FB3G280-24PL-2F Backward Curved Centrifugal Fan, 24VDC, 280mm, 2333 m3/h

Designed for high-volume air movement in tight spaces, the FB3G280-24PL-2F is a 24 VDC backward centrifugal fan that delivers an impressive 2333 m³/h maximum airflow, effectively replacing multiple smaller fans in a single, compact unit. Its low-voltage DC operation ensures safety in sensitive environments and enables direct integration with solar power, battery banks, and off-grid energy systems. The fan features a 280 mm glass-fiber reinforced polypropylene impeller that is both lightweight and corrosion-resistant, reducing rotational inertia for quieter operation while maintaining robust performance. Powered by the BLDCDC102 brushless DC motor, it consumes only 312 W at 2600 RPM, generating up to 671 Pa of static pressure to overcome duct resistance and filter loads. With a wide input range of 16–28 VDC and a rated current of 13.0 A, this model adapts to fluctuating power supplies, making it ideal for renewable energy installations. The die-cast aluminum housing ensures durability and effective heat dissipation, while the 20 AWG, 500 mm cable simplifies wiring in OEM equipment. Noise output is a moderate 78 dB(A), suitable for industrial ventilation, HVAC units, and agricultural climate control. Certified for reliable continuous duty, the fan is a practical choice for engineers seeking high airflow with low-voltage control. FANOVA's OEM/ODM customization ensures this model can be tailored to specific system requirements.

The FB3G280-24PL-2F is a high-capacity backward curved centrifugal fan engineered for demanding ventilation and HVAC applications where space is limited but airflow is critical. The impeller, measuring 280 mm in diameter, is injection-molded from polypropylene reinforced with glass fibers, offering a favorable strength-to-weight ratio that reduces centrifugal stress and noise while providing excellent resistance to moisture, chemicals, and UV degradation. This lightweight construction allows the fan to achieve high airflow with lower rotational inertia compared to metal impellers, contributing to energy efficiency and extended bearing life. The fan is driven by the BLDCDC102, a 4-pole brushless DC motor with a rotor diameter of 102 mm, designed for high torque density and precise speed control. Operating on a nominal 24 VDC supply with a wide 16–28 VDC range, the motor delivers 312 W of shaft power at a rated speed of 2600 RPM, producing a maximum airflow of 2333 m³/h and a maximum static pressure of 671 Pa. This high static pressure capability makes the fan suitable for systems with long duct runs, high-resistance filters, or multiple outlet branches. The motor incorporates electronic commutation with Hall-effect sensors, providing smooth, efficient operation and eliminating brush wear, thereby reducing maintenance needs. Speed can be adjusted via PWM or analog voltage signal (0–10 VDC), allowing for flexible integration with building management systems or custom controllers. The fan includes built-in overload, over-temperature, and reverse-polarity protection, ensuring reliable operation in harsh conditions. The housing and endcaps are made of die-cast aluminum, which dissipates heat effectively and provides structural rigidity, protecting internal components from vibration and shock. Bearings are high-quality ball bearings with a design life of 50,000 hours at rated load, ensuring long-term reliability in continuous duty cycles. The electrical interface consists of a 20 AWG, 500 mm long cable with tinned ends, ready for connection to a power source and control signal. The fan meets relevant CE and RoHS standards and is manufactured under ISO 9001 quality management. FANOVA offers OEM/ODM services, allowing customization of cable length, connectors, impeller materials, and control options to meet specific customer requirements. This model is ideal for solar-powered ventilation systems, battery-operated equipment, industrial exhaust, and high-volume air circulation in agricultural and commercial settings.

DC Backward Curved Centrifugal Fan
Type	FB3G280-24PL-2F
Model	BLDCDC102

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 FB3G280-24PL-2F delivers 2333 m3/h at 671 Pa while drawing only 312W, 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.