Steering wheel for a motor vehicle, having - a steering wheel rim for rotating actuation of the steering wheel, - a steering wheel hub for connection of the steering wheel with a steering shaft of a motor vehicle, said steering shaft being separate from the steering wheel, and - a superposition drive (1, 100) which comprises an actuator and a superposition gearing subordinate to the actuator for actuating a superposition steering by means of which a steering angle created by actuating the steering wheel rim can be superposed by a superposition angle that can be created by the superposition steering so that a respective rotation movement of a steering shaft connected with the steering wheel is composed of a steering angle that can be created by actuating the steering wheel rim and a superposition angle that can be created by actuating the superposition steering, wherein the superposition steering comprises components (1, 12, 100, 102, 104) which serve for creating the superposition angle, characterized in that an arresting appliance (2, 3, 4; 8) is provided on the steering wheel by means of which the superposition drive (1, 100) can be arrested by positive and/or force-fit action, wherein the arresting appliance (2, 3, 4; 8) is arranged at the superposition drive (1, 100), wherein an interrupt mechanism (2, 51, 53; 9) is provided by means of which prior to or upon activation of the arresting appliance (2, 3, 4; 8) the power supply, particularly the current supply, for the superposition drive (1, 100) is interrupted, such that the arresting appliance (2, 3, 4; 8) arrests the superposition drive (1, 100), and wherein the interrupt mechanism comprises electric or electronic switching means for the interruption of the power supply for the superposition drive (1, 100). - a steering wheel rim for rotating actuation of the steering wheel, - a steering wheel hub for connection of the steering wheel with a steering shaft of a motor vehicle, said steering shaft being separate from the steering wheel, and - a superposition drive (1, 100) which comprises an actuator and a superposition gearing subordinate to the actuator for actuating a superposition steering by means of which a steering angle created by actuating the steering wheel rim can be superposed by a superposition angle that can be created by the superposition steering so that a respective rotation movement of a steering shaft connected with the steering wheel is composed of a steering angle that can be created by actuating the steering wheel rim and a superposition angle that can be created by actuating the superposition steering, wherein the superposition steering comprises components (1, 12, 100, 102, 104) which serve for creating the superposition angle, characterized in that an arresting appliance (2, 3, 4; 8) is provided on the steering wheel by means of which the superposition drive (1, 100) can be arrested by positive and/or force-fit action, wherein the arresting appliance (2, 3, 4; 8) is arranged at the superposition drive (1, 100), wherein an interrupt mechanism (2, 51, 53; 9) is provided by means of which prior to or upon activation of the arresting appliance (2, 3, 4; 8) the power supply, particularly the current supply, for the superposition drive (1, 100) is interrupted, such that the arresting appliance (2, 3, 4; 8) arrests the superposition drive (1, 100), and wherein the interrupt mechanism comprises electric or electronic switching means for the interruption of the power supply for the superposition drive (1, 100).