On theatre stages people, the actors, often meet machines, the stage technology. This inevitably leads to injury potential.
In order to minimize the risk, it is suitable to use an enabling switch in some places. The functionality of our enabling switches is 3-step or based on 3 positions. The working contacts are actuated in the middle position. For this purpose we have implemented a clearly perceptible pressure point on the design side. In case of panic action / injury the operator would either press firmly (3rd stage) or release the handle (1st stage). Both times the working contacts would be deactivated and thus the system would be stopped. The 2nd stage must therefore be actively operated and held.