British Rail Class 444
The British Rail Class 444 Desiro is an electric multiple-unit passenger train built by Siemens Transportation Systems in Austria between 2002 and 2004. The Class 444 currently operate on express passenger services for South Western Railway.
| British Rail Class 444 Desiro | |
|---|---|
A pair of South Western Railway Class 444s near Southampton Airport Parkway in 2021 | |
Refurbished standard-class saloon | |
| In service | 21 April 2004 – present |
| Manufacturer | Siemens Transportation Systems |
| Assembly | Siemens SGP Verkehrstechnik |
| Built at | Vienna, Austria |
| Family name | Desiro |
| Replaced | |
| Constructed | 2002–2004 |
| Refurbished | 2017–2020 |
| Number built | 45 |
| Formation |
|
| Fleet numbers | 444001–444045 |
| Capacity |
|
| Owners | Angel Trains |
| Operators | South Western Railway |
| Depots | Northam |
| Specifications | |
| Car body construction | Aluminium |
| Train length | approx. 119 m (390 ft 5 in) |
| Car length | 23.57 m (77 ft 4 in) |
| Width | 2.796 m (9 ft 2.1 in) |
| Floor height | 1.157 m (3 ft 9.6 in) |
| Doors | Single-leaf sliding plug (2 per side per car) |
| Wheel diameter | 850–786 mm (33.46–30.94 in) (new–worn) |
| Wheelbase | Bogies: 2.600 m (8 ft 6.4 in) |
| Maximum speed | 100 mph (160 km/h) |
| Weight |
|
| Traction system | Siemens SIBAS IGBT |
| Traction motors | 8 × Siemens 1TB2016-0GB02 asynchronous three-phase AC |
| Power output | 1,500 kW (2,000 hp) (at wheel) |
| Tractive effort | Starting: 200 kN (45,000 lbf) |
| Acceleration | approx. 1 m/s2 (3.3 ft/s2) |
| Electric system(s) | 750 V DC third rail |
| Current collector(s) | Contact shoe |
| UIC classification | Bo′Bo′+2′2′+2′2′+2′2′+Bo′Bo′ |
| Bogies | Siemens SGP SF5000 |
| Minimum turning radius | 120 m (393 ft 8 in) |
| Braking system(s) | Electro-pneumatic (disc) and regenerative |
| Safety system(s) |
|
| Coupling system | Dellner 12 |
| Multiple working | Within class, and with Class 450 |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The class first entered service with South West Trains in 2004.
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