The invention refers to an actuator with a movable controlling element (7), a wire-shaped SMA element (2) for moving the controlling element in one direction, on whose at least one wire end (3) a connector (4) having a contact surface (13) and made of an electrically conductive material has been fixed, and a structural part (5) made at least partially from an electrically non-conductive plastic material, that has been provided with a conductive strip (6). The connector (4) is fixed to an area of the structural part made from non-conductive material, whereby as a result of that, the contact surface (13) is maintained in electrically conductive contact with the conductive strip (6).