A Seibu 10000 Series "New Red Arrow" (Courtesy of Sui-setz)

A 10000 Series in classic Red Arrow colors (Courtesy of Uraken.net)

Seibu 10000 Series

Operated on the Seibu Shinjuku and Ikebukuro Lines as the Chichibu, Musashi and Koedo limited expresses

In Service:
1993 - Present
Top Speed: 105km/h (Service)
Acceleration: 2.7km/h/s
Deceleration:
3.5km/h/s (Regular)
4.5km/h/s (Emergency)
Length: 20000mm
Width: 2878mm
Consist/Formation: 
4 motorized cars + 3 trailer cars (7 Series)
Electric System: 1500v DC through overhead wires
Number built: 84 cars

The 10000 Series is a limited express-type electric multiple unit designed by Seibu to replace the 5000 Series Red Arrow trains.

Commonly known as the "New Red Arrow," or NRA, the 10000 Series was introduced by Seibu to become its next generation of limited express.

To simplify maintenance, the first 11 formations utilized equipment also used on the earlier 101, New 501 and 5000 Series. These trains use rheostatic drive. The 12th formation uses a variable frequency drive similar to that used on the 20000 Series.

Late in 2011, formation 10105 was painted in the classic cream and red colors of the original 5000 Series.