Rheem-Ruud 51-42537-01 Motor

The Rheem-Ruud 51-42537-01 Motor is a high-capacity 3HP Three Phase blower motor engineered for heavy-duty commercial and industrial air handling systems. Designed to operate at 208-230/460Vac, this persistent 1725 RPM unit provides steady airflow in demanding rooftop and ductwork applications. Built with a 56HZ NEMA frame and durable ball bearings, this OEM replacement motor ensures mechanical stability and long-term service life. The motor features a 7/8" x 2 1/4" keyed shaft and a versatile platform mount, allowing for straightforward integration into existing blower assemblies. With support for reversible rotation, technicians can field-configure the lead connections to match the specific directional requirements of the blower wheel. This single-speed induction motor is the primary HVAC replacement motor for several large-tonnage Rheem and Ruud units, maintaining system efficiency by meeting precise factory amperage draws of 9.2-4.6 Amps.

• Multi-Voltage Versatility: Dual-rated for 208-230V and 460V configurations to suit varying site power requirements.
• Robust Construction: Industrial-grade ball bearings and a 56HZ NEMA frame provide the rigidity needed for continuous operation.
• Flexible Installation: Reversible rotation and a standard 7/8-inch shaft simplify field retrofits and OEM swaps.
• High Torque Output: The 3-horsepower rating delivers consistent static pressure performance in high-tonnage package units.

Is this motor compatible with single-phase power?
No, this is a three-phase motor specifically designed for commercial power systems and will not function on standard residential single-phase electricity.

What models does this 1725 RPM motor replace?
This motor is a direct replacement for several ProTech and Emerson models, including legacy parts like 51-40345-07 and 51-42115-01. Always verify the NEMA frame size and shaft dimensions before installation.

Can I change the rotation direction in the field?
Yes, the rotation is electrically reversible by swapping the appropriate power leads during the wiring 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.