[citation needed] They were equipped with MT46B motors with 100 kW (130 hp) of power output.

[citation needed] This was the original version of the 415 series train, and was manufactured from 1971 to 1974, and had air-conditioners installed in 1977.

4") warning panels on the cab ends, these sets were repainted between 1986 and 1987 into a new livery of white with blue bodyside stripe, carried up until the present day.

[2] JR Kyushu set FM5 was re-painted in the old JNR livery in 2000 to commemorate the millennium celebrations in Japan.

[2] This subseries was introduced in 1978, and most of the trains are operated by JR Kyushu, although a few trainsets were operated by JR East on the Jōban Line (the latter were withdrawn in March 2007, again in favour of the E531 series trains).

The 415-100 series trainsets were built in the same exterior style as the 113-2000 series trains, but the seat pitch for transverse seating was increased from 1,420 mm to 1,490 mm, and toilets were fitted only in the KuHa 411-200 cars.

[2] The 415-500 sub-series was introduced from January 1982 on the Jōban Line, based at Katsuta Depot.

[2] After serving for more than a decade in service, the remaining cars in this subseries were retired following the timetable revision on 23 September 2022.