The Renfe Class 251 is a class of electric locomotives operated by Renfe in Spain.

They are aesthetically and conceptually based on the JNR Class EF66 operated in Japan, but they have many differences in mechanical design and power output, as well as manufacturers.

[1] The locomotives have a B-B-B wheel arrangement,[2] and are equipped with monomotor bogies, which have switchable gear ratios.

[1] Their maximum axle load is 23 tonnes.

[3] Media related to Renfe Class 251 at Wikimedia Commons This electric locomotive-related article is a stub.