SNCF Class BB 9400

The SNCF Class BB 9400 was an electric locomotive of the SNCF. It was used to haul L’Aquilon, a high-speed passenger train between Paris, Dijon and Lyon-Perrache.[1] The locomotives were given the nickname "Vespa", as they were very lightweight.[2] They were one of a series of locomotives called the "BB Jacquemin", as they used bogies designed by engineer André Jacquemin. The locomotive itself was designed by noted French railway designer Paul Arzens.[3] In later years they hauled passenger trains on the difficult Béziers–Neussargues line.[4]

SNCF BB 9400
Example of the series in 1983
Type and origin Power type Electric Designer Paul Arzens André Jacquemin Builder Fives/MTE, mechanical CEM/MTE, electrical Build date 1967–1969 Total produced 135
Specifications Configuration: ​  • UIC Bo′Bo′ Gauge 1,435 mm (4 ft 8+1⁄2 in) Wheel diameter 1,020 mm (40 in) Length: ​  • Over beams 14,400 mm (570 in) Loco weight 60 t (59 long tons; 66 short tons) Electric system/s 1500 V DC Current pickup(s) Pantograph
Performance figures Maximum speed 130 km/h (81 mph) Power output: ​  • Continuous 2,210 kW (2,960 hp) Tractive effort 270 kN (61,000 lbf)
Career Numbers 9401–9535 Nicknames Vespa

The locomotive series was built between 1967 and 1969, numbered 9401 to 9535.[4] These fell into two groups; the original group was limited to 120 km/h (75 mph), with units BB 9531 to 9535 capable of 180 km/h (110 mph). These units operated under a 1,500 V DC catenary, with a power of 2,210 kW (2,960 hp). The locomotives are 14.40 m (47.2 ft) long and weigh 60 t (59 long tons; 66 short tons). They were fitted for multiple unit and push–pull working.[4] Some were modified in the 1980s to work in freight service and reclassified as BB 9600, with sound-proofed cabins and a unified control stand for the operator. All units have been removed from service, with one example kept on display at the Gare de Nîmes.[5]