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

When your telecom or data-center cooling design demands a single fan that can move a torrent of air while sipping power, the FANOVA FW3G250-48PD-72 axial fan redefines efficiency. This 48 VDC unit delivers a remarkable maximum airflow of 1571 m³/h (924.5 CFM) at just 66 W of power consumption, a combination that allows engineers to replace multiple smaller fans with one quiet, high-volume solution. Operating at a whisper-quiet 46 dB(A), it is quieter than a normal conversation, making it ideal for noise-sensitive environments like medical devices, clean labs, and office HVAC systems. The FW3G250-48PD-72 is engineered for the standard -48 VDC telecom bus, enabling seamless integration into DCIM (Data Center Infrastructure Management) systems without the need for AC-to-DC conversion. Its glass-fiber reinforced polypropylene impeller (250 mm diameter) is lightweight yet chemically resistant, while the die-cast aluminum housing ensures robust heat dissipation and structural integrity. This BLDC EC motor runs at 2500 RPM and generates a maximum static pressure of 190 Pa (0.76 in.wg), sufficient for pulling air through moderately restrictive filters or ductwork. With a wide voltage range of 36 to 57 VDC and a current draw of only 1.38 A, it is perfect for battery-backed or solar-powered installations. Built for longevity, it features premium ball bearings rated for long service life, and the motor is fully protected with auto-restart, reverse polarity, and over-current safeguards. Certified to CE and UL standards, this fan is a drop-in choice for OEMs seeking energy-efficient, low-noise axial flow for telecom racks, energy storage systems, and precision ventilation. FANOVA supplies this model as a custom OEM/ODM solution, with flexible cable lengths and connector options tailored to your assembly line. Choose the FW3G250-48PD-72 to cut your cooling energy budget and acoustic footprint in one decisive move.

The FANOVA FW3G250-48PD-72 is a high-performance axial fan purpose-built for 48 VDC distributed power architectures, where energy efficiency and acoustic comfort are non-negotiable. At the heart of the unit is a 250 mm diameter impeller molded from glass-fiber reinforced polypropylene, a material choice that delivers an exceptional strength-to-weight ratio, inherent resistance to many chemicals and moisture, and a low rotational inertia for rapid speed response. The seven-blade aerodynamically optimized design is paired with a die-cast aluminum endcap and housing, which not only protects the motor core but also acts as a heat sink to keep winding temperatures low during continuous duty. The brushless DC (BLDC) motor with EC (Electronically Commutated) technology operates on a nominal 48 VDC supply, with a wide input range of 36 to 57 VDC to accommodate battery voltage sag or float charging conditions, making it suitable for telecom -48 V plants and renewable energy DC buses. The motor draws a nominal current of 1.38 A and consumes only 66 W at the rated speed of 2500 RPM, yet it is capable of producing up to 1571 m³/h of free-air flow. Against system impedance, the fan generates a maximum static pressure of 190 Pa, which is sufficient to overcome the resistance of fine dust filters, heat exchanger coils, or long duct runs in enclosure cooling. Speed control is achieved via a PWM signal or variable DC voltage input (depending on wiring configuration), allowing precise thermal management through external controllers or DCIM software. The fan is equipped with a 20 AWG lead wire cable (standard length available on request), with options for custom connectors, pinouts, and cable lengths to match your harness design. Electrical protection is comprehensive, including reverse polarity protection, locked-rotor auto-restart, over-current limiting, and over-temperature shutdown, ensuring fail-safe operation in redundant arrays. The motor is insulated to Class B, and the entire assembly is rated IP44 (with optional IP55 upgrades), guarding against dust ingress and incidental water splashes. Bearings are premium ball bearings with a rated L10 life of over 50,000 hours at 40°C ambient, providing long-term reliability in continuous-duty applications such as telecom base stations, IT server racks, energy storage inverters, and medical imaging equipment. The fan is balanced to ISO 1940 G2.5 grade, minimizing vibration and bearing wear even at high speeds. Production quality is backed by FANOVA's ISO9001-certified facility, and each unit is tested for airflow, current, and noise before shipment. The FW3G250-48PD-72 complies with CE (LVD and EMC) and UL 507 standards, and RoHS/REACH environmental directives are fully met. For OEMs integrating this fan into battery-powered equipment, the ultra-low power draw of 66 W extends runtime and reduces heat load, while the 46 dB(A) noise level allows placement in occupied spaces. Whether you are designing a high-density server enclosure, a photovoltaic inverter cooling system, or a hospital ventilation unit, this fan offers a clean, modular, and serviceable solution. FANOVA also provides full customization of the housing mounting holes, impeller color, and lead wire termination to streamline your final assembly process.

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.