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FB3G310-48AY-21
Fanova
Nominal Voltage | VDC | 48 |
Nominal voltage range | VDC | 36~57 |
Current draw | A | 7.0±10% |
Speed(RPM) | min-1 | 2220±5% |
Power consumption | W | 336±10% |
Sound Pressure Level | dB(A) | 69±5% |
Max. Air Flow | CFM / m3/H | 1777.27/3020 |
Max. Static Pressure | In.wg /Pa | 2.66/665 |
Insulation class | ~ | Class B |
Degree of protection | ~ | IP44 |
Control Input | ~ | 0~10VDC / PWM |
Signal Output | ~ | FG (Tach output ) |
The FB3G310-48AY-21 is a high-pressure DC centrifugal fan engineered for demanding ventilation and cooling tasks. Featuring a robust 310mm aluminum impeller and backward-curved blades, it delivers exceptional static pressure (up to 665 Pa) while maintaining energy efficiency. Designed for industrial and commercial use, its brushless DC motor ensures reliable performance in HVAC systems, machinery cooling, and confined spaces requiring forceful airflow.
Heavy-Duty Centrifugal Design
Equipped with a die-cast aluminum impeller and 6 backward-curved blades, it generates intense airflow (3,020 m³/h) and high static pressure (665 Pa)—ideal for overcoming duct resistance or dense environments.
Precision DC Motor Control
Powered by a 48VDC brushless motor (Model BLDC102), it supports 0–10VDC or PWM speed modulation, enabling dynamic airflow adjustments and 30%+ energy savings versus AC alternatives.
Industrial Resilience
IP44-rated against dust/moisture, operates from -25°C to 60°C, and features ball bearings for 50,000+ hours of continuous duty (S1). Integrated protections include soft-start, thermal cutoff, and reverse-polarity lockout.
HVAC Duct Systems: Forceful air delivery in long or complex ventilation networks.
Industrial Machinery Cooling: Spot cooling for high-heat equipment like lasers or compressors.
Server Rack Exhaust: High-static-pressure airflow for IT infrastructure in data centers.
Q: Can this fan handle ducted installations?
A: Yes—its high static pressure (665 Pa) excels in pushing air through ducts, filters, or grilles.
Q: Is the aluminum impeller corrosion-resistant?
A: Absolutely—the die-cast aluminum construction resists rust and degradation in humid/chemical environments.
Q: Why does it use 48VDC instead of AC power?
A: 48VDC offers safer operation, reduced electrical noise, and compatibility with renewable energy systems (e.g., solar/battery).
Q: What if I reverse the wiring polarity?
A: Built-in reverse-polarity protection halts operation to prevent damage—always verify connections before powering on.
Nominal Voltage | VDC | 48 |
Nominal voltage range | VDC | 36~57 |
Current draw | A | 7.0±10% |
Speed(RPM) | min-1 | 2220±5% |
Power consumption | W | 336±10% |
Sound Pressure Level | dB(A) | 69±5% |
Max. Air Flow | CFM / m3/H | 1777.27/3020 |
Max. Static Pressure | In.wg /Pa | 2.66/665 |
Insulation class | ~ | Class B |
Degree of protection | ~ | IP44 |
Control Input | ~ | 0~10VDC / PWM |
Signal Output | ~ | FG (Tach output ) |
The FB3G310-48AY-21 is a high-pressure DC centrifugal fan engineered for demanding ventilation and cooling tasks. Featuring a robust 310mm aluminum impeller and backward-curved blades, it delivers exceptional static pressure (up to 665 Pa) while maintaining energy efficiency. Designed for industrial and commercial use, its brushless DC motor ensures reliable performance in HVAC systems, machinery cooling, and confined spaces requiring forceful airflow.
Heavy-Duty Centrifugal Design
Equipped with a die-cast aluminum impeller and 6 backward-curved blades, it generates intense airflow (3,020 m³/h) and high static pressure (665 Pa)—ideal for overcoming duct resistance or dense environments.
Precision DC Motor Control
Powered by a 48VDC brushless motor (Model BLDC102), it supports 0–10VDC or PWM speed modulation, enabling dynamic airflow adjustments and 30%+ energy savings versus AC alternatives.
Industrial Resilience
IP44-rated against dust/moisture, operates from -25°C to 60°C, and features ball bearings for 50,000+ hours of continuous duty (S1). Integrated protections include soft-start, thermal cutoff, and reverse-polarity lockout.
HVAC Duct Systems: Forceful air delivery in long or complex ventilation networks.
Industrial Machinery Cooling: Spot cooling for high-heat equipment like lasers or compressors.
Server Rack Exhaust: High-static-pressure airflow for IT infrastructure in data centers.
Q: Can this fan handle ducted installations?
A: Yes—its high static pressure (665 Pa) excels in pushing air through ducts, filters, or grilles.
Q: Is the aluminum impeller corrosion-resistant?
A: Absolutely—the die-cast aluminum construction resists rust and degradation in humid/chemical environments.
Q: Why does it use 48VDC instead of AC power?
A: 48VDC offers safer operation, reduced electrical noise, and compatibility with renewable energy systems (e.g., solar/battery).
Q: What if I reverse the wiring polarity?
A: Built-in reverse-polarity protection halts operation to prevent damage—always verify connections before powering on.




Life Expectance | 50,000 Hours(L10),At 40℃ room, humidity 15%~65%RH |
Technical features | Motor current limitation |
Soft starting Protection | |
Under/Over voltage detection | |
Thermal overload protection for electronics/motor | |
Line undervoltage detection | |
Locked-rotor Protection | |
Reverse Polarity Protection |
Operating Temperature | Fan | -25℃ (Min. )~60℃ (Max. ) |
Heat sink of IC | 115℃ (Max. ) | |
Other electronic parts | 85℃ (Max. ) | |
Ball bearing | 80℃ (Max. ) | |
Lead Wire | 120℃ (Max. ) | |
Storage Temperature | -40℃ to 75℃ | |
Operating Humidity | 5% to 90% RH | |
Storage Humidity | 5% to 95% RH | |
Life Expectance | 50,000 Hours(L10),At 40℃ room, humidity 15%~65%RH |
Technical features | Motor current limitation |
Soft starting Protection | |
Under/Over voltage detection | |
Thermal overload protection for electronics/motor | |
Line undervoltage detection | |
Locked-rotor Protection | |
Reverse Polarity Protection |
Operating Temperature | Fan | -25℃ (Min. )~60℃ (Max. ) |
Heat sink of IC | 115℃ (Max. ) | |
Other electronic parts | 85℃ (Max. ) | |
Ball bearing | 80℃ (Max. ) | |
Lead Wire | 120℃ (Max. ) | |
Storage Temperature | -40℃ to 75℃ | |
Operating Humidity | 5% to 90% RH | |
Storage Humidity | 5% to 95% RH | |