Contact actuator for a vehicle

The actuator has a cylindrical barrel that is intended to swivel around an axis (A1). A handle includes a rod (108) extending according to the axis. The rod is arranged interdependent of the barrel in rotation around the axis. The rod presents a pin (208) that is intended to move in a longitudinal groove (304) when the rod moves between its advanced position and its moved back position. The longitudinal groove circumferentially blocks the pin of the rod so as to prevent rotation of the handle around the axis.