High-voltage switch with a first terminal contact connected to a first fixed contact, a second terminal contact connected to a second fixed contact, a bridge contact arranged between the first fixed contact and the second fixed contact and connecting the first fixed contact to the second fixed contact, the bridge contact being pressed against at least one of the fixed contacts with a contact pressing force and being able to be released from at least one of the fixed contacts with a pull-off force, and a drive acting on the bridge contact in the direction of the pull-off force. A measuring circuit senses a voltage drop between the fixed contacts in case of levitation between at least one fixed contact and the bridge contact and depending on the sensed voltage drop controls the drive in such a way that the drive acts on the bridge contact with a force in the direction of the pull-off force.

High-voltage switch with a first terminal contact connected to a first fixed contact, a second terminal contact connected to a second fixed contact, a bridge contact arranged between the first fixed contact and the second fixed contact and connecting the first fixed contact to the second fixed contact, the bridge contact being pressed against at least one of the fixed contacts with a contact pressing force and being able to be released from at least one of the fixed contacts with a pull-off force, and a drive acting on the bridge contact in the direction of the pull-off force. A measuring circuit senses a voltage drop between the fixed contacts in case of levitation between at least one fixed contact and the bridge contact and depending on the sensed voltage drop controls the drive in such a way that the drive acts on the bridge contact with a force in the direction of the pull-off force.

Electrical switching devices are disclosed that have pressure relief mechanisms to allow for the release of internal pressure within the switching device housing. The pressure within the housing can be caused by different events with one such event being internal arcing within the housing caused during operation of the housing's internal components. Is some cases the arcing can be caused during separation of the switching device contacts. The pressure relief mechanism allows for the high pressure to pass from the housing in a more controlled matter to minimize or prevent high pressure breach or rupture of the switching device housing. The pressure relief mechanisms are particularly applicable to switching devices with hermetically sealed housings. Many different pressure relief mechanisms can be used including rupture disks or engineered weak points in the switching device housing.

A system including a vehicle having a motive electrical power path; a power distribution unit having a current protection circuit disposed in the motive electrical power path, the current protection circuit including: a first leg of the current protection circuit comprising a first pyro-fuse; a second leg of the current protection circuit comprising a thermal fuse in series arrangement with a second pyro-fuse; and where the first leg and the second leg are coupled in a parallel arrangement; a controller, including: a current detection circuit structured to determine a current flow through the motive electrical power path; and a pyro-fuse activation circuit structured to provide a pyro-fuse activation command in response to the current flow exceeding a threshold current flow value; and where at least one of the first pyro-fuse and the second pyro-fuse is responsive to the pyro-fuse activation command.

An electrical heating device, in particular for a vehicle, includes a heat exchanger body, with a heat transfer surface and an at least partially closed cavity. The at least partially closed cavity has a wall section that at least partially delimits the at least partially closed cavity that is adjacent to the heat transfer surface. A pyrotechnical charge is arranged in the at least partially closed cavity, and the at least partially closed cavity has a further wall section delimiting the at least partially closed cavity at least partially and to which an electrical connection line of the electrical heating device is adjacent.

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. In another example, the conductor portion includes a first conductor plate arranged on the front face of one end portion of the rod-like projectile, and a second conductor plate and a third conductor plate coupled, at a corresponding one of edge portions of the second conductor plate and the third conductor plate, to respective opposing edge portions of the first conductor plate.

Provided is a current breaker for an aerial vehicle that can prevent occurrence of a minor collision of propellers or other components in operation with a person and can prevent occurrence of a deployment failure of a lift generating member at a crash of the aerial vehicle. A current breaker 100 for an aerial vehicle includes a rupture plate 23 that disconnects a current supply path 30 that electrically connects an electric device and an electric circuit, an igniter 10 that damages the rupture plate 23 by directly or indirectly applying a destructive force (heat and pressure) toward the current supply path 30 with respect to the rupture plate 23, and disconnects the current supply path 30 by the rupture plate 23 that has been damaged, and a controller 24 that drives the igniter 10 upon detection of an abnormality.

Provided is a current breaker for an aerial vehicle that can prevent occurrence of a minor collision of propellers or other components in operation with a person and can prevent occurrence of a deployment failure of a lift generating member at a crash of the aerial vehicle. A current breaker 100 for an aerial vehicle includes a rupture plate 23 that disconnects a current supply path 30 that electrically connects an electric device and an electric circuit, an igniter 10 that damages the rupture plate 23 by directly or indirectly applying a destructive force (heat and pressure) toward the current supply path 30 with respect to the rupture plate 23, and disconnects the current supply path 30 by the rupture plate 23 that has been damaged, and a controller 24 that drives the igniter 10 upon detection of an abnormality.

The present application relates to an electric circuit breaker device and has an object to reduce in size while maintaining a required strength. The electric circuit breaker device includes, in a resin housing (10), an igniter (20), a rod-like projectile (40), a conductor portion (50), which are disposed in this order from a first end portion (11) of the housing toward a second end portion (12) opposite the first end portion in an axial direction, and an insulating closed space (60) between the second end portion of the housing and the conductor portion, wherein the conductor portion is a plate portion including connection portions (51, 52) on both end sides; and a cut portion (53) at an intermediate portion, the conductor portion extending in a width direction orthogonal to a housing axial direction, the rod-like projectile is disposed to face the cut portion in the axial direction, and the cut portion includes fragile portions (55a, 55b) formed at two locations on the second end portion side of the conductor portion, each of the fragile portions being a notch portion.

The present application relates to an electric circuit breaker device and has an object to reduce in size while maintaining a required strength. The electric circuit breaker device includes, in a resin housing (10), an igniter (20), a rod-like projectile (40), a conductor portion (50), which are disposed in this order from a first end portion (11) of the housing toward a second end portion (12) opposite the first end portion in an axial direction, and an insulating closed space (60) between the second end portion of the housing and the conductor portion, wherein the conductor portion is a plate portion including connection portions (51, 52) on both end sides; and a cut portion (53) at an intermediate portion, the conductor portion extending in a width direction orthogonal to a housing axial direction, the rod-like projectile is disposed to face the cut portion in the axial direction, and the cut portion includes fragile portions (55a, 55b) formed at two locations on the second end portion side of the conductor portion, each of the fragile portions being a notch portion.