| MI 09 | |
|---|---|
_cropped.jpg) MI 09 trainset on the Nanterre viaduct | |
| In service | 2011–present |
| Manufacturer | Alstom and Bombardier |
| Family name | X'Trapolis |
| Constructed | 2010–2017 |
| Entered service | 5 December 2011 |
| Number in service | 140 trainsets (700 cars) |
| Formation | 5 cars per trainset |
| Operators | RATP, SNCF |
| Depots |
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| Lines served |   |
| Specifications | |
| Car body construction | Stainless steel |
| Car length | 22 m (72 ft 2 in) |
| Width | 2.9 m (9 ft 6 in) |
| Height | 4.32 m (14 ft 2 in) |
| Doors | 2 × 3 per car |
| Maximum speed | 120 km/h (75 mph) |
| Weight | 288,000 kg (634,931 lb) |
| Traction system | Alstom OniX CADIX IGBT–VVVF (liquid cooled) |
| Traction motors | 12 × 325 kW (436 hp) 4 ECA 2846 3-phase AC induction motor (550 V natural ventilation) |
| Power output | 3,900 kW (5,200 hp) |
| Acceleration | 1.1 m/s2 (3.6 ft/s2) |
| Deceleration |
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| HVAC | Refrigerated HVAC and in-train heater |
| Electric system(s) | |
| Current collector(s) | Pantograph (type AX 25) |
| UIC classification | 2′2′+Bo′Bo′+Bo′Bo′+Bo′Bo′+2′2′ |
| Braking system(s) | Disc, dynamic and regenerative Eddy current brake |
| Safety system(s) | SACEM |
| Coupling system | Scharfenberg type |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The MI 09 (French: Matériel d'Interconnexion de 2009, English: interconnection rolling stock of 2009) is a double-deck, dual-voltage electric multiple unit trainset that is operated on line A of the Réseau Express Régional (RER), a hybrid suburban commuter and rapid transit system serving Paris and its Île-de-France suburbs.
The 140 five-car trains were built by a consortium of French manufacturer Alstom and Canadian conglomerate Bombardier. The MI 09 is considered to be a part of Alstom's X'Trapolis Duplex platform and is an evolution of earlier the MI 2N series, which has been in use since 1998. The final assembly of the trains was performed at Alstom's Valenciennes factory and Bombardier's Crespin factory between 2010 and 2017. The first set was placed into regular passenger service on 5 December 2011.
The introduction of the MI 09 allowed for the MS 61 trains to be retired on 16 April 2016 and also allowed RATP to shift the MI 84 trains to the RER B by 24 February 2017.