At the beginning of the 1980s, Renfe launched a tender to modernize its fleet of shunting locomotives. This initiative led to the creation of the Class 309, delivering 720 hp - twice the output of the veteran Class 303. Its modern design offered improved comfort, visibility, and ease of operation, quickly establishing it as an essential locomotive for shunting duties across Spain. The reproduced models of the Class 309 feature a wealth of fine detailing and high-quality construction: