A contact bounce reduction system including: a movable member, and a contact bounce damping device including: a body, a first ball and a second ball, a first resilient member and a second resilient member, a piston. The first resilient member holds the first ball in the seat and the second resilient member holds the second ball in the seat when the piston is in a default extended position, and a third resilient member biases the piston towards the default extended position. The movable member actuates the piston towards the retracted position, causing the first ball and the second ball to move radially out from the seat, and the third resilient member to accumulate energy.

A switching device for an on-board electrical system of an electrically driven motor vehicle includes an electromechanical switch which is designed to connect and interrupt a supply line of the on-board electrical system. The electromechanical switch has: a stationary first switching contact, a movable second switching contact, and an actuation unit which has a mechanical force-transmitting element and a drive element. In order to switch from an open switching state to a closed switching state of the electromechanical switch, the drive element moves the transmitting element along a movement path, and the force-transmitting element moved along the movement path acts mechanically on the second switching contact and moves the second switching contact toward the first switching contact. In order to maintain the closed switching state of the electromechanical switch, the force-transmitting element applies, at the end of the movement path, a pressing force to the second switching contact for pressing against the first switching contact, without further driving by way of the drive element.

A contact apparatus includes a base body, two fixed contacts, and a moving contact component. The base body has an inner cavity. The two fixed contacts are fastened to the base body at intervals and extend into the inner cavity of the base body. The moving contact component includes a pushing member and a moving contact. The pushing member is movably disposed through the base body. The moving contact is mounted on the pushing member and is located in the inner cavity of the base body. The pushing member is configured to drive the moving contact to move, so that the moving contact is in contact with or is separated from the two fixed contacts.

A switching device includes at least one main contactor, a control power supply and an actuator configured to cause the main contactor to change from an open to a closed state against a force generated by the spring. The contactor has a blade and at least one terminal, the blade being configured to assume a position in contact with the terminal and a position not in contact with the terminal. The switching device includes a detection system configured to determine the contact or non-contact blade position of the main contactor, to generate at least one second signal as a function of the determined blade position of the main contactor and to transmit the second signal to the control power supply. The control power supply is configured to generate a control signal configured to keep the main contactor in the closed state upon reception of the second signal.

The present invention relates to a contact unit for changing over between winding taps on a control winding of a tapped transformer. Such a contact unit can be used particularly preferably for electrical switchgear in high-voltage engineering, such as selector switches or changeover switches. A common feature of both kinds of device in this case is that the changeover between the winding taps on the control winding of the tapped transformer is accomplished without load current. The general inventive concept is to include the contact element of the contact unit in a separate contact housing, so that the contact element and the contact housing form a separate assembly and so that the contact housing, including the contact element, can be fixed in a recess provided in the contact mounting by means of a retaining element.

The present invention relates to a contact unit for changing over between winding taps on a control winding of a tapped transformer. Such a contact unit can be used particularly preferably for electrical switchgear in high-voltage engineering, such as selector switches or changeover switches. A common feature of both kinds of device in this case is that the changeover between the winding taps on the control winding of the tapped transformer is accomplished without load current. The general inventive concept is to include the contact element of the contact unit in a separate contact housing, so that the contact element and the contact housing form a separate assembly and so that the contact housing, including the contact element, can be fixed in a recess provided in the contact mounting by means of a retaining element.

A contact has a flat surface and a side surface that is parallel to the flat surface. At least a part of the side surface is curved so as to swell. At least a part of the contact is able to be elastically deformed in parallel to the flat surface.

A contact has a flat surface and a side surface that is parallel to the flat surface. At least a part of the side surface is curved so as to swell. At least a part of the contact is able to be elastically deformed in parallel to the flat surface.

A switch includes: an ignition chamber; a pyrotechnic actuator for releasing gas into the ignition chamber upon ignition; a first conductor and a second conductor, the first and second conductors including connection contacts; a third conductor moveable in a direction from a first position towards a second position upon actuation by the pyrotechnic actuator; and a breakable retaining member for retaining the third conductor in the first position prior to actuation by the pyrotechnic actuator, the retaining member breaking upon actuation of the pyrotechnic actuator to allow movement of the third conductor. In the first position, the third conductor is arranged between, and in electrical and physical contact with, the first and second conductors to define a current conduction path. In the second position, the third conductor is electrically and physically separate from the first and second conductors.

An embodiment relates to a method for closing a switch and a switch for performing the method, the switch having a stationary switch contact including a stationary contact face, a movable switch contact including a movable contact face parallel to the stationary contact face and lying under pressure against the stationary contact face in the closed state, and an elastic transversal offset of the contact faces which ensures that pressure is applied when the contact surfaces lie against each other. To guarantee closing during a short-circuit, a displaceable counter-pressure element is provided which presses against the movable contact face in the open position and at least reduces the transversal offset. The counter-pressure element moves in conjunction with the movable switch contact towards the closed position when the switch closes. The counter-pressure element stops moving during the closing movement, while the movable contact face continues to move into the closed position.