Home / Products / Centrifugal Fans / Backward Centrifugal Fan / 48V DC 57W 190mm Green Noise-controlled Backward Centrifugal Fan for Localized Ventilation in Confined Spaces

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48V DC 57W 190mm Green Noise-controlled Backward Centrifugal Fan for Localized Ventilation in Confined Spaces

1. 190mm
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:
  • FB3G190-48PY-70

  • Fanova

Nominal Voltage

VDC

48

Nominal voltage range

VDC

36~57

Current draw

A

1.2±10%

Speed(RPM)

min-1

2950±5%

Power consumption

W

57±10%

Sound Pressure Level

dB(A

68±5%

Max. Air Flow

CFM / m3/H

365.46/621

Max. Static Pressure

In.wg /Pa

1.612/403

Insulation class

~

Class B

Degree of protection

~

IP44

Control Input

~

0~10VDC / PWM

Signal Output

~

FG (Tach output )

Product Overview

The FB3G190-48PY-70 is a high-torque DC centrifugal fan engineered for precision cooling in 48V systems. With its oversized 190mm impeller and brushless DC motor, it delivers robust airflow (621 m³/h) at lower noise levels (68 dB(A)), making it ideal for applications where quiet operation and energy efficiency are critical. Built to industrial standards (IP44, CE/RoHS), it thrives in demanding environments from telecom cabinets to renewable energy systems.


Core Features

  1. 48V DC-Optimized Efficiency

    • Operates flawlessly on 36–57V DC power sources (e.g., solar/battery systems), consuming just 57W at peak load.

    • Eliminates AC/DC conversion losses, reducing energy waste by up to 20% vs. AC fans.

  2. Large-Impeller Quiet Operation

    • 190mm fiberglass-reinforced impeller moves 621 m³/h air at 2,950 RPM – achieving higher flow with 40% lower noise than comparable industrial fans.

    • Precision-balanced rotor (G6.3) minimizes vibration for silent performance.

  3. Plug-and-Play Industrial Controls

    • Simplified 4-wire interface supports 0–10V DC or PWM speed control with tachometer (FG) feedback.

    • Integrated reverse-polarity protection prevents damage from wiring errors.


Applications

  • Telecom/Server Racks: Cooling for 48V backup power systems and base stations.

  • Renewable Energy: Ventilation in solar inverters, battery storage enclosures.

  • Medical Equipment: Low-noise cooling for imaging devices or lab analyzers.

  • Electric Mobility: Battery thermal management in EVs/charging stations.


FAQ

Q1: Can it run directly from solar panels without a voltage regulator?
A1: Yes. Its wide voltage range (36–57V DC) tolerates fluctuations common in solar/battery systems.

Q2: Why choose DC over AC for high-airflow applications?
A2: DC fans offer finer speed control, lower EMI, and higher efficiency in 48V ecosystems (e.g., data centers, EVs).

Q3: Is it compatible with existing AC fan controllers?
A3: No. Requires a DC-compatible PWM or 0–10V controller (e.g., BMS interfaces).


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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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