page_title: British Rail Class 373
section_title: Fleet information
hierarchical_section_title: British Rail Class 373 / Fleet information
caption_attribution_description: Passing Factory Junction on the main line from Victoria through to Kent is a Eurostar service headed by power car Class 373, no. 3104 on 2 June 2007.
context_page_description: The British Rail Class 373 or TGV TMST is a French designed and built electric multiple unit train that is used for Eurostar international high-speed rail services from the United Kingdom to France and Belgium through the Channel Tunnel. Part of the TGV family, it was built with a smaller cross-section to fit the smaller loading gauge in Britain, was originally capable of operating on the UK third rail network, and has extensive fireproofing in case of fire in the tunnel. It is both the second longest—387 metres —and second fastest train in regular UK passenger service, operating at speeds of up to 300 kilometres per hour.
  Known as the TransManche Super Train or Cross-channel Super Train before being introduced in 1993, the train is designated Class 373 under the British TOPS classification system and series 373000 TGV in France. It was built by the French company GEC-Alsthom at its factories in La Rochelle, Belfort and Washwood Heath and by Brugeoise et Nivelles in Bruges.
context_section_description: Each power car has a four-digit number starting with "3" (3xxx). This designates the train as a Mark 3 TGV (Mark 1 being SNCF TGV Sud-Est; and Mark 2 being SNCF TGV Atlantique). The last digit denotes the country of ownership:
  3730xx: UK
  3731xx: Belgium
  3732xx: France
  3733xx: "Regional" and "North of London" Eurostar sets
  373999: Spare Powercar
  Each half-set is numbered separately.
  including power car.
  Avignon and Alps ski-train services are worked by SNCF quad-voltage sets.
caption: 373103/104 passes Wandsworth Road in London.
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