FB3G280-110AL-20L Backward Curved Centrifugal Fan, 110VDC, 280mm, 2978 m3/h

This FB3G280-110AL-20L backward curved centrifugal fan is engineered to dominate high-demand industrial ventilation, delivering a massive 2978 m3/h airflow and a robust 785 Pa static pressure from a single compact unit, effectively replacing multiple smaller fans in heavy-duty systems. Running on a 110VDC power bus (operating range 60-143V), it leverages high-voltage low-current distribution to minimize line losses and enable efficient DC microgrid integration, making it a smart choice for modern industrial power architectures. The 280 mm galvanized steel impeller achieves high volume at a moderate 2850 RPM, ensuring dependable performance with reduced noise emission at just 78 dB(A). Equipped with the BLDCDC102 brushless DC motor, this fan delivers 308 W of power with exceptional efficiency and a long operational lifespan, backed by integrated electronics for variable speed control and comprehensive protection. The galvanized steel construction provides excellent durability against corrosion, wear, and moderate thermal stress, ideal for demanding industrial environments. Housed in die-cast aluminum with a 20AWG 190mm cable, this fan is built for seamless integration into HVAC, filtration, and process ventilation systems. It is suitable for high-resistance ducting, HEPA filtration banks, and multi-outlet distribution, ensuring consistent airflow where it matters most. Certified to international standards, this FANOVA model combines heavy-duty construction with smart DC technology. Choose this 110VDC centrifugal fan to upgrade your system to a cleaner, more efficient, and more reliable airflow solution.

The FB3G280-110AL-20L is a high-performance backward curved centrifugal fan engineered for industrial and commercial applications requiring substantial airflow and static pressure capabilities. At its core lies a precisely fabricated impeller with a 280 mm diameter, constructed from galvanized steel sheet. This material choice ensures superior corrosion resistance, mechanical strength, and durability against particulate abrasion, making it suitable for continuous operation in dusty or mildly corrosive industrial atmospheres. The backward curved blade geometry is optimized for aerodynamic efficiency, reducing turbulence and energy losses while maintaining a stable pressure curve across the operating range. The fan is driven by the BLDCDC102 brushless DC motor, a 102 mm rotor diameter unit designed for high torque density and low cogging. This motor delivers a rated power of 308 W at 2850 RPM, drawing 2.8 A from a nominal 110VDC supply. The wide input voltage range of 60 to 143VDC provides exceptional flexibility for integration into various DC power systems, including industrial DC microgrids, battery banks, and renewable energy installations. The high-voltage, low-current architecture minimizes power distribution losses and allows for thinner, more cost-effective cabling over long distances. The motor's electronic commutation ensures silent operation, reduced electromagnetic interference, and high efficiency across a broad speed range. For speed control, the fan accepts an external PWM or analog 0-10V signal, allowing precise modulation of airflow to match system demand. Integrated control electronics include overcurrent, overvoltage, undervoltage, and over-temperature protection, safeguarding the motor and downstream electronics. The motor bearings are sealed ball bearings with a high-temperature lithium grease, rated for an L10 life of over 50,000 hours at rated load, ensuring long-term reliability in continuous-duty applications. The fan housing and endcap are constructed from die-cast aluminum, providing a rigid, lightweight frame that dissipates heat effectively and maintains dimensional stability under thermal stress. The electrical interface is a 20AWG cable of 190 mm length, pre-wired for easy connection to the control system. The fan is rated IP44 for protection against solid objects and splashing water, suitable for indoor industrial environments. It complies with CE and RoHS directives, reflecting FANOVA's commitment to quality and environmental compliance. This model is specifically designed for applications such as high-static-pressure HVAC units, industrial ovens, agricultural ventilation, and equipment cooling where both high flow and pressure are critical.

DC Backward Curved Centrifugal Fan
Type	FB3G280-110AL-20L
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 FB3G280-110AL-20L delivers 2978 m3/h at 785 Pa while drawing only 308W, 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.