Rheem-Ruud 51-42579-01 Motor

The Rheem-Ruud 51-42579-01 Blower Motor is a heavy-duty, industrial-grade solution designed for commercial HVAC systems and high-demand residential applications. This 1/2 HP three-phase motor operates on 208-230/460Vac, providing the flexibility needed for various electrical configurations on the job site. Engineered for belt drive blower assemblies, it features a standard 56 NEMA frame size and a 5/8" x 1 7/8" shaft for broad compatibility across Rheem, Ruud, and ProTech equipment lines. With a synchronous speed of 1725 RPM and a single-speed design, it ensures consistent static pressure and airflow. The ball bearing construction minimizes friction and heat buildup, extending the service life of the component in continuous-duty cycles. As a specialized OEM replacement motor, it supports reversible rotation, allowing technicians to field-configure the unit to match the specific requirements of the air handler or furnace. This motor is a direct drop-in for numerous models, including RJNA, RKNL, and RLNL series units.

• Multi-Voltage Versatility: Supports 208-230V and 460V three-phase power, reducing inventory needs for diverse sites.
• Industrial Durability: Equipped with dual ball bearings to handle the radial loads common in belt-driven HVAC applications.
• Standardized Fitment: Utilizes a 56 frame and platform mount for seamless integration into existing brackets.
• Configurable Rotation: Reversible rotation allows for easy adaptation to clock-wise or counter-clockwise blower wheels.

Is this motor compatible with single-phase residential power?
No, this is a three-phase blower motor and requires a 208-230V or 460V polyphase power supply. It will not operate on standard 115V or 230V single-phase residential circuits without a phase converter or VFD.

Can I use this for a direct-drive blower application?
This motor is specifically designed for belt drive systems. It is best suited for HVAC blower fan replacement where external pulleys are used to drive the fan assembly.

Does this motor include the capacitor?
As a three-phase induction motor, this unit does not require a start or run capacitor to operate, simplifying the electrical troubleshooting process.

This item is not eligible for free shipping.

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.