The is a commuter

electric multiple unit An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a numbe ...

(EMU) train type operated by the

private railway A private railway is a railroad run by a private business entity (usually a corporation but not need be), as opposed to a railroad run by a public sector. Japan In Japan, , commonly simply ''private railway'', refers to a public transit railway o ...

operator

Seibu Railway is a conglomerate based in Tokorozawa, Saitama, Japan, with principal business areas in railways, tourism, and real estate. Seibu Railway's operations are concentrated in northwest Tokyo and Saitama Prefecture; the name "Seibu" is an abbrevi ...

in Japan since March 2017. a total of 13 ten-car trainsets have been built by

Kawasaki Heavy Industries (or simply Kawasaki) is a Japanese Public company, public multinational corporation manufacturer of motorcycles, engines, Heavy equipment (construction), heavy equipment, aerospace and Military, defense equipment, rolling stock and ships, headq ...

in Kobe from 2016, with the first trains entering service on 25 March 2017.

Design

The new 40000 series trains were built by

Kobe Kobe ( , ; officially , ) is the capital city of Hyōgo Prefecture Japan. With a population around 1.5 million, Kobe is Japan's seventh-largest city and the third-largest port city after Tokyo and Yokohama. It is located in Kansai region, whic ...

from January 2016, with deliveries scheduled to continue from fiscal 2016 to 2019. This is the first time that trains for Seibu Railway have been built by this manufacturer. The new trains are designed as an evolution of the 30000 series "Smile Train" concept, and are intended to be passenger-friendly.

Operations

The 40000 series trains operate on

Seibu Ikebukuro Line The is a railway line of the Japanese private railway operator Seibu Railway. It originates at Ikebukuro Station, a large railway junction in north-western Tokyo, extending to northwest suburbs as far as Tokorozawa, Saitama, and nominally ter ...

Seibu Shinjuku Line The is a Japanese railway line owned by the private railway operator Seibu Railway, connecting Seibu Shinjuku Station in Shinjuku, Tokyo with Hon-Kawagoe Station in Kawagoe, Saitama. The Shinjuku Line is one of two main lines of the Seibu Rail ...

, and

Seibu Haijima Line The is a railway line in Tokyo, Japan, operated by Seibu Railway. It acts as a branch line of the Seibu Shinjuku Line, with direct trains to Seibu-Shinjuku Station in Tokyo. Stations :O: stop : SE: : E: : HL: All trains on this line sto ...

services. Some trainsets operate on reserved-seat supplementary-fare ''

S-Train The S-Bahn is the name of hybrid urban- suburban rail systems serving a metropolitan region in German-speaking countries. Some of the larger S-Bahn systems provide service similar to rapid transit systems, while smaller ones often resemble co ...

'' services between the Seibu Ikebukuro Line and

Tokyo Metro Yurakucho Line Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 ...

on weekdays and between the

Seibu Chichibu Line The is a railway line in Saitama Prefecture, Japan, operated by Seibu Railway. It is an extension of the Seibu Ikebukuro Line, and connects Agano Station and Seibu-Chichibu Station. Stations All trains go via Agano Station to the Seibu Ike ...

and Minato Mirai Line (via the

Tokyo Metro Fukutoshin Line The , formally the , is a subway line operated by Tokyo Metro in west-central Tokyo and Wako, Saitama, Japan. The newest line in the Tokyo subway network, it opened in stages between 1994 and 2008. On average, the Fukutoshin line carries 362,654 ...

and

Tōkyū Tōyoko Line The is a major railway line connecting Tokyo (Shibuya) to Yokohama. The line is owned and operated by the private railway operator Tokyu Corporation. The name of the line, ''Tōyoko'' (東横), is a combination of the first characters of ''Tōky ...

) at weekends since 25 March 2017.

Formation

The 40000 series EMUs are ten-car sets formed as follows, with five motored ("M") cars and five non-powered trailer ("T") cars, and car 1 at the Hanno (i.e. northern) end. Cars 2, 5, and 8 each have one single-arm

pantograph A pantograph (, from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen. If a line dr ...

. Car 4 has a

universal access Apple Universal Access is a component of the macOS operating system that provides computing abilities to people with visual impairment, hearing impairment, or physical disability. Components Universal Access is a preference pane of the Sys ...

toilet.

40050 subseries

Due to the use of fixed longitudinal seating throughout, the 40050 subseries EMUs are slightly lighter and accommodate more passengers than the 40000 series trains. Cars 2, 5, and 8 each have one single-arm pantograph.

Interior

The trains' interiors use

LED lighting An LED lamp or LED light bulb is an electric light that produces light using light-emitting diodes (LEDs). LED lamps are significantly more energy-efficient than equivalent incandescent lamps and can be significantly more efficient than mos ...

, and pairs of LCD passenger information screens are provided both above the doorways and suspended form the ceilings. A "Partner zone" area is provided at the end of car 10 with perch seats and space for wheelchairs and large luggage. This area also has larger windows. "Plasmacluster" air-purification technology is used for the first time on Seibu Railway trains.

40000 series

Passenger accommodation consists primarily of rotating pairs of seats can be arranged in either longitudinal or transverse arrangements, known as "LONG/CROSS" seats. File:Seibu railway 40000 kei interior.jpg, The interior of a 40000 series set in March 2017 with seating in transverse configuration File:Seibu railway 40000 kei interior 3 seat.jpg, Three-person seating at the end of a car in March 2017 File:Seibu 40002 inside partner zone 20170405.jpg, The "Partner zone" standing area in car 10 in April 2017 File:Seibu 40000 toilet 20170405.jpg, The train toilet in April 2017 File:Seibu 40101 Hanno Station 20170325.jpg, "LONG/CROSS" label beside destination LED on the exterior of the train, showing that the seat is rotational

40050 series

Passenger accommodation consists of fixed longitudinal bench seating throughout. These seats are referred to as "LONG" seats. File:西武40000系50番台車内.jpg, Interior view File:扉間のロングシート（7人掛け）.jpg, 7-person bench seat File:車端部のロングシート（3人掛け）.jpg, 3-person seat

History

Seibu 40102 S-Train 2 Bushi Station 20170325

Details of the new trains were officially announced in August 2015. The first trainset, 40101, was delivered from the

factory in

to Seibu's Kotesashi Depot in September 2016. The first sets entered revenue service on S-Train services on 25 March 2017. From spring 2018, 40000 series trains are scheduled to be used on new limited-stop supplementary-fare commuter services operating from to on weekday evenings. Seibu-Series40000 40053

In 2019, Seibu announced plans to procure two new 40000 series trainsets. These sets, numbered 40151 and 40152, were built with fixed longitudinal bench seating throughout; in contrast, older sets feature rotating seats. Two additional sets with fixed longitudinal seating were announced in 2020 as part of the operator's investment plan for fiscal 2020, followed by another three for 2021.

Build histories

The manufacturers and delivery dates for the fleet are as shown below. ;Notes:

References

External links

Official news release

{{Seibu trainsets Electric multiple units of Japan 40000 series Train-related introductions in 2017 1500 V DC multiple units of Japan Kawasaki multiple units