ÖBB Class 4020
| ÖBB 4020 | |
|---|---|
4020 262 in Perchtoldsdorf | |
| Stock type | Electric multiple unit |
| In service | 1978 – 2025 (planned) |
| Manufacturer | Mechanical part: SGP, Electrical equipment: BBC, Siemens ELIN |
| Constructed | 1978–1987 |
| Number built | 120 trainsets, 07/2024 still 29 in passenger service |
| Capacity | 184 (56+64+64) |
| Operators | ÖBB |
| Specifications | |
| Train length | 69,400 millimetres (2,730 in) |
| Car length | 23.3 m (76 ft 5+5⁄16 in) (rail-/control carriage) 22.8 m (74 ft 9+5⁄8 in) (intermediate carriage) |
| Width | 2,872 mm (9 ft 5+1⁄16 in) |
| Height | 3,750 mm (12 ft 3+5⁄8 in) |
| Floor height | 1150 mm |
| Maximum speed | 120 km/h (75 mph) |
| Acceleration | 0.7 m/s/s (1.6 mph/s) |
| Electric system(s) | 15 kV 16.7 Hz AC |
| Current collector(s) | Pantograph |
| Braking system(s) | Wave disk brakes
Resistance brake, wheel disk brakes, additional block brake |
| Safety system(s) | Sifa, PZB90 |
| Coupling system | Automatic center buffer coupling type Scharfenberg (at Cab ends) Mechanical close coupling via coupling rods |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
The ÖBB class 4020 of the Austrian Federal Railways (ÖBB) are electric multiple units (EMU) developed by Simmering-Graz-Pauker (SGP). In the narrower sense, 4020 is the designation of the railcars, the control cars are referred to as series 6020 and the intermediate cars as series 7020. They are the second generation of the Vienna rapid transit trains and were also used throughout Austria in regional transport. Operation in scheduled services began in October 1978, the sets were manufactured by Simmering-Graz-Pauker in Graz.