Actuation system for an electrical switching device

A locking module of an arming system provided with an accumulation means configured to release a mechanical energy during the switch from an armed state to a disarmed state, the module comprising:

• a lever pivot-linked around a first pivot shaft, and which comprises a first end and a second end, the second end comprising a surface, called bearing surface, which has a width, called bearing width, the accumulation means exerting a thrust force on the first end when the accumulation means is in the armed state;
• a lock element configured to adopt one or other of two positions called, respectively, first position and second position, the first position corresponding to a position for which the bearing surface is bearing against a contact surface of the lock element so as to oppose any rotation of the lever due to the thrust force and keep the accumulation means in the armed state, the second position corresponding to a retraction of the contact surface so as to allow the accumulation means to switch from the armed state to the disarmed state;
• wherein a shoe, made of a metal leaf and fixed to the lever, is interposed between the bearing surface and the contact surface when the bearing surface is bearing against the contact surface, a shoe surface portion, called secondary surface, being in contact with the contact surface, said secondary surface having a width, called shoe width, greater than the bearing width.