A vacuum interrupter has a toroidal portion at one or both ends that achieves higher dielectric levels and hence higher interruption levels.

A vacuum interrupter has a toroidal portion at one or both ends that achieves higher dielectric levels and hence higher interruption levels.

A coupling bellows includes a first bellows and a second bellows having a higher spring constant than the first bellows. A coupling member is joined to each of the first bellows and the second bellows adjacent to each other, and includes a hole inserted with a movable shaft. A pressing member moves in an axial direction of the movable shaft toward the coupling member along with movement of the movable shaft in the direction in which a movable contactor is separated from a fixed contactor, and presses the coupling member, thereby contracting the second bellows.

A coupling bellows includes a first bellows and a second bellows having a higher spring constant than the first bellows. A coupling member is joined to each of the first bellows and the second bellows adjacent to each other, and includes a hole inserted with a movable shaft. A pressing member moves in an axial direction of the movable shaft toward the coupling member along with movement of the movable shaft in the direction in which a movable contactor is separated from a fixed contactor, and presses the coupling member, thereby contracting the second bellows.

An anti-bounce dampener assembly for dampening the closing impact force between vacuum interrupter contacts. The dampener assembly includes a dampening spring positioned within a contact adapter, a guide tube extending through the contact adapter and the spring, where the guide tube is coupled to a fixed contact stem, and a bolt extending through the guide tube and being rigidly secured to the fixed contact stem. An impact force caused when the vacuum interrupter contacts contact each other when the vacuum interrupter is closed causes the fixed contact stem, the guide tube, the bolt and the vacuum interrupter to move against the bias of the spring and dampen the impact force. A flexible strap is electrically coupled to the fixed contact stem and the contact adapter, and flexes when the stem moves so as to maintain electrical coupling between the fixed contact stem and the contact adapter.

An anti-bounce dampener assembly for dampening the closing impact force between vacuum interrupter contacts. The dampener assembly includes a dampening spring positioned within a contact adapter, a guide tube extending through the contact adapter and the spring, where the guide tube is coupled to a fixed contact stem, and a bolt extending through the guide tube and being rigidly secured to the fixed contact stem. An impact force caused when the vacuum interrupter contacts contact each other when the vacuum interrupter is closed causes the fixed contact stem, the guide tube, the bolt and the vacuum interrupter to move against the bias of the spring and dampen the impact force. A flexible strap is electrically coupled to the fixed contact stem and the contact adapter, and flexes when the stem moves so as to maintain electrical coupling between the fixed contact stem and the contact adapter.

A contact of a vacuum interrupter comprises a contact body portion formed in the shape of a circular plate, having a contact surface in a flat shape on one surface thereof, and provided with a plurality of cut portions formed in a spiral shape from a center of the contact surface toward an outer side in a radial direction, and an inclination area formed between the contact surface and an outer circumferential surface of the contact body portion, wherein the inclination area is provided with multi-stage inclined portions each forming a multi-stage inclination along the outer side of the contact body portion in the radial direction.

A coupling element is provided for an electric switching device wherein the coupling element includes a first switching contact for opening and closing an electric contact by a second switch contact. The coupling element has an oblong winding body having two ends that are opposite in the longitudinal direction of the longitudinal axis thereof, wherein the first switch contact is arranged on one end. The coupling element furthermore includes a rotation body through which the winding body extends and that is provided for coupling to a drive to carry out a rotation movement by the drive, wherein the rotation body includes two sides of which one faces one end (of the winding body and the other faces the other end of the winding body.

A coupling element is provided for an electric switching device wherein the coupling element includes a first switching contact for opening and closing an electric contact by a second switch contact. The coupling element has an oblong winding body having two ends that are opposite in the longitudinal direction of the longitudinal axis thereof, wherein the first switch contact is arranged on one end. The coupling element furthermore includes a rotation body through which the winding body extends and that is provided for coupling to a drive to carry out a rotation movement by the drive, wherein the rotation body includes two sides of which one faces one end (of the winding body and the other faces the other end of the winding body.

An induction-controlled switch having a vacuum bulb comprising a vacuum chamber and a switch comprising first and second electrodes. The first switch comprising first and second electrodes and further having a first actuator slidably mounted in a first direction and rigidly attached to the first electrode. The first actuator comprising a first armature. A second actuator comprising a second armature. A first control member comprising a first coil configured to simultaneously generate a switching current in the first armature and a current in the second armature via the first coil, so as to separate or bring into contact the first and second electrodes and so as to move the first and second actuators in opposite ways along the first direction.