| Class | Livery | Producer | Prod. Code | Railways | Numeration |
| Be 4/6 | brown | Roco | 23273 | SBB | 12320 |
| Anno di costruzione/Year of construction: | 1919 -1923 |
| Numerazione/Service numbers: | 12301-12342 |
| Rodiggio: | 2'BB1' |
| Potenza (Kw)/Power (Kw): | 1265-1790 |
| V max (Km/h): | 75 |
| Lunghezza (cm)/Lenght (cm): | 16500 |
| Stazza (T)/Weight (T): | 107/111 |
| Note: | 1963-1976 out of service. 12320 historic loco in Winterthur. 12332 placed in Trasportation's Museum of Lucern. |
