A Southern Class 377/7 at Watford Junction in 2017
The interior of a Southern Class 377/6
In service
May 2003 – present
Manufacturer
Bombardier Transportation
Built at
Derby Litchurch Lane Works
Family name
Electrostar
Replaced
Class 319
Class 421
Class 423
Class 455
Class 456
Class 313
Number built
211 units (excluding 28 375/3 conversions)
Successor
Class 700 (Thameslink)
Formation
377/1/2/4/5: 4 cars per unit (DMOC-MOSL-PTOSL-DMOC)
377/3: 3 cars per unit (DMOC-PTOSL-DMOS)
377/6/7: 5 cars per unit (DMOC-MOSL-PTOSL-MOS(2)-DMOS)
Owners
Porterbrook[1]
Operators
Southern
Southeastern
Specifications
Car length
20.4 m (66 ft 11+1⁄8 in)
Width
2.80 m (9 ft 2+1⁄4 in)
Height
3.78 m (12 ft 4+7⁄8 in)
Maximum speed
100 mph (161 km/h)
Weight
173.6 t (170.9 long tons; 191.4 short tons) (377/1, /2, /4, /5)
133.1 t (131.0 long tons; 146.7 short tons) (377/3 only)
Traction motors
4–8 × 200 kW (270 hp)
Power output
1,200 kW (1,600 hp) (377/1, /2, /4, /5)
800 kW (1,100 hp) (377/3 only)
1,400 kW (1,900 hp) (377/6 and /7)
Electric system(s)
750 V DC 3rd rail
25 kV 50 Hz AC Overhead lines (377/2, 377/5 and 377/7 only)
Current collector(s)
Contact shoe
Brecknell Willis pantograph (377/2, 377/5 and 377/7 only)
Coupling system
Dellner
Multiple working
Within class, Class 378[2] and Class 379[2]
Track gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
The British Rail Class 377 Electrostar is a British dual-voltage electric multiple unit passenger train (EMU) built by Bombardier Transportation on its Electrostar platform at Derby Litchurch Lane Works from 2001 to 2014.
^Sherratt, Philip, ed. (2023). "ROSCO Fleets". Modern Railways: Review 2023. Stamford: Key Publishing. pp. 18–19. ISBN 978-1-80282-569-5.
^ abPritchard, R. N. (2012). British railways locomotives & coaching stock 2012. Platform 5. pp. 292, 294. ISBN 978-1-902336-92-3. OCLC 795598388.
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