811 series
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| 811 series | |
|---|---|
An 811-0 series set in June 2019 | |
| Manufacturer | Hitachi, Kinki Sharyo, JR Kyushu |
| Replaced | 421 series |
| Constructed | 1989–1993 |
| Entered service | 21 July 1989 |
| Refurbished | 2017– |
| Number built | 112 vehicles (28 sets) |
| Number in service | 108 vehicles (27 sets) |
| Number scrapped | 4 vehicles (set PM2, accident damage) |
| Formation | 4 cars per trainset |
| Operators | JR Kyushu |
| Depots | Minami-Fukuoka |
| Lines served | Kagoshima Main Line, Nagasaki Main Line, Nippo Main Line |
| Specifications | |
| Car body construction | Stainless steel |
| Car length | 20,000 mm (65 ft 7 in) |
| Width | 2,950 mm (9 ft 8 in) |
| Height | 3,670 mm (12 ft 0 in) |
| Doors | 3 pairs per side |
| Maximum speed | 120 km/h (75 mph) |
| Traction system | Thyristor drive Variable frequency (IGBT/SiC Hybrid module) (811-1500 series) |
| Traction motors | 811-0/100 series: MT61QA 811-1500 series MT405K |
| Electric system(s) | 20 kV AC 60 Hz |
| Current collection | Overhead catenary |
| Multiple working | 813/815/817/821 series |
| Track gauge | 1,067 mm (3 ft 6 in) |
The 811 series (811系) is an AC electric multiple unit (EMU) train type operated on local services by Kyushu Railway Company (JR Kyushu) in Japan since 1989.[1]
- 811-0 series: 16 x 4-car sets (PM1–17)
- 811-100 series: 11 x 4-car sets (PM101–111)
- 811-1500 series: Refurbished 4-car sets (PM15xx)
Design
The trains were built jointly by Hitachi, Kinki Sharyo, and JR Kyushu (Kokura factory).[2]
Operations
811 series trains are used on "Local" (all-stations) and "Rapid" (limited-stop) services on the following lines.[3]
Formations
As of 1 October 2017[update], the fleet consists of 108 vehicles, formed as 27 four-car sets.[4]
811-0 series
The four-car 811-0 series sets (sets PM1 to PM17) are formed as follows.[4]
| Designation | M'c | M | T | Tc' |
|---|---|---|---|---|
| Numbering | KuMoHa 810 | MoHa 811 | SaHa 811 | KuHa 810 |
| Capacity (Seated/total) | 48/124 | 56/133 | 44/123 | |
The KuMoHa 810 car is fitted with one PS101Q lozenge-type pantograph. The KuHa 810 car has a toilet.[4]
811-100 series

The four-car 811-100 series sets (sets PM101 to PM111) are formed as follows.[4]
| Designation | M'c | M | T | Tc' |
|---|---|---|---|---|
| Numbering | KuMoHa 810-1xx | MoHa 811-1xx | SaHa 811-1xx | KuHa 810-1xx |
| Capacity (Seated/total) | 48/133 | 56/141 | 44/131 | |
The KuMoHa 810 car is fitted with one PS101Q lozenge-type pantograph. The KuHa 810 car has a toilet.[4] Sets PM105 and PM106 have SaHa 811-200 cars instead of SaHa 811-100 cars. These also have a toilet.[4]
811-1500 series

The four-car 811-1500 series sets (sets PM15xx) refurbished from former 811-0 series sets are formed as follows.[4]
| Designation | M'c | M | T | Tc' |
|---|---|---|---|---|
| Numbering | KuMoHa 810-15xx | MoHa 811-15xx | SaHa 811-15xx | KuHa 810-15xx |
The KuMoHa 810 car is fitted with one single-arm pantograph. The KuHa 810 car has a toilet.[4]
Interior
The 811-100 series sets have fixed transverse seats in the vicinity of the doorways rather than the flip-over seats of the 811-0 series sets.[4]
- The interior of 811-0 series set PM11 in November 2008
- The interior of 811-100 series car KuHa 810-106 of set PM106 in November 2006
- The interior of refurbished 811-1500 series car MoHa 811-1504 of set PM1504 in September 2017
