NS DM 90

From Wikipedia, the free encyclopedia
NS Class 3400 (DM'90)
An NS Class 3400 at Zutphen
Number built53
SuccessorStadler FLIRT units
Fleet numbers3401 - 3453 (Nederlandse Spoorwegen)
50-62 (Syntus)
Capacity12 first class
123 standard class
34 folding seats
Operator(s)Nederlandse Spoorwegen
Depot(s)Nedtrain Hengelo
Train length52.340 m (171 ft 8+58 in)
Width3.20 m (10 ft 6 in)
Height4.142 m (13 ft 7+18 in)
Maximum speed140 km/h (87 mph)
Weight95.2 t (93.7 long tons; 104.9 short tons)
Prime mover(s)2 x Cummins NTA 855 R4
Power output2 x 320 kW (430 hp) = 640 kW (860 hp)
TransmissionHydraulic (Voith T221 rzze)
UIC classification2'B' + B'2'
Braking system(s)<R> O-RA-Mg (D) (?)
Safety system(s)ATB-NG
Coupling systemScharfenberg
Track gauge1,435 mm (4 ft 8+12 in) standard gauge

The NS Class 3400 was a series of diesel multiple unit which were in service in the Netherlands between 1996 and 2017 and were built by Duewag, Talbot and SIG between 1996 and 1998. They were operated by the Nederlandse Spoorwegen and between 1999 until 2014 under lease by Syntus. The class is referred to as DM'90 meaning diesel rolling stock (Diesel Materieel in Dutch) of the 1990s or Buffel, which means Buffalo. The DM'90 series was developed alongside the short lived, electric SM'90 ("stopping-train" or commuter rolling stock of the 1990s) series with which it shares the unusual body cross section. Class 3400 were the last DMUs in service with NS, the older DE3 ("Plan U") and DH1/2 ("Wadloper") series having been replaced by the diesel electric Stadler GTW which are still in use with other operators in the Netherlands. Since January 2018, all units are now stored out of service and 32 units have been sold to SKPL - Polish private railway operator.[1]


In 1993, NS ordered 53 units of the class from Talbot, now Bombardier. The electrical systems, train controls, and diagnostic systems were delivered by Holec Ridderkerk, now Alstom. Duewag installed the interiors of the trains in Krefeld, after which the units were transferred to the Netherlands. Unit 3401 was delivered on March 12, 1996, and the last unit, 3453, was brought into service in 1998.

Originally there were intentions to order a follow-up series of the 2-car units, alongside the possible development of a single-car unit, however these were never realised due to the privatisation of many of the diesel-served lines.

The rolling stock was introduced in the end of the 1990s on a large portion of the non-electrified lines in the Netherlands. In the period thereafter many of these routes were transferred to private sector operators, Syntus and several other operators used the sets for their services, others were temporarily used on electrified sectors for local services.


Like the SM'90 ("Railhopper"), the DM'90 uses a non-standard width of 3.2 metres (10 ft 6 in), this was made possible by the distinctly bent side-walls which allowed the cars to be 30 centimetres (11+34 in) wider than conventional trains while being within the loading gauge. This allowed a 5 abreast seating arrangement, however the trains were eventually delivered with only the standard 4 abreast configuration.

Power is provided by two Cummins (NTA 855 R4) diesel motors, each delivering up to 320 kW (430 hp) of power to the Voith hydraulic transmission, driving the axles on the inner bogies. The bogies were Stork-manufactured RMO 9000 series, also used on the SM'90, and DD-IRM trains.[2] The top speed was 140 km/h (87 mph), reduced to 100 km/h (62 mph) when running in combination with the older (also diesel-hydraulic) Wadloper series trains.

The combination of disk brakes and quiet operation results that the trains were often poorly detected by axle counters which are commonly found on the lines where the DM'90 operates. Train-protection is provided by ATB-NG. For cross-border operations out of Heerlen, three sets were equipped with the German PZB train protection system along with boarding steps to accommodate the lower platform height.

Between 2008 and 2013, the sets operating between Zwolle and Kampen were provided with passenger information displays showing connection information in Zwolle, as tendered by the province of Overijssel.[3]

The trains were equipped with heating provided by both engine heat and, when necessary, additional electrical heaters. In depots, the heaters can be powered externally to avoid the need for operating the motors. Air conditioning is only present in the driver cab.

Specific operations[edit]

3403 and 3410 were branded for the Zwolle - Kampen service. 3401, 3402, 3404, 3412 and 3414 were branded for the Apeldoorn - Zutphen service.

Previous operations[edit]

Operations on these lines transferred from Syntus to Arriva since the start of the public transport timetable 2013.

Series Train Type Route Material Notes
17800 Sprinter Apeldoorn - Apeldoorn De Maten - Klarenbeek - Voorst-Empe - Zutphen Buffel (DM'90)
30700 Syntus stoptrein Arnhem - Arnhem Velperpoort - Duiven - Zevenaar - Didam - Wehl - Doetinchem De Huet - Doetinchem Buffel (DM'90) / Lint 41 Only weekdays until 19.00h
30900 Arnhem - Arnhem Velperpoort - Duiven - Zevenaar - Didam - Wehl - Doetinchem De Huet - Doetinchem - Gaanderen - Terborg - Varsseveld - Aalten - Winterswijk Buffel (DM '90) / Lint 41
31100 Arnhem - Elst - Zetten-Andelst - Hemmen-Dodewaard - Opheusden - Kesteren - Tiel Buffel (DM'90)
32300 Veolia stoptrein Nijmegen - Nijmegen Heyendaal - Mook-Molenhoek - Cuijk - Boxmeer - Vierlingsbeek - Venray (- Blerick - Venlo) Buffel (DM'90) / Velios Only during rush hour
20100 Stoptrein Hengelo - Oldenzaal - Bad Bentheim Buffel (DM'90)
7900 Zwolle - Heino - Raalte - Nijverdal - Wierden - Almelo - Almelo de Riet - Borne - Hengelo - Enschede Kennispark - Enschede
8500 Zwolle - Kampen


Series: Built: Quantity When New: Numbers When New: Still In Service: Out Of Service:
DM'90 1996–1998 53 3401 - 3453 None All

Syntus details[edit]

NS Number: Syntus Number: In service with Syntus since:
3450 50 30 May 1999
3451 51
3452 52
3453 53
3441 54 14 December 2003
3442 55
3440 56 18 January 2005
3438 57 1 April 2005
3439 58
3437 59 11 June 2007
3448 60 3 February 2009
3449 61
3436 - 18 December 2010
3447 2 September 2011
3446 23 September 2011
3435 1 October 2011
3445 28 October 2011
3422 4 November 2011
3444 3 December 2011



  1. ^ "Dozens of trains from the Netherlands will go to Poland. ..." AlKhaleej Today (in Arabic). 2020-12-02. Retrieved 2020-12-15.
  2. ^ "Stork-RMO bogies". 2014-10-18.
  3. ^ Stentor en NS stappen in uniek project Persbericht Stentor, 04-04-2008. (in Dutch)