Fasco 9638 Motor

The Fasco 9638 Motor is a high-performance 1/100 HP shaded pole motor designed for continuous duty in demanding HVAC and ventilation applications. As a legacy component, this 3.3-inch diameter motor is now superseded by the Fasco D540 direct replacement, ensuring seamless mechanical and electrical compatibility for field service technicians. Operating at 115V and a synchronized 1550 RPM, this single-speed unit features a totally enclosed air over (TEAO) enclosure to protect internal windings from airborne contaminants, making it ideal for exhaust fans and air handlers. The clockwise rotation (shaft end) and 1/4" x 2.3" flat shaft allow for precise blower wheel attachment, while the extended mounting studs provide versatile installation options. Built with Class B insulation and thermal protection, this sleeve bearing motor delivers reliable torque and quiet operation in high-cycle environments.

Key Benefits

• Direct Drop-in Replacement: Specifically engineered to replace the Fasco 9638 and D540 models without bracket modifications.
• Enhanced Protection: The TEAO design and thermal overload protection ensure long-term stability in restricted airflow conditions.
• Flexible Mounting: Features extended studs on both the shaft and lead ends for universal fitment in existing fan housings.
• Standard Electrical Specs: Runs on a standard 115V 60Hz circuit with a low 0.60 Amp draw for maximum efficiency.

Common Questions

Is the D540 a 100% compatible replacement for my old 9638 motor?
Yes, the Fasco D540 is the manufacturer-designated direct replacement for the 9638, matching all critical specs including 1550 RPM, 3.3-inch frame, and 1/100 HP output.

Can the mounting studs be modified if they are too long?
The extended mounting studs are designed to be cut to length during installation to fit specific HVAC blower assemblies.

What is the rotation of this motor?
This motor features a clockwise rotation when viewing the shaft end, making it compatible with standard right-hand blower wheels.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.