Description
The Marathon U424A is a heavy-duty, general-purpose three-phase induction motor engineered for reliable performance in demanding commercial and industrial HVAC applications. Manufactured by Regal Rexnord under the trusted Marathon brand, this motor delivers consistent power output and long service life in a wide range of fan, pump, and blower installations.
Key Specifications
- Horsepower: 2 HP
- Voltage: 208-230/460 VAC
- Phase: Three Phase
- Speed: 1800 RPM
- Full Load Amps: 6.2-6/3 Amps
- Frame Size: 145T (NEMA Standard)
- Enclosure: Open Drip Proof (ODP)
- Bearing Type: Ball Bearing
- Mounting: Rigid Base
- SKU: U424A
Motor Design & Construction
The 145T NEMA-frame construction ensures straightforward drop-in compatibility with standard motor mounts and couplings. The Open Drip Proof (ODP) enclosure allows for adequate ventilation while protecting internal components from dripping liquids falling at angles up to 15° from vertical — ideal for indoor mechanical rooms and equipment closets. Precision ball bearings provide smooth, low-friction operation and extended bearing life, reducing maintenance intervals and downtime.
Electrical Performance
- Dual voltage capability (208-230/460V) allows flexible installation across a wide range of three-phase power supplies
- 1800 RPM synchronous speed suits a broad range of direct-drive and belt-drive HVAC equipment
- Full load current draw of 6.2-6 amps (high voltage) / 3 amps (low voltage) supports proper circuit sizing and protection
Typical Applications
- Commercial HVAC blowers and air handlers
- Hydronic and chilled water pumps
- Condenser and cooling tower fans
- Industrial ventilation and exhaust systems
- General-purpose machinery and equipment drives
Why Choose the Marathon U424A?
Backed by Regal Rexnord’s decades of motor engineering expertise, the Marathon U424A is built to meet the rigorous demands of commercial HVAC environments. Its rigid base mounting, dual-voltage flexibility, and ball bearing construction make it a versatile, dependable choice for contractors and facilities managers seeking a long-lasting motor solution.
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