Description
The Regal Rexnord Marathon K280 is a heavy-duty commercial blower motor engineered for demanding HVAC and industrial air-handling applications. Built on a rugged 56 frame platform with a resilient base mount, this dual-horsepower, dual-speed motor delivers dependable performance across a wide range of blower and fan system configurations.
Key Features
- Dual horsepower output: 3/4 HP and 1/4 HP for flexible speed-stage operation
- 460Vac three-phase input voltage for commercial and industrial power systems
- Dual operating speeds: 1725 RPM (high) and 1140 RPM (low)
- Low amp draw: 1.3A at high speed / 0.7A at low speed for energy efficiency
- NEMA 56 frame size for broad cross-compatibility and easy replacement
- Open Drip Proof (ODP) enclosure protects against dripping liquids in standard indoor environments
- Precision ball bearings for long service life and reduced maintenance
- Resilient base mount for vibration dampening and quiet operation
Specifications
- Brand: Regal Rexnord – Marathon
- Model / SKU: K280
- Horsepower: 3/4 – 1/4 HP
- Voltage: 460 Vac
- Phase: Three Phase
- Speed: 1725 / 1140 RPM
- Full Load Amps: 1.3 / 0.7 A
- Frame Size: 56
- Enclosure: Open Drip Proof (ODP)
- Bearing Type: Ball Bearing
- Mount Type: Resilient Base
- Motor Type: Blower Motor
Application
The Marathon K280 is ideally suited for commercial air handlers, blower assemblies, and fan coil units operating on three-phase 460V power. The dual-speed capability allows system designers to match airflow output to load conditions, improving comfort and energy efficiency. The ODP enclosure and ball bearing construction make this motor a reliable long-term investment for mechanical rooms and equipment installations where drip protection and low-maintenance operation are priorities.
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