SNCF Class BB 27300 the number carried on the locomotive is prefixed with the number 8, to denote the unit as belonging to the Île-de-France division of SNCF. The first locomotives entered service in 2006 on suburban trains from Paris Montparnasse railway station. Current deployment sees a total of 25 locomotives operating services from Paris-Montparnasse on trains to Dreux, Mantes-la-Jolie and Rambouillet. At Montparnasse they have displaced older SNCF Class BB 8500 and BB 25500 locomotives. A further 42 locomotives operate from Paris Saint-Lazare railway station on trains to Poissy, Mantes-la-Jolie, Pontoise, Gisors, and Ermont Eaubonne. At Saint-Lazare BB 8500 and BB 17000 locomotives
SNCF Class BB 27300 have been displaced. The usage of BB 27300 locomotives on suburban passenger services is a temporary measure. It is expected that sometime after 2015 they will begin to be replaced by new Electric Multiple Units. When this happens, the locomotives are likely to find further use with SNCF's freight subsidiary, SNCF Fret, where they will join the technically similar BB 27000 locomotives. SNCF Class BB 27300 The SNCF Class BB 27300 is an electric locomotive. There are 67 BB 27300 locomotives, built as part of the Prima range by Alstom. The first BB 27300 were delivered starting in 2006. Painted