Sources:[3] except where noted Details refer to original 5 locomotives acquired, for more information on the five units added in 2010 & 2016 seeNS Class 6400
Five locomotives were built, numbered 0001–0005. They carry a yellow and grey livery and are used byGetlink for rescuing trains in theChannel Tunnel, and for propelling service trains in the channel tunnel. They are cleared to travel to Calais, Ashford, or St. Pancras; since 2007 they have been authorised to rescue trains onHigh Speed 1 in the event of a power failure.[6] They have also been used to haul theSNCF TGV Iris 320 test train through the Channel Tunnel.[7]
In 2007 the locomotives were fitted withdiesel particulate filters for theexhaust gases,[8] which replaced the exhaust scrubber wagons that were previously coupled to the engines.[9]
Following a series of tunnel breakdowns due to snow during winter 2009/10, during which the locomotives were extensively used,[10] in November 2010 Eurotunnel announced it was to acquire two moreKrupp rescue locomotives[note 1] with co-financing fromEurostar, at a cost of €1.3 million.[1][note 2] The locomotives acquired were similarNS 6400 locomotives bought second hand from DB Schenker Nederland,[11] which were renumbered as 0006-0007.[2] Eurotunnel acquired a further three in September 2016. One of these three will be retained as ashunter to work at the goods yard atCalais-Fréthun, and has received the silver and blueEuroporte livery, while the other two have the grey and yellow Eurotunnel livery identical to the remainder of the fleet.
^"Maintenance"(PDF). Inspecting the infrastructure at 100 km/h.Annual Report (Report). Eurotunnel Group. 2010. p. 24. Archived fromthe original(PDF) on 7 August 2011. Retrieved7 June 2011.IRIS 320 measuring train … since December 2010, … inspecting the Channel Tunnel, pulled by a Eurotunnel diesel locomotive at 100 km/h … every two months
^"MaK - DE 1004",www.loks-aus-kiel.de (in German), see individual locomotive history sections
Locomotive types initalics are in production. G-type locomotives have diesel-hydraulic transmissions, DE-type locomotives have diesel-electric transmissions.