VR Class Sm4

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VR Class Sm4
2 refurbished Sm4 units side by side at Helsinki Central station.
The interior of an unrefurbished Sm4 unit
Manufacturer	CAF, Fiat Ferroviaria, Alstom
Family name	Coradia
Constructed	1998–2005
Entered service	1999
Refurbished	VR Hyvinkää workshop (2013–2016)
Number built	30
Formation	2 cars
Fleet numbers	6301+6401 – 6310+6410 (1998-1999), 6311+6411 – 6324+6424 (2004), 6325+6425 – 6330+6430 (2005)
Capacity	192(+8) seats + 100 standing places
Operators	VR Group
Specifications
Car length	26.45 m (86 ft 9 in)
Width	3.24 m (10 ft 8 in)
Height	4.4 m (14 ft 5 in)
Floor height	580 mm (22.8 in)
Platform height	550 mm (21.7 in)
Doors	4 per side
Maximum speed	160 km/h (99 mph)
Weight	114 t (112 long tons; 126 short tons)
Traction motors	2 × 600 kW (805 hp)
Power output	1,200 kW (1,609 hp)
Electric system(s)	25 kV 50 Hz AC catenary
Current collector(s)	Pantograph
UIC classification	B′2′+2′B′
Safety system(s)	ATP-VR/RHK
Track gauge	1,524 mm (5 ft)

The Sm4 electric multiple unit (EMU) is a low-floor train used by the VR Group for longer-distance Helsinki commuter rail services. The initial order was for ten EMUs with the first unit entering service in 1999. Another 20 units were ordered in 2002 and the deliveries were completed in 2005. The Spanish company CAF was contracted to manufacture the units, based on a design by Fiat Ferroviaria (later acquired by Alstom).^[1]