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85V DC 250mm 420W Ultra-high Pressure Air Flow Fan Backward Centrifugal Fan

1. 250mm
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:
  • FB3G250-85PL-20

  • Fanova

Nominal Voltage

VDC

85

Nominal voltage range

VDC

68~102

Current draw

A

5.0±10%

Speed(RPM)

min-1

3720±5%

Power consumption

W

420±10%

Sound Pressure Level

dB(A

83.3±5%

Max. Air Flow

CFM / m3/H

1142.28/1941

Max. Static Pressure

In.wg /Pa

  4.99/1248

Insulation class

~

Class B

Degree of protection

~

IP44

Control Input

~

0~10VDC / PWM

Signal Output

~

FG (Tach output )

Product Overview

The FB3G250-85PL-20 is a high-pressure DC centrifugal fan engineered by Fanova (Suzhou) for demanding industrial applications requiring precise voltage control. Operating at 85V DC (68–102V range), it delivers exceptional 1,248 Pa static pressure—ideal for systems needing powerful airflow against dense resistance.

Key Features

  1. High-Pressure DC Operation
    Optimized for 85V DC industrial power systems, generating 1,248 Pa static pressure—the highest in its class—for penetrating dense filters or long duct runs.

  2. Precision Speed Control
    PWM/0–10V DC input + tachometer feedback (3 pulses/rev) enables real-time RPM adjustments (±5% at 3,720 RPM) for dynamic system optimization.

  3. Lightweight Powerhouse
    Glass-fiber-reinforced polypropylene impeller balances 420W (±10%) power handling with corrosion resistance—40% lighter than metal alternatives.

Applications

  • Industrial Filtration: Forced airflow in HEPA/ULPA systems for cleanrooms or labs.

  • Battery Cabinet Cooling: Thermal management for high-voltage EV charging stations.

  • Process Equipment: Ventilation for laser cutters, 3D printers, or CNC machines.

  • DC Microgrids: Integration with solar/wind-powered ventilation systems.


DC250-85PL-20

D250-85PL-20

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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Contact Us

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

If you have any questions, please feel free to contact us at any time!

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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Contact Us

+86-512-66152110
+86-17715518438
Sales01@fanova-tech.com
+8617715518438
+8617715518438
No.739, Fuyuan Road, Xiangcheng District, Suzhou, Jiangsu, P.R. China 215133
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