FG3G400-48PL-20 EC Axial Fan with Guard Grille, 48VDC, 400mm, 4730 m3/h

The FG3G400-48PL-20 is a 48VDC large-format EC axial fan with an integrated safety guard grille, purpose-built for high-volume air movement in telecom and industrial DC applications. Featuring a 400mm impeller driven by the BLDC102 brushless motor, it delivers an exceptional 4730 m³/h airflow at 225 Pa static pressure while consuming just 274W at 1400 RPM. The axial design provides optimal efficiency for low-pressure, high-volume ventilation — ideal for air exchange, cabinet cooling, and condenser airflow applications. Drawing 5.7A across its 48VDC input range, it integrates seamlessly with telecom -48VDC plants and industrial DC bus systems. The built-in finger guard grille meets safety standards while allowing unrestricted airflow. With integrated FG tach output and compatibility with 0-10VDC analog and PWM control, it enables precision speed regulation for variable-air-volume DC ventilation. IP44-rated with Class B insulation and 50,000-hour L10 service life, this fan is engineered for continuous-duty operation. Ideal for telecom shelter air exchange, data center hot-aisle ventilation, DC microgrid equipment cooling, transformer and rectifier cooling, and large-scale industrial enclosure ventilation. CE and RoHS certified.

At the core of the FG3G400-48PL-20 is a BLDC102 external rotor brushless DC motor directly driving a 400mm axial impeller at 1400 RPM. The axial aerodynamic design maximizes airflow-to-power ratio, converting 274W of 48VDC power into 4730 m³/h at 225 Pa — moving 17.3 m³/h per watt for exceptional air-moving efficiency. The 400mm diameter provides a large swept area, enabling high-volume air exchange with low outlet velocity for reduced duct noise and turbulence. The motor draws 5.7A across its 48VDC operating range, ensuring compatibility with standard telecom -48VDC plants and industrial DC bus systems. Comprehensive control accepts 0-10VDC analog signals and PWM (1-10kHz) digital inputs for stepless speed regulation, while the FG tachometer output delivers real-time RPM feedback for closed-loop DCIM and BMS integration. Built-in protection includes soft-start, current limiting, locked-rotor protection, over-temperature protection, and reverse polarity protection. The fan features a die-cast aluminum housing with integrated safety guard grille, IP44-rated sealing, ball bearings for any mounting orientation, and Class B insulation to 130°C ambient. Rated for 50,000 hours L10 lifespan at 40°C, this axial fan is the optimal choice for 48VDC high-volume low-pressure ventilation where maximum air exchange is the primary design objective.

EC Axial Fan with Guard Grille
Type	FG3G400-48PL-20
Model	BLDC102

Remarks:

I. Standard lead wire length is 300mm; customized length available upon request.

II. Control via 0-10VDC analog signal or PWM digital signal.

Test condition:

I. Measurement performed according to ISO 5801, using double chamber method.

II. Test voltage: 48VDC, ambient temperature: 23±2°C, relative humidity: 50±10%.

III. Noise measured at 1m distance in anechoic chamber per ISO 3744.

IV. PQ curve shows performance across 0-100% duty cycle at rated voltage.

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. 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

V. The fan needs to be operated and used under the guidance of professional personnel to prevent children from coming into touch this product

VI. 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

VII. As a part of the fan, it is not recommended to use the motor alone when there is no impeller or loading

1. Massive 4730 m³/h Axial Airflow: The FG3G400-48PL-20 delivers an exceptional 4730 m³/h at 225 Pa on 48VDC — powered by the BLDC102 motor at just 274W. The 400mm axial design provides optimal high-volume low-pressure ventilation for air exchange and cooling applications.

2. High-Efficiency Axial Aerodynamics: Moving 17.3 m³/h per watt at 1400 RPM with 75-80% efficiency — 30-40% energy savings versus AC axial fans. The large 400mm swept area achieves high airflow with low outlet velocity for reduced duct noise.

3. Integrated Safety Guard Grille: Built-in finger guard grille meets safety standards while maintaining unrestricted airflow. Ready for direct installation without additional guarding — ideal for accessible equipment enclosures.

4. Telecom & Industrial DC Cooling: Purpose-built for telecom shelter air exchange, data center hot-aisle ventilation, transformer/rectifier cooling, DC microgrid equipment enclosures, and large-scale battery storage ventilation. OEM/ODM available.

5. Reliable & Maintenance-Free: Die-cast aluminum IP44 housing, ball bearings, 50,000-hour L10 lifespan, any-orientation mounting, 0-10VDC/PWM plus FG tach, and 3-year warranty.

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 7 days for standard models

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.