Abstract: The present invention relates to an electrical contact device which comprises an electrically conductive base part, and an electrically conductive protruding part protruding from the electrically conductive base part. The electrical contact device also comprises an electrically conductive coil spring having a diameter that increases from a first end to a second end of the electrically conductive coil spring. The electrically conductive coil spring is arranged around the electrically conductive protruding part in such a manner that the first end of the electrically conductive coil spring faces the electrically conductive base part, and the electrically conductive coil spring extends further from the electrically conductive base part than the electrically conductive protruding part does.