| 281 series | |
|---|---|
 A 281 series train | |
| Manufacturer | Kawasaki Heavy Industries, Kinki Sharyo |
| Family name | Haruka |
| Constructed | 1994–1995 |
| Entered service | 4 September 1994 |
| Number built | 63 vehicles |
| Number in service | 63 vehicles |
| Formation | 6/3 cars per trainset |
| Fleet numbers | HA601 – HA609, HA631 – HA633 |
| Capacity | 258 |
| Operators | JR-West |
| Depots | Hineno |
| Lines served | Tokaido Main Line, Osaka Loop Line, Hanwa Line, Kansai Airport Line |
| Specifications | |
| Car body construction | Steel |
| Car length | 20.74 m (68 ft 1 in) (end cars) 20 m (65 ft 7 in) (intermediate cars) |
| Width | 2.92 m (9 ft 7 in) |
| Height | 3.55 m (11 ft 8 in) |
| Maximum speed | 130 km/h (81 mph) |
| Traction system | Variable frequency (3-level GTO) |
| Acceleration | 1.8 km/(h⋅s) (1.1 mph/s) |
| Electric system(s) | 1,500 V DC overhead |
| Current collector(s) | WPS27D scissors-type pantograph |
| Bogies | WDT55 (motored) WTR239 (trailer) |
| Braking system(s) | Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake |
| Safety system(s) | ATS-P, ATS-SW |
| Multiple working | 271 series |
| Track gauge | 1,067 mm (3 ft 6 in) |
The 281 series (281系, 281-kei) is a DC electric multiple unit (EMU) train type operated by West Japan Railway Company (JR-West). Introduced on September 4, 1994, it is used exclusively for Kansai Airport Limited Express Haruka services to and from Kansai International Airport. Provisions are made for luggage racks and dedicated luggage room.