The invention relates to a switchable stabilizer device for the axle of a motor vehicle. Herein, the actuating device comprises a roll stabilizer and an actuatorically switchable coupling device (6) with two clutch devices (7, 8) and a locking sleeve (9).According to the present invention, the stabilizer device is characterized by a shifting device for shifting the locking sleeve (9) by means of mechanical power transmission. Herein, the shifting device has a servo-electric transmission drive element (4).The present invention provides a robust and compact switchable roll stabilizer, which can be produced cost-efficiently. At the same time, the present invention allows for the actuatoric support of the opening movement as well as the locking movement of the stabilizer coupling with very short shifting times.The switchable stabilizer according to the present invention is suitable for motor vehicles, for example, which are employed off-road as well as on the road. Due to the extremely short shifting times of the stabilizer coupling, the stabilizer device according to the present invention may be used furthermore for an active running gear to support the vehicle dynamics in real time.