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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 in the blue and white livery of Transilien, the brand name for the SNCF network around Paris, these locomotives are the passenger equivalent of the freight-only SNCF Class BB 27000 and are equipped for push-pull operation on suburban passenger services in the Île-de-France region around Paris, working with refurbished VB2N double-deck carriages.