British Rail Class ES1

British Rail Class ES1 was a class of two electric locomotives commissioned by the North Eastern Railway in 1902. They were of steeplecab design.

North Eastern Railways Class ES1
NER No.1, Locomotion museum, Shildon
Type and origin Power type Electric Builder British Thomson-Houston, with mechanical parts sub-contracted to Brush, for North Eastern Railway Build date 1903-1904 (contract signed with builders on 15 December 1902) Total produced 2
Specifications Configuration: ​  • Whyte Bo+Bo Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Wheel diameter 3 ft 0 in (0.914 m) Wheelbase 27 ft 0 in (8.230 m) Length 37 ft 11 in (11.557 m) Height with pantograph lowered 12 ft 11 in (3.937 m); raised 15 ft 9 in (4.801 m) Loco weight 56 tons (51 tonnes) Electric system/s 600–630 V DC Current pickup(s) Third rail or pantograph Traction motors British Thomson-Houston, 4 off Train heating None
Performance figures Top speed 27 mph (43 km/h) Power output 640 hp (477 kW) Tractive effort 25,000 lbf (111.2 kN)
Career Railroad(s) North Eastern Railway London and North Eastern Railway British Railways Number NER: 1–2 LNER 1–2, later 6480–6481 BR: 26500–26501 Axle load class Route availability 2 First run 1905 Retired 1964 Disposition No.1 preserved, No.2 scrapped in 1966