An electric machine comprising: - a casing and a cap to cover the casing, the casing and the cap being coupled to each other to define a sealed enclosure; - a stator and a rotor, associated with the stator, both disposed inside the sealed enclosure, the stator comprising a stator mount (5a, 40) integral with the casing, the electric machine comprising - an electronic module disposed in the sealed enclosure between the casing and the cap and comprising a printed circuit board, a plurality of electronic power components and a plurality of conductive tracks defining an electric power circuit between respective power pins (7a, 7b) of the electric machine; - an electrically conductive element disposed in such a way as to connect a first track and a second track of the plurality of conductive tracks in order to close the electric power circuit, the electrically conductive element being held in position by at least one mechanically breakable joint which, if subjected to a predetermined force, mechanically yields or breaks and thereby opens the electric power circuit, the electric machine comprising a system for releasing the conductive element from the first track and/or from the second track, the enclosure defining a housing space adapted to allow the electrically conductive element to move away from the first track and/or from the second track, the electric machine being characterized in that the system comprises a stopping element interposed between the stator and the electrically conductive element to apply the predetermined force if the casing moves closer to the cap, the stopping element being aligned at least partly with the electrically conductive element along a direction of action parallel to an axis of rotation of the electric machine. - a casing and a cap to cover the casing, the casing and the cap being coupled to each other to define a sealed enclosure; - a stator and a rotor, associated with the stator, both disposed inside the sealed enclosure, the stator comprising a stator mount (5a, 40) integral with the casing, - an electronic module disposed in the sealed enclosure between the casing and the cap and comprising a printed circuit board, a plurality of electronic power components and a plurality of conductive tracks defining an electric power circuit between respective power pins (7a, 7b) of the electric machine; - an electrically conductive element disposed in such a way as to connect a first track and a second track of the plurality of conductive tracks in order to close the electric power circuit, the electrically conductive element being held in position by at least one mechanically breakable joint which, if subjected to a predetermined force, mechanically yields or breaks and thereby opens the electric power circuit, the electric machine comprising a system for releasing the conductive element from the first track and/or from the second track, the enclosure defining a housing space adapted to allow the electrically conductive element to move away from the first track and/or from the second track, the electric machine being characterized in that the system comprises a stopping element interposed between the stator and the electrically conductive element to apply the predetermined force if the casing moves closer to the cap, the stopping element being aligned at least partly with the electrically conductive element along a direction of action parallel to an axis of rotation of the electric machine.