The ATChanger allows the automated exchange of plasma torch heads and is, therefore, as the first changing unit worldwide a key component towards the full automation of plasma cutting processes. Users benefit from reduced downtimes which lead to increased productivity. The plasma cutting system's capacity can be better utilised when performing frequently changing cutting tasks because no manual changing times are necessary anymore and the cutting system can be controlled almost automatically. The ATChanger can be used in combination with cutting tables and robot systems.