FW3G250-24GS-91 Axial Fan, 24VDC, 250mm, 2246.7 m3/h

When your ventilation system needs to move serious air in a 24V DC environment, the FANOVA FW3G250-24GS-91 axial fan delivers a massive 2246.7 m3/h airflow, a level typically reserved for larger AC fans, enabling you to replace multiple smaller units with a single, powerful solution. This high-volume performance makes it the cornerstone of high-density cooling in battery energy storage cabinets, telecom shelters, and solar-powered off-grid ventilation systems where space and energy efficiency are critical. At the heart of this model is a 24VDC brushless DC motor (BLDCDC92) operating across a wide 16V to 28V input range, ensuring stable performance even with fluctuating DC bus voltages common in renewable energy setups. The fan spins at 3200 RPM, generating a maximum static pressure of 350 Pa (1.4 in.wg), which is sufficient to overcome the resistance of dust filters and moderate-length ducting. Its galvanized steel sheet impeller, measuring 250mm in diameter, is engineered for industrial durability, resisting corrosion and mechanical wear far better than plastic alternatives in harsh environments. With a power consumption of just 136W at 5.7A, this fan offers an excellent airflow-to-power ratio, reducing the load on your battery or solar array. The die-cast aluminum housing provides robust structural integrity and effective heat dissipation, ensuring long-term reliability in continuous-duty applications. Operating at a noise level of 74 dB(A), it is suitable for industrial settings, data centers, and agricultural facilities where background noise is less critical than raw cooling capacity. Each unit is built with high-quality ball bearings rated for an extended lifespan, and the fan includes overcurrent, overvoltage, and reverse polarity protection for safe integration into your system. FANOVA, as a leading Chinese OEM/ODM manufacturer, offers this model with customizable cable lengths and connectors, plus certifications including CE and RoHS, making it a plug-and-play choice for global equipment builders. Whether you are designing a high-volume ventilation system for an energy storage plant or upgrading an existing DC-powered cooling loop, this fan simplifies your design with one robust, high-performance component.

The FANOVA FW3G250-24GS-91 is a high-performance axial fan meticulously engineered for demanding 24VDC applications that require exceptional volumetric flow without sacrificing durability. Its impeller is fabricated from high-grade galvanized steel sheet, a material choice that provides superior resistance to corrosion, abrasion, and thermal deformation compared to polymer alternatives, ensuring the fan maintains its aerodynamic profile and balance over thousands of operating hours in dusty, humid, or chemically reactive industrial atmospheres. The 250mm diameter impeller features a precision-stamped blade geometry optimized for high static efficiency, allowing the fan to deliver a maximum airflow of 2246.7 m3/h (1322.2 CFM) while achieving a peak static pressure of 350 Pa (1.4 in.wg) at 3200 RPM. The motor is a BLDCDC92 type, a sensorless brushless DC motor with an internal electronic commutation controller that eliminates brush wear and electromagnetic interference, providing a maintenance-free service life. The motor is designed to operate over a wide input voltage envelope of 16V to 28VDC, making it exceptionally tolerant of voltage sag in battery-discharge scenarios or overvoltage conditions from solar charge controllers. At its nominal 24VDC operating point, the fan draws 5.7A and consumes 136W of electrical power, translating into a highly efficient airflow-per-watt ratio that is critical for extending battery runtime in off-grid and backup systems. Speed control is achieved via an integrated PWM input (duty-cycle controlled) and a tachometer output (open-collector, 2 pulses per revolution), allowing host systems to implement closed-loop thermal management or fan-health monitoring. The fan also supports a soft-start function that limits inrush current to prevent stress on DC power supplies and relay contacts. Protection features are comprehensive: the electronics include reverse polarity protection, overcurrent limiting, and lock-rotor auto-restart with a thermal cutoff to prevent motor burnout under stalled conditions. The motor windings are insulated to Class B standards, and the entire assembly is sealed to meet IP54 ingress protection (with optional IP55 upgrade), guarding against dust and water splashes in outdoor enclosures. Mechanical construction is heavy-duty: the endcaps and housing are made of die-cast aluminum alloy, providing a rigid frame that minimizes vibration and enhances heat conduction away from the stator. The rotor diameter is 92mm, and the fan uses dual high-temperature, low-noise ball bearings with an L10 life expectancy exceeding 50,000 hours at 50 degrees Celsius ambient temperature, ensuring years of uninterrupted service. Electrical connection is via three 20AWG leads (red: +VDC, black: GND, yellow: tach/PWM), with a standard wire length of 300mm, though FANOVA can customize cable gauges, connectors (e.g., JST, Molex), and lead lengths to match your BOM. The fan is manufactured under ISO9001 quality management and comes with CE, RoHS, and REACH certifications, making it compliant for export to North America, Europe, and Asia. For OEMs integrating this fan into battery racks, converter cabinets, or agricultural climate systems, the FW3G250-24GS-91 offers a robust, high-flow solution that simplifies system design by reducing fan count and wiring complexity. FANOVA also provides optional accessory kits including finger guards, filter screens, and custom mounting brackets, with low MOQ for global shipping.

DC Axial Fan
Type	FW3G250-24GS-91
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 FW3G250-24GS-91 delivers 2246.7 m3/h at 350 Pa while drawing only 136W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 250mm 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 250mm 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.