Description
The Regal Rexnord Marathon FX12BK004 is a dependable three-phase general purpose motor engineered for demanding commercial and industrial HVAC applications. Delivering 1/2 horsepower at 1725 RPM, this motor is designed for consistent, efficient operation across a wide range of fan, blower, and mechanical drive systems.
Key Specifications
- SKU: FX12BK004
- Brand: Regal Rexnord – Marathon
- Horsepower: 1/2 HP
- Voltage: 230/460V
- Phase: 3-Phase
- Speed: 1725 RPM
Product Highlights
- Dual-voltage 230/460V design offers installation flexibility across a variety of commercial electrical systems
- Three-phase operation delivers smooth, efficient power ideal for continuous-duty HVAC and mechanical applications
- 1725 RPM synchronous speed provides reliable, consistent output for fan and blower assemblies
- Built to Marathon’s rigorous quality standards for long service life and reduced maintenance
- Suitable for use in air handlers, blowers, pumps, and other HVAC mechanical drive applications
Why Choose Marathon?
Regal Rexnord’s Marathon brand has a long-standing reputation for producing high-quality, durable motors trusted by HVAC professionals and mechanical contractors. The FX12BK004 continues that tradition, combining versatile voltage compatibility with robust three-phase performance to keep your systems running efficiently season after season.







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