Sets are formed as six-car sets, consisting of four motored cars and two trailers, as shown below.
Cars 3 and 5 are equipped with PS33D single-arm pantographs (two on car 5).
Retracting gangway connections on the end cars allow two sets to be coupled together to form 12-car formations. Electrical and safety equipment is duplicated, as on the E233 series commuter trains, to improve safety and reliability. Active suspension on end cars and yaw dampers between all cars for improved ride comfort.