British Rail Class EF1

British Rail Class EF1
Type and origin Power type Electric Builder North Eastern Railway Build date 1914-1919 Total produced 10
Specifications Configuration: ​  • AAR Bo-Bo Gauge 1435 mm Electric system/s 1500V DC Current pickup(s) Pantograph Engine type 4x275hp, Siemens
Performance figures Power output 820 kW (1100 hp)
Career Railroad(s) North Eastern Railway LNER British Railways Class LNER & BR: EB1 Number in class 10 Number NER: 3-12 LNER: 6490-6499 BR: 26502-26511 Retired April 1964

The British Rail Class EF1 (Electric Freight 1) was a class of electrically powered locomotives used by British Rail in England. They were used during the pre-TOPS period. They were also classified as British Rail Class EB1 for a short period of time, although only a single locomotive was completely modified to EB1 condition.