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 PB3N133B24-RB0 133mm IP55 EC-DC Backward Curved Centrifugal Fan is a high-efficiency DC cooling solution specifically engineered for ultra-high static pressure compact ventilation scenarios requiring waterproof and dustproof protection, such as outdoor telecom base station cabinet cooling and communication equipment cooling. Unlike axial fans or traditional forward curved centrifugal fans, the backward curved centrifugal fan features backward-inclined blades that allow most of the pressure generation to occur inside the impeller itself, significantly reducing energy loss in the downstream volute or housing. This unique aerodynamic design delivers substantially higher aerodynamic efficiency compared to conventional fan solutions, maintaining excellent performance even under ultra-high static pressure conditions of 750 Pa. This makes the PB3N133B24-RB0 especially suitable for compact applications that require overcoming resistance from HEPA high-efficiency filters, cabinet dust filter screens, or long-distance air delivery ductwork.
With an IP55 protection rating ensuring reliable operation in harsh outdoor environments, and powered by advanced brushless DC motor technology, this backward curved centrifugal fan delivers exceptional airflow and static pressure in a compact 133mm form factor.
PBM backward curved centrifugal fans are widely used across core industries including electronics cooling, mechanical equipment, ventilation and air purification, HVAC systems, cold storage and cold chain, IT and electronics industry, medical industry, and data center cooling.
Choose the PB3N133B24-RB0 for a high static pressure, low noise, and energy-saving IP55 compact backward curved centrifugal fan that meets your most demanding outdoor telecom and communication equipment cooling applications.
General Characters
|
1-1 |
Rated Voltage |
24 VDC |
|
1-2 |
Operating Voltage |
16~28 VDC |
|
1-3 |
Rated Speed |
5000 RPM |
|
1-4 |
Input Current |
2.1 A |
|
1-5 |
Input Power |
50 W |
|
1-6 |
Air Flow |
247.17 CFM / 420 M³/H |
|
1-7 |
Static Pressure |
3.00 inH2O / 750 Pa |
|
1-8 |
Acoustical Noise |
71 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 |
IP55 |
|
1-15 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø133 mm X 110 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
PA66+GF |
|
2-3 |
Number of Blades |
7 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
Red, Blue(AWG18#)；Yellow, White(AWG24#)
|
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: Red, Blue(AWG18#)；Yellow, White(AWG24#)
2.DC: Red=Voltage Intput 24 VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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