The class 03 steam locomotives were actually an emergency solution to the existing class 01 units. The DRG's program of locomotive types from 1923/24 had only planned the class 01 with its 20 ton axle load as a standard design express locomotive. The bad financial condition of the DRG however did not permit quick rebuilding of lines to 20 ton standards, so that by the end of the Twenties no class 01 units could be used, particularly in the North German districts. Older provincial railroad locomotives were also not suitable, because many lines were only rated for an axle load of 17 tons. So, a "lightweight express locomotive" was ordered from the locomotive builders with a maximum axle load of 17.5 tons which then appeared for the first time starting in 1930 as the 03 with three pre-production locomotives delivered from Borsig. They were followed by another 295 units by 1937.
Model features an mfx+ digital decoder, extensive sound functions, controlled high-efficiency propulsion with flywheel, 3 axles powered, traction tires, directional LED headlights and couple guide mechanism with NEM pocket on tender.