A. O. Smith P66N4A4 HD56DL200 SKCWJ52KX 2 HP Blower Motor

The A.O. Smith P66N4A4 HD56DL200-SKCWJ52KX is a 2 HP, 3-phase, 208-230V motor designed for HVAC applications requiring reliable, continuous-duty performance at 1725 RPM.

⚙️ Motor Specifications & Performance

• Horsepower (HP): 2 HP
• This motor delivers moderate power, suitable for driving fans, blowers, and pumps in commercial HVAC systems.
• Voltage: 208-230V, 3-Phase
• Three-phase motors are more efficient and durable than single-phase, making this ideal for commercial or industrial setups.
• The dual-voltage rating allows flexibility in wiring depending on your building’s electrical system.
• Frequency: 60 Hz
• Standard for North American electrical systems, ensuring compatibility with most HVAC equipment.
• Speed: 1725 RPM

• This is a standard low-speed motor, often used in applications where quieter operation and higher torque are preferred—like air handlers or belt-driven fans.

🧰 Construction & Design Details

• Frame Type: 66
• A common frame size that fits many HVAC mounts and brackets.
• Enclosure: Likely Open Drip Proof (ODP) or Totally Enclosed Fan Cooled (TEFC)
• ODP motors are suitable for indoor use with good ventilation.
• TEFC motors are better for dusty or moist environments—check the specific enclosure type to match your installation needs.
• Duty Rating: Continuous
• Designed to run non-stop without overheating, which is essential for HVAC systems that operate around the clock.
• Rotation: Typically reversible

• Allows flexibility in installation depending on airflow direction requirements.

🔌 Application Scenarios

This motor is commonly used in:

• Air handling units (AHUs)
• Large exhaust fans
• Commercial refrigeration systems
• Water circulation pumps in chillers or boilers

Its robust design and continuous-duty rating make it ideal for demanding HVAC environments where reliability and efficiency are critical.

It can be used as a replacement for Carrier units.