A temperature switch (10) includes: a movable plate (11) that is elastically deformable; a movable contact (12) provided on the movable plate (11); a fixed contact (13) provided so as to face the movable contact (12); a bimetal element (14) (an example of a thermally deformable member) that is elastically deformed in accordance with a temperature change so as to elastically deform the movable plate (11) such that the movable plate (11) is positioned at a contact position such that the movable contact (12) is in contact with the fixed contact (13) or a spaced position (movable plate 11-1) such that the movable contact (12) is spaced apart from the fixed contact (13); and a projecting section (15a) (an example of a vibration suppression section) that suppresses vibrations of the movable plate (11) by contacting a portion of the movable plate (11) on a fixed-edge side of the movable plate (11) with reference to a center (C) of the movable contact (12) when the movable plate (11) is elastically deformed to shift from the contact position to the spaced position.

A switch device includes: a case provided with a through-hole; an operation member having an operation shaft to be inserted into the through-hole of the case, and an operation head provided at an outer end of the operation shaft; and a protective buffer member which has elasticity and is attached to an outer surface of the case. The protective buffer member includes a storage which has a bottom facing an inner end surface of the operation head and stores a periphery of the operation head.

A damping and latching mechanism for a Thomson coil-based actuator used to open and close the separable contacts of circuit interrupters in circuit breakers uses magnetorheological fluid to actively control the damping of opening and closing strokes in a circuit breaker in order to decrease wear and tear on components that can result from contact-based damping mechanisms and to maintain the open and closed states of separable contacts in the circuit breaker.

A damping and latching mechanism for a Thomson coil-based actuator used to open and close the separable contacts of circuit interrupters in circuit breakers uses magnetorheological fluid to actively control the damping of opening and closing strokes in a circuit breaker in order to decrease wear and tear on components that can result from contact-based damping mechanisms and to maintain the open and closed states of separable contacts in the circuit breaker.

Embodiment herein provide a vacuum Load break switch comprising a tank (Metallic or non-metallic) (1), an interruption system (2) enclosed in the tank (1), a drive lever (3) connected to the interruption system (2), a leak proof system (4) with multiple O-Rings connected to the interruption system (2), and a source side connector (5) and a load side connector (6) connected to the interruption system (2). During an open operation, a current inside the vacuum interruption system (2) is interrupted to move the interruption system (2) and create an isolation distance. Further, during a close operation, the vacuum interruption system (2) moves to make the isolation distance zero and then the current flow is started inside vacuum interruption system (2).

A switch device includes: a case provided with a through-hole; an operation member having an operation shaft to be inserted into the through-hole of the case, and an operation head provided at an outer end of the operation shaft; and a protective buffer member which has elasticity and is attached to an outer surface of the case. The protective buffer member includes a storage which has a bottom facing an inner end surface of the operation head and stores a periphery of the operation head.

A key structure is provided. The key structure includes a base plate, a membrane switch circuit, a key cap and a balance bar. The base plate includes a mounting portion. The membrane switch circuit is arranged on the base plate. The key cap is disposed above the membrane switch circuit. The balance bar is arranged between the base plate and the key cap. The balance bar includes a rod body and a first link part, the rod body is connected to the key cap, and the first link part is pivotally arranged corresponding to the mounting portion and connected to the base plate. An opaque area is formed in the overlap range of the orthographic projection of the membrane switch circuit and the key cap.

A circuit breaker comprises a switch and an actuator comprising a displaceable shaft mechanically connected to a movable contact in the switch. A Thomson coil is adapted to displace the shaft in a first direction, and a disconnecting device is connected in series with the switch and that is adapted to open during an interval when current is extinguished. An energy storage is provided being a separate part from the shaft and being adapted to store energy when the shaft moves in the first direction and to release energy to displace the shaft in a second direction, comprising a mass-spring arrangement with a body, a first spring between the shaft and one end portion of the body at a side facing the shaft and a second spring at a first end portion connected to a side of the body facing from the shaft and at second end portion being fixed. The movement of the body continues undisturbed to achieve a time interval wherein a current is extinguished. A current-interrupting arrangement for a circuit breaker is provided that has a simple mechanical construction and which can handle the problem at closing-in into a permanent fault in an adequate way.

A paddle switch system comprises a housing, a paddle having a pivot member pivotally disposed in the housing for operating an electrical switch within the housing in response to a force on the paddle, a cover coupled to the housing wherein the housing and the cover partially enclose the paddle, and a vibration reduction mechanism disposed in the housing proximate the pivot member of the paddle. The electrical switch comprises a dome switch and the paddle is disposed in the housing to partially preload the dome switch.

A key structure is provided. The key structure includes a base plate, a membrane switch circuit, a key cap and a balance bar. The base plate includes a mounting portion. The membrane switch circuit is arranged on the base plate. The key cap is disposed above the membrane switch circuit. The balance bar is arranged between the base plate and the key cap. The balance bar includes a rod body and a first link part, the rod body is connected to the key cap, and the first link part is pivotally arranged corresponding to the mounting portion and connected to the base plate. An opaque area is formed in the overlap range of the orthographic projection of the membrane switch circuit and the key cap.