Switchgear

A switchgear comprising:

• a movable part capable of reciprocating movement including movement in a first direction and movement in a second direction opposite to the first direction;
• a movable contact coupled to the movable part on a side of the first direction, the movable contact being capable of reciprocating movement including movement in the first direction and movement in the second direction relative to the movable part;
• a biasing member to bias the movable contact in the first direction relative to the movable part;
• a latch part 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;
• an accommodating part to accommodate the movable part and the movable contact therein, the accommodating part having an opening through which one end side of the movable contact passes, the one end side being a side of the first direction;
• a fixed contact provided outside of the accommodating part and on a side of the first direction with respect to the movable contact;
• and
• a moving part to move with the movable contact when the movable contact moves in the first direction, wherein
• the movable part and the movable contact move in the first direction from initial positions at which the movable contact is away from the fixed contact to closed positions at which the movable contact is in contact with the fixed contact,
• in a process in which the movable part and the movable contact move from the initial positions to the closed positions, after the movable part and the movable contact have moved a predetermined distance, the movement of the movable contact is restricted by the latch part in the first state, and when the movable part has moved further in the first direction against biasing force of the biasing member after the movement of the movable contact was restricted, the latch part is switched to the second state in which the movement of the movable contact in the first direction is permitted,
• the accommodating part contains a first region and a second region within a range of the movement of the moving part, the second region being on a side of the first direction with respect to the first region, and
• the second region has an inner diameter smaller than that of the first region.