E231 series

E231 series
Chuo–Sobu Line E231-0
In service	2000–now
Scrapped	2010–2011 (6 Door cars)
Number built	2,736
Number in service	2,476 (+48 converted)
Successor	E235 series (Yamanote Line)
Specifications
Track gauge	1,067mm

The E231 series (E231系, E231-kei) is an electric multiple unit (EMU) train type used for commuter and outer-suburban services operated by East Japan Railway Company (JR East) in Japan since 2000.

Variants

• / / E231-0 series: 8-car, 10-car, and 10+5-car sets used on the Chūō–Sōbu Line, Jōban Line, Narita Line, Musashino Line, and the Keiyō Line
• E231-500 series: 10-car sets used on Chūō–Sōbu Line
• E231-800 series: 10-car sets used on Chūō–Sōbu Line and Tokyo Metro Tozai Line interrunning services
• E231-900 series: 8-car set used on the Musashino Line and Keiyō Line
• E231-1000 series: 10+5-car suburban sets used on the Tōkaidō Main Line, Utsunomiya Line, and Takasaki Line, and on Ueno–Tokyo Line and Shōnan–Shinjuku Line through services
• E231-3000 series: 4-car sets converted from former E231-0 series sets for use on the Kawagoe Line and Hachikō Line

Former operations

• E231-500 series: 11-car sets used on the Yamanote Line from 21 April 2002 until 20 January 2020
• E231-900 series: 10-car set used on the Chūō–Sōbu Line from December 1998 until 25 February 2020 (designated as 209-950 series until June 2000)

Gallery

• 
  E231-0
• 
  E231-500 (Chou-Sobu)
• 
  E231-500 (Yamanote)
• 
  E231-800
• 
  E231-900
• 
  E231-1000
• 
  E231-3000