British Rail Class 377
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| British Rail Class 377 "Electrostar" | |
|---|---|
 Southern Class 377 at Worthing railway station |
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| In service | 2002 - Current |
| Manufacturer | Bombardier Derby |
| Family name | Electrostar |
| Number built | 154 trainsets (excluding 28 375/3 conversions) |
| Formation | 3 cars per trainset (377/3 only) 4 cars per trainset (others) |
| Operator | Southern |
| Specifications | |
| Car length | 67 feet (20.4 m) |
| Width | 9 feet (2.8 m) |
| Height | 12½ feet (3.78 m) |
| Maximum speed | 100 mph (161 km/h) |
| Weight | 133.1 t (377/3 only) 173.6 t (others) |
| Power output | 2x373 = 746 kW kW (377/3 only) 3x373 = 1119 kW (others) 3x560 = 1680 kW (AC mode) |
| Voltage | 750 V DC 3rd rail 25 kV AC Overhead (377/2 only) |
| Gauge | 1,435 mm |
The Class 377 Electrostars are electric multiple units built by Bombardier Transportation (previously ADtranz) at their Derby Works, from 2001-present. The Electrostar family, which also includes Classes 357, 375 and 376, is the most numerous type of EMU built in the post-privatisation period of Britain's railways.
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