The SNCFClass BB 17000B-B was a class of AC electric locomotives built between 1965 and 1968. The class was used for suburban duties on railway lines around Paris,[1] notably powering VB2N push-pull sets. They were monophase locomotives (running off 25 kV ACoverhead supply) and had the nickname "danseuses" or "dancers". By 2020 the 105-strong class of locomotives had all been withdrawn.[2]
After spending a varied first part of their careers hauling different types of train, the locomotives were regrouped for use on the Parisian "trains de la banlieue" or suburban trains. They were all owned and operated by Transilien.