BB 1500 were a series of forty electric locomotives from the Chemins de fer du Midi, operating under direct current at a voltage of 1.5 kV.
The locomotives of this first generation of BB Midi were delivered between 1926 and 1928 and were intended for hauling freight trains. Between the end of the Second World War and the 1950s, though robust, their power was considered insufficient and their reliability too poor for main line work. As a consequence they were reclassified as shunting locomotives and were active in around fifteen SNCF depots. The class was withdrawn from 1970 to 1979.
