The Fasco D133 is a professional-grade, 3.3-inch diameter shaded pole motor engineered for reliable performance in 115V fractional horsepower applications. This 1/20 HP unit is a common stock item for service contractors, designed as a direct replacement for OEM HVAC blower motors in various air-moving equipment including heaters, evaporators, and light-duty ventilation systems. With a 1500 RPM single-speed rating and 1.8 Full Load Amps, it offers the torque required for driving small blower wheels and axial fans without excessive power consumption. Built with technical durability in mind, the D133 Fasco motor features a CCWSE (Counter-Clockwise Shaft End) rotation and is housed in an Open Air Over (OAO) enclosure to ensure maximum heat dissipation during continuous operation. The 5/16-inch diameter flat shaft extends 2-1/4 inches, providing sufficient length for standard blower wheel hubs. For secure installation, the motor utilizes a thru-bolt mounting configuration with extended studs. The integration of internal thermal protection and Class B insulation allows for stable operation in ambient temperatures up to 40°C, making it a dependable choice for maintaining critical airflow in residential and light commercial units. Key Benefits: Universal HVAC Compatibility: Fits a wide range of fan and blower applications requiring a 3.3" frame and 1/20 HP output. Efficient Thermal Management: Open enclosure design and Class B insulation prevent winding failure under standard operating loads. Contractor-Friendly Installation: Includes extended studs and a 5/16" flat shaft for seamless alignment with existing blower assemblies. Reliable Bearings: Equipped with precision sleeve bearings for quiet, consistent rotation in horizontal or vertical orientations. Safety Integrated: Automatic reset thermal overload protector protects the motor from burnout during locked-rotor conditions. Common Questions: Can this motor replace a higher HP unit? No, you must match the horsepower and amperage. Installing a 1/20 HP motor where a higher rating is required will lead to overheating and premature failure. How do I confirm the rotation? The rotation is CCWSE (Counter-Clockwise when viewing the Lead/Shaft End). Compare this to your existing unit to ensure proper airflow direction. Is this suitable for outdoor condenser units? This is an Open Air Over motor designed for indoor or protected applications; it should not be exposed to direct moisture or heavy debris. 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.
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