| Russian locomotive class A | |
| Powertype: | Steam |
| Builder: | Kolomna Locomotive Works Hanomag Henschel & Son Sormovo Works Voroshilovgrad Locomotive Works Kharkov Locomotive Factory |
| Builddate: | 1892, 1894-1907 |
| Totalproduction: | 533 |
| Leadingdiameter: | 1030mm |
| Driverdiameter: | 1830mm |
| Length: | 10.437m (34.242feet) |
| Axleload: | NaNt |
| Emptyweight: | 58t |
| Serviceweight: | 60.3t 63.5t |
| Firearea: | 1.85m2 |
| Cylindercount: | Two, outside |
| Cylindersize: | NaNmm or NaNmm |
| Maxspeed: | 115km/h |
| Operator: | Russian Imperial Railways Soviet Railways |
The Russian locomotive class A was a series of Russian steam locomotives from the early 20th century, among the most powerful produced in the country at that time, with a top speed of 115 kilometers per hour.[1]
One example, shown here, was the Ab type, with a Schmidt superheater, with the number between the couplers indicates Ab 132, produced at the Briansk locomotive factory in 1909.[1]