Electric switch, more particularly a current-limiter

An electric switch, more particularly a current limiter, having fixed and movable contacts and a control mechanism actuated by a control pin mounted for rotation in the switch casing, characterized in that said control pin carries for free rotation about its axis a rocking assembly, which is coupled with the control pin under the bias of first resilient means in a direction of rotation of said pin, and can be cleared of the pin against the bias of said first resilient means, in the opposite direction of rotation of the pin, in that there are provided two extension springs, with means to limit their maximum compression and attached at either end to the rocking assembly so as to tend to have it rotated in opposite directions, the free end of one of said spring being attached to the switch casing and that of the second spring to the linking pin of two toggle connecting rods, one of which is pivoted to an arm of a rocker and the other to an arm of a bell crank lever, said rocker and said bell crank lever being rotatable about axes, parallel to the axis of the control pin, in that said rocker carries a stop for the connecting rod pivoted thereto and carries pivoted to its other arm a control member for the moving contacts, said other arm of the rocker having a cammed profile with which a follower is intended to coact, as carried by said rocking assembly, in that a lever is provided which is rotatable about an axis parallel to the axis of the control pin under the bias of second resilient means to provide a resting surface to the second arm of said bell crank lever, and in that means are provided to rotate said lever against the bias of the second resilient means for withdrawing the rest surface to said second arm of the bell crank lever.