Abstract: The device is automatically re-armed and comprises at least one pyrotechnic jack and a push-member actuated by the jack for unlocking the fixture. A loader carries a plurality of pyrotechnic charges for actuating the jack in succession. A device is provided for igniting the charges and a device is provided for positioning the charges of the loader with respect to the push-member and with respect to the device for igniting the charges.The present invention relates to an automatically re-armed electro-pyrotechnic unlocking device and more particularly, although not exclusively, to such a device applied to a safety fixture or binding for a ski.Safety fixtures are known which are opened by a pyrotechnic charge which is ignited by means responsive to critical exterior influences when said influences appear or act.An object of the invention is to provide an unlocking device of the aforementioned type which is relatively simple in construction and easy to use.