rod-like projectile have relationships W1>W2 and W1?W2?0.25 mm.

Abstract: A battery module is disclosed. In one aspect, the battery module includes: a plurality of rechargeable batteries electrically connected to each other, wherein each of the rechargeable batteries comprises a first short-circuit generator configured to be short-circuited based on an increase in battery internal pressure. The battery module also includes a positive electrode and a negative electrode respectively connected to first and second ones of the rechargeable batteries and a first drawn-out tab and a second drawn-out tab respectively connected to the positive and negative electrodes. The battery module further includes a switch configured to electrically connect the negative electrode and the second drawn-out tab and a second short-circuit generator electrically connected to the switch, wherein the second short-circuit generator overlaps, in the height dimension of each of the rechargeable batteries, the first short-circuit generator of the second rechargeable battery.

Abstract: The embodiment of the present disclosure provides a cutout which can comprise a top contact assembly being capable of electrically coupled with a first electric cable; a bottom contact assembly being capable of electrically coupled with a second electric cable; an insulator assembly secured to the top contact assembly in a first end thereof, and secured to the bottom assembly in a second end thereof opposite to the first end; and a tube assembly having a fuselink placed therein for conducting electricity between the top contact assembly and a bottom contact assembly. The bottom contact assembly has a bottom contact member which is capable of electrically coupled with the second electrical cable at one end thereof, and removeably coupled with the tube assembly at the other end thereof, such that a current path is formed from the second electrical cable to the tube assembly via the bottom contact member.

Abstract: A deactivation device for disconnecting an electrical energy source from a load includes at least two one-time switches. The one-time switches become inoperative upon switching in response to the presence of a load exceeding a critical value, thereby disconnecting an electrical connection. The one time switches are connected in parallel, and the deactivation device is configured in such a way that, except for a one-time switch, which is provided for disconnecting the energy source from the load and for connecting the energy source to the load, the at least one other one-time switch remains open. In the case of an inoperativeness of the one one-time switch, the at least one other one-time switch is used for disconnecting the energy source from the load and for connecting the energy source to the load.

Abstract: A fuse includes an upper shell, a lower shell and a cavity formed by the upper shell and the lower shell; first and second conductors which are respectively disposed between the upper shell and the lower shell. The first ends of each conductors are disposed in the cavity and form a clearance. The second ends of the conductors extend out from the cavity. A conductive bar is welded to the first and second conductors to form a first weld line and a second weld line.

Abstract: An electric circuit breaker apparatus is used in a vehicle including an electric circuit having a converter and a storage battery. The electric circuit breaker apparatus interrupts power supply from the storage battery to the converter when a collision of the vehicle is detected. The electric circuit breaker apparatus includes a power supply circuit breaker driven by a low explosive type actuator, which is actuated when a collision of the vehicle is detected. Actuation of the power supply circuit breaker interrupts a power supply path connecting a positive terminal of the storage battery to the converter and grounds a portion of the power supply path closer to the converter than the interrupted portion.

Abstract: A circuit breaker with a first contact sleeve (3, 14), a second contact sleeve (4, 16), an insulating sleeve (5, 18) disposed between the first contact sleeve (3, 14) and the second contact sleeve (4, 16) has a switching piston (6, 20) with at least one contact section (8) and an isolating section (7, 19), which is disposed at the side of the contact section (8), whereby the switching piston (6, 20) is movable between a closed position in which the contact section (8) of switching piston (6, 20) connects the first contact sleeve (3, 14) with the second contact sleeve (4, 16) so as to be electrically conductive, and an open position in which the contact section (8) of the switching piston (6, 20) does not connect the first contact sleeve (3, 14) with the second contact sleeve (4, 16), in which the first contact sleeve (3, 14), second contact sleeve (4, 16) and insulating sleeve (5, 18) is movable.

