Push-button and electrical system comprising the same

A push-button adapted for being pressed by a user parallel to a pressing direction, and for remaining in a locked pressed position until an unlocking action is executed by the user, where at least part of a plunger sub-assembly is driven into rotation by the user pressing a push-head of the push-button and the rotated part of the plunger sub-assembly then abuts a relief portion existing in an internal surface of a casing of said push-button, thereby producing locking of the pressed position,

• wherein the plunger sub-assembly comprises:
• a translation-to-rotation converting part, adapted for being rotated by the user pressing the push-head;
• a latch part, having an edge arranged for abutting the relief portion in the internal surface of the casing so as to produce locking of the pressed position;
• and
• a latch spring element separated from the translation-to-rotation converting part, and connecting the latch part to said translation-to-rotation converting part so that rotation of the translation-to-rotation converting part drives the latch part, through the latch spring element, into a position that leads to abutment of said latch part against the relief portion in the internal surface of the casing.