FG3G500-48PL-21 Axial Fan, 48VDC, 500mm, 8548.3 m3/h

The FG3G500-48PL-21 axial fan redefines high-volume ventilation in a 48VDC platform, delivering a massive 8548.3 m3/h of airflow while maintaining a whisper-quiet 61.5 dB(A) acoustic signature—perfectly suited for environments where both performance and peace are non-negotiable. This model leverages a 500mm glass-fiber reinforced polypropylene impeller to move air efficiently at a low 1520 RPM, ensuring long service life and reduced wear on moving parts. Powered by a sensorless brushless DC motor (BLDCDC102) rated at 398.4W and 8.3A, it operates across a wide 36~57V input range, making it ideal for telecom -48VDC power plants, solar DC microgrids, and battery-backed HVAC systems. The fan generates up to 175.3 Pa of static pressure, sufficient to overcome duct resistance in medium-length runs or lightly loaded filtration systems. Die-cast aluminum endcaps and housing provide robust heat dissipation and structural integrity, while the 18AWG, 135mm cable simplifies integration into existing control cabinets. With IP-rated protection options and low-vibration operation, this fan is a drop-in upgrade for OEMs seeking to replace multiple smaller units with one powerful, energy-efficient solution. Certified for global markets and backed by FANOVA's engineering support, the FG3G500-48PL-21 is the smart choice for data center cooling, agricultural ventilation, and industrial air movement. Its combination of high airflow, low noise, and DC flexibility makes it a standout in the 500mm axial fan category.

The FG3G500-48PL-21 is a 48-volt DC axial fan engineered for demanding airflow applications where space, energy efficiency, and acoustic comfort are critical. At its core is a 500mm impeller fabricated from polypropylene reinforced with glass fiber, a material selection that balances lightweight construction with excellent resistance to chemical corrosion, moisture absorption, and fatigue over extended operational cycles. The impeller features a precision-designed blade geometry—typically 7 to 9 blades in a swept configuration—optimized to maximize volumetric flow at low rotational speeds, thereby minimizing turbulence-induced noise and mechanical stress. The rotor, with a diameter of 102mm, is directly coupled to a sensorless brushless DC motor (model BLDCDC102) that eliminates the need for external drive electronics, reducing component count and improving system reliability. The motor's electrical design supports a nominal voltage of 48VDC with a permissible input range of 36 to 57VDC, allowing seamless operation from standard telecom rectifiers, battery banks, or renewable energy DC buses. At the rated operating point of 1520 RPM, the fan consumes 398.4W at 8.3A, producing a maximum airflow of 8548.3 m3/h (5030.7 CFM) and a maximum static pressure of 175.3 Pa (0.7 inch of water). The speed-current relationship is linear, enabling straightforward speed control via PWM or variable DC voltage commands from a host controller. For advanced integration, the fan can be configured with tachometer output (FG) or locked rotor alarm (RD) signals, providing real-time status feedback for DCIM or SCADA systems. The housing is constructed from die-cast aluminum, chosen for its high thermal conductivity and dimensional stability; this not only dissipates heat generated by the motor windings but also anchors the fan securely in tight mounting frames. Internally, the fan is equipped with dual ball bearings rated for a minimum service life of 50,000 hours at 50°C ambient temperature, with options for high-temperature or sealed bearings available upon request. The electrical interface consists of a 135mm long, 18AWG lead wire, terminated with bare leads or optional connectors to match customer-specific plugs. Protection features include reverse polarity protection, overcurrent shutdown, and locked-rotor protection, all embedded in the motor's control ASIC. The fan meets IP54 ingress protection as standard (IP55 optional with sealed wiring), making it suitable for dusty or splash-prone environments. Vibration levels are controlled to ISO 1940-1 Grade 4.0, ensuring smooth operation when mounted on standard duct flanges. The entire assembly is RoHS-compliant and manufactured under ISO 9001 quality management systems, with CE, UL, and CCC certifications available for global deployment. For OEMs, FANOVA provides custom speed settings, connector types, and wire length options, enabling a tailored fit for each application. Whether used in fresh air handling units, condenser cooling, or battery energy storage cabinets, the FG3G500-48PL-21 delivers consistent, efficient airflow with minimal acoustic impact, making it a superior alternative to high-speed AC fans in retrofit projects.

DC Axial Fan
Type	FG3G500-48PL-21
Model	BLDCDC102

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 FG3G500-48PL-21 delivers 8548.3 m3/h at 175.3 Pa while drawing only 398.4W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 500mm 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 500mm 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.