Abstract: A pyromechanical disconnecting device, in particular for battery shutoff in a motor vehicle include a housing (1) in which there is arranged a conductor bus (11) that is designed to be severable by a cutting chisel (12) at a predetermined cut point, the cutting chisel being capable of being accelerated by the propellant gases of an ignition element (2). In order to facilitate assembly it is proposed that the housing (1) be extruded around the ignition element (2), which in this way forms one structural unit with the housing (1).

Abstract: A pyromechanical disconnecting device that includes a housing having a receiving space for an ignition element and a supporting floor. A disconnecting tool is disposed in the housing and movable along a path toward a disconnecting point of a current conductor rail. Also disposed in the housing is an ignition element adapted to propel the disconnecting tool along the path to sever the current conductor rail. The ignition element includes an end having a conical flank facing the supporting floor of the housing. An elastic sealing element is arranged about the conical flank and the supporting floor to act as an axial tolerance compensator between the ignition element and the supporting floor of the housing.

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: An apparatus for indicating the proper seating of a high voltage fuse in its mounting assembly in connection with electrical switchgear utlilizes a spring loaded flag positioned adjacent a latching protrusion for engagement by the latch of the mounting assembly such that the flag is moved from an obscured position to an visible position only when the latch is in its affirmatively locked position.

Abstract: A circuit breaker including a pyrotechnic element configured to ablate, tear, or cut a portion of the circuit. The portion of the circuit to be broken may be formed to be readily broken and/or may be a current load-based fuse. Also, the circuit breaker may be configured to ensure predictable progressive lateral tearing of the portion of the circuit to be broken; the circuit breaker may optionally be configured so that substantially all of the pyrotechnic element's output is focused on breaking the circuit; and the circuit breaker may optionally include a positive displacement mechanism that, after actuation of the pyrotechnic igniter, prevents the circuit breaker from inadvertently re-closing.

Abstract: A pyromechanical cutting element has a housing (2) in which an electrical conductor (3) is arranged, a cutting plunger (5) with a cutting tool (8) to cut through the electrical conductor (3), and pyrotechnic charge (13) to drive the cutting plunger (5), with the cutting tool (8) bending over the electrical conductor (3) after cutting through it and forming a bending tongue (18) that sticks out from the conductor (3) in a way that interrupts the conductor (3). The electrical conductor (3) has a cross-sectional area reduction in the longitudinal direction (4) consisting of two transverse sides and two longitudinal sides. The cutting tool (8) first cuts through the cross-sectional area reduction (4) just on one transverse side and upon further advancement bends over the longitudinal sides at least in part, and, upon further advancement, the cutting tool (8) clamps the bending tongue (18) thus created.

Abstract: The invention relates to a pyromechanical disconnecting device having a housing (2) in which an electrical conductor (3) is arranged, having a cutting plunger (5) and a cutting chisel (8) made of plastic arranged thereon for severing the electrical conductor (3), and having a pyrotechnic igniter (1) in which a pyrotechnic charge is arranged for driving the cutting plunger (5), the cutting chisel (8) having an edge that slides along a mating edge of the housing (2) or of a component (4) of the housing (2) when the cutting plunger (5) or the cutting chisel (8) is driven and when the electrical conductor (3) is severed. In order to achieve better cutting power, it is proposed that the edge of the cutting chisel (8) and/or the mating edge of the housing (2) or of a component (4) of the housing (2) comprise an inserted structural element (6, 7) having a greater hardness than plastic.

Abstract: A circuit breaker including a pyrotechnic element configured to ablate or cut a portion of the circuit so as to break the circuit, thereby breaking the circuit. The portion of the circuit to be broken may be specially formed to be readily ablated or cut, and/or may be a current load-based fuse.

