Description
US Motors 1390 — Permanent Split Capacitor Motor Overview
The US Motors 1390 is a reliable, versatile permanent split capacitor (PSC) motor engineered for demanding HVAC fan and blower applications. Built around a rugged 42Y NEMA frame, this motor delivers consistent multi-speed performance in residential and light commercial systems where dependable airflow control is essential.
Electrical Specifications
- Horsepower: 1/4 HP
- Voltage: 115V AC
- Phase: Single Phase
- Amperage: 2.8 Amps
- Motor Type: Permanent Split Capacitor (PSC)
Mechanical Specifications
- Speed: 1050 RPM, 3-Speed
- NEMA Frame Size: 42Y
- Enclosure Type: Open Air Over (OAO)
- Bearing Type: Self-Aligning Ball Bearing
- Mount Type: Stud Mount
- Shaft Diameter: 1/2″
- Rotation: Reversible
Key Features & Benefits
- Three-speed operation provides flexible airflow control for a variety of HVAC configurations
- Reversible rotation allows for easy adaptation to different installation orientations
- Self-aligning ball bearings reduce wear and extend motor service life
- Open air over enclosure promotes efficient motor cooling during continuous operation
- Stud mount design simplifies installation and replacement in standard HVAC equipment
- 42Y NEMA frame ensures broad cross-compatibility with OEM and aftermarket applications
- PSC design delivers smooth, quiet operation with improved energy efficiency over shaded-pole motors
Typical Applications
- Residential and commercial furnace blowers
- Air handler fan motors
- Evaporator and condenser fan assemblies
- Multi-speed ventilation systems
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