Description
The US Motors 3259 is a dependable split phase circulating pump motor engineered for hydronic heating and circulator pump applications. Built around a robust 48Y NEMA frame, this motor delivers reliable, consistent performance in demanding HVAC and plumbing system environments.
Key Specifications
- Horsepower: 1/4 HP
- Voltage: 115V AC
- Phase: Single Phase
- Speed: 1725 RPM
- Full Load Amps: 4.6 Amps
- NEMA Frame Size: 48Y
- Enclosure Type: Open Drip Proof (ODP)
- Bearing Type: Ball Bearing
- Mount Type: Bracket Mount
- Shaft Diameter: 1/2″
- Rotation: CCW (Counter-Clockwise), Switch End
- Motor Type: Split Phase
Product Highlights
- 48Y NEMA frame ensures direct drop-in compatibility with a wide range of circulating pump assemblies
- Ball bearing construction provides long service life and reduced maintenance requirements
- Open Drip Proof (ODP) enclosure protects internal components from dripping liquids in standard indoor installations
- Bracket mount design simplifies installation and replacement in existing pump setups
- 1/2″ shaft diameter accommodates standard pump couplings and impeller configurations
- Counter-clockwise (CCW) rotation from the switch end ensures correct pump impeller direction
- Split phase design delivers reliable starting torque for circulating pump loads
Typical Applications
- Hydronic heating circulating pumps
- Hot water recirculation systems
- Boiler loop pump replacement
- Radiant floor heating pump motors
- Commercial and residential HVAC hydronic systems
The US Motors 3259 is a proven replacement motor solution for HVAC professionals and hydronic system contractors. Its standardized 48Y frame and 1/2″ shaft make it compatible with a broad range of OEM and aftermarket pump bodies, reducing downtime and simplifying service calls.







Reviews
There are no reviews yet.