Description
A.O. Smith Century C-Face 3/4 HP Motor (B638) – Dual-Voltage OEM Replacement
The A.O. Smith Century C-Face 3/4 HP Motor (B638) is an OEM-grade replacement engineered for pool pumps, spa systems, and light commercial equipment. Built on Century/A.O. Smith’s 75-year legacy, it delivers dependable, straightforward retrofits with long service life.
- C-Face mounting: Standard footprint that fits most pump housings for quick, hassle-free installation.
- 3/4 HP performance: Balanced torque suitable for residential pool pumps and spa jets without overdesign.
- 1-S, threaded shaft: Secure, dependable coupling to the impeller with a simple single-speed drive.
- 115/230V dual voltage: Flexible wiring options to match your existing electrical setup without extra adapters.
- OEM heritage and global support: Backed by Century/A.O. Smith reliability with Regal Beloit’s worldwide network and experienced distributors for replacements.
The B638 motor is designed for straightforward, drop-in replacements that preserve performance and efficiency. Its C-Face footprint and threaded shaft simplify installation, while dual-voltage operation keeps wiring simple and future-friendly. Ideal for residential pool pumps, spa jet systems, and light commercial equipment that require a compact, reliable 3/4 HP drive with durable, long-term service.
Introducing the A.O. Smith / Century C-Face 3/4 HP Motor (B638) — a proven, OEM-grade replacement built to keep pool pumps, spa systems, and light commercial equipment running smoothly. With the enduring reliability that defines Century/A.O. Smith for more than 75 years, this motor is designed for simple retrofits, steady performance, and long service life. Bath & Spa Parts Online proudly offers Century/A.O. Smith replacements to support pool, spa, and HVAC applications with confidence.
Key features that matter
- C-Face mounting — a standard footprint that fits most pump housings, enabling quick, hassle-free installation.
- 3/4 HP performance — balances ample torque for residential pool pumps and spa jets without overdesign.
- 1-S, threaded shaft (Thd) — single-speed operation paired with a threaded shaft for secure, dependable coupling to the impeller.
- 115/230V dual voltage — flexible wiring options to match your existing electrical setup without extra adapters.
- OEM heritage, global support — backed by A.O. Smith / Century lineage and Regal Beloit’s worldwide network, with experienced distributors specializing in pool, spa, and HVAC replacements.
Why choose this replacement motor
When your pool or spa motor falters, downtime disrupts your routine. The B638 motor is designed for straightforward, drop-in replacements that preserve performance and efficiency. Its C-Face footprint and threaded shaft simplify installation, while dual-voltage operation keeps wiring simple and future-friendly. Built on Century/A.O. Smith reliability, this motor is a dependable choice for long-term peace of mind.
Ideal applications
- Residential pool pumps and spa jet systems requiring a reliable, compact drive.
- Retrofits for Century/A.O. Smith systems where a direct, easy swap is preferred.
- Light commercial equipment that uses C-Face, 3/4 HP motors with dual-voltage capability.
Specs snapshot (B638)
- HP: 3/4
- Voltage: 115/230
- Shaft: 1-S, threaded (Thd)
- Mount: C-Face
- Line: A.O. Smith / Century replacement motor
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WHY USE A.O. SMITH (AOS)/CENTURY PRODUCTS? |
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Regal Beloit America, Inc. (Century Electric Motors / A.O. Smith Electric Motors) is a leading supplier of electric motors for residential, commercial, and industrial applications. With operations in the United States, Mexico, China, and Europe, Regal Beloit America, Inc. has the ability to serve its customers electric motor needs on a global basis. We offer a comprehensive line of hermetic motors (used in air conditioning compressors), fractional horsepower A/C and D/C motors, and integral horsepower motors. We sell our products directly to original equipment manufacturers (OEMs), and replacement motors to HVAC and pool/pump distributors. |
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WHY USE A.O. SMITH (AOS)/CENTURY PRODUCTS? |
| |
|
Regal Beloit America, Inc. (Century Electric Motors / A.O. Smith Electric Motors) is a leading supplier of electric motors for residential, commercial, and industrial applications. With operations in the United States, Mexico, China, and Europe, Regal Beloit America, Inc. has the ability to serve its customers electric motor needs on a global basis. We offer a comprehensive line of hermetic motors (used in air conditioning compressors), fractional horsepower A/C and D/C motors, and integral horsepower motors. We sell our products directly to original equipment manufacturers (OEMs), and replacement motors to HVAC and pool/pump distributors. |
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