TCDD E52500 is a series of electric locomotives used by the Turkish State Railways, comprising 22 class 441-9 locomotives leased from Željeznice Federacije Bosne i Hercegovine in Bosnia-Herzegovina. They are used throughout the electrified parts of the Turkish rail network. The locomotives have a power output of 3,860 kW and are capable of 120, 140 or 160 km/h speed depending on the version. The locomotives were originally built from 1967 onwards for Yugoslav Railways by ASEA of Sweden and Končar in Croatia, then part of Yugoslavia. They were based on ASEA's Rb design for Swedish Railways.