FW3G250-48PD-72 Axial Fan, 48VDC, 250mm, 1571 m3/h

When airflow, silence, and power efficiency must coexist in a single compact footprint, the FANOVA FW3G250-48PD-72 axial fan delivers an exceptional balance of high-volume movement and near-silent operation. Designed around a 48VDC BLDC motor with EC technology, this 250 mm fan generates a robust maximum airflow of 1571 m³/h while consuming only 66 W, making it a standout choice for energy-conscious ventilation systems. Its glass-fiber reinforced polypropylene impeller ensures lightweight durability and chemical resistance, while the die-cast aluminum housing adds structural integrity for long-term reliability. Operating over a wide voltage range of 36 to 57 VDC, this model integrates seamlessly with standard telecom -48VDC power architectures, enabling straightforward deployment in data centers and communication equipment. The fan produces a mere 46 dB(A) at maximum speed, falling well below typical conversation levels, which qualifies it for noise-sensitive environments such as medical laboratories, recording studios, and office HVAC units. With a maximum static pressure of 190 Pa, it handles moderately restrictive ducting and filters without compromising flow, making it versatile for both push and pull configurations. The built-in BLDC controller offers speed control via PWM or 0-10V analog signals, allowing precise airflow modulation to match real-time demand. Additionally, the fan's low power draw supports battery-backed and solar-powered installations, extending its utility to renewable energy and off-grid applications. Backed by FANOVA's OEM/ODM expertise, this model is available for custom wiring, connectors, and performance tuning to meet specific project requirements. Whether replacing multiple smaller fans or upgrading legacy AC units, the FW3G250-48PD-72 simplifies system design while delivering measurable energy savings and acoustic comfort.

The FW3G250-48PD-72 is a high-efficiency axial fan engineered by FANOVA for applications requiring substantial airflow with minimal acoustic footprint and power consumption. At its core, the fan employs a 48VDC brushless DC motor with integrated EC (electronically commutated) control, which ensures high efficiency across its operating range and eliminates the need for external motor starters or capacitors. The motor's rotor, with a diameter of 72 mm, is mated to a 250 mm impeller constructed from polypropylene reinforced with glass fiber (PP+GF). This material selection provides an excellent strength-to-weight ratio, inherent resistance to many chemicals, and low inertia for rapid speed changes. The impeller features an aerodynamic blade profile optimized for axial flow, achieving a maximum airflow of 1571 m³/h (924.5 CFM) at free-air conditions and a maximum static pressure of 190 Pa (0.76 in.wg) under blocked flow. The fan draws a nominal current of 1.38 A and a maximum power of 66 W at the rated speed of 2500 RPM, delivering an efficiency that significantly outperforms traditional AC fans in comparable sizes. Electrical input accepts a wide DC voltage range from 36 to 57 V, making it directly compatible with standard -48VDC telecom power supplies and battery systems typical of data centers and remote installations. For speed control, the fan integrates a standard interface supporting both PWM and 0-10V analog signals, enabling precise speed regulation from external controllers or building management systems. This control capability, combined with the low-power BLDC design, allows the fan to operate at partial speeds for further energy savings and reduced noise. Acoustic output is rated at 46 dB(A) at maximum speed, a level that permits deployment in quiet indoor environments without additional sound attenuation. The motor is protected against overcurrent, overvoltage, and locked-rotor conditions, and features an ingress protection rating tailored for indoor, clean-air applications. The housing is constructed from die-cast aluminum, providing excellent thermal dissipation and mechanical rigidity, while the endcaps are precision-machined to ensure concentricity and smooth rotation. The fan is equipped with a 20AWG lead cable, with options for custom lengths, connectors, or terminal blocks available through FANOVA's OEM/ODM services. Bearing selection includes high-quality dual ball bearings or sleeve bearings depending on the order configuration; ball bearings offer a rated life of over 50,000 hours at 40°C, ensuring long service intervals in continuous-duty applications. The unit is designed to operate in ambient temperatures from -20°C to +60°C, with derating at higher temperatures as per standard EC fan curves. Quality manufacturing processes include dynamic balancing of the impeller assembly to minimize vibration and extend bearing life. The FW3G250-48PD-72 is compliant with CE, RoHS, and REACH directives, and FANOVA can provide UL certification upon request for specific batch orders. This fan is ideal for telecom enclosures, energy storage systems, solar inverters, medical equipment, and HVAC air handling units where a compact, efficient, and quiet airflow solution is paramount.

DC Axial Fan
Type	FW3G250-48PD-72
Model	BLDCEC72

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 FW3G250-48PD-72 delivers 1571 m3/h at 190 Pa while drawing only 66W, 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.