The 285 series (285系 285-kei) is an electric multiple unit (EMU) train type operated jointly by Central Japan Railway Company (JR Central) and West Japan Railway Company (JR-West) on the overnight Sunrise Izumo and Sunrise Seto limited express services in Japan. These EMUs were introduced from 10 July 1998 to replace ageing locomotive-hauled "Blue Train" coaches which once operated on separate Seto and Izumo services between Tokyo, Shikoku and the Sanin region.
285 series on a Sunrise Seto service, 2019
|Manufacturer||Kawasaki Heavy Industries, Nippon Sharyo, Kinki Sharyo|
|Family name||Sunrise Express|
|Entered service||July 1998|
|Number built||35 vehicles (5 sets)|
|Number in service||35 vehicles (5 sets)|
|Formation||7 cars per trainset|
|Operator(s)||JR Central, JR-West|
|Line(s) served||Tokaido Main Line, San'yō Main Line, Seto-Ōhashi Line, Hakubi Line, Sanin Main Line|
|Car body construction||Steel|
|Car length||21,670 mm (71 ft 1 in)|
|Width||2,945 mm (9 ft 7.9 in)|
|Height||4,090 mm (13 ft 5 in)|
|Maximum speed||130 km/h (80 mph)|
|Traction system||Variable frequency (3-level IGBT)|
|Power output||1,760 kW|
|Power supply||1,500 V DC|
|Braking system(s)||Dynamic brake, regenerative brake, electronically controlled pneumatic brakes|
|Safety system(s)||ATS-P, ATS-SW|
|Track gauge||1,067 mm (3 ft 6 in)|
The trains are finished in a livery of "Morning Glow" red and "Morning Mist" beige with "Sun Rise" gold lining. 
As of 1 April 2015[update], the fleet consists of five sets, numbered I1 to I5. I1 to I3 are owned by JR-West, and are classified 285-0 series. Sets I4 and I5 are owned by JR Central, and are classified 285-3000 series (the individual cars are numbered in the 3000 range). All sets, I1 to I5, are composed as follows, with two motored ("M") cars and five non-powered trailer ("T") cars. Car 7 and 14 is at the Tokyo (eastern) end.
|Numbering||KuHaNe 285||SaHaNe 285-200||MoHaNe 285||SaRoHaNe 285||MoHaNe 285-200||SaHaNe 285||KuHaNe 285|
Each car includes toilet facilities.
The individual build details of the fleet are as shown below.
|Set No.||Manufacturer||Date delivered|
|I1||Kinki Sharyo||19 March 1998|
|I2||Kinki Sharyo||15 April 1998|
|I3||Kawasaki Heavy Industries||1 May 1998|
|I4||Kinki Sharyo||8 April 1998|
|I5||Nippon Sharyo||24 April 1998|
The trains entered service on 10 July 1998, with set I4 forming the down Sunrise Izumo, set I5 forming the down Sunrise Seto, set I3 forming the up Sunrise Izumo, and set I2 forming the up Sunrise Seto.
- 583 series, the first Japanese sleeping-car EMU type
- JR特急列車年鑑2014 [Limited Express Annual 2014] (in Japanese). Tokyo, Japan: Ikaros Publications Ltd. 20 December 2013. pp. 44–45. ISBN 978-4-86320-793-6.
- 新しい寝台特急電車のカラープラン決定について [Colour scheme for new sleeping car trains]. News release (in Japanese). Japan: West Japan Railway Company. 24 December 1997. Archived from the original on 5 February 1998. Retrieved 24 July 2015.
- JR電車編成表 2015夏 [JR EMU Formations - Summer 2015] (in Japanese). Japan: Kotsu Shimbunsha. 20 May 2015. p. 194. ISBN 978-4-330-56915-4.