The E.636 are a group of 469 electric locomotives of the Italian State Railways. Designed in 1937-38 by engineer Alfredo D'Arbela and collaborators to replace the E.626, especially in hauling passenger and freight trains on the more tortuous lines of the FS network, coming close to the idea of a "universal locomotive" already advocated by Giuseppe Bianchi, they were judged "very modern for their time". They were withdrawn from service in 2006.






