To complement the electric railcars in use on secondary lines in the Silesian network, the Prussian State Railway put the EP 202 in service in 1915. Although it had been ordered with the 1-C wheel arrangement, it was produced as a 1-C-1 to carry the weight of the steam heating boiler. While the leading axle was a Bissel axle, the trailing axle below the boiler was an Adams axle. The motor had a diameter of 2,400 mm (94.5 inches) and drove the axles via crank axle and side rods.

The six other locomotives were only delivered between 1917 and 1921 due to the war. Since the railcars prevailed on the secondary lines, the EP 202 to 208 were soon used on the main line of the Silesian Mountain Railway. But when new, more powerful locomotives were introduced, they came to the flatter lines in Central Germany. Due to the growing train masses, they were subjected to increased wear and tear and had to be repaired with parts from the withdrawn ES 9 to 19. The Reichsbahn designated them E 30 and withdrew them between 1927 and 1930.