| RjB 20–22 | |
| Powertype: | Diesel-hydraulic |
| Builder: | Henschel |
| Serialnumber: | 30271–30273 |
| Builddate: | 1961 |
| Totalproduction: | 3 |
| Aarwheels: | C |
| Length: | 8.9m (29.2feet) |
| Maxspeed: | 60kph |
| Poweroutput: | 368 kW |
| Operator: | Norsk Transport |
| Officialname: | 20, 21, 22 |
| Locale: | Rjukanbanen |
RjB 20, 21 and 22 were three diesel-hydraulic locomotives operated by Norsk Transport on Rjukanbanen in Norway. They were mostly used for shunting at Rjukan and at Mæl.[1]
They were delivered in 1961, and remained in service until 1991 when the line closed; no. 20 remains at Rjukan, while no. 21 was sold to Pepeteries de Golbey of France and no. 22 was transferred to Norsk Hydro at Menstad.