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48V DC 225mm 115W Work Quietly Radial Cooling Backward Centrifugal Fan

1. 225mm
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:
  • FB3G225-48PY-70

  • Fanova



Nominal Voltage

VDC

48

Nominal voltage range

VDC

36~57

Current draw

A

2.4±10%

Speed(RPM)

min-1

2300±5%

Power consumption

W

115±10%

Sound Pressure Level

dB(A

67±5%

Max. Air Flow

CFM / m3/H

632.05/1074

Max. Static Pressure

In.wg /Pa

1.648/412

Insulation class

~

  Class B

Degree of protection

~

IP44

Control Input

~

0~10VDC / PWM

Signal Output

~

FG (Tach output )

Product Overview

The 48V-DC 225mm 115W Backward-Curve Centrifugal Fan prioritizes ultra-low noise and efficient airflow for sensitive environments, leveraging an external-rotor DC motor (Model: BLDC72) and a lightweight 7-blade glass-fiber reinforced polypropylene impeller. Designed to deliver 412 Pa maximum static pressure at 1074 m³/h airflow, it excels in applications requiring silent operation without compromising performance. Its wide voltage range (36–57V DC) ensures adaptability in variable-power settings like mobile labs or low-noise HVAC units.


Core Features

  1. Industry-Leading Quiet Operation

    • Optimized backward-curved blades and precision-balanced impeller achieve 67 dB(A) sound pressure at full load—ideal for medical facilities, recording studios, or residential HVAC.

    • Encapsulated motor windings minimize electromagnetic interference (EMI).

  2. Efficient Airflow in Compact Form

    • Generates 412 Pa static pressure to overcome resistance in compact ducts or medium-efficiency filters (MERV 12-14).

    • Glass-fiber reinforced polypropylene impeller reduces weight while maintaining structural integrity, enabling higher RPM (2300 min⁻¹) with minimal vibration.

  3. Robust Control & Protection

    • Soft-start to prevent inrush current

    • Overvoltage/undervoltage cutoff (36–57V DC)

    • Dual thermal safeguards (electronics + motor windings).

    • 0–10VDC/PWM speed control allows seamless integration with automated thermal systems.

    • FG tachometer output (2 pulses/revolution) provides real-time diagnostics.

    • Multi-stage protection:

  4. Durability for Demanding Environments

    • IP44-rated housing resists dust and water splashes.

    • Ball bearings support continuous operation (S1 duty) across –25°C to 60°C ambient temperatures.

    • Electrophoretic black-coated rotor enhances corrosion resistance.


Typical Applications

  • Medical & Laboratory Equipment: Cooling for DNA sequencers, microscopes, or patient monitoring devices where noise is critical.

  • Residential Ventilation: Silent boosters for energy-recovery ventilators (ERVs) or premium HVAC systems.

  • Audio/Visual Installations: Cooling projectors, amplifiers, or broadcast equipment in studios.

  • Portable Testing Devices: Battery-powered airflow for field-deployable environmental analyzers.


DC225-48PY-70

图片2

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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+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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