The MLW RS-23 was a 1,000 hp (746 kW) diesel-electric locomotive built by Montreal Locomotive Works between August 1959 and September 1960. Production totaled 40 locomotives.
The largest fleet of these locomotives was operated by Canadian Pacific Railway, which classed them DRS-10c in that company's locomotive classification system.
Power type Diesel-electric
Builder Montreal Locomotive Works
Model RS-23
Build date August 1959 to September 1960
Total produced 57
AAR wheel arr. B-B
UIC classification Bo'Bo'
Gauge 4 ft 8 1?2 in (1,435 mm)
Prime mover ALCO 251D
Engine RPM range 1025 / 325
Engine type Four-stroke diesel
Generator DC generator
Traction motors 6 x GE 752 DC traction motors
Transmission Electric
Power output 1,000 hp (750 kW)
Locomotive brake Air, optional dynamic
Train brakes Air