An uncoupling device for a central buffer coupling on a railroad vehicle comprises an operating mechanism which has one end pivotally mounted adjacent the tracks on which the vehicle is positioned and on the other end is provided with an uncoupling hook which is engageable with the uncoupling lever pivotally mounted on the railway vehicle. The operating mechanism is moved between inoperative and engaging positions by a drive which is actuated by a switch responsive to the engaging of the uncoupling lever with the hook on the operating mechanism.