Marvair 40046 Motor

The Marvair 40046 Motor is a heavy-duty, 3/4 HP HVAC blower motor engineered for precision performance in commercial and industrial environmental control units. Operating at 230V 1ph, this 48Y frame motor features a Permanent Split Capacitor (PSC) design and a 2-speed configuration (1120 RPM) to handle varying static pressure requirements. Designed for high-cycle reliability, the 40046 includes automatic overload protection and a Counter Clockwise Lead End (CCWLE) rotation. This unit is the direct OEM replacement motor for F48H82B81, K55HXRGW-1956, and 7126-5028, ensuring a precise drop-in fit for Marvair wall-mount HVAC systems. The dual shaft (7.5" x 0.5") and belly band mount allow for versatile installation in open-enclosure blower assemblies.

Key Benefits for Technicians:

• Direct Cross-Reference Compatibility: Replaces Marvair 40046-SP, P40046, and Emerson/US Motors models without mounting modifications.
• Industrial Spec Construction: Equipped with a sleeve bearing system and an open enclosure for optimal heat dissipation during continuous operation.
• Optimized Performance: The 1120 RPM 2-speed operation allows for precise airflow tuning to meet specific system CFM requirements.
• Standardized Frame Size: Utilizing a 48Y frame, this 3/4 HP motor integrates seamlessly with standard belly band and cradle mounts.

Common Technical Questions:

What capacitor is required for the Marvair 40046?
This motor requires a 10 MFD / 370V capacitor for proper PSC motor startup and run torque. The capacitor is sold separately.

Is this motor rated for 50Hz or 60Hz power supplies?
The Marvair 40046 is rated for both 50/60Hz at 230V, making it suitable for standard domestic and various international power configurations.

Can this motor be used in outdoor condensing units?
No, this is an Open Air Over (OAO) motor designed for indoor blower applications or shielded compartments where the motor is within the airflow stream. It should not be exposed to direct weather.

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.