For replacement of old fashioned steam shunters Swiss State Railway SBB ordered 46 samples of diesel electric four axled Bm 4/4. The 12 cylinder diesel develops 620 kW and enables the loco to reach a maximum speed of 75 km/h.
For use with heavy maintenance trains Swiss narrow gauge line RhB ordered 4 samples of diesel electric Gmf 4/4 II loco at German manufacturer Schalker Eisenhütte. Prime mover MTU 12V 4000 R43L delivers 1800 kW at 1800 rpm and enables the loco to reach a maximum speed of 100 km/h.
For traction of trains for construction areas Swiss Rhetian Railway (RhB) ordered two diesel electric Gmf 4/4 242 and 243 at German manufacturer Kaelble-Gmeinder. The four axle locos are driven by a Caterpillar 12 cylinder prime mover 3412 DI-TA and reach a maximum speed of 60 km/h.
In 1962 Swiss Rhetian Railway ordered two diesel electric shunting locomotives Tm 2/2 at Raco/SLM. In 1990 the locos received new Cummins 4BT 3.9 84 HP prime movers and RhB re-numbered them 19 and 20.
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