LNER Class ES1

North Eastern Railway 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: ​  • UIC Bo′Bo′  • Commonwealth 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 Pantograph lowered: 12 ft 11 in (3.937 m) Pantograph raised: 15 ft 9 in (4.801 m) Loco weight 56 long tons (57 tonnes; 63 short tons) Electric system/s 600–630 V DC, Third rail or catenary Current pickup(s) Contact shoe or pantograph Traction motors British Thomson-Houston, 4 off Train heating None
Performance figures Maximum speed 27 mph (43 km/h) Power output 640 bhp (477 kW) Tractive effort 25,000 lbf (111.2 kN) 335 t (330 long tons; 369 short tons) @ 14 mph (23 km/h)
Career Operators North Eastern Railway London and North Eastern Railway British Railways Numbers 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

The NER Class ES1 (Electric Shunting 1)^[1] was a class of two steeplecab electric locomotives commissioned by the North Eastern Railway in 1902.

Both locomotives passed to the London and North Eastern Railway in 1923 and then to British Railways in 1948, but both were withdrawn before TOPS numbers could be applied.