Description
3 HP 56J Frame Dual-Voltage Electric Motor — 3450 RPM, Threaded Shaft
From trusted A.O. Smith / Century Electrical, this compact 3 HP motor is designed for pool and spa equipment and light industrial machinery. Its 56J frame, threaded shaft, and dual-voltage capability deliver dependable performance with straightforward installation and retrofit potential.
- Power and speed: 3 HP output at 3450 RPM for reliable circulation and drive of pumps, fans, and small conveyors in pool and spa setups.
- Dual-voltage operation: 208-230 V and 460 V compatibility, enabling flexible wiring across different facilities without swapping hardware.
- Current draw: 9.0 A at 208-230 V; 4.5 A at 460 V, aiding precise sizing of controllers, breakers, and feeders.
- Frame and shaft: 56J frame with a threaded shaft for secure coupling and easy alignment during installation.
- Service factor: 1.15, providing headroom for startup bursts and light overloads to protect driven components.
- Protection: Protector: None — plan external overload protection as part of your system design.
- Conduit size: Conduit Dia.: 29; Approx. AG: 11-7/32
- Mounting compatibility: Standard 56J footprint ensures broad compatibility with common mounting kits and accessories for pools, spas, and lightweight machinery.
- Brand reliability: Backed by A.O. Smith / Century Electrical, known for durable, field-proven motors in pool and spa applications.
- Ideal applications: Pool circulation pumps, spa pumps, water features, and other light-industrial equipment requiring a compact, dependable drive.
This motor’s combination of 3450 RPM speed, 3 HP output, and 1.15 service factor delivers confident performance across typical load profiles and frequent start-stop cycles. The threaded shaft simplifies coupling, while the dual-voltage design reduces inventory and streamlines retrofits across different sites. For best results, pair with drives and belts rated at least 1.15x the motor’s service factor and implement external overload protection aligned to your system’s surge characteristics. The 56J footprint makes replacements straightforward in existing pool and spa installations, helping minimize downtime during upgrades or service.
The Motor 3 HP, 56J Frame is a compact, dependable drive designed to power a wide range of industrial equipment with precision and consistent performance. With a solid 3 horsepower output and a classic 56J frame, it integrates smoothly into existing setups—from belt-driven conveyors to pumps, mixers, and small automation machines—delivering reliable torque where you need it most. Operating at 3450 RPM, it provides quick acceleration and steady speed under load, keeping your workflow moving smoothly.
Designed for flexibility on the shop floor, this motor offers dual-voltage capability and intelligent efficiency for different power networks. It supports 208-230/460-volt systems, so you can deploy the same motor across multiple tools or facilities without swapping hardware. Current draw is 9.0 A at 208-230 V and 4.5 A at 460 V, which helps you size controllers and breakers with confidence. A service factor of 1.15 provides additional headroom for startup bursts and light overloads, helping protect driven components and extend service life.
Key specifications at a glance
- Power and speed: 3 HP, 3450 RPM
- Voltage and current: 208-230/460 V; max amps 9.0 A / 4.5 A
- Frame and shaft: 56J frame with threaded shaft for secure coupling
- Protection: Protector: None (plan external overload protection as part of your system)
- Service factor: 1.15
- Conduit and dimensions: Conduit Dia.: 29; Approx. AG: 11-7/32
This motor is ideal for OEMs, machine designers, and maintenance teams seeking a reliable, broadly compatible drive for conveyors, pumps, compressors, fans, and light industrial machinery. Its 56J frame ensures compatibility with a wide range of mounting kits and accessories, while the threaded shaft simplifies setup and alignment during installation. The combination of 3450 RPM speed, 3 HP output, and a healthy service factor means you can expect confident performance across typical load profiles and frequent start-stop cycles.
Practical tips for getting the most from your Motor 3 HP, 56J Frame: align the shaft precisely with your coupling, verify external overload protection is in place to match the motor’s surge characteristics, and choose drives and belts rated for at least 1.15x service factor to maintain reliability during peak operation. If your system requires a quick swap or retrofit, this motor’s standard 56J footprint minimizes downtime and keeps replacement work straightforward.