Shutter

The switch includes a first fixed contact (10a), a second fixed contact (10b), a movable contact (20), at least one pair of permanent magnets (30), and a yoke portion. The movable contact (20) extends in a first direction, has a first movable contact point (21a) at a first end portion, and is provided in a second direction so as to be capable of being separated from and brought into contact with the first fixed contact (10a). The pair of permanent magnets (30) is disposed so as to sandwich the movable contact (20), and the surfaces of the permanent magnets (30) facing the movable contact (20) in the third direction of the movable contact (20) are homopolar. The yoke portion surrounds the periphery of the movable contact (20) in the first direction and the third direction, and is connected to the surface of the permanent magnet (30) on the opposite side from the surface facing the movable contact (20). The yoke portion has a protrusion (42) protruding toward the movable contact (20) at a position facing a firs