A switching device having a damping element for a contact system during abrupt switching on, wherein the contact system has a contact slide and a switching piece movably guided therein, and the movable switching piece is mounted opposite a fixed switching piece, where the contact slide has at least one projection that is operatively connected to the damping element when the switching device is switched on abruptly.

An actuating device for a vacuum switching tube has a connecting element which can be connected to an electric contact of the vacuum switching tube, an electromagnetic actuating device for displacing the connecting element between a first and a second position, and a retaining yoke, relative to which the connecting element can be displaced and has a first magnetic element. The first magnetic element generates a first and a second magnetic circuit in the retaining yoke. The actuating device further has a ferromagnetic retaining anchor, which is arranged on the connecting element. The retaining anchor is located in the first position of the connecting element in the first magnetic circuit and in the second position of the connecting element in the second magnetic circuit. The connecting element is held in the first and in the second position by a respective magnetic force between the retaining yoke and the retaining anchor.

An actuating device for a vacuum switching tube has a connecting element which can be connected to an electric contact of the vacuum switching tube, an electromagnetic actuating device for displacing the connecting element between a first and a second position, and a retaining yoke, relative to which the connecting element can be displaced and has a first magnetic element. The first magnetic element generates a first and a second magnetic circuit in the retaining yoke. The actuating device further has a ferromagnetic retaining anchor, which is arranged on the connecting element. The retaining anchor is located in the first position of the connecting element in the first magnetic circuit and in the second position of the connecting element in the second magnetic circuit. The connecting element is held in the first and in the second position by a respective magnetic force between the retaining yoke and the retaining anchor.

In some embodiments, a DC relay includes a pair of fixed contacts fixedly installed on one side of a frame, a movable contact movably installed below the pair of fixed contacts and brought into contact with the pair of fixed contacts or separated therefrom, an insulating plate installed below the movable contact, a contact spring provided between the movable contact and the insulating plate, a plate installed below the insulating plate and including a through hole formed in a central portion thereof, a fixed core inserted from above the plate through the through hole and including a shaft hole formed at the center thereof, an anti-noise pad provided between the fixed core and the insulating plate, a movable core installed to be linearly movable below the fixed core, and a shaft installed to penetrate through the through hole.

An electromagnetic relay including: an electromagnet; an armature that swings by energization and non-energization of the electromagnet; a first fixed terminal on which a first fixed contact is mounted; a first movable spring on which a first movable contact opposite to the first fixed contact is mounted, and that is fixed to the armature; a second movable spring that moves along with the first movable spring in response to the swinging of the armature; and an elastic member that is mounted on at least one of the first movable spring and the second movable spring, and is disposed between the first movable spring and the second movable spring.

A self-holding magnet has a spring (accumulator spring) and a first armature. The self-holding magnet is capable of holding the first magnet armature against the spring force in a lift position which is determined by a stop. The stop determines a remaining air gap of a working air gap. The magnetic circuit of the self-holding magnet has a magnetic shunt with particularly low reluctance of the same order of magnitude as a series reluctance of the remaining working air gap(s). The working air gap(s) and the shunt are magnetically connected in parallel with the flow generated by a permanent magnet but in series with the flow generated by the trigger coil. The self-holding magnet additionally has at least one positive feedback device such as a compressible resilient stop or a shunt.

A self-holding magnet has a spring (accumulator spring) and a first armature. The self-holding magnet is capable of holding the first magnet armature against the spring force in a lift position which is determined by a stop. The stop determines a remaining air gap of a working air gap. The magnetic circuit of the self-holding magnet has a magnetic shunt with particularly low reluctance of the same order of magnitude as a series reluctance of the remaining working air gap(s). The working air gap(s) and the shunt are magnetically connected in parallel with the flow generated by a permanent magnet but in series with the flow generated by the trigger coil. The self-holding magnet additionally has at least one positive feedback device such as a compressible resilient stop or a shunt.

An electromagnetic relay includes an electromagnet device, an armature and a fixed terminal. By coil current through a coil, the electromagnet device generates first magnetic flux that forces the armature and the electromagnet device together or apart in a first end in a first direction of the armature. The armature is connected with a movable contact at a second end of the first direction and forces the movable contact and a fixed contact together or apart according to coil current. The fixed terminal is electrically connected with the fixed contact, and provided around the armature so as to cross the armature as seen from a second direction perpendicular to the first direction with the armature closing the fixed and movable contacts. Electric current through the fixed terminal generates a second magnetic flux in the armature, a direction of which is opposite to that of the first magnetic flux.

An electromagnetic relay includes an electromagnet device, an armature and a fixed terminal. By coil current through a coil, the electromagnet device generates first magnetic flux that forces the armature and the electromagnet device together or apart in a first end in a first direction of the armature. The armature is connected with a movable contact at a second end of the first direction and forces the movable contact and a fixed contact together or apart according to coil current. The fixed terminal is electrically connected with the fixed contact, and provided around the armature so as to cross the armature as seen from a second direction perpendicular to the first direction with the armature closing the fixed and movable contacts. Electric current through the fixed terminal generates a second magnetic flux in the armature, a direction of which is opposite to that of the first magnetic flux.

An electrical switch element is disclosed. The electrical switch element has a switch chamber having contacts and an opening, a propulsion element extending through the opening in the switch chamber and having an annular flange, and a seal having an annular protrusion surrounding the opening. The propulsion element is movable within the opening to open or close the contacts, and in an end position of the propulsion element, the annular flange abuts the annular protrusion.