ChS4 [1]
ChS4
Type and origin Power type Electric Builder Škoda Works Build date 1963-1972 Total produced 232
Specifications Gauge 1,524 mm (5 ft) 1,520 mm (4 ft 11+27⁄32 in) Russian gauge Wheel diameter 1,250 mm (4 ft 1 in) Length 19.980 m (65 ft 6.6 in) Height 5,240 m (17,191 ft 7 in) Axle load 20.5 t (20.2 long tons; 22.6 short tons) Loco weight 123 t (121 long tons; 136 short tons) Electric system/s 25 kV 50 Hz AC Catenary Current pickup(s) Pantograph
Performance figures Maximum speed 160 km/h (99 mph) Power output 5,100 kW (6,800 hp)
Career Operators РЖД (RZhD), БЧ (BCh), УЗ (UZ) Locale Russia Soviet Union Belarus Ukraine

The ChS4 (Czech: ČS4, Russian: ЧС4) is an electric mainline AC passenger locomotive used in Russia, Belarus, and Ukraine.

To overcome some ChS4 shortcomings, in 1971 a modernized version of locomotive was released. It is known as ChS4T in USSR and as 62E in Czechoslovakia.

• The Museum of the Moscow Railway, at Paveletsky Rail Terminal, Moscow
• Rizhsky Rail Terminal, Moscow, Home of the Moscow Railway Museum
• Varshavsky Rail Terminal, St.Petersburg, Home of the Central Museum of Railway Transport, Russian Federation
• History of rail transport in Russia