A method and a device for secure operation of a switching device including at least two main contacts which can be switched on and off and include contact pieces and a displaceable contact bridge, and a control magnet having a displaceable anchor. The drawing unit can move along a movement path between a retracted position in an apparatus and an exposed position outside the apparatus. Due to this pressure the spheres and slurry are semi dried into a green state. Similarly, the memory, CPU, audible indicator, light source, switch, camera, transceiver, microphone, impact tool, and aromatic element may be any types well known in the art.