| 521 series | |
|---|---|
 A JR West 521-0 series EMU first build train | |
| Manufacturer | |
| Replaced | |
| Constructed | 2006– |
| Entered service | November 2006 |
| Number built | 164 vehicles (82 sets) |
| Number in service | 160 vehicles (80 sets) (as of 1 April 2021[update]) |
| Formation | 2 cars per trainset |
| Fleet numbers |
|
| Operators | |
| Depots | Tsuruga, Kanazawa |
| Lines served | |
| Specifications | |
| Car body construction | Stainless steel |
| Car length | 20,100 mm (65 ft 11 in) |
| Width | 2,950 mm (9 ft 8 in) |
| Height | 3,630 mm (11 ft 11 in) |
| Floor height | 1,120 mm (3 ft 8 in) |
| Doors | 3 pairs per side |
| Maximum speed | 120 km/h (75 mph) |
| Traction system | Variable frequency (3-levelIGBT) |
| Power output | 230 kW (308 hp) per motor |
| Electric system(s) | 1,500 V DC /20 kV 60 Hz AC (overhead line) |
| Current collection | WPS28D single-armpantograph |
| Bogies | WDT59B (motored), WTR243C (trailer) |
| Braking system(s) | Electronically controlled pneumatic brakes withregenerative braking, snow-resistant brake |
| Safety system(s) | ATS-SW, ATS-P |
| Coupling system | Shibata type |
| Track gauge | 1,067 mm (3 ft 6 in) |
The521 series (521系,521-kei) is a dual-voltage AC/DC outer-suburbanelectric multiple unit (EMU) train type operated byWest Japan Railway Company (JR West), along withthird-sector railway operatorsHapi-Line Fukui (as of March 2024),[1]IR Ishikawa Railway, andAinokaze Toyama Railway on local services in the Fukui, Kanazawa, and Toyama areas.[2]
The 521 series was the first dual-voltage suburban EMU type to be built for JR West. The body of the first two batches was based on the223-5000 series suburban EMU design, with the same WMT102C 230 kW (308 hp) traction motors.[3] The sets are able to be used onwanmandriver-only operation services.[2]
As of 1 April 2021[update], JR West operates 50 two-car sets (E01-E05, G14-G15, G17, G20-G24, G28-G30, J01-J19, U01-U15), allocated to Kanazawa depot and Tsuruga depot. TheAinokaze Toyama Railway operates 22 two-car sets (AK01-AK22), and theIR Ishikawa Railway operates eight two-car sets (IR01-IR08).[4]
15 additional two-car sets were transferred toHapi-Line Fukui in March 2024 following JR West's forefeiture of the Hokuriku Main Line withinFukui Prefecture.[1]
Sets consist of one motored and one non-powered trailer car, and are formed as follows.[3][5]
| Designation | Mc | Tpc' |
|---|---|---|
| Numbering | KuMoHa 521 | KuHa 520 |
| Capacity (total/seated) | 129/48 | 129/40 |
| Weight | 43.2 t | 44.3 t |
The KuHa 520 cars are each fitted with one WPD28D single-arm pantograph.[5]
Seating is arranged as 2+2 abreast transverse flip-over seats. The KuHa 520 cars include a toilet.[5]
The first five sets, E01 to E05, were built byKawasaki Heavy Industries andKinki Sharyo, and were delivered to Fukui depot between September and October 2006. These entered revenue service from 30 November 2006. The fleet was reallocated to Tsuruga Depot from 1 June 2010.[6]
Ten more sets, G01 to G10, built by Kinki Sharyo, were delivered to Kanazawa depot between October 2009 and March 2010, entering revenue service from 13 March 2010.[6] A further five sets, G11 to G15, were delivered from Kawasaki Heavy Industries in December 2010 and January 2011.[6] 15 more sets, M01 to M15, were delivered from Kawasaki Heavy Industries to Tsuruga Depot between January and March 2011.[6]
Nineteen third-batch two-car sets (J01 to J19) were delivered to Tsuruga Depot in fiscal 2013.[5] The third-batch sets have cab ends based on the JR West225 series EMUs, with improved crash resistance, and useLED lighting for interior lighting.[7] These sets entered revenue service in spring 2014.[7]
