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New Jersey Transit 6662-1.JPG
NJT ALP-46 4600 in Summit, New Jersey.
Type and origin
Power typeElectric
Build date2001 – 2002*,[1] 2009 –2011†[2][3]
Total produced29* + 36†[1][2][3]
 • UICBo'Bo'
Gauge4 ft 8 12 in (1,435 mm) standard gauge
Length64 ft (19.51 m)
Width9 ft 8 in (2.95 m)
Axle load46: 49,600 lb (22,500 kg)
46A: 50,706 lb (23,000 kg)
Loco weight46: 198,400 lb (90,000 kg)
46A: 202,822 lb (91,999 kg)
Electric system/s12.5 kV 25 Hz AC Catenary
12.5 kV 60 Hz AC Catenary
25 kV 60 Hz AC Catenary
Current pickup(s)pantograph
Head end power480 V AC, 60 Hz, 3 phase, 1,000 kW*†
Performance figures
Maximum speed46: 160 km/h (99 mph)
46A: 200 km/h (124 mph)
Power outputat rail 46: 7,108 hp (5,300 kW)
at rail 46A: 7,500 hp (5,600 kW)
Tractive effort46, starting:
316 kN (71,000 lbf), continuous:
245 kN (55,000 lbf)
at 50 mph (80 km/h)[4]
46A : starting :
~316 kN (71,000 lbf), continuous:
~ 240 kN (54,000 lbf)
at 85 km/h (53 mph)[5]
Brakeforcedynamic 150 kN (34,000 lbf)
OperatorsNJ Transit
NumbersNJT 4600 – 4628 (46)[citation needed]
NJT 4629 – 4664 (46A)[citation needed]
Sources: * ALP-46.[6] † ALP46A.[7] except where noted

The ALP-46 is an electric locomotive built in Germany by Bombardier between 2001 and 2002 for use in the United States. It is derived from the German Class 101. New Jersey Transit (NJT) is the only railroad to operate this locomotive model. They are used across the electrified NJT system. These locomotives replaced the ALP-44 locomotives, which were all retired by 2012.

Orders and delivery[edit]

NJT ordered 29 locomotives: the first 24 ALP-46 locomotives in December 1999[citation needed] and an additional five locomotives in September 2001.[citation needed]

They were built by Bombardier (formerly ADtranz) at their Kassel, Germany plant. The first two locomotives were built as preseries locomotives for testing—4600 was tested on the TTCI test plant in Pueblo, Colorado, 4601 was sent to Kearny for testing on the NJT network. All locomotives were transported via road to the port of Bremen and shipped on Roro-ships of Wallenius Wilhelmsen Logistics to Port Elizabeth (NJ).

In February 2008, NJT ordered twenty-seven 125 mph (201 km/h) top speed ALP-46A locomotives from Bombardier, which were to haul Bombardier MultiLevel Coaches. The estimated value of the order was €155 million (approximately $230 million).[2] In June 2009, NJT took up an option for a further nine locomotives, and spare parts, at a cost of $72 million.[3]

On November 12, 2009, Bombardier ceremonially handed over the first two completed ALP-46As to New Jersey Transit over at their Kassel plant in Germany.[8]

They arrived on NJT property on December 13. Locomotive 4629 was shipped by rail to a testing facility in Pueblo, Colorado, while 4630 was placed on the rails at the Meadows Maintenance Complex in Kearny for testing on property and maintenance training.[citation needed]

As of April 5, 2011, all locomotives have been delivered. As of May 7, 2011, all locomotives have entered regular revenue service.[citation needed]

Future North American Clients[edit]

Commuter rail operator GO Transit is considering the use of the ALP-46 for some or all of the operator's current lines. GO Transit has performed a study on electrification of their current diesel operations.[9]

Variants, operations[edit]

Both the ALP-46 and ALP-46A have been used to haul NJ Transit's Comet IIM, IV, V, and Multilevel fleet.[10] The ALP-46 was also used to pull Amfleet consists on Amtrak's Clocker service in its final days of operation.[11]


The ALP-46 locomotives produce 7,100 hp (5,300 kW) and are powered by overhead catenary. They can reach a top speed of 100 mph (161 km/h).[1]

The ALP-46 is derived from the DBAG Class 101 locomotive, of which the operating speed is 220 km/h (137 mph).

The locomotives use Bombardier's MITRAC 3000 electric propulsion system. The system consists of a polyol-ester cooled transformer to reduce the catenary voltage which feeds two polyol-ester cooled GTO based traction converters (Bombardier MITRAC TC 3100 series). Each traction converter feeds the motors (Bombardier MITRAC DR 3000 series) of one truck.[citation needed]


The ALP-46A locomotives use Bombardier's MITRAC 3000 electric propulsion system.[12] The traction converters (Bombardier MITRAC TC 3360 series) are from a newer generation based on IGBT technology. The converters are water cooled and have individual inverters for each traction motor (Bombardier MITRAC DR 3000 series).[citation needed] Power at rail is increased to 7,500 hp (5,600 kW) and top speed is increased to 125 miles per hour (201 km/h),[7] though NJ Transit limits them to 100.


See also[edit]

Bombardier ALP-46(A)


  1. ^ a b c ALP-46 Electric Locomotive - USA, Bombardier, archived from the original on 2008-11-22, retrieved 2008-09-01
  2. ^ a b c Bombardier To Supply New Locomotives For NJ Transit, Bombardier, 22 February 2008
  4. ^ APPENDIX 7 : Locomotives Comparison of Technical Data (PDF)
  5. ^ Eisenbahn-Revue (11): 562, 2009, ISSN 1421-2811
  6. ^ † ALP-46A."New power and a new look for New jersey transit - Transit Update", Railway Age, December 2001
  7. ^ a b New Jersey - Passenger - Electric Locomotive Class ALP-46A (PDF), Bombardier Transportation
  8. ^ "Bombardier hands over first ALP-46A",, 13 November 2009
  9. ^
  10. ^ "NJT HD: Four And A Half Windy Hours At Princeton Junction Station (New Jersey Transit + Amtrak)", An assortment of ALP-46s and ALP-46As hauling Comet cars and Multilevels
  11. ^ "Last Amtrak Clockers October 28, 2005", ALP-46 4610 Hauling one of the last Amtrak Clockers
  12. ^ MITRAC 3000 (references), Bombardier, archived from the original on 7 March 2011, retrieved 1 October 2017


  • Schwendt, L. (2001). "New electric high speed locomotives with three phase drive systems for the US market". Proceedings of the 2001 IEEE/ASME Joint Railroad Conference (Cat. No.01CH37235). pp. 53–70. doi:10.1109/RRCON.2001.921751. ISBN 0-7803-7085-6.

External links[edit]