Mitsubishi locomotives, built in Spain in 1982-1983. With 3 2-axled bogies each, this locomotives are used in the heavier freight trains, as well as on the most complicated lines of the spanish network. That's why they are based in Llanera, near Oviedo, and operate mainly on the Puerto de Pajares and Miño lines.
- Steel Trasona - Sagunto
- Coal 55720/1 Aboño - La Robla
- Cement 83666 Muriedas - Mataporquera
- Containers 80210/1 Villagarcia de Arousa - Madrid-Abroñigal
- Bioetanol 81262/3 Babilafuente - Muriedas
- Railsider 58274/5 Trasona - Busdongo
- Coal 82234/5 Aboño - La Robla
- Cimento 83666 Muriedas - Mataporquera
- Steel 68626/7 Miranda de Ebro - Trasona
- Steel 58272 Trasona - Busdongo
- Grain 81120/1 Arevalo - Xixon
- Coal Aboño - La Robla
- Steel 82828/9 Poago - Salamanca
- Steel 82926/7 Miranda de Ebro - Trasona
- Coal train 82232/3 Aboño - La Robla
- Railsider 82470/1 Sagunt - Trasona
- Steel coils 58622/3 Miranda de Ebro - Trasona
- Steel coils 52874 Trasona - Busdongo
- Trasona - Busdongo
- Renfe 251.029 Trasona - Sagunt
- Renfe 251.020 Busdongo - Trasona
- Steel train 82470/1 Sagunt - Trasona
- Steel train 82470/1 Sagunto - Leon CL
- Empty steel 59220/1 Leon CL - Trasona
- Trasona - Lugo de Llanera
- La Robla
- Coal 82230/1 La Robla - Aboño
- Coal 55226/7 Aboño - La Robla
- Coal 83286/7 La Robla - Aboño
- Steel 58762/3 Trasona - Miranda de Ebro