what is it?
The GMD SW1200MG is a 4-axle electric locomotive built by General Motors Diesel between 1963 and 1971. The locomotive is the electric version of the diesel powered SW1200, with the prime mover replaced by a motor-generator set, hence the MG suffix in the model number. Locomotives run under 2400V 60 Hz, in automatic control without driver.
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 63 years ago, in 1963.
electric locomotive: Draws power from overhead wires or a third rail and pulls separate carriages.
spec sheet
- built
- 1963–1971
- status
- in service
- number built
- 9
- kind
- Electric
- traction
- electric
- origin
- 🇨🇦 Canada
- builders
- General Motors Diesel
- operators
- Iron Ore Company of Canada
- top speed
- —
- power
- —
- electric system
- 2400 V AC 60 Hz catenary
- wheel arrangement
- Bo′Bo′
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q5513762, Wikipedia: GMD SW1200MG (CC BY-SA 4.0).Updated 2026-10-25.