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 PB3N355B48U 355mm EC-DC Backward Curved Centrifugal Fan is a high-efficiency DC cooling solution specifically engineered for ultra-high static pressure industrial-grade ventilation scenarios such as air handling units (AHU) and modular air conditioning systems, fan filter units (FFU) and cleanroom systems, telecom base station cooling and communication cabinet ventilation, indirect evaporative cooling systems, as well as industrial ventilation and dust removal equipment. Rated at 48V DC with a wide operating voltage range of 36 to 57V DC and powered by advanced brushless DC motor technology, this backward curved centrifugal fan delivers an industry-leading 3357 m³/h (1975.59 CFM) of airflow and an ultra-high static pressure of 584 Pa (2.34 inH2O) at 1,770 RPM.
PBM is more than just a fan manufacturer — we are your industrial ventilation and thermal management solution provider. With over 15 years of expertise in DC/EC motor and fan technologies, we offer fully customized services including ingress protection (IP) rating upgrades, corrosion-resistant impeller treatment, customized lead wire specifications, and speed control parameter optimization. Whether you are developing a high-static AHU, a cleanroom FFU system, or an industrial dust collector, the PBM technical team provides complete engineering support from prototype validation to mass production delivery.
Choose the PB3N355B48U for a high static pressure, low noise, and energy-saving backward curved centrifugal fan that meets your most demanding industrial and cleanroom applications.
General Characters
|
1-1 |
Rated Voltage |
48 VDC |
|
1-2 |
Operating Voltage |
36~57 VDC |
|
1-3 |
Rated Speed |
1770 RPM |
|
1-4 |
Input Current |
3.55 A |
|
1-5 |
Input Power |
340.8 W |
|
1-6 |
Air Flow |
1975.59 CFM / 3357 M³/H |
|
1-7 |
Static Pressure |
2.34 inH2O / 584 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 |
IP44 |
|
1-15 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø355 mm X 183 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Aluminium Sheet |
|
2-3 |
Number of Blades |
6 |
|
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 (48VDC)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line:DC(4×AWG20#)
2.DC: Red=Voltage Intput 48VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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