A system for point electromechanically separating at least two separable mechanical elements, said system comprising a holding device including a connecting screw integral with a first of said separable mechanical elements (E1, E2), the connecting screw being held by a segmented nut comprising a plurality of segments arranged between the connecting screw and an outer shell, said outer shell being integral with the second of said separable mechanical elements (E1, E2), said system also comprising an activatable force generator able to generate a thrust force in a so-called longitudinal direction (X-X) for, in connection with cooperating shapes between each of said segments and the outer shell, yielding a movement of each of said segments of the segmented nut in a so-called radial direction, perpendicular to the longitudinal direction, from the connecting screw to the outer shell to release the connecting screw from the segmented nut in order to separate both separable mechanical elements (E1, E2), characterised in that the force generator comprises: - a mechanical energy accumulator able to generate the thrust force, said accumulator comprising at least one sealed chamber provided with a colloid, said colloid being formed by a porous matrix and by a liquid, the chamber being able to deform in the longitudinal direction (X-X) to accommodate change from a compressed state to a decompressed state of the colloid, a state of the colloid depending on a mechanical pressure applied to the chamber, deformation in the longitudinal direction (X-X) of the chamber generating the thrust force; and - an activatable actuating element, arranged on the chamber and configured: • either to apply a predetermined mechanical pressure to the chamber in order to hold the colloid in the compressed state, • or, upon being activated, not to apply the predetermined mechanical pressure to the chamber in order to enable change from the compressed state to the decompressed state of the colloid. - a mechanical energy accumulator able to generate the thrust force, said accumulator comprising at least one sealed chamber provided with a colloid, said colloid being formed by a porous matrix and by a liquid, the chamber being able to deform in the longitudinal direction (X-X) to accommodate change from a compressed state to a decompressed state of the colloid, a state of the colloid depending on a mechanical pressure applied to the chamber, deformation in the longitudinal direction (X-X) of the chamber generating the thrust force; and - an activatable actuating element, arranged on the chamber and configured: • either to apply a predetermined mechanical pressure to the chamber in order to hold the colloid in the compressed state, • or, upon being activated, not to apply the predetermined mechanical pressure to the chamber in order to enable change from the compressed state to the decompressed state of the colloid. • either to apply a predetermined mechanical pressure to the chamber in order to hold the colloid in the compressed state, • or, upon being activated, not to apply the predetermined mechanical pressure to the chamber in order to enable change from the compressed state to the decompressed state of the colloid.