Patent ID: 7880104

Claim:
A control device for controlling electrical switchgear including a moving contact that is suitable for occupying a closed position and an open position, said control device being designed to move said moving contact and comprising a motor, a mechanical spring and an actuating arm having a first connection point and a second connection point, said control device being characterized in that said actuating arm is suitable for occupying a closure position making it possible to place the moving contact in its closed position and in which the second connection point is situated at a point P 1 , an opening position making it possible to place the moving contact in its open position and in which the second connection point is situated at a point P 2 that is distinct from P 1 , and a re-cocked position in which the second connection point is situated at a point P 3 that is distinct from P 2 and P 1 , said control device being designed so that said second connection point can be moved successively along a closed line (L) including said points P 1 , P 2 , and P 3 : during an opening stage for opening the moving contact, under the effect of said mechanical spring, from point P 1 to point P 2 ; during a re-cocking stage for re-cocking the mechanical spring, under the effect of the motor being switched on, and while keeping the moving contact in the open position, from point P 2 to point P 3 ; and during a closure stage for closing the moving contact, also under the effect of the motor being switched on, from point P 3 to P 1 .