Japanese single-car DC electric multiple unit train type
| 125 series |
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 Kakogawa Line KuMoHa 125-10 in January 2019 |
| Manufacturer | Kawasaki Heavy Industries |
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| Built at | Hyogo |
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| Replaced | KiHa 40, KiHa 47, KiHa 58 |
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| Constructed | 2002–2006 |
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| Entered service | 15 March 2003 |
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| Number built | 18 cars |
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| Number in service | 18 cars |
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| Formation | Single car unit |
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| Fleet numbers | F1–8, F13–18, N1–4 |
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| Capacity | 117 |
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| Operators | JR-West |
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| Depots | Tsuruga, Aboshi |
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| Lines served | Obama Line, Maizuru Line, Kakogawa Line |
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| Car body construction | Stainless steel |
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| Car length | 20,340 mm (66 ft 9 in) |
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| Width | 2,950 mm (9 ft 8 in) |
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| Height | 4,095 mm (13 ft 5.2 in) |
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| Doors | 2 pairs per side |
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| Maximum speed | 120 km/h (75 mph) |
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| Traction system | Variable frequency (2-level IGBT) |
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| Power output | 440 kW (590 hp) |
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| Electric system(s) | 1,500 V DC (overhead line) |
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| Current collector(s) | WPS28A single-arm pantograph |
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| Bogies | WDT59A (motored), WTR243B (trailer) |
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| Safety system(s) | ATS-P |
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| Track gauge | 1,067 mm (3 ft 6 in) |
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The 125 series (125系, 125-kei) is a single-car DC electric multiple unit (EMU) train type operated by West Japan Railway Company (JR-West) on local services in Japan since March 2003.[1]
Design
The 125 series design is based on the 223-2000 series EMU design, with stainless bodies and steel front ends.[1]
The cars have two pairs of sliding doors on each side, with provision for a third set of doors in the centre.[1]
The second-batch cars (KuMoHa 125-9–12) delivered in 2003 differ from the earlier batch by having enlarged front-end skirts and darker grey tinted windows.[1]
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125 series first-batch car, June 2004
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125 series first-batch (left) and third-batch (right) cars coupled together, showing the difference in front-end skirt lengths and window tint
Operations
The 125 series is used on wanman driver-only operation services, primarily on the Obama Line and Kakogawa Line.[1]
Up to five single cars can be operated together as a multiple car set.[1]
Interior
Passenger accommodation consists of longitudinal bench seating at the ends, and 2+2 abreast transverse reversible seating in the centre of the cars.[1] The first two batches of cars (KuMoHa 125-1–12) were delivered with 1+2 abreast seating, but this was increased to 2+2 seating during 2003 and 2004.[2]
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General view of interior (KuMoHa 125-16, April 2008)
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Reversible seating (KuMoHa 125-16, April 2008)
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Priority seating (KuMoHa 125-16, April 2008)
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Doorway and toilet (KuMoHa 125-16, April 2008)
History
The first eight cars (KuMoHa 125-1–8) were built by Kawasaki Heavy Industries in December 2002 for entry into service from 15 March 2003 on the then-newly electrified 84.3-kilometre (52.4 mi) Obama Line between Tsuruga and Higashi-Maizuru.[2] These sets were initially allocated to Fukuchiyama Depot, but were subsequently transferred to Tsuruga Depot.[1]
Four more cars (KuMoHa 125-9–12) were built in September 2004 for entry into service from 19 December 2004 on the newly electrified 48.5 km (30.1 mi) Kakogawa Line between Kakogawa and Tanikawa.[2]
A further six cars (KuMoHa 125-13–18) were built in September 2006 to coincide with the conversion of Tsuruga area services from 20 kV AC to 1,500 V DC electrification from 21 October 2006.[1][2]
From the start of the revised timetable on 18 March 2023, 125 series trainsets began operation on the Maizuru Line.[3]
