British Rail Class 377

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British Rail Class 377 "Electrostar"
Worthing Station 03.JPG
Southern Class 377 at Worthing railway station
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.