British Rail Classes 445 and 446

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British Rail Class 445 and 446
4-PEP-4002.jpg
4PEP unit No.4002 in the sidings at Wimbledon depot
In service1971-1980
ManufacturerBREL York
Family name1972 design (PEP)
Number built2 Class 445, 1 Class 446
Formation2/4 cars per trainset
Capacity280 (445)
136 (446)
Operator(s)British Rail
Specifications
Maximum speed75 mph (121 km/h)
Electric system(s)750V dc third rail
Track gaugeStandard

The PEP Stock were prototype electric multiple units used on British Rail's Southern Region during the early 1970s. They were forerunners of the BR Second Generation electric multiple unit fleet. Three units were built, one two-car unit (2001), and two four-car units (4001/4002). Under TOPS, they were allocated Classes 445 (4PEP) and 446 (2PEP).