FK3G280-4AAB-67 Plug Fan, 380VAC, 280mm, 3656.1 m3/h

The FK3G280-4AAB-67 plug fan is engineered for heavy-duty industrial ventilation where both high airflow and extreme static pressure are non-negotiable. This 380VAC unit delivers a maximum airflow of 3656.1 m³/h and a remarkable static pressure of 1158 Pa, making it a single-fan solution that replaces multiple smaller units in demanding ducted systems. Powered by a BLDCEC102 electronically commutated motor, it achieves 700W of output with precision speed control and superior energy efficiency compared to traditional AC induction motors. The 280mm die-cast aluminum impeller is designed for low-turbulence operation, reducing noise to 82.5 dB(A) while maintaining robust performance at 3270 RPM. With a rotor diameter of 102mm and 18AWG cabling (274mm), this fan is ready for integrated OEM applications in HVAC, cleanroom, and industrial process equipment. Its full protection features include thermal overload safeguards and IP-class insulation, ensuring reliable operation in continuous-duty cycles. Backed by FANOVA's OEM/ODM expertise and international certifications, this plug fan represents a high-pressure, high-volume cornerstone for modern ventilation architecture.

The FK3G280-4AAB-67 is a backward-curved centrifugal plug fan designed to meet the most stringent industrial airflow and pressure requirements. Its impeller, constructed from die-cast aluminum alloy, features a backward-curved blade geometry that maximizes aerodynamic efficiency while minimizing turbulence-induced noise. The 280mm impeller diameter, combined with a 102mm rotor, allows the fan to achieve a tip speed that generates a maximum static pressure of 1158 Pa (4.63 in.wg) and a free-air flow of 3656.1 m³/h (2151.6 CFM). At the rated speed of 3270 RPM, the fan draws 1.1A from a 380VAC (range 304V) supply, consuming 700W of power. This high-power capability places it in the heavy-duty category, suitable for applications requiring high pressure differentials such as HEPA filtration systems, long duct runs, and multi-outlet manifolds.

The integrated BLDCEC102 motor represents the pinnacle of EC (electronically commutated) technology, featuring a permanent-magnet synchronous rotor driven by a sensorless field-oriented control algorithm. This motor architecture ensures near-sinusoidal current waveforms that reduce harmonic distortion and electromagnetic interference, while achieving efficiency levels above 90% across the operating envelope. The motor controller supports external 0-10V or PWM speed control signals, allowing seamless integration with building management systems (BMS) or programmable logic controllers (PLCs). Additionally, the EC motor provides soft-start capability, eliminating inrush current spikes and extending belt or coupling life when used in direct-drive configurations.

Thermal and electrical protection is robust: the motor includes overcurrent, overvoltage, undervoltage, and stall detection circuits, coupled with automatic restart functionality after fault clearance. The insulation system is rated Class F (155°C), and the winding is impregnated with moisture-resistant varnish to withstand humid environments. The housing and endcaps are precision die-cast aluminum, providing excellent heat dissipation and mechanical rigidity, while the entire assembly is balanced to ISO G2.5 grade to minimize vibration. Bearings are sealed, pre-lubricated ball bearings rated for L10 life of 40,000 hours at 70°C ambient, ensuring long-term reliability in continuous operation.

Electrical interface is a 274mm long, 18AWG cable (for 380VAC power) with stripped and tinned leads, ready for connection to a terminal block or connector of the customer's choice. The fan is manufactured under ISO9001 quality systems and is available with CE, UL, or CCC certifications depending on the target market. FANOVA's in-house dynamometer testing verifies performance curves for each unit, ensuring compliance with AMCA 210 airflow standards. This plug fan is ideal for OEM integration into air handling units, energy recovery ventilators, industrial ovens, and agricultural drying systems where high static pressure and large airflow are critical design parameters.

AC Plug Fan
Type	FK3G280-4AAB-67
Model	BLDCEC102

Ⅰ.When taking out the fan, do not directly lift the fan lead wire. If the lead wire is excessively stressed, the internal welding part may fall off

Ⅱ.Do not plug or unplug the fan lead plug when the fan is running

Ⅲ.If the fan does not work after starting, do not touch the impeller, rotor, or other parts, professional technical personnel are required to inspect the fan to prevent sudden start of the fan from causing hand or other personal injury

Ⅳ.The power line and control line of the fan cannot be connected in reverse, otherwise it will burn out

Ⅴ.Because of the soft start characteristics of the fan, to prevent personal injury, do not touch the impeller or other parts of the fan during powered on or running at low speeds

Ⅵ.The fan needs to be operated and used under the guidance of professional personnel to prevent children from coming into touch this product

Ⅶ.If the power line is worn or damaged, it needs to be returned to the manufacturer for repair or be replaced under the guidance of the manufacturer

Ⅷ.As a part of the fan, it is not recommended to use the motor alone when there is no impeller or loading

1. High Efficiency: The FK3G280-4AAB-67 delivers 3656.1 m3/h at 1158 Pa while drawing only 700W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 280mm galvanized steel sheet impeller resists corrosion, wear and high temperatures, making the fan suitable for harsh industrial environments and corrosive gas streams.

3. Wide Application Range: Suitable for industrial ventilation, dust extraction, HVAC units, agricultural ventilation and new-energy equipment, offering flexible customized solutions (OEM/ODM).

4. Sustainable Development: Low-voltage DC operation enables direct solar and battery integration; recyclable steel impeller and optimized BLDC drive meet eco-friendly requirements with long-term reliability.

5. Easy Installation and Maintenance: Compact 280mm footprint, 0-10VDC/PWM speed control, FG tach output and standard cable make the fan simple to wire, control and service.

Q1:What kind of payments do you support?

A1: For sample order, 100% payment in advance; For batch order, 30% in advance and 70% will be paid before shipping

Q2.Will you provide samples?

A2: Sample is available and can be delivered within 10days

Q3:How can I choose a more suitable model?

A3: We need the information like fan type, quantity, size, material, voltage, air flow and static pressure.

Q4:How can I place the order?

A4:  Usually quote you within 24 hours  after  we get your inquiry. First sign the PI,pay deposit,then we will arrange the production.After finished production need you pay balance. Finally we will ship the Goods.

Q5:About transportation

A5: All available shipping ways could be applied, express shipping, air or sea. Appointed shipping company or our own forwarders all could be used in shipment. Full-way tracking the cargos for you before the goods arrive. 

Q6:How long is the warranty period?

A6: We currently offer 3-year quality guarantee for our own products, and in response to current product problems, our company provides line support, and some customers have been able to improve their products.