Description
3 HP 56J Frame Pool & Spa Motor — 230V, 14.4A, 3450 RPM, SF 1.15, Single-Phase
Designed by trusted brand A.O. Smith / Century, this 3 HP, 56J-frame induction motor is a dependable choice for pool and spa pumps as well as other circulating and drive equipment. Built for 230V single-phase operation, it delivers steady torque and a reliable 3450 RPM to keep filtration, circulation, and related systems running smoothly.
- HP: 3 HP
- Frame: 56J frame
- Voltage: 230V
- Current (full load): 14.4 A
- Speed: 3450 RPM
- Service Factor: 1.15
- Phase: Single-phase
- Shaft: Threaded shaft
- Conduit Connection: 24 mm diameter
- Brand: A.O. Smith / Century
- Ideal applications: Pool & spa pumps, water filtration, and related circulating equipment
- Compact footprint: 56J frame fits retrofit and new installations with standard mounting
This motor’s 1.15 service factor provides a practical 15% overload margin, helping accommodate startup transients or belt adjustments without over-sizing the drive. The threaded shaft simplifies coupling installation, enabling secure connections to belts, pulleys, or gearboxes and reducing setup time during replacements or upgrades. Its 56J frame and 230V single‑phase design make it a straightforward fit for common pool and spa electrical, mechanical, and enclosure configurations.
Meet the Motor 3 HP, a rugged 56J frame induction motor designed to power a wide range of industrial equipment with reliable performance. Built for 230V operation, this unit delivers steady torque and consistent speed to keep pumps, fans, conveyors, and machine tools running smoothly.
With a rated 3 horsepower and a nominal speed of 3450 RPM, it provides the speed and power you need for demanding drive applications. The motor draws approximately 14.4 amps under full load, delivering strong starting torque and steady operation across a variety of loads. Its service factor of 1.15 adds a practical 15% overload tolerance, giving you a reliable margin for startup transients or belt adjustments without oversizing the drive.
Specifications at a glance
- HP: 3
- RPM: 3450
- Volts: 230V
- Amps: 14.4
- Service Factor: 1.15
- Frame: 56J
- Shaft: Threaded
- Approx. AG: 13-7/8
- Conn. Dia.: 24
- Notes: 1
Why this motor stands out
This 56J-frame motor packs solid performance into a compact footprint, making it a versatile choice for retrofit projects and new installations alike. The threaded shaft simplifies coupling installation, reducing setup time and ensuring a secure, reliable connection to belts, pulleys, or gearboxes. The 1.15 service factor provides extra headroom for short-term overloads during start-up or peak-load periods, helping protect both the motor and driven equipment from undue stress.
Ideal applications
- Pumps and fluid handling systems in HVAC or process environments
- Conveyors and material-handling lines
- Industrial fans, blowers, and exhaust systems
- Small machine tools, mills, and presses
Practical installation and operation tips
- Consider pairing with a compatible drive or soft-start to optimize acceleration and reduce mechanical stress on belts and couplings.
- Ensure adequate ventilation and clean cooling airflow to maintain performance in hot or dusty environments.
- Verify alignment and secure threaded shaft connections to minimize vibration and wear over time.
- Check electrical connections against your system voltage (230V) to ensure proper current draw and performance.