PRR E3b

Pennsylvania Railroad E3b class

Type and origin Power type Electric Builder Baldwin-Lima-Hamilton Serial number 75482, 75483 Build date November 1951 Total produced 2

Specifications AAR wheel arr B-B-B UIC class Bo'Bo'Bo' Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Electric system(s) 11 kV, 25 Hz AC Current collection Pantograph (2 off) Traction motors Westinghouse 370 (6 off) Transmission AC current fed via a transformer tap changer through 12 Ignitron (Mercury arc) rectifier to DC traction motors.

Performance figures Power output 3,000 hp (2,200 kW)

Career Operators Pennsylvania Railroad Class E3b Numbers 4995, 4996 Scrapped 1964

Pennsylvania Railroad class E3b comprised a pair of experimental B-B-B (AAR) or Bo-Bo-Bo (UIC) electric locomotives. The bodywork and running gear was produced by Baldwin-Lima-Hamilton while the electrical equipment was provided by Westinghouse, who also acted as the main contractor.

In 1952 and 1953 the Pennsylvania Railroad took delivery of ten experimental locomotives, six from General Electric and four from Westinghouse. While GE's were all of the same class (E2b), the Westinghouse locomotives were split into two classes. Two locomotives had two three-axle trucks (E2c), while the other two had three two-axle trucks (E3b).

The locomotives were scrapped in 1964.