AO Smith Century Three Quarter HP C Face Pool Motor Single Phase 115 230V ST1102 56J

A.O. Smith Century ST1102 is a rugged, single-speed pool motor designed for reliable round-the-clock circulation. Built around a 56J frame with a C-Face mount and threaded shaft, this replacement motor fits a wide range of pool pumps while delivering consistent performance for years of service.

• Frame and mounting: 56J frame with C-Face, threaded shaft for secure, easy coupling to standard pump impellers.
• Electrical specifications: 1-phase, dual voltage 115/230V, 60 Hz, with a nominal 3450 RPM to match typical pool pump performance.
• Horsepower and service factor: 1.0 HP nominal, with a service factor of 1.5 (total HP up to 1.5) to handle short-term overloads without tripping.
• Rotation and speed: Single-speed operation with CCW rotation, ideal for straightforward, maintenance-friendly pool pumps.
• Current draw: Approximately 18.6 A at 115V and 9.3 A at 230V (MAX AMPS), giving you flexibility and compatibility with common electrical setups.
• Protection and insulation: Thermally protected with insulation class B for dependable performance in typical pool environments.

This Century motor is purpose-built for pool systems, offering quick installation with threaded shaft compatibility and a robust 56J frame. It’s an excellent direct replacement option for existing ST1102-style motors, helping you restore consistent water circulation, clear filtration, and efficient skimming with minimal downtime.

Ideal use scenarios

• Replacing an aging or failed pool motor in residential in-ground systems that use a 56J, C-Face, threaded-shaft design.
• Upgrading to a dependable, single-speed pool motor that operates smoothly on either 115V or 230V circuits.
• Situations where a durable, thermally protected motor is favored to withstand seasonal pool usage and variable load demands.

Choosing A.O. Smith Century ST1102 means opting for a proven pool motor with straightforward compatibility, reliable performance, and a design that simplifies serviceability. If you’re updating your pool’s pumping capacity or restoring efficiency to an older system, this motor delivers the right balance of power, simplicity, and longevity.