These switching elements have internal plungers and can therefore only be combined with emergency stop and mushroom pushbuttons.
The QC switching elements can be snapped into the actuators without tools and without much effort. Wiring is done in a conventional way, directly with flat plugs. The fast and cost-effective variant where no printed circuit board is profitable.
The NC contacts of these switching elements are positively isolated in accordance with IEC 60947-25-1-1.