Based on the earlier Tokyo Metro 05 series (13th batch) and Tokyo Metro 10000 series trains, the 15000 series trains have 500 mm (20 in) wider doors (1,800 mm (71 in) as opposed to 1,300 mm (51 in)) to speed up boarding and alighting at stations during rush-hour periods.

[2] [3] The 15000 series trains are used on Tokyo Metro Tozai Line inter-running services, to and from Mitaka on the JR East Chuo-Sobu Line in the west, Tōyō-Katsutadai on the Toyo Rapid Railway Line and Tsudanuma on the Chuo-Sobu Line in the east.

As of 1 April 2016[update], the fleet consists of 13 ten-car sets, numbered 51 to 63, and formed as shown below, with car 1 at the Nishi-Funabashi (west) end.

[1] The first set was delivered from Hitachi's Kudamatsu factory in February 2010.

[5] The first 15000 series sets entered revenue service on 7 May 2010.