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TheCanadian National Class Z-1-a was a series of six electric locomotives built byGeneral Electric for theCanadian Northern Railway in 1917. They were used in service through theMount Royal Tunnel inMontreal until retirement in 1995, operating for 76 years, 7 months and 12 days.[1]
They were classified as aboxcab, model 0440-E-166-4-GE-228-A by General Electric, delivered new to theCanadian Northern Railway. They were very similar to 6 units built for theButte, Anaconda and Pacific Railway, as was the electrification system. Each unit weighed 174,000 lb (79,000 kg). They had a B+B wheel arrangement, a maximumcontinuous tractive effort of 19,600 lbf (87 kN), capable of operating at a maximum safe speed of 55 mph (89 km/h).[1]
They were given the following classification: Class: Z-1-a by the CNoR in 1919; CN continued to use the same classification after 1919. One unit, CN 6713, was retired in 1993 and was thencannibalized forspare parts to supply the remaining class Z-1-a locomotives.[1] Another, CN 6712, was donated to theTown of Mount Royal, and was stored at that city's municipal garage pending selection of a suitable display site. Such a site was never found; the unit was cannibalized and scrapped in 2011.
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Four locomotives were preserved.
