The final 28 locomotives were built to this design, which was not given a separate class designation since it was mechanically and electrically identical; they were called class P5a (modified), P5am, and colloquially Modifieds.

It designed a 2-C-2 (4-6-4) box cab electric locomotive which used six 625 HP traction motors to give it a total of 3750 HP. This locomotive was designated Class P-5 and two prototypes (road numbers 4700 and 4799) were built in the railroad's Altoona, PA shops in 1931.

Jan 14, 2021 · After a collision killed the crew of a box-cab P5a, PRR had the remainder of the fleet built with a streamlined steeple-cab, designating them “P5a modified.”

PRR P5a ELECTRIC LOCOMOTIVE The Pennsylvania Railroad 's class P5 comprised 92 mixed-traffic electric locomotives constructed 1931–1935 by the PRR, Westinghouse and General Electric, with Westinghouse locomotive assembly at Baldwin.

The Pennsylvania Railroad's class P5 comprised 92 mixed-traffic electric locomotives constructed 1931–1935 by the PRR, Westinghouse and General Electric. Although the original intention was that they work many passenger trains, the success …

In addition to in-depth coverage of the development, testing and operation of the class P5, there is a pictorial study of PRR Electrics: > With multiple photos of all classes from the AA1 through R1 and equipment rosters by Roger L. Keyser, > Including LIRR and PRR electric locomotives by …

Jan 8, 2025 · Depicted here are two versions of the PRR's "P-5A" Class (2-C-2) electric locomotives rated at 3,750 horsepower. At the right is engine #4760, a P-5A built by General Electric in October of 1932 and retired in November of 1964.

Nov 6, 2014 · Two Pennsylvania Railroad P5a electrics roll northward with a freight at Halethorpe, Md., in the 1940s. Early P5a’s had box-cab carbodies; later versions with streamlined bodies, such as this pair, were known as “P5a modifieds.”

In October 1937 P5a # 4702 was rebuilt with motors in its trucks to become the only locomotive in subclass P5b. Each truck axle was given a 375 - horsepower ( 280 kW) motor, adding 1, 500 …

The PRR P5 was a 2-C-2 electric locomotive that was intended for mixed service. It was designed when it was found out that the O1 introduced in 1930 with its 2-B-2 wheel arrangement was not powerful enough to compete with the Pacific steam locomotives.