A switch including a housing, a first contact arrangement having a first commutation contact element and a first contact, a second contact arrangement having a second commutation contact element and a second contact, and also a nominal contact arrangement. The first commutation contact element and the second commutation contact element form a snap-action connection with one another in the closed position of the commutation contact element. When the switch is closed, a distance between the first contact and the second contact is smaller than a distance between the first commutation contact element and the second commutation contact element in the direction of the axis.

A tensioning mechanism for tensioning a pre-loaded spring of a spring-loaded accumulator drive. The tensioning mechanism includes a tensioning wheel coupled to the pre-loaded spring, an intermediate shaft coupled to the tensioning wheel, an idler gear that can be driven by a clamping motor, a freewheel coupled to the idler gear, a locking mechanism for detachably locking the tensioning wheel in a tensioned state of the pre-loaded spring, and a dog clutch configured to couple the freewheel to the intermediate shaft in order to tension the pre-loaded spring and to uncouple same from the intermediate shaft in the tensioned state of the pre-loaded spring.

A tensioning mechanism for tensioning a pre-loaded spring of a spring-loaded accumulator drive. The tensioning mechanism includes a tensioning wheel coupled to the pre-loaded spring, an intermediate shaft coupled to the tensioning wheel, an idler gear that can be driven by a clamping motor, a freewheel coupled to the idler gear, a locking mechanism for detachably locking the tensioning wheel in a tensioned state of the pre-loaded spring, and a dog clutch configured to couple the freewheel to the intermediate shaft in order to tension the pre-loaded spring and to uncouple same from the intermediate shaft in the tensioned state of the pre-loaded spring.

A switchgear includes a movable part capable of reciprocating movement, a movable contact coupled to the movable part and capable of reciprocating movement relative to the movable part, a biasing member that biases the movable contact, a latch capable of switching between a first state in which movement of the movable contact in the first direction is restricted and a second state in which movement of the movable contact in the first direction is permitted, and a fixed contact provided on a side of the first direction with respect to the movable contact. When the movable part and the movable contact move in a first direction, after movement for a predetermined distance, the movement of the movable contact is restricted by the latch in the first state, and then, when the movable part has moved further in the first direction, the latch is switched to the second state.

A switchgear includes a movable part capable of reciprocating movement, a movable contact coupled to the movable part and capable of reciprocating movement relative to the movable part, a biasing member that biases the movable contact, a latch capable of switching between a first state in which movement of the movable contact in the first direction is restricted and a second state in which movement of the movable contact in the first direction is permitted, and a fixed contact provided on a side of the first direction with respect to the movable contact. When the movable part and the movable contact move in a first direction, after movement for a predetermined distance, the movement of the movable contact is restricted by the latch in the first state, and then, when the movable part has moved further in the first direction, the latch is switched to the second state.

The disclosure relates to an assembly for preloading a cable rotary-pendulum kinematic system, in which a rotational motion of a rotary body is converted into a translational motion of a winding body by winding cables, to which rotary body a torque may be applied. The assembly includes: a rotary body of a cable rotary-pendulum kinematic system, which rotary body is to be preloaded, may be rotated about the longitudinal axis thereof and is immovable in the direction of the longitudinal axis; at least one gas spring, which surrounds the rotary body and which may be compressed in the direction of the longitudinal axis; and primary cables, which force-lockingly connect the rotary body to the gas spring in such a way that a rotational motion of the rotary body causes compression of the gas spring, whereby the assembly is preloaded. The assembly has the advantage that no undesired oscillations occur in a cable rotary-pendulum kinematic system. The disclosure further relates to the use for electrical circuit breakers.

The disclosure relates to an assembly for preloading a cable rotary-pendulum kinematic system, in which a rotational motion of a rotary body is converted into a translational motion of a winding body by winding cables, to which rotary body a torque may be applied. The assembly includes: a rotary body of a cable rotary-pendulum kinematic system, which rotary body is to be preloaded, may be rotated about the longitudinal axis thereof and is immovable in the direction of the longitudinal axis; at least one gas spring, which surrounds the rotary body and which may be compressed in the direction of the longitudinal axis; and primary cables, which force-lockingly connect the rotary body to the gas spring in such a way that a rotational motion of the rotary body causes compression of the gas spring, whereby the assembly is preloaded. The assembly has the advantage that no undesired oscillations occur in a cable rotary-pendulum kinematic system. The disclosure further relates to the use for electrical circuit breakers.

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.

An operating device includes a lever rotatable about a rotating axis, a first torsion bar connected to the lever, and a second torsion bar connected to one end of the first torsion bar. The operating device further includes: a support fixedly supporting the second torsion bar at an end opposite to an end connected to the first torsion bar; a first pedestal portion structured to sandwich the support with a central axis of the second torsion bar interposed, the first pedestal portion supporting the support such that the support is rotatable about the central axis; a second pedestal portion including a penetrating portion extending through the second pedestal portion toward the support; a bolt including a shank passing through the penetrating portion, the bolt being screwed into the first pedestal portion; and a nut attached to the shank between the second pedestal portion and a head of the bolt.

An operating device includes: a first lever rotatable around a rotation axis; a torsion bar having a columnar shape or a tubular shape with the rotation axis as a central axis and connected to the first lever; and a support that fixes and supports one end of the torsion bar. Further, the operating device includes: a drive shaft having a tubular shape with the rotation axis as a central axis and surrounding a periphery of the torsion bar, one end serving as the first lever side being connected to the first lever, and another end opposite to the one end serving as the first lever side being rotatably supported around the rotation axis; and a plurality of second levers connected to the drive shaft and rotatable around the rotation axis on the support side rather than the first lever.