NRE 3GS21C

The NRE 3GS21C is a low-emissions diesel road switcher locomotive built by National Railway Equipment. It is powered by three Cummins QSK19C I6 engines with each one developing 700 horsepower (522 kW) and creating a total power output of 2,100 horsepower (1,570 kW). At least 27[1][2] 3GS21C genset locomotives have been produced to date at NREC's Mount Vernon shops in Southern Illinois.[3]

NRE 3GS21C
Type and origin Power type Diesel-electric Builder National Railway Equipment (NREC) Model 3GS21C Build date 2008 – Present Total produced 27
Specifications Gauge 4 ft 8 ^1⁄2 in (1,435 mm) Prime mover Cummins QSK19C (×3) Engine type Diesel engine Aspiration Turbocharger Cylinders 6 (×3)
Performance figures Power output 2,100 hp (1,570 kW)

Original buyers

Railroad	Quantity	Road numbers	Notes
BNSF Railway	16	1300-1316[4]	ex-GN and ex-ATSF EMD SD40, SD45 and SD45-2
Dallas, Garland & Northeastern Railroad	3	2000-2002[5]	ex-UP EMD SD24
Norfolk Southern	1	3850[6]	Built in 2008. Ex-Norfolk Southern 3188 EMD SD40[7]
Pacific Harbor Line	2	80-81[8]	The first 3GS21C built, in Jan. 2008[9]
Indiana Harbor Belt Railroad	4	2160-2163[10]	2012
CSX Transportation	1	1600[11]
Total

Flexibility

Because the engines are modular, flexibility is obtained:

• If one engine fails, the others can continue at reduced power.
• If a lower axle load is needed, one engine can be left off.
• When reduced power is needed, one or more of the engines can be turned off, saving fuel and wear and tear.
• The QSK19C engine is common to the four variants of the NRE 3GS21C engine.
• The QSK19C engines from Cummins is widely used for non-railway applications, and spare parts are readily available.[12]

See also

• NRE 3GS21B

References

1. Zmudzinski, Lester (August 1, 2011). "Photo: CSXT 1600". RailPictures.net.
2. "BNSF Locomotive Roster". The Diesel Shop.
3. "National Railway Equipment". Train Web.
4. Burlington Northern Santa Fe Roster information on BNSF - Motive Power. Revised: 11 Dec. 2016.
5. Dallas Garland & Northeastern Roster information on DGNO Present & Past Power. Revised: 6 Feb. 2016.
6. 3GS21CDB NS 3850 NS Norfolk Southern Roster Locomotive.
7. NREC 3GS21C NS 3188 Norfolk Southern.
8. Pacific Harbor Line Locomotives (past & present) Revised: 15 Nov. 2015.
9. PHL 3GS21C PHL 80 Pacific Harbor Line.
10. All Time - Indiana Harbor Belt Railroad Diesel Locomotive Roster NRE 3GS21C "gensets" Revised: Jan. 2013.
11. CSX Motive Power * * * Yard Power * * * Updated: 11 Dec. 2016
12. Cummins Marine (August 2002). "Bulletin 4000084: QSK19-M" (PDF). Archived from the original (PDF) on April 12, 2013.