What is the operating temperature of the Air Vent gable-mount WCGB power fan motor? �

This will vary with the attic temperature.

This will vary with the attic temperature. There is a thermal cutoff installed internally to prevent the motor from overheating. The motor locked rotor temperature is around 240 degrees F. The thermal cutoff trips at 266 degrees F. Air Vent has not recorded the running temperature due to it not being a concern so long as it is lower than the thermal cutoff and locked rotor temp.