1963年,西班牙国铁利用特轻型高速旅客列车来提高旅客运输的吸引力。为此,在1963/1964年向西德 Krauss—Maffei 公司购置了第一批10台 ML2400B’B’型机车。1968/1969年继续购置第二批5台 ML3000B’B’型机车。最后,在1981/1982年又购置了8台 ML4000B’B’型机车。对于这第三批机车,保留从维修方面说来很重要的部件,并使机车适应于提高客运 In 1963, the Spanish state railways used extra-light high-speed passenger trains to increase passenger transport appeal. To this end, the first 10 ML2400B’B ’locomotives were purchased from Krauss-Maffei in West Germany in 1963/64. The second batch of five ML3000B’B ’locomotives was purchased in 1968/1969. Finally, eight more ML4000B’B ’locomotives were purchased in 1981/82. For this third batch of locomotives, the parts that are important in terms of maintenance are retained and the locomotives are adapted to enhance passenger transport