Abstract: A pyromechanical disconnecting apparatus, in particular for battery shutoff in a motor vehicle, includes a housing (4) in which there is arranged an electrically conductive conductor bus (2), which is fashioned so as to be severable at a predetermined cut position (1) by a cutting chisel (6) driven by a pyrotechnic propellant charge. The conductor bus (2) is clamped in on its side facing away from the cutting chisel (6) by a locking bolt (5) inserted into the housing (4), and a receiving space (15) is arranged in the locking bolt (5) in the region of the predetermined cut position (1), into which receiving space the cutting chisel (6) bends the region of the conductor bus (2) severed by it, and the locking bolt (5) forms an external surface of the housing (4).

Abstract: The invention relates to a pyrotechnic fuse element having a closed housing consisting of an electrically conductive material, in which an explosive is provided, the housing containing two terminal zones for electric contacting, which are electrically connected by means of the electrically conductive material of the housing, the electric connection of the terminal zones being separable by activating the explosive, and the explosive material being embodied as a deflagrating pyrotechnic substance which is provided in such an amount and is configured such that the electric connection of the terminal zones of the housing is separated in a predetermined time after the deflagrating pyrotechnic substance has been activated.

Abstract: The invention relates to a pyrotechnic fuse element having a closed housing consisting of an electrically conductive material, in which an explosive is provided, the housing containing two terminal zones for electric contacting, which are electrically connected by means of the electrically conductive material of the housing, the electric connection of the terminal zones being separable by activating the explosive, and the explosive material being embodied as a deflagrating pyrotechnic substance which is provided in such an amount and is configured such that the electric connection of the terminal zones of the housing is separated in a predetermined time after the deflagrating pyrotechnic substance has been activated.

Abstract: A modular circuit disconnect device for connection in a circuit comprises a housing, a bus bar electrical conductor terminated on each end for connection in a circuit, an electrical conductor separator mechanism that uses kinetic energy to sever the electrical conductor, and an interface to accept a signal that indicates a condition requiring the electrical conductor to be severed. One embodiment utilizes a pyrotechnic device to sever a bus bar after receipt of a signal.

Abstract: The invention relates to a device for isolating an electric circuit, especially for high current intensities, with a housing (1) in which is provided at least one electrical conductor element (3) which presents an isolating area (9) and which can be wired in such manner into the severable electric circuit that the isolating current path passes over the conductor element (3) and with activatable means(13, 7; 3, 9, 7), provided in or at housing (1) for generating a trigger pressure which acts directly upon the isolating area (9) and/or via a driving surface (17, 23, 39, 41), in its original position, impinging upon the isolating area (9), wherein the isolating area (9) and/or the driving surface (17, 23, 39, 41) is designed in such manner that after activation of the means (13, 7; 3, 9, 7) the isolating area (9) is totally isolated or broken out, or the cross-section of the isolating area (9) is reduced.

Abstract: A circuit breaker includes: a heating portion charged with heating agent and having a conductivity which is arranged between a first connecting terminal connected to a power source side and a second connecting terminal connected to a load side; an ignition portion for causing the heating agent charged in the heating portion to generate heat by igniting an ignition agent; an expandable/contractable elastic member arranged near the heating portion or in contact with the heating portion and pressing the heating portion; an outer container receiving the elastic member, the ignition portion and the heating portion; a pressing operation restricting member preventing the elastic member from being pressed to the heating portion which is melted due to heat of the heating agent; and a heat conduction member bringing any one of the first connecting terminal and the second connecting terminal into contact with the ignition portion.

Abstract: A power circuit breaker has a housing, a fuse element placed in the housing, and a temperature sensitive fuse attached to the fuse element. The fuse element has tab terminals extending from both ends, which are received by trunk terminals connected to an external circuit. The temperature sensitive fuse has a blowout temperature lower than that of the fuse element. The power circuit breaker also has transistors connected to the temperature sensitive fuse. An igniter is placed below the fuse element in the housing, and one of the transistors is connected to the igniter. The temperature sensitive fuse blows out when an excessive current flows through the fuse element, and one of the transistors connected to the igniter is turned on upon the blowout of the temperature sensitive fuse. A gas is jet from the igniter upon turning on the transistor, whereby the tab terminals of the fuse element are disconnected from the trunk terminals.

