The present disclosure relates to a vacuum interrupter that is installed within a vacuum circuit breaker to break a circuit. The vacuum interrupter includes an insulated container, a seal cup, a fixing electrode, a diaphragm, and a movable electrode. The insulated container is formed in a cylindrical form. The seal cup is installed on an upper end of the insulated container. The fixing electrode includes a fixing shaft and a fixing contact member installed on the other end of the fixing shaft. The diaphragm is installed on a lower end of the insulated container. The movable electrode includes a movable shaft having one end fixed to the diaphragm and the other end disposed within the insulated container and formed to be linearly movable, and a movable contact member installed on the other end of the movable shaft to be selectively contacted to the fixing contact member.

An electrical contact for a vacuum switching apparatus. The vacuum switching apparatus includes a second electrical contact. The electrical contact includes a hub portion and a plurality of petal portions each extending from the hub portion. Each of the plurality of petal portions has a first surface and a second surface. The first surface faces in a first direction and is structured to engage the second electrical contact. The second surface faces in a second direction generally opposite the first direction. At least one of the plurality of petal portions further has a grooved portion extending inwardly from the second surface toward the first surface.

An electrical contact for a vacuum switching apparatus. The vacuum switching apparatus includes a second electrical contact. The electrical contact includes a hub portion and a plurality of petal portions each extending from the hub portion. Each of the plurality of petal portions has a first surface and a second surface. The first surface faces in a first direction and is structured to engage the second electrical contact. The second surface faces in a second direction generally opposite the first direction. At least one of the plurality of petal portions further has a grooved portion extending inwardly from the second surface toward the first surface.

The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.

The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.

A pole part for high pressure environment application, with a pressure resistant insulating housing in which a vacuum interrupter is installed, wherein the vacuum interrupter is provided with at least one moving contact and one fixed contact inside the vacuum interrupter. In order to create a pole part able to withstand high environmental pressure, a pressure resistant insulating body can be tubelike and at its ends provided with flanges formed at the insulating housing out of the same material, and that at least one of the flanges is closed with a metal cap, which is adapted to the aforesaid flange of the insulating housing by the same dimensions, and that with clamp the metal cap is pressed tightly on the flange of the insulating housing by the introduced clamping fixation force.

A solid-dielectric switch includes a visible disconnect assembly having an open state and a closed state. A molded housing at least partially encases the visible disconnect assembly. At least a portion of the molded housing forms a molded one-piece wall having an inner surface and an outer surface. An aperture in the molded one-piece wall extends between the inner surface and the outer surface of the wall. A viewing window is disposed in the aperture and molded into the molded wall. The viewing window includes a lens, wherein the viewing window has an outer edge that is embedded within the molded one-piece wall with the outer edge extending into the molded one-piece wall between the inner surface and the outer surface of the molded one-piece wall.

A vacuum interrupter (1) includes a tubular insulating case (3, 4) extending along a longitudinal axis (AA), two conducting caps (51, 52) each securely fixed at an open end of the tubular insulating case (3, 4) at a sealing area (7) to form a tightly sealed chamber (2). The vacuum interrupter is characterised in that the tubular insulating case (3, 4) is shaped so as to enclose the conducting caps (51, 52) and extend beyond the caps (51, 52) along its longitudinal axis (AA).

Conventional example is arranged simply to turn a circuit on/off, and not to changeover connection. Sealed relay 1 comprises: insulating tube 2; first relay connect portion 4 attached to one end of insulating tube 2, and provided with first contact 3 on inside surface; second relay connect portion 5 disposed in confrontation with first relay connect portion 4 in insulating tube 2; movable member 7 disposed movably between first and second relay connect portions 4 and 5, and provided with second contact 6 contacting with first contact 3 when moved toward the first relay connect portion; and operating mechanism to move the movable member. Third relay connect portion 10 including third contact 9 is provided between the second and first relay connect portions. Movable member 7 includes a fourth contact contacting with the third contact when the first and second contacts are out of contact from each other.

A medium-or high-voltage vacuum interrupter, including: an insulator forming a receiving enclosure, the insulator being formed of two coaxial elements; two electrical contacts arranged inside the insulator and configured to be moved relative to one another between a closed position and an open position; and a screen radially surrounding the electrical contacts and configured to collect the metal particles emitted when an electric arc passes between the electrical contacts so as to protect the insulator from the metal particles emitted, wherein the screen includes a fixing flange clamped between the two elements of the insulator. The vacuum interrupter further includes a seal made of a semiconductor material surrounding the insulator, the seal being in electrical contact with the screen.