A stator includes stator iron cores stacked in a rotor axial direction, and an interphase insulating member arranged between the stator iron cores. Each of the stator iron cores includes a circular back yoke and a stator claw magnetic pole that protrudes from the back yoke in a rotor radial direction. The interphase insulating member includes an insulating portion, arranged between adjacent ones of the stator iron cores, and a support. The stator claw magnetic pole is in contact with the support in at least one of a rotor circumferential direction and the rotor radial direction.