Fablok G1C is the first diesel locomotive built in Poland (especially in Second Polish Republic) by Fablok in Chrzanów. It was built in 1931 and was intended for works transportation.
Between 1929 and 1930, Fablok designed a small 2-axle locomotive with an electric transmission, intended for minor industrial establishments and auxiliary duties. It was designated G1C and was powered by a two cylinder, 60 hp Warchalowski-Diesel engine imported from Austria, which powered two 35 kW electric motors and axles through a chain transmission, it also featured an electrically welded frame[1].
The locomotive was completed in late 1931 and designated 406/1931, it was delivered for tests to the Brzeszcze colliery, and was returned to the manufacturer, proving too weak for the service at the company's sidings. It was then used by Fablok for various tests and works transport in 1939. During World War II, the locomotive was captured by Gemany, which was dismantled and converted into a flatcar and was used for works transport until the 1970s[1].