Meet the A.O. Smith Century 1.0 HP Magnum Motor — a rugged, electronically controlled replacement designed to power residential, commercial, and industrial systems with consistent performance. Built on the trusted heritage of Century/A.O. Smith motors and supported by Regal Beloit’s global network, this motor is engineered for reliable starts, smooth operation, and a long service life in demanding environments.

Key benefits

• 1.0 HP Magnum performance delivers solid torque for a wide range of equipment, from fans and pumps to HVAC components, providing dependable operation across varying loads.
• 230V operation aligns with common service panels and control circuits found in HVAC, pool/pump, and light industrial applications.
• Two-speed configuration (2-S) indicates a two-speed variant, enabling optimized performance and efficiency for changing operating conditions.
• Flexible mounting options with Threaded shaft or Square Flange (SqFl) mounting to fit a broad range of equipment retrofits and new installs.
• Extensive replacement compatibility designed to streamline replacements across a broad legacy base, reducing downtime and matching existing footprints.
• OEM-friendly replacement ideal for original equipment manufacturers and HVAC, pool/pump distributors seeking a dependable, widely supported motor.

Why this motor stands out

This Century/A.O. Smith Magnum motor is rooted in a 75+ year tradition of reliability and performance. It’s designed to integrate with electronically controlled systems that emphasize efficiency and responsive speed control, helping equipment run closer to its ideal operating point. With Regal Beloit backing, you gain access to a globally supported product line and a historical track record of quality in residential, commercial, and industrial applications.

Compatibility and replacement notes

This model (1.0 HP Magnum) is intended as a robust replacement option and cross-references a broad set of legacy numbers to simplify procurement and installation. Notable replacements include: 14962, 38507, 5387-0, 5387X, 620093, 663001194965, AOSB975, B975, C1111, EB975, MGT-60-2975, and STS1102R. If your equipment calls for a 230V, two-speed, 1 HP motor with threaded shaft or square flange mounting, this Century/C.A.O. Smith solution is designed to fit with minimal modification and downtime.

Ideal applications

• Residential and light commercial HVAC systems requiring reliable motor replacement for compressors, fans, or pumps.
• Pool and spa equipment where a compact, durable 1 HP drive is needed to maintain steady operation.
• Light industrial equipment and process systems that benefit from adjustable speed performance and robust construction.
• OEM replacement projects where compatibility with established mounting footprints and electrical characteristics is critical.

Tips for installation and care

• Verify mounting compatibility (Threaded shaft vs. Square Flange) to ensure a secure and precise fit with your current coupling or mounting plate.
• Confirm 230V supply and appropriate control wiring for smooth start-up and reliable speed control.
• Check that the rotation direction matches your equipment’s requirements and follow the OEM wiring diagrams during connection.
• Provide adequate cooling and ventilation to prevent overheating, particularly in enclosed spaces or high-load duty cycles.
• Perform routine inspections for bearing wear, shaft alignment, and connection integrity to extend motor life and performance.

Choose the A.O. Smith Century Magnum Motor for a dependable, well-supported replacement that aligns with modern efficiency expectations while preserving the mounting and electrical footprints your system already uses. A smart fit for OEMs, distributors, and end users seeking a proven, long‑lasting motor solution.