SJ X40
| X40 | |
|---|---|
X40 at Eskilstuna | |
| In service | 2006–present |
| Manufacturer | Alstom |
| Built at | Salzgitter, Lower Saxony, Germany |
| Family name | Coradia Duplex |
| Constructed | 2004–2008 |
| Number built | 43 |
| Formation | 2 cars (16 units) 3 cars (27 units) |
| Fleet numbers | 3301-3343 |
| Capacity | 153 (2 cars) 252 (3 cars) |
| Operators | SJ |
| Depots | Hagalund |
| Specifications | |
| Train length | 55,100 mm (180 ft 9 in) (2 cars) 81,500 mm (267 ft 5 in) (3 cars) |
| Maximum speed | 200 km/h (125 mph) |
| Weight | 140 t (137.8 long tons; 154.3 short tons) (2 cars) 205 t (202 long tons; 226 short tons) (3 cars) |
| Power output | 1,600 kW (2,100 hp) (2 cars) 2,400 kW (3,200 hp) (3 cars) |
| Electric system(s) | 15 kV 16.7 Hz AC catenary |
| Current collector(s) | Pantograph |
| Safety system(s) | ATC-2 |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
The X40 is a series of electric multiple units operated by SJ of Sweden. They are in service from Stockholm to Linköping, Västerås/Örebro, Uppsala and Gävle/Sandviken, and since 2010 to Gothenburg via Västerås. The double decker trains were built by Alstom from 2004–2008, with 43 units being delivered, either in a two-car or three-car configuration. It is based on the Coradia series, very similar to the French SNCF Class Z 26500 double decker trains, and similar to the X60-series.
The X40 is the first true double-decker train to operate in Sweden, although the first and last cars of the Y3 were built in a style similar to dome cars, connected to single-deck coaches. From 2019 onwards, the bilevel Stadler KISS (known as DOSTO in Sweden) has also been used in the Mälardalen and Uppsala regions of Sweden, and since 2023, Tåg i Bergslagen has operated the same train sets in the Bergslagen region.
Among crew and technical support the vehicle early got nicknamed "Flodhäst", in English "Hippo - big, gray and unpredictable". The X40 is currently being refurbished which will modernise the double-deckers so that they can last for about 15 more years.