FB3G310-24AL-90 Backward Curved Centrifugal Fan, 24VDC, 310mm, 2458 m3/h

When your ventilation system needs to move serious air without the complexity of AC wiring, the FANOVA FB3G310-24AL-90 delivers a powerful 2458 m³/h maximum airflow on a safe 24VDC supply. This backward centrifugal fan replaces multiple smaller units, simplifying your equipment layout and cutting installation costs. Its 310mm die-cast aluminum impeller produces high volume at a modest 1750 RPM, keeping operational noise to just 66.4 dB(A) while maximizing efficiency. The brushless DC motor, rated at 145.2W and 6.05A, offers long service life and precise speed control across a 16 to 28V input range. Designed for low-voltage environments, it is ideal for solar-powered systems, off-grid cabinets, and new energy applications where safety and reliability are paramount. With a maximum static pressure of 426 Pa, it handles duct resistance and filter loading with ease. The all-aluminum construction ensures excellent heat dissipation and corrosion resistance, suitable for demanding industrial settings. Backed by FANOVA's OEM/ODM expertise, this fan is available with custom cables, connectors, and control options to fit your exact needs. Trust the FB3G310-24AL-90 for robust, maintenance-friendly ventilation in telecom, battery storage, and agricultural equipment.

The FB3G310-24AL-90 is a high-capacity backward centrifugal fan engineered for systems requiring substantial airflow at low voltage. At its core is a 310mm diameter impeller constructed from die-cast aluminum alloy, featuring a carefully designed blade profile that optimizes aerodynamic efficiency and reduces turbulence. This large-diameter design allows the fan to achieve a maximum airflow of 2458 m³/h (1348.8 CFM) while rotating at a relatively low speed of 1750 RPM, contributing to quieter operation and reduced mechanical stress. The impeller's aluminum alloy material provides excellent structural integrity, high thermal conductivity, and resistance to corrosion, making it suitable for harsh environments and continuous duty cycles.

The fan is driven by a FANOVA BLDCDC92 brushless DC motor, which delivers 145.2W of power at 24VDC with a nominal current draw of 6.05A. The motor operates over a wide input voltage range of 16 to 28VDC, allowing for flexible integration with various power sources, including battery banks, solar panel systems, and DC bus architectures. The brushless design eliminates brush wear, extends the motor's lifespan, and enables precise electronic speed control. Users can modulate airflow by varying the DC input voltage or utilizing PWM signals, depending on the selected control interface. The motor's electronic commutation ensures high efficiency across the operating range, reducing energy consumption compared to traditional AC fans with similar output.

Mechanically, the end caps and housing are also fabricated from die-cast aluminum, providing a rigid, lightweight frame that effectively dissipates motor heat. The fan is equipped with high-quality ball bearings rated for a service life exceeding 50,000 hours at normal operating temperatures, ensuring long-term reliability in demanding applications. The electrical interface consists of a 20AWG cable with a standard length of 150mm, allowing for straightforward connection to control boards or power supplies; custom cable lengths and connector types are available upon request for OEM projects. The fan's ingress protection and insulation class are designed for indoor or sheltered outdoor use, with options for enhanced protection on special order. Compliance with CE and RoHS standards is standard, and the fan is built under strict ISO quality management protocols. This model is particularly suited for battery energy storage systems (BESS), telecom enclosures, off-grid inverters, and industrial ventilation where 24VDC power is readily available and high airflow is a priority.

DC Backward Curved Centrifugal Fan
Type	FB3G310-24AL-90
Model	BLDCDC92

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 FB3G310-24AL-90 delivers 2458 m3/h at 426 Pa while drawing only 145.2W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 310mm 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 310mm 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.