The device and the method are used for the automatic assembly of an in particular twisted pair of wires, wherein the pair of wires has two wire elements each with a contact element arranged at one end of a wire end. The respective contact elements are brought into a predetermined rotary position by gripping the wire pair with a main gripper which has an axis of rotation about which it can rotate, and wherein the wire ends are each gripped by a gripping element. The respective contact element is brought into the predetermined rotary position by rotating the pair of wires by way of the main gripper.