Description
The Regal Rexnord Marathon K277 is a commercial-grade three-phase blower motor engineered for demanding HVAC air-handling applications. Built around a NEMA 56 frame with a resilient base mount, this motor delivers reliable, long-service performance in commercial air handlers, blower assemblies, and industrial ventilation systems.
Key Specifications
- Horsepower: 3/4 HP
- Voltage: 208-230/460 VAC
- Phase: Three Phase
- Speed: 1725 / 1425 RPM (60 Hz / 50 Hz)
- Full Load Amps: 3.3-3.0 / 1.5 Amps
- Frame Size: NEMA 56
- Enclosure: Open Drip Proof (ODP)
- Bearing Type: Ball Bearing
- Mounting: Resilient Base
Design & Construction
The Open Drip Proof (ODP) enclosure protects internal windings from dripping liquids and falling debris in standard indoor environments, while allowing free airflow for efficient motor cooling. Precision ball bearings provide reduced friction, quieter operation, and extended service life compared to sleeve-bearing designs. The dual-voltage winding (208-230/460 VAC) offers installation flexibility across a wide range of commercial electrical systems, and the resilient base mount helps dampen vibration for quieter system operation.
Applications
- Commercial air handlers and fan coil units
- Blower assemblies and belt-drive blower systems
- Industrial and commercial ventilation equipment
- HVAC equipment requiring NEMA 56 frame three-phase motors
Why Choose the Marathon K277?
Regal Rexnord’s Marathon line is a trusted name in HVAC and industrial motor solutions, known for quality windings, robust construction, and broad application compatibility. The K277’s dual-voltage capability, ball bearing construction, and resilient base make it a versatile drop-in replacement or new-installation motor for a wide range of commercial HVAC blower systems.
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