The last 100-ton unit was produced in 1930 on stock and sold in 1935 to the Belt Railway of Chicago, where it was given the road number 301.

[5] All models have chassis and running gear, generator, traction motors and controls from GE, and Ingersoll Rand provided its 10 × 12 diesel engine.

[6] The principle of operation was the same as modern locomotives,[7] the diesel engine driving a main generator of 600 volts DC with four axle-hung traction motors.

At each locomotive end a GE Model CD65 motor with a Sturtevant multivane fan[9] was pressing air through the radiators.

Two models were in series production and two versions were only produced once: The only surviving GE boxcab is the 100-ton unit built in December 1929 and delivered to the contractor Foley Brothers in January 1930.