The protectors, made of industrial plastic, protect the operator’s hand from dangerous impacts or pinch points. They also prevent improper operation when using lever or axial pushbuttons for two-handed operation if the distance from pushbutton to pushbutton is less than 550 mm by preventing the simultaneous actuation of both pushbuttons with the hand and elbow of the same arm. The protector for angled plugs protects the M12 angled plug on the operating handle from impacts.