SNCF triple-voltage electric freight locomotive

437052 (the leading 4 indicates it is used by SNCF fret) seen in Thionville. (Geoff Churchman)

The French SNCF Class BB 37000 "Prima" electric freight locomotives built by Alstom are a triple-voltage - 1.5 kV DC, 15 kV 16⅔ Hz AC and 25 kV 50 Hz AC - version of the Class BB 27000.

A total of 60 were built from 2004 although one was destroyed in an accident in October 2006.

Length: 19.72 metres (64 ft 8 in)
Locomotive weight: 90 tonnes (89 long tons; 99 short tons)
Top speed: 140 km/h (87 mph)
Power output: 4,200 kW (5,600 hp)