British Rail Class 555

British Rail Class 555
Metro
Class 555 at Callerton Parkway
In service18 December 2024 (2024-12-18) – present
ManufacturerStadler Rail
AssemblyStadler Rheintal AG
Built atSt. Margrethen, Switzerland
Family nameMETRO
ReplacedTyne and Wear Metrocar
Constructed2021–2025
Number built46
Number in service23
Formation5 cars per unit
Capacity600 (104 seated, 496 standing)
OperatorTyne & Wear Metro
Depots
Lines served
  • Green (Airport – South Hylton)
  • Yellow (St James – South Shields)
Specifications
Car body constructionAluminium
Train length59.900 m (196 ft 6.3 in)
Width2.650 m (8 ft 8.3 in)
Height3.445 m (11 ft 3.6 in)
Floor height940 mm (3 ft 1 in)
DoorsDouble-leaf sliding plug, each 1.400 m (4 ft 7.1 in) wide (8 per side)
Wheel diameter720 to 645 mm (28.35 to 25.39 in) (new–worn)
Wheelbase
  • Motor bogies: 2.200 m (7 ft 2.6 in)
  • Trailing bogies: 2.000 m (6 ft 6.7 in)
Maximum speed80 km/h (50 mph)
Weight
  • Unladen: 98 tonnes (96 long tons; 108 short tons)
  • At crush load: 141 tonnes (139 long tons; 155 short tons)
Axle load12.5 tonnes (12.3 long tons; 13.8 short tons) max.
Traction systemIGBT-VVVF
Traction motors8 × TSA TMF 41-17-4,
each of 120 kW (160 hp)
Power output
  • At wheels:
  • Max.: 1,320 kW (1,770 hp)
  • Cont.: 942 kW (1,263 hp)
Tractive effortStarting: 140 kN (31,000 lbf)
AccelerationStarting: 1.35 m/s2 (4.4 ft/s2)
Electric systems1,500 V DC overhead
Current collectionPantograph
UIC classification2′(Bo)′(Bo)′(Bo)′(Bo)′2′
Braking systemsElectro-pneumatic (disc) and regenerative, plus magnetic
Safety systems
Coupling systemDellner type 12
Multiple workingWithin class
SeatingLongitudinal
Track gauge4 ft 8+12 in (1,435 mm) standard gauge
Notes/references
Sourced from except where otherwise noted.

The British Rail Class 555 Metro is a class of electric multiple units, commissioned and built for the Tyne and Wear Passenger Transport Executive (Nexus) by the Swiss company Stadler Rail, at a total cost of £362 million, for use on the Tyne and Wear Metro. For operation on Network Rail controlled tracks between Pelaw Junction and Sunderland, they are designated on TOPS as the Class 555.

Tyne and Wear Metrocars have been in use since the system opened in 1980. In 2016, Nexus began work to replace these trains, with Stadler Rail chosen in January 2020, and the order of 46 trains confirmed in March 2020. To facilitate operation of the new trains, a new Metro Fleet Depot in Gosforth was built, and 40 of the 60 stations are having platform heights modified. On 18 December 2024, the first unit entered passenger service. By February 2026, all 46 new trains had been delivered, with full replacement of the Tyne and Wear Metrocars to be completed later in 2026.