Description
Century ORV4539 Permanent Split Capacitor Motor Overview
The Century ORV4539 is a reliable, purpose-built Permanent Split Capacitor (PSC) motor engineered for demanding HVAC applications. Delivering 1/3 HP at 115 Vac on a single-phase circuit, this motor offers two-speed operation for flexible airflow control in a wide range of residential and light commercial systems.
Key Specifications
- Horsepower: 1/3 HP
- Voltage: 115 Vac
- Phase: Single Phase
- Speed: 1675 RPM, 2-Speed
- Amperage: 3.4 Amps
- NEMA Frame: 42Y
- Enclosure: Semi Enclosed
- Bearing Type: Sleeve Bearing
- Shaft Dimensions: 7-1/8″ x 1/2″ x 3-1/2″
- Rotation: Clockwise (CW) Lead End
- Motor Type: Permanent Split Capacitor (PSC)
Design & Construction
The ORV4539 features a semi-enclosed housing that guards internal components against dust and debris while maintaining adequate airflow for thermal management. The sleeve bearing design ensures quiet, smooth operation — ideal for installations where noise levels are a concern. The 42Y NEMA frame provides a standardized mounting footprint for straightforward OEM replacement and retrofit applications.
Performance & Application
With two-speed capability, this PSC motor allows HVAC systems to operate at reduced capacity during lighter load conditions, improving energy efficiency and extending equipment life. The 7-1/8″ shaft length with a 1/2″ diameter and 3-1/2″ usable shaft end accommodates a variety of blower wheel and fan blade configurations. Clockwise lead-end rotation is clearly specified for correct installation orientation.
Ideal For
- Residential and light commercial air handlers
- Fan coil units
- Blower assemblies requiring 2-speed control
- OEM motor replacement on 42Y frame equipment







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