#5418
NRE 3GS21B
🇺🇸 United States ·built by National Railway Equipment Company· from 2006· Type of low-emissions diesel switcher locomotive
3 photos from Wikimedia Commons · credits & licences
- 1. NRE 3GS21B UPY 2717 2: Morven· CC BY-SA 3.0
- 2. MBTA 3GS21B 3248 at South Station, December 2009: Thunderpenguin at English Wikipedia· CC BY 3.0
- 3. NRE 3GS21B UPY 2733: Morven· CC BY-SA 3.0
what is it?
The NRE 3GS21B is a low-emissions diesel genset locomotive built by National Railway Equipment (NRE). Instead of a single prime mover, the NRE genset locomotive is powered by three separate 700 horsepower (522 kW) Cummins QSK19C engines providing a total power output of 2,100 horsepower (1,570 kW). Each engine could be individually started or shut off depending on how much power is needed, reducing overall diesel emissions and improving fuel efficiency.
who runs it
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 20 years ago, in 2006.
- 1.6 MW is about 18 family cars (~85 kW each) flat out.
diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).
spec sheet
- built
- 2006
- number built
- 182
- kind
- Diesel-electric
- traction
- diesel
- origin
- 🇺🇸 United States
- builders
- National Railway Equipment Company
- operators
- NRE 3GS21B
- top speed
- —
- power
- 1.6 MW
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- Bo'Bo'
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q6955127, Wikipedia: NRE 3GS21B (CC BY-SA 4.0).Updated 2026-10-25.