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Pennsylvania Railroad E2b
Type and origin
Power type Electric
Builder General Electric
Build date 1952
Total produced 6
AAR wheel arr. B-B
UIC classification Bo'Bo'
Gauge 4 ft 8 12 in (1,435 mm)
Electric system(s) 11 kV, 25 Hz AC
Current collection
Transmission AC current fed via transformer tap changers to AC traction motors.
Performance figures
Power output 2,500 hp (1,900 kW)
Tractive effort 35,400 lbf (157 kN)
Operator(s) Pennsylvania Railroad
Class E2b
Number(s) 4939–4944
Scrapped 1964

Pennsylvania Railroad class E2b comprised six experimental B-B electric locomotives built for the railroad by General Electric.

In 1952 the Pennsylvania Railroad took delivery of eight experimental locomotives, four from Westinghouse and four from General Electric. GE also built two demonstrators to show the Great Northern Railway. These two were sold to the PRR in March 1953 and numbered 4943–4944.

They were commonly used in three pairs. Like most previous PRR electric locomotives, they were straight AC-powered, and did not use rectifiers. Because of this, they could work in multiple with existing PRR locomotives, and generally did so with class P5a.

The locomotives were scrapped in 1964.


  • Staufer, Alvin (1962). Pennsy Power. Staufer. pp. 300–301. LCCN 62020878. 
  • Volkmer, William D. (1991). Pennsy Electric Years. Edison, NJ: Morning Sun Books, Inc. pp. 30, 126. ISBN 1-878887-01-7. LCCN 90063156.