St. Clair Tunnel 150 was one of six electric locomotives purchased new in 1907 to electrify the St. Clair Tunnel Company. Locomotives 1305-1309 were delivered in 1907 while 1310 was delivered in July 1908. They were rated at 750 hp with a starting tractive effort of 33,000 lbs. operating on 3300 volts AC. Length of the locomotive was just under 30 feet. Originally numbered 1310, 150 was renumbered 2660 in 1910, 9150 in 1923 and 150 in 1949. It was scrapped in April 1959 at Hamilton, Ontario.