Tobu 100 series

The Tobu 100 series, branded Spacia, is a limited express electric multiple unit train type operated by the private railway operator Tobu Railway in Japan since 1990. The trains are used on Kegon, Spacia Nikko, Kinu, and Spacia Kinugawa services to Nikkō and Kinugawa-Onsen.

Formation

, the fleet consists of nine sets, based at Kasukabe Depot, and formed as follows.

Car No.	1	2	3	4	5	6
Designation	Mc2	M4	M3	M2	M1	Mc1
Numbering	100-6	100-5	100-4	100-3	100-2	100-1

Interior

Seat pitch is. Car 6 contains six 4-seat compartments. These are marked as "Green cars" when operating on JR lines.

History

The 100 series trains entered service on 1 June 1990 on Kegon and Kinu services from Asakusa in Tokyo to Nikkō and Kinugawa-Onsen, replacing the 1720 series trains operating since 1960. Two sets were delivered in fiscal 1989, two more were delivered in fiscal 1990, and five were delivered in fiscal 1991, bringing the fleet to nine sets.
All cars were made no-smoking from 18 March 1995.
On 11 November 2021, Tobu announced that the 100 series fleet would be replaced with new N100 series trains which entered service on 15 July 2023.

JR inter-running

Through-running Spacia Nikkō and Spacia Kinugawa services from Shinjuku in Tokyo to Tōbu Nikkō and Kinugawa-Onsen via the JR Tōhoku Main Line commenced on 18 March 2006, and three sets were modified with JR ATS-P for use on JR East lines.

Refurbishment

The fleet underwent a programme of refurbishment from December 2011, ahead of the opening of the Tokyo Skytree in May 2012. Three trains each were repainted into three different colour schemes, with "miyabi" purple, "iki" light blue, and "sunny coral orange", matching the Tokyo Skytree theme colours, and new "Spacia" logos. Internally, the seats feature new moquette, with blue in the open saloons and brown in the compartments. The first refurbished set re-entered service from 29 December 2011.

Set No.	Colour scheme	Date refurbished	Notes
101	"Deluxe Romance Car" maroon/beige	29 June 2012	Reliveried from "iki" blue in December 2021
102	"miyabi" purple	28 March 2012
103	"Nikko Moude Spacia" gold/black	2 March 2012	Reliveried from "sunny coral" orange in April 2015
104	"sunny coral" orange	28 September 2012
105	"miyabi" purple	28 December 2011
106	"Nikko Moude Spacia" gold/black	25 July 2012	Reliveried from "sunny coral" orange in July 2015
107	"miyabi" purple	31 May 2012
108	"iki" blue	27 April 2012
109	"Strawberry Spacia" pink/red	3 February 2012

Special liveries

Nikko Moude Spacia

Set 103 was repainted in a special gold and black livery and branded "Nikko Moude Spacia" from April 2015. This was followed in July 2015 by set 106, which was similarly reliveried.

Deluxe Romance Car

In December 2021, to commemorate the 30th anniversary of the introduction of the 100 series, set 101 was repainted in a maroon and beige livery inspired by that of the 1720 series sets they replaced.

Classic

Set 109 was repainted in the original 100 series livery from June 2021.

Strawberry Spacia

Set 109 returned to service on 24 December 2023 in a pink and red "Strawberry Spacia" livery to commemorate the 150th anniversary of the founding of Tochigi Prefecture.