E531 series

Infobox EMU
name = E531 series

---

imagesize = 240px
caption = An E531 series train at Kita-Senju Station
InService = 2005 - Present
Manufacturer =
Family =
Built =
Refurbishment =
Formation = 5/10 cars per trainset
Operator = JR East
Depots = Katsuta
LinesServed = Jōban Line, Mito Line
CarBody =
CarLength = 20,000 mm
CarWidth = 2,966 mm
CarHeight =
MaxSpeed = 130 km/h
Weight =
Capacity =
Acceleration = 2.5 km/h/s
Deceleration =
Traction =
Power =
Gauge = 1,067 mm
Voltage = 1,500 V DC & 20 kV AC overhead
Brakes = Regenerative brake
SafetySystem = ATS-SN, ATS-P, ATS-Ps

The E531 series is an electric multiple unit used by East Japan Railway Company (JR East) in Japan. It was introduced by JR East on July 9 2005 to replace the aging 403 and 415 series EMUs running on the Jōban Line from Ueno station in Tokyo. The stock is a dual-voltage (1,500 V DC & 20 kV AC) development of the DC-only E231 series suburban EMU design, and can run at speeds of up to 130 km/h in service.

Trains are formed in 10-car (set numbers K-401 onward) and 5-car (set numbers K-451 onward) sets. 15-car formations are generally run between Ueno and Tsuchiura. 10- and 5-car sets operate singly north of Tsuchiura, and 5-car sets are used on the Mito Line.

Pairs of double-deck Green cars were added to the 10-car sets from 2007-01-06, and all 10-car sets included Green cars by the start of the revised timetable on 2007-03-18.

Lines using this type of rolling stock

*Jōban Line (Ueno - Iwaki)
*Mito Line

See also

*E231 series
*403 series/415 series
*E501 series

External links

* [http://www.jreast.co.jp/train/local/e531.html JR E531 series (Japanese)]
* [http://www.jreast.co.jp/press/2003_2/20031205.pdf JR East press release announcing new trains in December 2003]

References

* 2006 JR Rolling Stock Handbook - Neko Publishing
* JR EMU Formations (Winter 2007) - JRR Publishing