Railway companies: CFR - Romanian State Railways
Builder: UDR (Resita - Romania)
Tractive effort: 13500kgf
Engine length: 10659mm
The first locomotive built at UDR was 50 243 - REGELE FERDINAND I. It was engineered using the German G.10 project, in order to pull freight trains both on main and secondary lines. Some of the locomotives were adapted in order to reach max. speed of 70 km/h and these were used to pull passenger trains and fast parcel trains.
A total of 261 locomotives were manufactured during 1926-1944.