Description
The US Motors 4811 is a heavy-duty condenser fan motor engineered for dependable performance in residential and light commercial air conditioning applications. Designed as a direct replacement or upgrade motor, it delivers the precise speed, torque, and electrical characteristics required to keep condenser fans running efficiently season after season.
Electrical Specifications
- Voltage: 230V AC
- Phase: Single Phase
- Amperage: 1.8 Amps
- Motor Type: Permanent Split Capacitor (PSC)
Mechanical Specifications
- Horsepower: 1/3 HP
- Speed: 1625 RPM
- NEMA Frame Size: 48Y
- Shaft Diameter: 1/2″
- Rotation: Reversible
- Mount Type: Resilient Mount
Construction & Design Features
- Enclosure: Open Air Over (OAO) — optimized for outdoor condenser fan duty
- Bearing Type: Self-Aligning Sleeve Bearing — reduces friction and extends service life
- Resilient mount design absorbs vibration for quieter, smoother operation
- Reversible rotation provides installation flexibility for a wide range of equipment configurations
- 48Y NEMA frame ensures broad cross-reference compatibility with OEM and aftermarket applications
Application
The US Motors 4811 is ideally suited for condenser fan duty in split-system air conditioners, heat pumps, and packaged rooftop units. The PSC motor design offers high efficiency and reliable starting without the need for a start capacitor, while the self-aligning sleeve bearing ensures long-term durability even in demanding outdoor environments. The open air-over enclosure allows airflow from the fan blade to cool the motor, making it the correct choice for through-the-blade airflow condenser applications.
Why Choose the US Motors 4811?
- Broad OEM compatibility via standard 48Y NEMA frame
- Reversible rotation reduces the need to stock multiple SKUs
- Resilient mount minimizes vibration transmission to the unit cabinet
- Self-aligning sleeve bearing accommodates minor shaft misalignment
- Trusted US Motors quality for HVAC professionals
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