The invention relates to a current breaker in which a busbar (18) passes through a cavity (25) in which a piston (14) can be moved. By moving the piston (14), a circuit board (19) is broken out of the busbar (18), thus interrupting the current flow. The current breaker has at least one metal filter element (16) which, according to the invention, extends up to the cavity (25). This ensures that the disconnected circuit board (19) touches the at least one filter element (16) during tripping. After the circuit board (19) is separated from the busbar (18), an electric arc is formed which, due to the filter element (16) being touched by the circuit board (19), switches over to the metal filter element (16) when the circuit board (19) continues to move, as a result of which the energy from the system inductance is converted into heat loss in the filter element (16). When suitably designed, there is only a moderate increase in pressure in the current breaker and thus practically no external effect. Additionally, an extinguishing agent, e.g. a silicone oil or a silicone-containing grease, may be provided. The housing can be sealed and the filter elements (16, 16′) can be insulated from the exterior.

A circuit breaker system is provided; the circuit breaker system comprises of a transformer, a capacitor, a pulse generator, a EBWF fuse and a VCB, the circuit breaker system can interrupt rated load current, overload current, surge load current and short-circuit load current within 100 microseconds. The on-state voltage drop of the circuit breaker system is below 0.1V. The circuit breaker system interrupts load current by injecting a non-resonant pulse current to reduce the current between the contacts of the VCB, and circuit breaker system interrupts higher load current by detonating the EBWF fuse to force an open-circuit. The EBWF fuse comprises a detonator in the low terminal and a contacting bellows in the upper terminal. The EBWF fuse can be engaged and dis-engaged by a fuse holder system.

Summary

The present invention relates to a process for providing a predetermined pyrotechnic energy output, comprising a pyrotechnic material that pyrotechnically converts at a material-specific conversion temperature, and communicating heat to the pyrotechnic material to convert the pyrotechnic material at an ambient temperature of the pyrotechnic material that is less than the conversion temperature.

A circuit breaker system is provided; the circuit breaker system comprises of a transformer, a capacitor, a pulse generator, a EBWF fuse and a VCB, the circuit breaker system can interrupt rated load current, overload current, surge load current and short-circuit load current within 100 microseconds. The on-state voltage drop of the circuit breaker system is below 0.1V. The circuit breaker system interrupts load current by injecting a non-resonant pulse current to reduce the current between the contacts of the VCB, and circuit breaker system interrupts higher load current by detonating the EBWF fuse to force an open-circuit. The EBWF fuse comprises a detonator in the low terminal and a contacting bellows in the upper terminal. The EBWF fuse can be engaged and dis-engaged by a fuse holder system.

Exemplary electrical disconnects may include a housing defining a first access at a first end of the housing and a second access at a second end of the housing. The second access may extend vertically along a height of the housing beyond a vertical location of the first access. The electrical disconnects may include a busbar characterized by a first segment and a second segment. The first segment and the second segment may be coupled at a break section of the busbar. The first segment of the busbar may extend through the first access of the housing. The second segment of the busbar may extend through the second access of the housing. The electrical disconnects may include a pyrotechnic initiator disposed within the housing. The electrical disconnects may include a blade laterally aligned with the break section of the busbar. The electrical disconnects may include a plunger within which the blade is seated.

The present invention relates to a quick circuit breaker, that is, a switch with which an electrical circuit can be disconnected particularly quickly. Such switches are occasionally also referred to as pyrotechnic disconnect devices or as electrical interrupting switching elements. In particular, it is a quick circuit breaker (10) which comprises a current supply contact and a current discharge contact which are connected by a conductor (20) and in which the conductor (20) is guided through a separation chamber (12) and an expansion vessel (18) being provided in the separation chamber (12), the expansion vessel (18) being able to be expanded by an explosive charge. It is further about a method for emergency disconnection of a circuit.

A fuse device comprising a housing, at least two connection lugs, a connecting element between the connection lugs, and an actuator. The actuator moves the connecting element from a closed position, in which it connects the connection lugs, to an open position, in which it is disconnected from at least one of the connection tabs. A particularly well-conducting connection between the connection lugs and the connecting element, which can nevertheless be easily disconnected by the actuator, is achieved by the connecting element being interference-fitted between the connection lugs.

A switch includes: an actuator; a conductor having a length extending between two ends and a width extending between two sides, the conductor having a connection contact at either end and at least one switching region disposed between the connection contacts, each switching region extending between two sides of the conductor and including: a hole through the conductor, at least one shearable portion bounded by the hole and a nearest of the two sides of the conductor, and an insert conductor inserted into the hole and in electrical contact with the conductor, via the hole, such that a current conduction path is defined along the length of the conductor via the insert conductor and the at least one shearable portion of each switching region; and a moveable member aligned with the at least one switching region and arranged to move in a first direction.

The present invention provides an electric circuit breaker device that can be downsized by reducing the distance the moving body moves. A electric circuit breaker device includes: a housing; a part to be cut that is placed inside the housing and forms a part of an electric circuit; and a power source P placed on the side of a first end part of the housing, the electric circuit breaker device further includes a moving body that includes a first arc-extinguishing space X1 in which the part to be cut is inserted and housed, and which is filled with an arc-extinguishing material M, wherein the housing includes a moving body housing part that allows the moving body to move between the first end part and a second end part opposite to the first end part, the moving body is configured to cut the part to be cut housed in the first arc-extinguishing space X1 of the moving body while moving from the first end part toward the second end part by the power source P, and the housing includes an expanded arc-extinguishing space X2 positioned so as to face an end part of a separable piece of the part to be cut that is cut off and separated, when the moving body has moved and stopped, and the expanded arc-extinguishing space X2 being filled with an arc-extinguishing material M.

In an in-vehicle shutdown device, only a pyro-fuse is provided on one line of a positive-side line and a negative-side line as a device that shuts off the one line, and a breaker of a different type from the pyro-fuse, which is operable to be switched by a control signal to shut off and stop shut-off of the other line, is provided on the other line. A controller controls the pyro-fuse to cut the one line in the event of an abnormality that the breaker is stuck closed.