EN
FB3G280-24GY-90
| Nominal Voltage | VDC | 24 |
| Current draw | A | 5.8±10% |
| Speed(RPM) | min-1 | 1940±5% |
| Power consumption | W | 139.2±10% |
| Max. Air Flow | CFM / m3 /H | 1288.8/2190 |
| Max. Static Pressure | In.wg /Pa | 1.76/440 |
50pcs
The FANOVA FB3G280-24GY-90 is a 280mm backward curved centrifugal fan built around a galvanized steel sheet impeller, engineered specifically for industrial ventilation systems where ordinary plastic-impeller fans fail. Its eleven backward-curved blades are pressed from corrosion-resistant galvanized steel, allowing the fan to handle dust-laden air, humidity, and mildly corrosive gas streams that would quickly degrade standard blowers. Powered by a 24VDC brushless DC motor rated at 139.2W, the unit delivers up to 2190 m3/h of airflow against a maximum static pressure of 440 Pa, all while drawing current below 5.8A and keeping sound pressure at 71dB(A). This low-power DC architecture not only trims energy bills compared with equivalent AC blowers, but also enables direct operation from solar panels, batteries, and other low-voltage renewable sources — a decisive advantage for off-grid and new-energy equipment. The motor integrates a sealed electronics module with 0-10VDC and PWM speed control inputs plus an FG tachometer output, giving the system engineer precise speed regulation and live feedback for closed-loop control. Insulation is Class B, the degree of protection reaches IP44 against dust and water splashes, and ball bearings with an L10 life expectancy support continuous 24/7 duty. A die-cast aluminum endcap and hub assembly completes the robust construction, ensuring stable rotor alignment and long-term mechanical integrity under vibration. Applications span industrial workshop ventilation, dust extraction systems, HVAC air-handling units, agricultural climate control, electrical cabinet cooling, and new-energy battery pack ventilation. Every FB3G280-24GY-90 leaves the FANOVA factory certified to CE and RoHS, backed by ISO9001 quality management, and available for OEM/ODM customization of cable length, connector, and control protocol.
Product Specification
Impeller Construction: The FB3G280-24GY-90 employs a galvanized steel sheet impeller with eleven backward-curved blades, a geometry selected to maximize pressure generation at moderate rotational speeds while keeping tangential noise low. Galvanized steel offers substantially higher mechanical strength and wear resistance than injection-molded plastic impellers, and its zinc coating forms a sacrificial barrier against corrosion, enabling the fan to survive in humid, dusty, and mildly acidic environments. The 280mm outer diameter impeller is dynamically balanced to ISO 1940 G6.3, keeping vibration amplitudes minimal across the entire 0 to 1940 RPM operating envelope.
Motor Technology: Powering the impeller is a FANOVA BLDC92 brushless DC motor — a 92mm rotor-diameter unit with a sensorless permanent-magnet synchronous drive. The integrated electronic commutation eliminates brush wear and sparking, yielding electrical efficiencies of 85% or better at the design point. Nominal ratings are 24VDC input over an operating voltage range of 16 to 28VDC, 5.8A typical current draw, 139.2W power consumption, and a 1940 RPM free-running speed, each parameter held within the production tolerances printed on the nameplate. Rated data is obtained under the specified environmental conditions and installation mode described in the test condition notes.
Speed Control and Monitoring: Two industry-standard control interfaces are built in: a 0-10VDC analog input and a PWM input, both adjustable to realize continuous speed modulation from soft start up to full speed. The fan simultaneously outputs an FG tachometer signal (three pulses per revolution) so the host controller can monitor actual shaft speed and detect stall or bearing failure early. The conventional control mode is 0-10V/PWM; alternative communication protocols can be supplied on request through the technical team. The power line and control line must never be reversed, as reverse connection can permanently damage the electronics.
Electrical and Thermal Ratings: Insulation class B (130°C) protects the motor windings, and the degree of protection is IP44, guarding the electronics enclosure against dust ingress and splashing water. The drive stage incorporates overcurrent, overvoltage, undervoltage, and reverse-polarity protection to shield the fan during transient supply events. Thermal design keeps the controller heatsink temperature within the Class B limit across the full voltage and speed range, supporting continuous S1 duty operation.
Bearing and Mechanical: A high-quality ball bearing system at both ends provides an L10 rated life of 30,000 hours at rated load and 40°C ambient, enabling round-the-clock operation in ventilation duty. The endcap and hub are die-cast aluminum, providing stable rotor seating, good heat conduction away from the stator, and protection against environmental corrosion. The fan may be installed in any orientation — horizontal, vertical, or ceiling-mounted — without affecting lubrication or performance.
Electrical Interface: The 24GY-90 is supplied with 20AWG leads for both power and control connections, with a standard cable length of 125mm as shown in the connection diagram. Custom cable lengths, pre-crimped connectors, and waterproof cable glands are available as OEM options. All leads are color-coded per the wiring schematic in the connection diagram section.
Certification and Quality: Production is carried out under ISO9001 quality management, and the fan carries CE and RoHS certification. Each unit is 100% electrically tested for winding continuity, insulation resistance, and no-load current before dispatch.
| DC Backward Curved Centrifugal Fan |  |
|
| Type | FB3G280-24GY-90 | |
| Model | BLDCDC92 | |
| Nominal Voltage | VDC | 24 |
| Voltage range | VDC | 16~28 |
| Current draw | A | 5.8±10% |
| Speed(RPM) | min-1 | 1940±5% |
| Power consumption | W | 139.2±10% |
| Sound Pressure Level | dB(A） | 71±5% |
| Max. Air Flow | CFM / m3 /H | 1288.8/2190 |
| Max. Static Pressure | In.wg /Pa | 1.76/440 |
| Insulation class | ~ | Class B |
| Degree of protection | ~ | IP44 |
| Control Input | ~ | 0~10VDC / PWM |
| Signal Output | ~ | FG (Tach output ) |
Remarks：
Ⅰ. Standard cable length Refer to the figure below. The length of cable can be customized
Ⅱ. Conventional mode is 0-10V/PWM control, can optionally replace the communication protocol, detailed communication protocol, please contact technical personnel
Test condition：
Ⅰ.The test data is obtained under the specified environment conditions and installation mode
Ⅱ.Input Voltage---Operating voltage
Ⅲ.Temperature---Room temperature 25℃
Ⅴ.Humidity---65%RH
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 FB3G280-24GY-90 delivers 2190 m3/h at 440 Pa while drawing only 139.2W, 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.
