| Baldwin DRS-4-4-1500 | |
| Powertype: | Diesel-electric |
| Builder: | Baldwin Locomotive Works |
| Buildmodel: | DRS-4-4-1500 |
| Builddate: | July 1947–May 1950 |
| Totalproduction: | 35 |
| Aarwheels: | B-B |
| Uicclass: | Bo′Bo′ |
| Length: | 57feet |
| Height: | 142NaN2 |
| Locoweight: | 120short ton |
| Primemover: | Baldwin 608SC |
| Enginetype: | Four-stroke diesel |
| Aspiration: | Turbocharged |
| Displacement: | 15832cuin |
| Alternator: | Westinghouse YG42A |
| Generator: | Westinghouse 471A |
| Tractionmotors: | Westinghouse 370F (4) |
| Cylindercount: | 8 |
| Cylindersize: | NaNx |
| Transmission: | Electric |
| Maxspeed: | 650NaN0 |
| Poweroutput: | 1500hp |
| Tractiveeffort: | 615102NaN2 |
| Locobrakes: | Straight air |
| Trainbrakes: | Air |
The Baldwin DRS-4-4-1500 was a diesel-electric locomotive of the road switcher type rated at 1500hp, that rode on two-axle trucks, having a B-B wheel arrangement. It was manufactured by Baldwin Locomotive Works from 1947 until it was replaced in 1950 by the 1600hp AS-16.
Nine railroads bought 35 locomotives, with five railroads later buying the successor model.
| Railroad | Quantity | Road numbers | Notes | |
|---|---|---|---|---|
| 6 | 1100–1105 | |||
| 1 | 200 | |||
| Iron Mines of Venezuela (Bethlehem Steel Company) | 3 | 1–3 | ||
| Minneapolis, St. Paul and Sault Ste. Marie Railroad ("Soo Line") | 8 | 360–367 | ||
| Missouri Pacific Railroad (St. Louis, Brownsville and Mexico Railway) | 4 | 4112–4115 | ||
| 2 | 7300–7301 | |||
| 2 | 175–176 | Renumbered 500–501 to Burlington Northern 405-406 | ||
| 6 | 6000–6005 | |||
| 3 | 170–172 | |||
| Total | 35 |