Trane MOT19009 ServiceFirst OEM motor is a replacement drive motor for selected Trane and American Standard HVAC equipment.  This compact 48 frame motor has an overall length of approximately 5.81 inches, a 0.5-inch shaft diameter, and an open-air-over enclosure with belly-band mounting for easy drop in installation.  It delivers 3/4 HP at an operating speed of 1040 RPM (often listed as 1200 RPM nominal) on single-phase 400/460 VAC, 3.8 A, 50/60 Hz power, using a 10.0 µF external run capacitor.  The motor is thermally protected (auto reset), built with Class F insulation for 40°C ambient operation, offers a single speed with clockwise/counterclockwise wiring capability, and is factory set for counter-clockwise rotation at the lead end to maintain correct airflow and system performance.
 
Compatible with Trane and ServiceFirst OEM units that specify MOT19009 or K55HXUPN-1264 in gas furnace, rooftop, and air handler assemblies.  It is used in forced air HVAC systems fired by natural gas or propane where this OEM motor is specified.  The motor itself is an electric drive component and does not carry gas.  Functionally, it drives indoor or condenser fans to move air across coils and heat exchangers, helping maintain factory airflow, efficiency, and long term reliability.

 Trane MOT19009 is a direct replacement for Trane MOT6438 motor.