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#3981

Seibu 401 series

🇯🇵 Japan ·built by Seibu Tokorozawa Railway Works· from 1968· electric multiple unit train type

Seibu 401 series, photo 1 of 3
1/3 まも· Public domain

what is it?

The Seibu 401 series (西武401系) is an electric multiple unit (EMU) train type operated by the private railway operator Seibu Railway on commuter services in the Tokyo area of Japan from 1978 to 1997.

who runs it

base stats

  • speed 100 km/htop speed
  • power 120 kWpower output
  • built 38made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

  • First built 58 years ago, in 1968.
  • 20 m long: about 4 cars parked nose to tail.
  • Still in service after 58 years.

multiple unit: A self-propelled train: motors are spread under the passenger cars, so no separate locomotive.

spec sheet

built
1968
in service from
1968
status
in service
number built
38
kind
multiple unit
traction
electric
origin
🇯🇵 Japan
builders
Seibu Tokorozawa Railway Works
operators
Seibu Railway, Sangi Railway, Jōshin Line, Ohmi Railway
top speed
100 km/h
power
120 kW
gauge
1,067 mm Cape gauge
electric system
1,500 V DC overhead catenary
formation
2 cars per trainset
length
20 m

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q11628856, Wikipedia: Seibu 401 series (CC BY-SA 4.0).Updated 2026-10-25.

stan runge 7f71e88 source