With the rebuilding of loading facilities, new ore transport cars, and more powerful locomotives came the great period of the class Dm 3 side rod electric locomotives from the end of the Sixties on. These were three close-coupled locomotives electrically linked to one another. Each of the three parts had four coupled driving axles. With a total output of 7,200 kilowatts / 9, 655 horsepower, and a total length of 35.25 meters / 115 feet 8 inches they were able to move 5,400 ton heavy ore trains. In 1996, LKAB took over handling the ore traffic including transport.
Loco features metal frame and body, mfx digital decoder, extensive sound functions, 2 high-efficiency propulsion systems with flywheels and one motor in each loco and 1 unit with an engineer's cab and 4 driving axles powered in each loco plus traction tires. All 3 units are permanently coupled together. Maintenance-free LED lighting can be controlled separately in digital operation. Additional features include detailed roof equipment and many separately applied details.