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 PB3N355B4E-ZW5 355mm IP55 EC-AC Backward Curved Centrifugal Fan is specifically engineered for large air handling units (AHU) and modular air conditioning systems, including central air conditioning systems and industrial factory ventilation — delivering high-efficiency AC-driven performance in heavy-duty industrial ventilation scenarios requiring ultra-high airflow with waterproof and dustproof protection.
With 1050 Pa ultra-high static pressure, this backward curved centrifugal fan easily overcomes cumulative resistance from HEPA filters, large AHU coil arrays, and long-distance ductwork, ensuring stable high-volume airflow in AHU, ERV/HRV, and cleanroom systems.
Powered by EC motor (electronically commutated brushless motor) technology — built on a brushless DC motor core with electronic commutation for precise and efficient energy conversion — this fan delivers significant energy savings compared to traditional AC induction motors across all operating conditions. The fan supports 0–10V DC / PWM dual-mode stepless speed control input, allowing system integrators to dynamically adjust fan speed based on real-time thermal loads or system static pressure for precise airflow control and energy optimization.
Choose the PB3N355B4E-ZW5 for a high static pressure, low noise, IP55 EC-AC backward curved centrifugal fan for your most demanding large AHU and industrial ventilation applications.
General Characters
|
1-1 |
Rated Voltage |
380 VAC |
|
1-2 |
Frequency |
50/60 Hz |
|
1-3 |
Operating Voltage |
304~456 VAC |
|
1-4 |
Rated Speed | 2500 RPM |
|
1-5 |
Input Current |
1.8 A |
|
1-6 |
Input Power |
1100 W |
|
1-7 |
Air Flow |
3942.95 CFM / 6700 M³/H |
|
1-8 |
Static Pressure |
4.60 inH2O / 1150 Pa |
|
1-9 |
Acoustical Noise |
86 dB(A) |
|
1-10 |
Life Expectance |
50,000 Hours(L10) At 40℃ room, humidity 15%~65%RH. |
|
1-11 |
Insulation Class |
Class F |
|
1-13 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-14 |
Speed Control |
Control input 0~10VDC / PWM |
|
1-15 |
Protection Type |
IP55 |
|
1-17 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø359 mm X 257.5 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Aluminium sheet |
|
2-3 |
Number of Blades |
8 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
AC (AWG18#)，DC (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 (380VAC/50Hz)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line: AC(6×AWG18#)，DC(6×AWG24#)
2.AC: Brown=L1(R)，Blue=L2(S)，Black=L3(T)，Green & Yellow=Protecting Earthing,White=NC，Gray=COM;
3.DC: Red=Voltage Output +10VDC, Yellow=0-10VDC/PWM, Blue=GND, White=Tach output, Brown=RSA,Gray=RSB ;
If you have any interest in our products,please feel free to contact us & we are ready to serve you
By continuing to use the site you agree to our privacy policy Terms and Conditions.
