Russian locomotive class A
Ab 132, which had been converted to a class B in 1912.
Type and origin Power type Steam Builder Kolomna Locomotive Works Hanomag Henschel & Son Sormovo Works Voroshilovgrad Locomotive Works Kharkov Locomotive Factory Build date 1892, 1894-1907 Total produced 533
Specifications Configuration: ​  • Whyte 4-6-0 Gauge 1,524 mm (5 ft) Leading dia. 1,030 mm (3 ft 5 in) Driver dia. 1,830 mm (6 ft 0 in) Length 10.437 m (34 ft 2.9 in) Axle load 13.8–14 t (13.6–13.8 long tons; 15.2–15.4 short tons) Empty weight 58 t (57 long tons; 64 short tons) Service weight 60.3 t (59.3 long tons; 66.5 short tons) 63.5 t (62.5 long tons; 70.0 short tons) Firebox: ​  • Grate area 1.85 m2 (2,870 sq in) Cylinders Two, outside Cylinder size 500 mm × 710 mm (20 in × 28 in) or 500 mm × 730 mm (20 in × 29 in)
Performance figures Maximum speed 115 km/h (71 mph)
Career Operators 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]