Description
Lennox 60905 Inverter Duty Blower Motor Overview
The Lennox 60905 is a heavy-duty, inverter-rated blower motor engineered for demanding commercial and industrial HVAC applications. Delivering 150 horsepower at 460VAC on a three-phase supply, this motor is purpose-built to handle the rigors of variable-speed drive systems while maintaining reliable, efficient airflow in large air-handling units and blower assemblies.
Key Specifications
- Horsepower: 150 HP
- Voltage: 460 VAC
- Phase: Three Phase
- Speed: 1190 RPM
- Full Load Amperage: 190/188 Amps
- NEMA Frame Size: 445T
- Enclosure Type: Open Drip-Proof (ODP)
- Bearing Type: 6313-J
- Mounting Configuration: Horizontal Footed Mount
- Motor Type: Inverter Duty
- SKU: 60905
Inverter Duty Design
The inverter duty rating makes the Lennox 60905 fully compatible with variable frequency drives (VFDs), allowing precise speed control and significant energy savings across a wide range of operating conditions. This design protects motor windings from the voltage spikes and harmonics generated by VFD operation, extending service life and reducing maintenance costs.
Open Drip-Proof (ODP) Enclosure
The ODP enclosure allows for maximum ventilation and cooling airflow through the motor, making it ideal for indoor installations in clean, dry mechanical rooms and equipment spaces. The design prevents dripping liquids from entering the motor at angles up to 15 degrees from vertical, providing reliable protection in typical HVAC environments.
445T NEMA Frame & Horizontal Footed Mount
The industry-standard 445T NEMA frame size ensures straightforward drop-in replacement compatibility with existing equipment. The horizontal footed mount provides a stable, secure base for installation in commercial air handlers, blower assemblies, and large HVAC systems.
Heavy-Duty Bearing
- 6313-J bearing construction supports the high radial and axial loads typical of large blower applications
- Designed for long service intervals and extended operational life
Ideal Applications
- Commercial and industrial air handling units (AHUs)
- Large blower assemblies and fan systems
- Variable frequency drive (VFD) controlled HVAC systems
- Mechanical rooms requiring high-horsepower motor solutions
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