The EF64 0 series has appeared as a standard electric locomotive for graded lines based on the EF62 / EF63. It is equipped with dynamic braking that provides stable braking force on steep slopes, and the side filters are enlarged for that purpose. Unlike the primary type, which was in charge of driving both passengers, the secondary type is not equipped with electric heating equipment because it was manufactured for cargo, and it features an appearance without electric heating indicator lights and electric heating jumper plugs on the skirt. is. In addition to single-machine trains, freight trains were also towed by double-headed trains.