Southeast Railroad (SOB) class 446. With built-in DELTA module. 2 axles powered. 4 traction tires. Electronic reverse unit. Length over buffers 18.1 cm (7-1/8").
In 1978 the Swiss Federal Railways (SBB) ordered four prototypes of a general purpose electric road engine. These units had a continuous power rating of 4,475 kilowatts (approx. 6,000 horsepower), a maximum speed of 160 km/h (100 mph) and were designated the Re 4/4IV. The ends of the body were developed in a wind tunnel and, along with the windowless, ribbed side walls, dominate the appearance of the locomotive. Originally, the side walls for all four units were a different color. Since 1994 the Southeast Railroad (SOB) had gradually acquired these locomotives from the SBB. The route network for this privately owned railroad lies in the scenically attractive region between Lake Zuger and Lake Zürich. These locomotives were intended for immediate use on the steep grades of this route.
