They were built for the Chosen Government Railway ("Sentetsu "), and after the partition of Korea were inherited by the North Korean State Railway, where they were known as the Chŏngisŏ (,"Electric 3") class.
They were built for the Chosen Government Railway ("Sentetsu "), but the war ended before delivery took place. During the Korean War all were captured by the Korean Peoples Army and taken to North Korea, where they were put into service by the Korean State Railway as the Chŏngisŏ (,"Electric 3") class.