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48V DC 310mm 336W Work Quietly Backward Centrifugal Fan for Laboratory Ventilation System

1. 310mm
2. IP44 protection level
3. Aluminum alloy motor with Propylene with glass-fiber reinforced impeller, fashion design.
4. Using Ball bearing, working life more than 50,000 hours
Availability:
Quantity:
  • 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 )

Product Overview

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.


Key Features

  1. 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.

  2. 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.

  3. 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.


Applications

  • 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.


FAQ

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.


DCB310-48AY-21

DB310-48AY-21

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


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 +86-512-66152110
 +86-18168737096
 +8617715518438
 +8617715518438
 No.739, Fuyuan Road, Xiangcheng District, Suzhou, Jiangsu, P.R. China 215133

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Fanova (Suzhou) Motor Technology Co., Ltd. is a leader in the industry, provides customers with diverse fan solutions with its professional, innovative, and environmentally friendly philosophy.

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+86-512-66152110
+86-17768077282
Sales01@fanova-tech.com
+8617768077282
+8617768077282
No.739, Fuyuan Road, Xiangcheng District, Suzhou, Jiangsu, P.R. China 215133
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