A single survivor, prototype #4700, is at the National Museum of Transportation in St Louis, Missouri. They had an AAR wheel arrangement of 2-C-2, or 2′Co2′ in the UIC classification system — three pairs of driven wheels rigidly mounted to the locomotive, with a two-axle unpowered truck at each end.

Crammed into a protective shed at the National Museum of Transportation, this unique prototype electric unit deserves a spot in history. Massive face of the prototype P5 electric unit.

#4700 was built in 1931 as the prototype of the P-5 class electric locomotive. Originally designed for passenger service, the #4700 could attain a top speed of 95 mph. In 1939 it was re-geared to perform freight work, with a top speed of 70 mph. #2700 is …

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.

#4700 Pennsylvania Railroad. Built in 1931 by the Pennsylvania Railroad (PRR) Engine runs on 11,000 VAC at 25 Hz. Complete with all electrial internals. Class P5 3,750 hp continous. AAR 2-C-2. Donated in 1966 by Pennsylvania Railroad

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.

Prominent here is Pennsylvania Railroad engine #4700, a P-5 (2-C-2) built in Juniata as number "7898" in July of 1931, rated at 3,750 horsepower, renumbered "4700" in September of 1933, retired in April of 1965, and presently on display at the National Museum of Transportation in Kirkwood, Missouri.

Pennsylvania railroad mountain type #4700 rolls through Tidewater Point Rail on a fantrip excursion train with a Metro North P32 serving as a helper and the ...

The Pennsylvania Railroad's Juniata Shops in Altoona, PA, outshopped a single "Mountain" 4-8-2 locomotive in 1923. It was assigned road number 4700 (later is was renumbered 6699) and was designated Class M1. It was a common practice for the PRR to build a prototype that could be tested thoroughly before ordering more of a locomotive design.

#4700 Pennsylvania Railroad. Built in 1931 by the Pennsylvania Railroad (PRR) Engine runs on 11,000 VAC at 25 Hz. Complete with all electrial internals. Class P5 3,750 hp continous. AAR 2-C-2. Donated in 1966 by Pennsylvania Railroad