AO Smith Century C-Face 3.0 HP Motor 56C Frame 230V 1-Phase Keyed Shaft SK1302 Industrial Grade

The A.O. Smith/Century SK1302 C-Face 3.0 HP Motor delivers reliable, ready-to-install performance for a wide range of single‑phase, 208–230V applications. Built on the enduring legacy of A.O. Smith Electric Motors and Century’s engineering, this 56C frame motor is designed to be a practical, durable replacement that fits common equipment without modification.

Key specifications at a glance

• Frame / Mount: 56C frame with C-Face mounting for flexible, drop-in compatibility
• Horsepower: 3.0 HP continuous operation (with 3.5 HP total capability)
• Voltage / Phase: 208–230V, single-phase (1‑ph)
• Speed: 1-speed operation for straightforward control
• Shaft: Keyed shaft for secure coupling to pulleys, gears, or couplings
• Capacitor: Top-mounted run capacitor included for efficient starting and running
• Amperage: Operational current typically in the 13.3–15.0A range depending on load and supply
• Motor Style: C-Face design, engineered for easy mounting and serviceability

Why this motor stands out

• Proven manufacturing heritage From a company with over 75 years serving residential, commercial, and industrial markets, the A.O. Smith/Century motor lineup has become a trusted standard for replacement motors worldwide. Regal Beloit’s stewardship continues that tradition with consistent quality and availability.
• Versatile, widely compatible 56C frame The 56C frame is one of the most common replacement sizes in HVAC, pool/pump, and light industrial equipment. The C-Face mounting and keyed shaft simplify alignment and secure attachment to existing assemblies, reducing installation time and downtime.
• Capacitor‑run efficiency The top-mounted capacitor arrangement supports reliable start-up and steady, efficient running in single‑phase systems, helping to minimize heat buildup and performance fluctuations in variable loads.
• OEM-ready replacement Designed with OEM-style construction to meet the expectations of replacement motor programs used by HVAC and pool/pump distributors, ensuring compatibility with a broad range of legacy equipment.

Ideal use cases and scenarios

• HVAC equipment replacement Swap into air handlers, condensate pumps, or blower assemblies where a 1‑phase, 208–230V motor with a 56C frame is specified. The keyed shaft and C‑Face mount align with common mounting patterns and drive couplings.
• Pool and spa equipment Replace aging or failed motors in circulating pumps or feeder units where a single‑phase, 56C motor is required for dependable, low‑maintenance operation.
• Industrial fans and blowers Suitable for moderate‑duty fans and blowers in commercial settings, where a robust, readily available 3.0 HP single‑phase solution keeps airflow systems operating smoothly.
• General replacement strategy Use as a standard, high‑compatibility option when upgrading aging motors that previously used a 56C, 1‑ph, top‑capacitor configuration, reducing downtime and inventory complexity.

What sets this motor apart from generic alternatives

• Authentic heritage and support Manufactured under the A.O. Smith/Century lineage with Regal Beloit’s global infrastructure, ensuring parts availability, technical support, and a long service life for replacement programs.
• Conscious design for easy installation The C‑Face mounting and keyed shaft, combined with a top-mounted capacitor, streamline alignment, belt/pulley changes, and capacitor servicing without specialized adapters.
• Consistent performance across voltage variants The 208–230V range covers typical U.S. supply conditions, making it a dependable choice for facilities that experience voltage fluctuations or require flexible sourcing.

Practical installation and usage tips

• Match the 56C frame and C-Face footprint to your existing mountings to avoid shims or adapters.
• Verify the shaft coupling is keyed and aligned to prevent rotor end play and belt wear.
• Confirm your system uses a top-mounted capacitor configuration; if the capacitor is external or relocated, ensure correct capacitance and wiring per your equipment’s requirements.
• Prepare for single‑phase startup surges by inspecting electrical connections, fusing, and any soft‑start or VFD components in the drive train. Although designed for straightforward operation, proper wiring and protection improve longevity.
• When replacing, check that your equipment’s nameplate matches the motor’s horsepower, voltage, and frame specifications to avoid under- or over‑loading the drive system.

Reliability, longevity, and support you can trust

With a heritage rooted in the long‑standing reliability of A.O. Smith Electric Motors and Century Electric Motors, this SK1302 motor is built to withstand daily use in demanding environments. Its 56C frame and C-Face design are part of a proven platform that OEMs and distributors repeatedly select for replacements, because they know they’ll get consistent performance, straightforward maintenance, and a broad service network if replacements or parts are ever needed.

In short, the A.O. Smith/Century SK1302 C-Face 3.0 HP Motor is a thoughtfully engineered replacement that balances classic reliability with modern efficiency. If your equipment requires a single‑phase, 208–230V solution with a 56C frame, a keyed shaft, and a top‑mounted capacitor, this motor is built to deliver steady operation, easy installation, and dependable service for HVAC, pool/pump, and light industrial applications.