COMMUTATEUR ELECTRIQUE SECURISE

An electric switch comprising an actuator mounted to rock between an ON position and an OFF position, the positions being situated on either side of an equilibrium axis, and a moving contact element along which one end of the actuator travels to cause it to rock between a closed position and an open position that correspond to the ON and OFF positions of the actuator, the switch being characterised in that the actuator and the moving contact element include complementary abutment means comprising two rounded projections, one of the projections being on the moving contact element and the other projection being on the actuator, the curved abutment surfaces of the projections presenting parallel tangents spaced apart by a distance lying in the range 0.5 mm to 1 mm when the actuator is placed in the ON position, and in that in the ON position, the contact zone of the end of the actuator on the moving contact element is situated at a distance from the equilibrium axis that is determined in such a manner than when the moving contact element is held in the closed position and the actuator is rocked from its ON position towards its OFF position, the end of the actuator travels on the moving contact element until the abutment means come into abutment against each other before the contact zone reaches the equilibrium axis.