British Rail Class 331

British Rail Class 331
*Civity*
British Rail Class 331; Civity
	Class 331 at Stoke-on-Trent in November 2023
	Interior
In service	1 July 2019 – present
Manufacturer	CAF
Built at	Zaragoza, Spain; Newport, Wales (1 unit only);
Family name	Civity
Replaced	Class 319; Class 321; Class 322;
Constructed	2017–2020
Entered service	2019–2020
Number built	43; (31 × 331/0, 12 × 331/1);
Formation	3 cars per 331/0 unit:; DMSL-PTS-DMS; 4 cars per 331/1 unit:; DMSL-PTS-TS-DMS;
Fleet numbers	331/0: 331001–331031; 331/1: 331101–331112;
Capacity	331/0: 184 seats (plus 19 tip-up); 331/1: 260 seats (plus 23 tip-up);
Owners	Eversholt Rail Group
Operators	Northern Trains
Depots	Neville Hill (Leeds); Allerton (Liverpool); Shipley (future);
Specifications
Car body construction	Aluminium
Train length	331/0: 71.40 m (234 ft 3 in); 331/1: 94.75 m (310 ft 10 in);
Car length	DM vehs.: 24.026 m (78 ft 9.9 in); Trailers: 23.350 m (76 ft 7.3 in);
Width	2.712 m (8 ft 11 in)
Height	3.870 m (12 ft 8 in)
Doors	Double-leaf sliding plug; (2 per side per car);
Wheelbase	Bogies:; 2.250 m (7 ft 5 in); Over bogie centres:; 16.000 m (52 ft 6 in);
Maximum speed	100 mph (161 km/h)
Axle load	DMSL: 11.30 t (11.12 long tons); PTS: 8.88 t (8.74 long tons); TS: 7.97 t (7.84 long tons); DMS: 11.21 t (11.03 long tons); (tare);
Traction motors	8 × TSA TME 52-15-4; asynchronous three-phase AC; (4 per DM vehicle)
Power output	1,760 kW (2,360 hp); (220 kW (300 hp) per motor);
Acceleration	1.3 m/s2 (2.9 mph/s) max.
Electric system(s)	25 kV 50 Hz AC overhead
Current collector(s)	Pantograph (Brecknell Willis)
UIC classification	331/0: Bo′Bo′+2′2′+Bo′Bo′; 331/1: Bo′Bo′+2′2′+2′2′+Bo′Bo′;
Braking system(s)	Electro-pneumatic (disc) and regenerative; (Knorr-Bremse EP2002);
Safety system(s)	AWS; TPWS; (plus provision for ETCS);
Coupling system	Dellner
Multiple working	Within class
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
	Sourced from unless otherwise noted.

The British Rail Class 331 Civity is a class of electric multiple unit built by CAF, owned by Eversholt Rail Group, and currently operated by Northern Trains. A total of 43 units have been built – 31 three-car units and 12 four-car units. Construction of the trains started in July 2017 and they were phased into service from 1 July 2019.