Berko 3900-0347-005 Motor

The Berko 3900-0347-005 Replacement Motor is a precision-engineered 1/30 HP fan motor designed for high-voltage industrial heating applications. Operating at 480V with a synchronous speed of 1550 RPM, this motor provides consistent airflow across compatible Berko and QMark unit heaters. Built for durability in demanding environments, it features a standard frame size and shaft configuration for direct-fit replacement, minimizing field labor and downtime. This single-speed motor utilizes a permanent split capacitor design or shaded pole technology typical of the 3900 series to maintain high efficiency under load. When diagnosing heater failure, verify that your fan blade pitch and amp draw align with this motor’s 480V rating to prevent premature winding failure. This OEM-spec motor ensures your forced-air electric heater maintains its original BTU output and thermal safety parameters by providing the specific static pressure required for the heat exchanger.

• Direct OEM Fit: Drop-in replacement for Berko 3900-0347-005, eliminating the need for mounting modifications.
• High-Voltage Stability: Specifically wound for 480V industrial power, ensuring performance without the use of step-down transformers.
• Industrial Speed Rating: Maintains 1550 RPM to provide the necessary CFM for consistent thermal distribution.
• Rugged Construction: Designed to withstand the high ambient temperatures found within forced-air unit heater cabinets.

Is this motor compatible with 208V or 240V systems?
No, this is a dedicated 480V motor. Installing this on lower voltage systems will result in insufficient torque and motor failure.

Does this include the fan blade or mounting bracket?
This item is the motor only. Existing mounting hardware and fan blades must be transferred or replaced separately during the HVAC repair.

What are the primary causes of failure for this motor?
Bearing wear from heavy dust accumulation or winding burnout due to voltage fluctuations in industrial settings are the most common failure points for 1/30 HP Berko motors.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.