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24V DC 115W 225mm Backward Centrifugal Air Blower Fan for Ventilation in Small Bathrooms

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:
  • FB3G225-24PY-70

  • Fanova

Nominal Voltage

VDC

24

Nominal voltage range

VDC

16~28

Current draw

A

4.8±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 FB3G225-24PY-70 is a high-capacity DC backward centrifugal fan designed for intensive cooling and ventilation tasks. Powered by a 24VDC BLDC72 brushless motor (operational range: 16–28VDC), it delivers exceptional airflow up to 1,074 m³/h and static pressure of 412 Pa. Engineered with a large 225mm glass-fiber-reinforced impeller and IP44-rated construction, it excels in industrial settings where robust thermal management is critical. Ideal for heavy machinery, large-scale HVAC, and high-heat environments.


Core Features

  1. High-Volume Airflow Performance
    Features a 225mm impeller optimized for maximum air displacement (1,074 m³/h), enabling efficient cooling of large enclosures or high-power equipment. The wide voltage tolerance (16–28VDC) ensures stability in variable power conditions.

  2. Industrial-Grade Durability
    Built with ball bearings, die-cast aluminum housing, and a reinforced composite impeller to withstand continuous operation (S1 duty). IP44 protection resists dust/water ingress, and thermal safeguards prevent overheating.

  3. Precision Control & Monitoring
    Supports 0–10VDC/PWM speed modulation and includes an FG tachometer output (2 pulses/revolution) for real-time RPM feedback. Integrated protections (reverse polarity, soft-start, and current limiting) enhance system safety.


Applications

  • Industrial Ventilation: Cooling for large control cabinets, welding equipment, and power distribution units.

  • Commercial HVAC: Air handling in ducted systems or exhaust units requiring high static pressure.

  • Energy Systems: Thermal management in battery storage units, solar inverters, or backup generators.

  • Heavy-Duty Machinery: Cooling for hydraulic systems, compressors, or agricultural equipment.


FAQ

Q: What makes this fan suitable for high-static-pressure applications?
A: Its 225mm impeller and optimized blade design generate 412 Pa of pressure, ideal for pushing air through dense filters or long duct runs.

Q: Can it operate in high-humidity environments?
A: Yes, with IP44 protection and 5–90% operating humidity tolerance, it performs reliably in damp conditions.

Q: How is the tachometer (FG) signal used?
A: The white wire outputs 2 pulses per revolution, allowing RPM monitoring for predictive maintenance or system diagnostics.

Q: Does it comply with international safety standards?
A: Certified for CE, RoHS, ISO 9001, and ErP 2015, meeting EN/IEC industrial safety and EMC directives.


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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

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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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