Patent ID: 8446241

Claim:
A device for breaking/making an electric circuit, the device comprising: a pyrotechnic charge configured to be ignited, the combustion of the pyrotechnic charge brings about the breaking, respectively the making, of the electric circuit; and an ignition element for igniting the pyrotechnic charge, wherein: the ignition element is connected to the electric circuit, the ignition element includes a microswitch with magnetic action that controls the ignition of the pyrotechnic charge, the microswitch is placed on a circuit branch linked to the electric circuit and to ground, the ignition element includes a heating resistive element mounted in series with the microswitch and is configured to ignite the pyrotechnic charge, and the microswitch is controlled by an excitation coil that is mounted in parallel relative to the microswitch, and the device includes two conductors and a connecting piece that joins the two conductors, the connecting piece is displaced under the effect of the gases generated by the combustion of the pyrotechnic charge, and the connecting piece is joined to a piston separating a first chamber including the pyrotechnic charge from a second chamber that is passed through by the two conductors.