Description
US Motors 3258 Capacitor Start Capacitor Run Circulating Pump Motor
The US Motors 3258 is a heavy-duty, single-phase circulating pump motor engineered for reliable hydronic and HVAC pumping applications. Built around a 56Y NEMA frame with an Open Drip Proof (ODP) enclosure, this motor delivers consistent 1725 RPM performance and is designed for long-lasting service in demanding environments.
Key Specifications
- Horsepower: 1/2 HP
- Voltage: 115/208-230 VAC
- Phase: Single Phase
- Speed: 1725 RPM
- Amperage: 5.7 A (115V) / 2.9–3.0 A (208-230V)
- NEMA Frame Size: 56Y
- Enclosure: Open Drip Proof (ODP)
- Bearing Type: Ball Bearing
- Mount Type: Bracket Mount
- Shaft Diameter: 5/8″
- Rotation: Reversible
- Motor Type: Capacitor Start Capacitor Run (CSCR)
Features & Benefits
- Capacitor Start / Capacitor Run (CSCR) design provides high starting torque and efficient continuous operation — ideal for circulating pump loads
- Reversible rotation allows flexible installation to match system requirements without additional components
- 56Y NEMA frame ensures direct drop-in compatibility with standard pump couplings and mounting configurations
- Dual-voltage capability (115/208-230V) simplifies installation across a wide range of electrical supply configurations
- Ball bearing construction reduces friction, extends motor life, and minimizes maintenance requirements
- Open Drip Proof (ODP) enclosure protects internal components from dripping liquids while allowing cooling airflow in indoor or protected environments
- 5/8″ shaft diameter provides robust coupling to pump assemblies for dependable power transmission
- Bracket mount design enables straightforward installation and secure positioning in hydronic systems
Typical Applications
- Hydronic heating and cooling circulating pumps
- Hot water recirculation systems
- Boiler feed and distribution pump drives
- Commercial and residential HVAC hydronic systems
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