The main Russian railways freight locomotive with electric transmission. Further improvement of the series TÈ10S. Locomotives 2TÈ10UT equipped with gearboxes, providing structural speed of 120 km/h, and the brake of passenger type. Total for the period from 1989 to 1996 he was issued 549 series 2te10u diesel locomotives, 2TÈ10UT and 79 99 3TÈ10U. In 1991, the industrial locomotive modification was released under the name 2TÈ10UP. On inaccurate information only built one or two such locomotive.