The Furka-Oberalp-Bahn (FO) acquired these Bo-Bo locomotives in 1979 for the purpose of hauling car shuttle trains through the then forthcoming Furka Base Tunnel.
On , the locomotives became the property of the Matterhorn Gotthard Bahn (MGB), following a merger between the FO and the Brig-Visp-Zermatt railway (BVZ).