A disconnector includes: a switch having: a first, fixed contact terminal of a first conductor, a second, fixed contact terminal of a second conductor, and a moveable bridge contact moveable between a first position and a second position; and an actuating mechanism having: a cam follower coupled to the moveable bridge contact and including a following surface, a cam having a cam surface, the cam surface engaging with the following surface, the cam being rotatable around an axial direction relative to the cam follower. At least one of the following surface and the cam surface includes an angled portion, the angled portion angled with respect to the axial direction such that rotation of the cam urges the cam follower in the axial direction, the cam follower moving the moveable bridge contact in the axial direction from the first position to the second position in response to the urging.

A switch device includes a housing, an operating member, a fixed contact, and a moving contact. The moving contact is, while being in contact with the fixed contact, urged toward the fixed contact so as to be in elastic contact with the fixed contact. The fixed contact includes a plate portion and is held by the housing with a space on one surface side of the plate portion. The moving contact includes a first extended portion that extends so as to intersect the plate portion. When the moving contact and the fixed contact are in contact with each other, the first extended portion intersects the plate portion while being inclined relative to the plate portion, and the first extended portion is in elastic contact with a corner portion on a one surface side of an edge of the plate portion.

A key stabilizer is provided, in which the key stabilizer includes a keycap and a balance bar. The keycap has a bottom surface and two protruding portions disposed thereon. The keycap moves back and forth along a vertical direction between a top position and a bottom position. Each of the two protruding portions has an engaging portion at the end thereof. The bottom surface faces the bottom position, and the two protruding portions are arranged along a horizontal direction that is perpendicular to the vertical direction. The balance bar has a hinge portion and two side portions respectively connected to both ends of the hinge portion. The hinge portion is positioned on a rotation axis parallel to the horizontal direction. The end of each of the two side portions that is away from the hinge portion is inserted into the engaging portion.

A key stabilizer is provided, in which the key stabilizer includes a keycap and a balance bar. The keycap has a bottom surface and two protruding portions disposed thereon. The keycap moves back and forth along a vertical direction between a top position and a bottom position. Each of the two protruding portions has an engaging portion at the end thereof. The bottom surface faces the bottom position, and the two protruding portions are arranged along a horizontal direction that is perpendicular to the vertical direction. The balance bar has a hinge portion and two side portions respectively connected to both ends of the hinge portion. The hinge portion is positioned on a rotation axis parallel to the horizontal direction. The end of each of the two side portions that is away from the hinge portion is inserted into the engaging portion.

A switch device includes a housing, an operating member, a fixed contact, and a moving contact. The moving contact is, while being in contact with the fixed contact, urged toward the fixed contact so as to be in elastic contact with the fixed contact. The fixed contact includes a plate portion and is held by the housing with a space on one surface side of the plate portion. The moving contact includes a first extended portion that extends so as to intersect the plate portion. When the moving contact and the fixed contact are in contact with each other, the first extended portion intersects the plate portion while being inclined relative to the plate portion, and the first extended portion is in elastic contact with a corner portion on a one surface side of an edge of the plate portion.

A contact holder applied to an auxiliary contact module of a contactor includes a holder body and a linkage member on the holder body. The holder body is provided with a groove corresponding to the linkage member, and the linkage member is of an elastically deformable structure, to allow the linkage member to retract and deform in a direction towards an interior of the groove when subjected to mounting pressure.