A contact press-on assembly for a switching contact piece of an electrical switching unit has a first stop and a second stop. A spring element extends between the two stops, wherein the first stop can move relative to the second stop. The second stop provides a counterbearing for the first stop, wherein a rotary bearing for the spring element can move together with the first stop.

Provided is a valve 130 which requires only a small space for the open/close operation of an opening 113 in a partition wall. A sealing part 140 includes a sealing member 141 for sealing the opening by being pressed onto the partition wall around the opening. An urging means 144 urges the sealing member 141 against the opening when the sealing member 141 is in contact with the opening. A driving means 160 generates a driving force orthogonal to an opening central axis A which is an axis perpendicular to a partition plate 111 and passing through the center of the opening. A linkage 150, which is a Scott Russell linkage connecting the sealing part 140 and the driving means 160, converts the driving force of the driving means 160 into a driving force which is parallel to the opening central axis A and makes the sealing part 140 move along the same axis.

A vacuum interrupter for interrupting a voltage. The vacuum interrupter including a vacuum bottle housing and at least one vacuum bottle positioned within the vacuum bottle housing. The vacuum interrupter further including a seal between the vacuum bottle housing and an operating mechanism. The seal sealing the operating mechanism from an interior of the vacuum bottle. Wherein the seal includes an end coupled to the vacuum bottle housing. The vacuum interrupter further including a gasket positioned between the seal and the vacuum bottle housing. The gasket having an inner diameter configured to receive the end of the seal and extend radially outward from end of the seal.

A distribution grounding switch for an electricity distribution network has a first electrical terminal adapted connectable to a mains line, a second electrical terminal connectable to a lateral line, a first vacuum bottle having a pair of contactors therein, a second vacuum bottle having a pair of contactors therein, and a magnetic linkage cooperative with one of the pair of contactors of the first vacuum bottle and one of the pair of contactors of the second vacuum bottle so as to cause the pair of contactors of the first vacuum bottle the close while generally simultaneously causing the pair of contactors of the second vacuum bottle to open. The mechanical linkage also causes the pair of contactors of the first vacuum bottle to open generally simultaneously with the closing of the pair of contactors of the second vacuum bottle.

Recloser apparatuses, methods and systems are disclosed. In one embodiment a recloser includes a vacuum interrupter coupled with first and second electrical terminals. A driving structure is coupled with the vacuum interrupter. An electromagnetic actuator is coupled with the driving structure and is moveable to a first position to open the vacuum interrupter and to a second position to close the vacuum interrupter. A mechanical opening/closing mechanism includes a handle and a mechanical connection driving structure. The handle is moveable to move the vacuum interrupter to the first position and the second position. A control circuit is provided in communication with the electromagnetic actuator and is operable to actuate the electromagnetic actuator to move the vacuum interrupter between the first position and the second position.

In accordance with certain embodiments, an improved switching mechanism and related components are provided. In accordance with one embodiment, an apparatus can include a switching mechanism rated to switch at least 27 kilovolts; a housing to house the switching mechanism; an isolation point of the switching mechanism visible from outside the housing to visibly exhibit a physical open-circuit by the switching mechanism; wherein the isolation point is electrically insulated without using SF.sub.6 gas during operation. This abstract is not intended to be used to determine the scope of this patent.

An electrical switching device includes a kinematic chain, a first encapsulation housing, a movable switching contact piece and a fixed switching contact piece. The movable switching contact piece is movable by the kinematic chain which penetrates the first encapsulation housing in a fluid-tight manner. The kinematic chain penetrates the first encapsulation housing in a linearly movable manner.

A gas-insulated switching device includes: a vacuum valve having a movable contact provided on one side of a movable conductor and a fixed contact provided to a fixed conductor; an insulation rod connected to another side of the movable conductor led out from the vacuum valve through a bellows; an operation rod connecting the insulation rod and an operation device; an airtight container in which the insulation rod, the other side of the movable conductor, and the operation rod are accommodated; and an intermediate pressure chamber formed by communication between internal spaces of the bellows and the airtight container. A sliding contact member is provided to the other side of the movable conductor. The sliding contact member is connected, via the airtight container, to a main circuit conductor. A communication portion provided between the airtight container and the sliding contact member allows communication inside the airtight container.

A circuit breaker includes first and second terminals, first and second vacuum interrupters, an interconnection part, an actuator, an operating rod, and a lever system. The first terminal is connected to a fixed contact of the first vacuum interrupter. The second terminal is electrically connected to a fixed contact of the second vacuum interrupter. The interconnection part is associated with a movable contact of the first and second vacuum interrupters when the circuit breaker is in a closed state. A first end of a first lever arm is coupled to the movable contact, and a second end is coupled to the operating rod. When transitioning from an open to a closed state, the actuator moves the operating rod to move the second end of the first lever arm and the second end of the second lever arm.

A distribution grounding switch for an electricity distribution network has a first electrical terminal adapted connectable to a mains line, a second electrical terminal connectable to a lateral line, a first vacuum bottle having a pair of contactors therein, a second vacuum bottle having a pair of contactors therein, and a magnetic linkage cooperative with one of the pair of contactors of the first vacuum bottle and one of the pair of contactors of the second vacuum bottle so as to cause the pair of contactors of the first vacuum bottle the close while generally simultaneously causing the pair of contactors of the second vacuum bottle to open. The mechanical linkage also causes the pair of contactors of the first vacuum bottle to open generally simultaneously with the closing of the pair of contactors of the second vacuum bottle.