British Rail Class 411

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British Rail Class 411
Connex South Eastern 1586 at London Victoria in Network SouthEast livery in 2003
In service	1956–2005
Manufacturer	BR Eastleigh
Number built	135 trainsets
Formation	power car + 2 trailer cars + power car
Operators	British Rail Network SouthEast South West Trains Connex South Central Connex South Eastern South Eastern Trains
Specifications
Train length	265 ft 8+1⁄2 in (80.988 m)
Width	9 ft 3 in (2.82 m)
Height	12 ft 6 in (3.81 m)
Maximum speed	90 mph (140 km/h)
Weight	Total - 159.4 t (156.9 long tons; 175.7 short tons)
Traction motors	Four
Power output	4 x 250 hp (190 kW) total 1,000 hp (750 kW)
Electric system(s)	750 V DC third rail
Current collector(s)	Contact shoe
Coupling system	Drop-head buckeye[1]
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge

The British Rail Class 411 (4CEP) electric multiple units were built at Eastleigh works from 1956–63 for the newly electrified main lines in Kent. These units, which used a British Railways Mark 1 bodyshell, were based on the earlier Southern Railway 4 COR design, built in 1937. Variants of the class 411 design included the class 410 and class 412 4 BEP units, which contained a buffet car in place of a standard trailer. They were later used on services in Sussex and Hampshire; following the privatisation of British Rail in 1995, the units were used by the Connex South Central, Connex South Eastern and South West Trains franchises. They were replaced by Juniper, Desiro, and Electrostar units. The fleet's lifespan was 49 years. These units are the longest-lived BR Mark 1 EMUs.