Rheem-Ruud 51-27211-02 Blower Motor

The Rheem-Ruud 51-27211-02 Blower Motor is a high-performance direct drive motor engineered for precision airflow in compatible residential furnaces and air handlers. This 1/4 HP blower motor operates as a permanent split capacitor (PSC) motor, delivering 825 RPM across two selectable speeds to balance system static pressure with efficient air distribution. Built on a standard 48 Nema Frame size, the unit features an Open Air Over (OAO) enclosure tailored for high-demand indoor applications. The sleeve bearing design ensures smooth, quiet rotation, while the 1/2" x 3 5/16" flat-keyed shaft supports secure wheel mounting. Designed for 208-230V single-phase power, this motor draws 2.1 Amps and utilizes CCW rotation. The versatile shell-band/shell-screw mount allows for seamless integration into various HVAC blower assembly configurations, maintaining the integrity of the original OEM setup without complex modifications.

• OEM Compatibility: Specifically designed to replace Rheem-Ruud 51-27211-02 and ProTech motors in select HVAC models.
• Dual-Speed Logic: Supports multiple speed taps for optimized air delivery and seasonal adjustments.
• Reliable PSC Design: Features a high-efficiency permanent split capacitor configuration for lower operating costs.
• Flexible Mounting: Compatible with both shell-band and shell-screw mounting brackets for faster field installation.
• Thermal Protection: Engineered with internal protection to prevent overheating during high-static conditions.

What capacitor is required for this motor?
This motor typically requires a 10 MFD / 370V run capacitor (sold separately) to maintain proper torque and efficiency.

How do I confirm the rotation direction?
The rotational direction is Counterclockwise (CCW) when viewing the lead end of the motor, matching standard Rheem-Ruud blower wheel requirements.

Can I use this motor to replace a higher horsepower unit?
It is critical to match the 1/4 HP rating and 825 RPM specifications; under-sizing the motor will lead to premature failure due to excessive load.

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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.