FOCUS ON EC FAN ONLY
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
The PB3N175B24H 175mm EC-DC Backward Curved Centrifugal Fan is a high-efficiency DC cooling solution specifically designed for data center server rack cooling, rack-mounted cooling units, in-row air conditioners, high-density computing node fan walls, and other data center hardware equipment requiring medium-to-high static pressure ventilation.
Powered by cutting-edge brushless DC motor technology and rated at 24V DC (working voltage range: 16~28V DC), this backward curved fan produces an amazing 565 m³/h (332.5 CFM) of airflow and a maximum static pressure of 402 Pa (1.61 inH2O) at 3,100 RPM.
The backward curved impeller has blades that tilt away from the direction of rotation, allowing the majority of the pressure creation to take place inside the impeller itself, in contrast to axial fans or conventional forward curved centrifugal fans. This unique aerodynamic design significantly reduces energy loss in the downstream volute or housing, resulting in substantially higher aerodynamic efficiency compared to conventional fan solutions.
With over 15 years of expertise in DC/EC motor and fan technologies, PBM offers fully customized solutions across multiple dimensions. Whether you are developing a fresh air purification system, a data center cooling solution, an air handling unit (AHU) for HVAC systems, medical equipment, or an industrial automation control system, the PBM technical sales team provides complete engineering support — from sample validation to mass production delivery.
Choose the PB3N175B24H for a low noise, high static pressure, and energy-saving backward curved centrifugal fan that meets your most demanding cooling applications.
General Characters
|
1-1 |
Rated Voltage |
24 VDC |
|
1-2 |
Operating Voltage |
16~28 VDC |
|
1-3 |
Rated Speed |
3100 RPM |
|
1-4 |
Input Current |
1.6 A |
|
1-5 |
Input Power |
38.4 W |
|
1-6 |
Air Flow |
332.5 CFM / 565 M³/H |
|
1-7 |
Static Pressure |
1.61 inH2O / 402 Pa |
|
1-8 |
Acoustical Noise |
65 dB(A) |
|
1-9 |
Life Expectance |
50,000 Hours(L10) At 40℃ room, humidity 15%~65%RH. |
|
1-10 |
Insulation Class |
Class B |
|
1-11 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-13 |
Speed Control |
Control input 0~10VDC / PWM |
|
1-14 |
Protection Type |
IP44 |
|
1-15 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø175 mm X 68 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
PA6+GF |
|
2-3 |
Number of Blades |
7 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
DC (AWG20 #) |
Environmental Characters
|
3-1 |
Operating Temperature |
-25℃ to 60℃ |
|
3-2 |
Storage Temperature |
-40℃ to 75℃ |
|
3-3 |
Operating Humidity |
5% to 90% RH |
|
3-4 |
Storage Humidity |
5% to 95% RH |
Performance Curve
Testing Condition:
Input Voltage----Operating voltage (24VDC)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line:DC(4×AWG20#)
2.DC: Red=Voltage Intput 24VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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