One axial end of a through-hole of a bearing portion of a first stationary core located on a movable core side has a peripheral edge placed at a corresponding axial position. The corresponding axial position of the peripheral edge may be the same as an axial position of an axial end surface of a radially outer part of the first stationary core or is on an axial side of the axial end surface, which is axially opposite from the movable core. A bottom portion of a yoke may have a hole, which receives at least a part of a second stationary core. A stopper made of a resin material may be placed on a side of the bottom portion of the yoke, which is opposite from the second stationary core in the axial direction. A shaft may be abuttable against the stopper.