Abstract: A plunger switch for use as a switch element in an electrical circuit, has a housing and a plunger movable axially in a bore of the housing in the direction of a longitudinal axis and when in an operating position in which it is depressed toward the housing, acts on an electronic sensor unit situated in the housing, which in turn initiates a switching procedure in the electrical circuit by electrical pulses, and the plunger, in its axial plunging region into the bore of the housing, is peripherally provided with at least one lubricating groove, which permits a lubricating fluid to travel into the axial plunging region between the plunger and bore, and the electronic sensor unit is protected from a penetration of lubricating fluid.

Abstract: A plunger switch for use as a switch element in an electrical circuit, has a housing and a plunger movable axially in a bore of the housing in the direction of a longitudinal axis and when in an operating position in which it is depressed toward the housing, acts on an electronic sensor unit situated in the housing, which in turn initiates a switching procedure in the electrical circuit by electrical pulses, and the plunger, in its axial plunging region into the bore of the housing, is peripherally provided with at least one lubricating groove, which permits a lubricating fluid to travel into the axial plunging region between the plunger and bore, and the electronic sensor unit is protected from a penetration of lubricating fluid.

Abstract: On a bistable relay, in particular for the high-current range, having a coil arrangement and a movable armature, which armature is attracted or repelled by the magnetic flux that can be generated in the coil arrangement and in the process opens or closes contacts, and in the relay, at least one retention element is provided, with which the armature is fixable in its position, an electric reservoir is provided, with the energy of which the armature is movable into an OFF position of the relay.

Abstract: A relay has a coil housing with a coil arrangement and a movable armature, which by a magnetic flux be generated in the coil arrangement by a coil current, permits or interrupts a flow of current via two main contact terminals; and a control unit in the coil housing for controls the coil current,