In December 2019, the first three two-car 521-100 series sets (U01 to U03) for theNanao Line were built by Kinki Sharyo.[8] Unlike older JR West 521 series sets, the 521-100 series sets feature red waistline striping, reminiscent of the body colour used by older 413 and 415 series trains operated on the line.[9] By October 2020, a total of fifteen two-car sets were built for JR West.[10] Three more sets for the IR Ishikawa Railway (IR06 to IR08) were delivered on 3 December 2020.[11] The 521-100 series fleet entered service on the Nanao Line from 3 October 2020.[12]
Two more 521-0 series two-car sets (J22 and J23) were built by Kawasaki Heavy Industries and delivered to Kanazawa Depot in March 2021.[13]
16 two-car 521 series sets were transferred to thethird-sector railway operating companyAinokaze Toyama Railway for use from 14 March 2015 when JR West handed over ownership of the sections of theHokuriku Main Line inToyama Prefecture running parallel to the newHokuriku Shinkansen.[14] Likewise, three two-car sets were transferred to theIR Ishikawa Railway, which took over control of the section of the Hokuriku Main Line inIshikawa Prefecture from 14 March 2015.[15] Two more sets were newly built for the IR Ishikawa Railway.[15]
As of 1 October 2017[update], the Ainokaze Toyama Railway 521 series fleet is as follows.[4]
| Set No. | Former set No. | Manufacturer | Delivery date |
|---|---|---|---|
| AK01 | G06 | Kinki Sharyo | 27 October 2009 |
| AK02 | G07 | ||
| AK03 | G08 | 22 December 2009 | |
| AK04 | G09 | ||
| AK05 | G11 | 15 February 2010 | |
| AK06 | G12 | ||
| AK07 | G13 | 2 March 2010 | |
| AK08 | G15 | ||
| AK09 | G16 | Kawasaki Heavy Industries | 18 December 2010 |
| AK10 | G17 | ||
| AK11 | G18 | ||
| AK12 | G21 | 12 January 2011 | |
| AK13 | G23 | 26 January 2011 | |
| AK14 | G24 | ||
| AK15 | G31 | 24 February 2011 | |
| AK16 | G32 | ||
| AK17 | – | 12 December 2017 | |
| AK21 | – | 14 February 2023 | |
| AK22 | – |
Five new two-car 521-1000 series sets are scheduled to be introduced over a period of six years, with the first set delivered in December 2017.[16][needs update] These sets are based on the JR West 3rd-batch design, and are intended to replace the operator's ageing413 series EMUs.[16] On 22 June 2023, it was announced that some of the two-car sets would be lengthened to three cars each in the future after fiscal 2025 to increase transportation capacity on the Ainokaze Toyama Railway Line.[17]
Sets AK21 and AK22 were delivered in February 2023.[18]
15 more two-car 521 series sets were transferred to thethird-sector railway operating companyHapi-Line Fukui for use from 16 March 2024 when JR West handed over ownership of the sections of theHokuriku Main Line inFukui Prefecture running parallel to the extension of theHokuriku Shinkansen from Kanazawa to Tsuruga.[1]
As of 4 December 2020[update], the IR Ishikawa Railway 521 series fleet is as follows.[4][11]
| Set No. | Former set No. | Manufacturer | Delivery date | Livery accent colour |
|---|---|---|---|---|
| IR01 | G10 | Kinki Sharyo | 22 December 2009 | ■ Light green |
| IR02 | G14 | 2 March 2010 | ■ Purple | |
| IR03 | G30 | Kawasaki Heavy Industries | 15 February 2011 | ■ Indigo |
| IR04 | J20 | Kinki Sharyo | 6 February 2015 | ■ Ochre |
| IR05 | J21 | 6 February 2015 | ■ Maroon | |
| IR06 | – | 3 December 2020 | – | |
| IR07 | – | |||
| IR08 | – |
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