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48V DC 146mm 144W Green Energy Efficient Dual Inlet Centrifugal Blower for Home Bedroom Fresh Air System

1. 146mm
2. IP44 protection level
3. Aluminum alloy motor with galvanized steel sheet impeller, fashion design.
4. Using Ball bearing, working life more than 50,000 hours
Availability:
Quantity:
  • FD3G146-48GL-91

  • Fanova

Nominal Voltage

VDC

48

Nominal voltage range

VDC

36~57

Current draw

A

3.0±10%

Speed(RPM)

min-1

1580±5%

Power consumption

W

144±10%

Sound Pressure Level

dB(A

 61±5%

Max. Air Flow

CFM / m3/H

 564.96/960

Max. Static Pressure

In.wg /Pa

 1.0/250

Insulation class

~

  Class B

Degree of protection

~

 IP44

Control Input

~

0~10VDC / PWM

Signal Output

~

FG (Tach output )

Product Overview

The FD3G146-48GL-91 is a dual-inlet DC centrifugal fan optimized for balanced airflow and quiet operation in compact spaces. Powered by a 48VDC BLDC92 motor (36–57VDC range), it delivers 960 m³/h airflow at exceptionally low noise levels (61 dB(A)). Featuring a symmetrical dual-inlet design with a 146mm galvanized steel impeller and IP44-rated construction, it's ideal for applications requiring uniform cooling and minimal acoustic disruption.


Core Features

  1. Symmetrical Airflow Design
    Dual-inlet configuration ensures balanced air intake and reduced turbulence, enhancing cooling efficiency in confined enclosures. The 38-blade impeller maintains consistent airflow distribution.

  2. Ultra-Quiet Performance
    Operates at just 61 dB(A) – significantly quieter than industrial standards – while delivering substantial airflow (960 m³/h). Ideal for noise-sensitive environments like medical facilities or offices.

  3. Robust & Energy-Efficient
    Galvanized steel impeller resists corrosion, while IP44 protection guards against dust/moisture. Wide voltage tolerance (36–57VDC) ensures stable performance with minimal power consumption (144W).


Applications

  • Medical Devices: Cooling for imaging equipment, diagnostic tools, and patient monitors.

  • Server Racks/Telecom: Thermal management in network cabinets and communication systems.

  • HVAC Systems: Auxiliary airflow in compact ducted units or fan coil systems.

  • Laboratory Instruments: Ventilation for analytical devices and fume extraction.


FAQ

Q: Why choose dual-inlet over single-inlet fans?
A: Dual inlets provide balanced airflow distribution, reduce motor stress, and minimize turbulence – critical for consistent cooling in symmetrical enclosures.

Q: How does it achieve such low noise levels?
A: Optimized blade geometry (38 blades) and precision motor control reduce acoustic output without sacrificing airflow.

Q: Is it suitable for 24/7 operation?
A: Yes, rated for S1 continuous duty with a 50,000-hour lifespan (L10 at 40°C).

Q: Can speed be adjusted dynamically?
A: Supports 0–10VDC or PWM control via yellow wire. FG output (4 pulses/revolution) enables real-time RPM monitoring.


DCD146-48GL-91

DD146-48GL-91

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

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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+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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