Abstract: A current sensor 73 detects a current flowing through a first buss bar 11. When a current value detected by the current sensor 73 became equal to or greater than a threshold current value, a CPU 74 outputs a driving control signal to a driving circuit 77, and the driving circuit 77 operates an, ignitor 29 through a second substrate 65 and a terminal 50. Therefore, the ignitor 29 ignites, a second projection 41 is melted by heat of a heating agent 27, a compression spring 34 is expanded and a thermite case 26 jumps up. Thus, electrical connection between the thermite case 26 and the first and second buss bars 11, 19 is interrupted.

Abstract: A circuit breaker device including a first connection terminal, a second connection terminal, a heating portion electrically interconnecting the first connection terminal and the second connection terminal, and a claw lockingly engaged with the heating portion. The claw is configured to be melted by the heating portion to allow the heating portion to move apart from the first connection terminal and the second connection terminal for electrical disconnection.

Abstract: A mechanical fuse and fuse assembly for a power line assembly is designed to fail under a predetermined physical load so as to protect a power line supporting structures and associated equipment. The fuse is a length of frangible metal with a reduced diameter portion, coupled to a housing so as to be placed in tension when placed under a load. The housing has terminations for coupling to power line hardware. The fuse is threaded at one end and has a bolt head at the other end while the housing is provided in two separable portions, one of which is threaded to receive the threaded end of the fuse while the other portion has a through bore to receive the fuse and locate the bolt head. The housing portions are keyed to prevent relative rotation.

Abstract: A bus bar is connected between a battery post and a stud bolt to which an electric power supply wire is connected. An opening is provided in a housing in which an explosive sealing portion is accommodated. Just before the opening, a broken portion of the bus bar is provided. In the broken portion, a recess portion is formed, and this portion of the broken portion is thin. On both sides of the broken portion, a cutout portions are formed. In case of emergency, electric current generates in a trigger wire, and an explosive in the explosive sealing portion is exploded. An explosive force is directed to the opening of the housing, and the broken portion located just before the opening receives the explosive force forward. Due to the foregoing, the recess portion is broken and both broken pieces are bent at the cutout portions and opened being separated from each other. In this way, an electric power supply circuit is shut off.

Abstract: A fusion apparatus is equipped with a fuse, a solid combustion agent, an igniting device, and a spring. The solid combustion agent and the igniting device are accommodated within an inner casing. The inner casing is disposed in the vicinity of, or in contact with, the fuse. The inner casing and the fuse are covered by an outer casing. The spring is disposed between the outer casing and the inner casing and urges the inner casing containing the solid combustion agent therein toward the fuse. When the igniting device receives a current supplied from the outside, the solid combustion agent is combusted by the ignition made by the igniting device and the resulting combustion heat softens the fuse. At this time, since the inner casing is pressing the fuse by means of the spring, the fuse is easily broken.

Abstract: The response time of a melting fuse is controlled or influenced by temporarily boosting a threshold level from a first constant value (I.sub.1) to a second dynamic value (I.sub.2) which is then caused to decay in a controlled manner during a fixed time between (t.sub.1) and (t.sub.2) and in accordance with a selectable decay function. If a current (m) flowing through the fuse exceeds the decaying threshold value a fuse blowing current is generated and supplied to the fuse, whereby the fuse blows sooner than it would have, if the excess current had prevailed for a long enough time between (t.sub.1) and (t.sub.X). On the other hand, the fuse does not blow in response to short duration transient excess currents that occur, for example at starting an engine. The engine start impulse which may be used to temporarily raise the threshold value from (I.sub.1) to (I.sub.2) and then cause said controlled decay.

Abstract: An in-line cutout comprises an elongated insulator having high tensile strength to support a length of cable between poles. Electrically conductive caps are secured to the ends of the insulator, and a fusible link is connected between the caps. One cap is electrically connected to the main line and the other cap is secured physically and electrically to the end of a branch line.