Abstract: The invention relates to a coupling for power cables, consisting of a plug part and a socket part, said plug part having a basic body comprising a coupling pin on which a locking pin is arranged. The locking pin is movably mounted on the coupling pin so as to be displaceable in the axial direction of the coupling pin. The locking pin is biased to a basic position towards a back end of the coupling pin by a spring force. When the coupling is being locked, the locking pin engages a helical groove of the socket part and, thus, moves towards the front end of the coupling pin. This movement causes the spring device to load.

Abstract: The invention relates to a hand welding torch (10) provided with a switching device (15), wherein the switching device is formed from a switching element and actuators, wherein the switching element is mounted in such a manner that it can move relatively to the actuators, wherein the actuators can be actuated by means of the switching element, and wherein the switching element can be moved in at least two degrees of freedom.