The RhB Ge 4/4^II 629 Tiefencastel at the Landquart depot roundhouse

RhB has the most locomotives of this class of thyristor electric locomotives. While at least 3-4 of the more modern Ge 4/4^III hide in and around Vereina base tunnel these more traditionally looking locomotives appear everywhere on the network. They run the Disentis to Scuol RE trains, the shuttle trains in the Engadin and they haul freight trains to Ilanz and on the Albulabahn.