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
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 production 2
Configuration Bo+Bo
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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)
Locomotive weight 56 tons (51 tonnes)
Electric system(s) 600–630 V DC
Current collection method Third rail or pantograph
Traction motors British Thomson-Houston, 4 off
Top speed 27 mph (43 km/h)
Power output 640 hp (477 kW)
Tractive effort 25,000 lbf (111.2 kN)
Train heating None
Career 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


British Rail Class ES1 Media