Description
The Marathon X528 is a rugged, industrial-grade three-phase motor engineered for demanding HVAC and air-handling applications. Featuring an open air-over (OAO) enclosure, this motor is designed to be cooled by the airstream of the equipment it drives — making it an ideal choice for fan and blower installations where airflow is consistently present.
Key Features
- 1 HP output for reliable, consistent power delivery
- Dual-voltage rated at 208-230/460V AC for flexible installation across common commercial electrical systems
- Three-phase operation for smooth, efficient performance and reduced electrical stress
- 900 RPM synchronous speed for low-speed, high-torque applications
- Full-load amperage of 5.1–5.3A (208-230V) / 2.65A (460V)
- 56HZ NEMA frame size for standardized mounting compatibility
- Open Air-Over (OAO) enclosure — cooled by the driven airstream
- Precision ball bearings for long service life and reduced maintenance
- Rigid base mount for secure, vibration-resistant installation
Electrical Specifications
- Horsepower: 1 HP
- Voltage: 208-230/460V AC
- Phase: Three-Phase
- Speed: 900 RPM
- Full-Load Amps: 5.1–5.3A (Low Voltage) / 2.65A (High Voltage)
- Frame Size: 56HZ
Mechanical Specifications
- Enclosure: Open Air-Over (OAO)
- Bearing Type: Ball Bearing
- Mounting: Rigid Base
Applications
- Commercial HVAC fan and blower systems
- Air-handling units (AHUs)
- Evaporative coolers and condenser fan assemblies
- Industrial ventilation equipment
- Any application requiring a low-speed, three-phase OAO motor
Backed by Marathon’s reputation for quality and durability, the X528 delivers dependable performance in continuous-duty environments. The 56HZ NEMA frame ensures straightforward drop-in replacement compatibility with standard motor mounts, minimizing installation time and downtime.
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