Actuation microsystem and method of producing same

An actuation microsystem made on a flat substrate and comprising at least:

• a pivoting arm mounted in rotation around a hinge formed on the substrate,
• a first stationary contact pad arranged on a top surface of the substrate and operating in conjunction with at least one movable contact pad securedly affixed to the pivoting arm,
• and an end of opening travel stop of the pivoting arm.
• a microsystem wherein the end of travel stop formed on the substrate comprises:
• a top part arranged above and at a distance from the pivoting arm, between an articulation end of the pivoting arm on the hinge and a free end of the pivoting arm comprising the movable contact pad,
• a bottom part connected to the substrate and arranged laterally with respect to the pivoting arm between the hinge and the stationary contact pad.