Description
The Regal Rexnord Marathon GT1025A is a heavy-duty, general purpose totally enclosed fan-cooled (TEFC) motor engineered for reliable performance in demanding commercial and industrial HVAC applications. With a robust 20 horsepower output and a synchronous speed of 1768 RPM, this motor delivers consistent torque and efficiency across a wide range of driven equipment including fans, blowers, pumps, and compressors.
Key Specifications
- Brand: Regal Rexnord – Marathon
- Model / SKU: GT1025A
- Horsepower: 20 HP
- Speed: 1768 RPM
- Voltage: 230/460V
- Frame: 256T
- Enclosure: TEFC (Totally Enclosed Fan Cooled)
Enclosure & Construction
The TEFC enclosure protects internal windings from dust, moisture, and contaminants, making the GT1025A well-suited for indoor and outdoor installations where environmental exposure is a concern. The rugged cast iron or heavy-gauge steel frame provides structural integrity and efficient heat dissipation under continuous-duty operating conditions.
Electrical Compatibility
Dual-voltage capability at 230/460V allows flexible integration into a variety of three-phase power systems, simplifying installation and reducing the need for additional transformers or step-down components. The 256T NEMA frame ensures direct drop-in compatibility with standard motor mounts and couplings.
Typical Applications
- Commercial HVAC fans and blowers
- Centrifugal and axial pump drives
- Air handling units (AHUs)
- Industrial conveyor and compressor drives
- Cooling tower fan motors
Why Choose the Marathon GT1025A?
Regal Rexnord’s Marathon line is recognized throughout the HVAC and industrial trades for long service life, consistent performance, and broad parts availability. The GT1025A combines a proven TEFC design with dual-voltage flexibility and a standard NEMA 256T frame, making it a dependable choice for replacement or new-installation motor projects.
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