A power window device for moving a window member in a first direction and a second direction opposite the first direction, the power window device including: a switch (5,6) operated when moving the window member in the first direction or the second direction; an actuator for moving the window member in accordance with the operation of the switch; a sensor for generating a detection signal (Sx) that is based on activation state of the actuator and indicates whether or not the window member is moving; and a controller, connected to the switch, the actuator, and the sensor, for activating the actuator in response to the operation of the switch to move the window member, the power window device being characterized in that: the controller is adapted to determine from the sensor detection signal (Sx)when the window member is not moving even though the actuator is activated, deactivate the actuator if the determination is that the window is not moving and the actuator is activated, and enable activation of the deactivated actuator if a period for sufficient cooling the actuators elapses from when the actuator was deactivated, if the switch is continuously operated for a predetermined time to move the window member in the same direction as when the actuator was deactivated, or if the switch is operated to move the window member in a direction opposite to the direction the actuator was moving when deactivated. a switch (5,6) operated when moving the window member in the first direction or the second direction; an actuator for moving the window member in accordance with the operation of the switch; a sensor for generating a detection signal (Sx) that is based on activation state of the actuator and indicates whether or not the window member is moving; and a controller, connected to the switch, the actuator, and the sensor, for activating the actuator in response to the operation of the switch to move the window member, the power window device being characterized in that: the controller is adapted to determine from the sensor detection signal (Sx)when the window member is not moving even though the actuator is activated, deactivate the actuator if the determination is that the window is not moving and the actuator is activated, and enable activation of the deactivated actuator if a period for sufficient cooling the actuators elapses from when the actuator was deactivated, if the switch is continuously operated for a predetermined time to move the window member in the same direction as when the actuator was deactivated, or if the switch is operated to move the window member in a direction opposite to the direction the actuator was moving when deactivated. the controller is adapted to determine from the sensor detection signal (Sx)when the window member is not moving even though the actuator is activated, deactivate the actuator if the determination is that the window is not moving and the actuator is activated, and enable activation of the deactivated actuator if a period for sufficient cooling the actuators elapses from when the actuator was deactivated, if the switch is continuously operated for a predetermined time to move the window member in the same direction as when the actuator was deactivated, or if the switch is operated to move the window member in a direction opposite to the direction the actuator was moving when deactivated.