British Rail Class 71

British Rail Class 71/2
E5001 at Doncaster Works.
Type and origin Power type Electric Builder British Railways’ Doncaster Works Build date 1958–1960 Total produced 24
Specifications Configuration: ​  • Whyte Bo-Bo  • UIC Bo'Bo' Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Wheel diameter 4 ft 0 in (1.219 m) Loco weight 77.00 long tons (78.24 t) Electric system/s 660–750 V DC Current pickup(s) Third Rail (mainline) Pantograph (sidings) Traction motors English Electric 532, 4 off Train heating Electric Train Heating Train brakes Dual Vacuum and Air
Performance figures Top speed 90 mph (145 km/h) Power output One-hour: 2,700 hp (2,010 kW) Continuous: 2,300 hp (1,720 kW) Tractive effort 43,800 lbf (195,000 N) Brakeforce 68 long tons-force (678 kN)
Career Railroad(s) British Railways Number E5000–E5023; later E5001–E5024; later 71001–71014 Axle load class Route availability 6 Disposition 10 rebuilt to class 74, 13 scrapped, 1 preserved

The British Rail Class 71 was an electric locomotive used on the Southern Region of British Railways. Unlike most other Southern Region electric locomotives (such as the class 73s & 74s) they could not operate away from the electrified (750 V DC third rail) system.