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
This 280 mm impeller backward centrifugal fan is engineered for low-voltage DC applications where safety and reliability are non-negotiable, making it a superior choice for solar-powered ventilation, off-grid energy systems, and new energy equipment. The FB3G280-24GY-90 operates on a 24 VDC input with a wide 16 to 28 V range, drawing just 5.8 A at 139.2 W to deliver a robust static pressure of 440 Pa, ensuring consistent airflow through ducted systems and restrictive filters. Its large 280 mm galvanized steel impeller achieves high airflow at a low 1940 RPM, which significantly reduces operational noise to 71 dB(A) while extending bearing life and mechanical durability. The brushless DC motor, model BLDCDC92, offers exceptional energy efficiency compared to traditional AC fans, converting more electrical input into usable airflow with less heat generation. This fan is designed with die-cast aluminum housing for excellent heat dissipation and structural integrity, while the galvanized steel impeller provides corrosion resistance and wear tolerance in demanding industrial environments. Speed control is available through PWM or voltage regulation, allowing system integrators to fine-tune performance to match varying load conditions. Protection features include reverse polarity, overcurrent, and locked-rotor safeguards, complemented by Class B insulation for dependable operation in temperatures up to 70°C. Whether used in telecommunications shelters, battery storage enclosures, or agricultural ventilation, this fan is certified with CE and RoHS, ensuring compliance with international standards. FANOVA's FB3G280-24GY-90 represents a low-voltage, high-reliability solution that simplifies system design by eliminating high-voltage wiring risks and reducing installation complexity.
The FB3G280-24GY-90 is a backward-curved centrifugal fan meticulously designed for 24 VDC applications, offering a blend of high static pressure capability and low-speed acoustic performance that is rare in compact industrial fans. The impeller, fabricated from galvanized steel sheet, features a diameter of 280 mm with backward-inclined blades that optimize aerodynamic efficiency, reducing turbulence and energy loss during air movement. This blade geometry, combined with a tight clearance between the impeller and the die-cast aluminum housing, enables the fan to achieve a maximum static pressure of 440 Pa (1.76 in-wg) at 1940 RPM, making it suitable for systems with long duct runs or high-resistance components like HEPA pre-filters. The die-cast aluminum endcaps and housing ensure dimensional stability under thermal stress and provide a rigid mounting structure that minimizes vibration transmission, which is critical for long-term bearing health. The integrated brushless DC motor, designated BLDCDC92, utilizes a 92 mm rotor diameter with electronic commutation for silent, maintenance-free operation. This motor architecture eliminates brush wear and sparking, extending service life to over 50,000 hours under normal operating conditions. Speed control is achieved via a 0-10 V analog signal or a PWM input with a frequency range of 100 Hz to 10 kHz, allowing precise modulation of airflow from 0 to maximum capacity, which is essential for energy-saving variable-air-volume systems. The motor driver incorporates comprehensive electronic protections including undervoltage lockout (UVLO) at 16 V, overvoltage clamping at 28 V, overcurrent limiting, and stall detection with automatic restart, ensuring robust operation in unstable power environments common in solar or battery-backed installations. Electrically, the fan draws a maximum current of 5.8 A and consumes 139.2 W at full speed, with a power factor correction circuit that maintains efficiency above 85% across the operational range. The electrical interface consists of three 20 AWG wires with a length of 125 mm, color-coded for power, ground, and control signal, terminated with a connector that matches standard JST or Molex headers for easy integration. The bearings are sealed dual-ball types, pre-lubricated with high-temperature grease, and designed to operate in ambient temperatures from -20°C to +70°C, with the motor insulation rated Class B to withstand thermal stress. The fan housing has an IP44 ingress protection rating on the electrical side and IP20 on the inlet, providing adequate protection against dust and splashing water for most indoor and sheltered outdoor installations. Each unit undergoes a 100% factory test for air performance, noise, and vibration, and is certified to CE, RoHS, and REACH standards, ensuring product safety and environmental compliance for global distribution. With its low-voltage architecture, this fan is ideal for integration into DC microgrids, telecommunications base stations, and renewable energy storage systems where 24 VDC is the standard bus voltage, offering a plug-and-play solution that reduces conversion losses and enhances system reliability. FANOVA as an OEM/ODM manufacturer provides customization options for cable length, connectors, and speed control curves, enabling tailored solutions for unique application requirements.
| 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.
