Model plug or automatic electric switch. (Machine-translation by Google Translate, not legally binding)

摘要

New model of plug or automatic electric switch characterized in presenting external shape similar to fuses or screw caps, having installed inside a moving or movable contact that closes the electrical circuit between the lateral metal armature and the central contact of the cap itself, This contact or permanent mobile element requested by a metal spring remains, precisely in the direction corresponding to the opening of the electric circuit, this mobile contact also having a retaining device, which keeps it in the closing position of the circuit, as long as it does not act on said device, in adequate intensity, the magnetic field of an electromagnet that is connected in series with the electrical circuit of the plug itself. (Machine-translation by Google Translate, not legally binding)