FB3G280-2AGL-91 Backward Curved Centrifugal Fan, 230VAC, 280mm, 1819.6 m3/h

The FB3G280-2AGL-91 is a high-capacity backward centrifugal fan engineered to replace multiple smaller fans with a single, compact unit. Delivering a maximum airflow of 1819.6 m3/h, this model excels in demanding HVAC and ventilation systems where space is at a premium. Its 280 mm galvanized steel impeller achieves substantial volume at a modest 2200 RPM, ensuring durable performance and reduced operational noise. Powered by a 230VAC BLDC EC motor with a wide input range of 184 to 277 volts, the fan offers plug-and-play operation for straightforward AC retrofit projects. The motor consumes only 120 W at full speed, translating to significant energy savings over traditional AC solutions. With a maximum static pressure of 501 Pa, it effectively overcomes duct resistance and filter loading, making it suitable for extended duct networks. The die-cast aluminum housing provides rugged protection for industrial environments, while the integrated speed control interface allows for precise airflow modulation. Backed by FANOVA's OEM expertise, this fan is an ideal choice for OEMs seeking a reliable, high-volume air movement solution with modern EC efficiency and simple installation. Its robust construction and balanced performance make it a versatile component for commercial air handling units, heat recovery systems, and cleanroom applications. Choose the FB3G280-2AGL-91 for a streamlined, cost-effective approach to high-volume air delivery.

The FANOVA FB3G280-2AGL-91 represents a class-leading fusion of high-volume airflow and EC motor efficiency, purpose-built for OEM systems requiring maximum air movement with minimal footprint. At its core is a 280 mm backward-curved impeller fabricated from high-quality galvanized steel sheet, a material choice that confers exceptional corrosion resistance, mechanical strength, and dimensional stability even under continuous thermal cycling. The impeller's aerodynamic blade profile, with a precisely calculated blade count, minimizes turbulence and aerodynamic losses, enabling a peak airflow of 1819.6 m3/h (1070.8 CFM) while generating a maximum static pressure of 501 Pa (2.004 In.wg). This pressure capability is sufficient to overcome the resistance of long duct runs, multiple bends, and moderately loaded filters, ensuring consistent performance in real-world installations. The fan is driven by an integrated BLDC EC motor operating on a 230VAC supply with a wide tolerance of 184 to 277 volts, facilitating stable operation across varying grid conditions. The motor delivers 120 W of shaft power at a rated speed of 2200 RPM, drawing a current of just 0.55 A. This EC technology provides inherent speed control via a standard 0-10V PWM interface, allowing the system controller to modulate airflow precisely between 0 and 100% without external inverters or phase-control devices. The motor's electronics are fully encapsulated and feature thermal overload protection, locked-rotor protection, and automatic restart functionality, ensuring robust operation in harsh environments. The rotor, with a diameter of 92 mm, is statically and dynamically balanced to Grade G2.5, guaranteeing vibration-free operation and extended bearing life; the maintenance-free ball bearings are rated for a service life exceeding 40,000 hours at rated conditions. The housing and endcaps are constructed from die-cast aluminum, offering excellent heat dissipation, dimensional rigidity, and protection against dust and moisture. The electrical interface consists of a 20AWG cable with a length of 118 mm, terminated with a user-friendly connector for rapid integration into OEM electronics. The fan is certified to CE, UL, and RoHS standards, and its insulation class is B, with a protection rating of IP44 for the motor assembly. Every unit undergoes a 100% run-in test to verify airflow, pressure, and noise performance, ensuring consistent quality. With its combination of high-volume airflow, rugged steel impeller, and efficient EC drive, the FB3G280-2AGL-91 is an optimal choice for OEMs targeting energy-efficient ventilation, air conditioning, and industrial process cooling applications.

DC Backward Curved Centrifugal Fan
Type	FB3G280-2AGL-91
Model	BLDCEC92

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 FB3G280-2AGL-91 delivers 1819.6 m3/h at 501 Pa while drawing only 120W, 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.