FOCUS ON EC FAN ONLY
The PB3N500B2EL 500mm EC-AC Backward Curved Centrifugal Fan is a high-efficiency AC-driven solution specifically engineered for ultra-high airflow industrial-grade ventilation scenarios such as HVAC terminal air supply systems including ventilation for large shopping malls, hospitals, stadiums, and other public spaces. Powered by EC motor (electronically commutated brushless motor) technology, this backward curved centrifugal fan combines the convenience of direct AC mains connection with the high-efficiency control characteristics of a DC motor. Compared to traditional AC induction motors, the EC motor delivers 30%–50% energy savings across all operating conditions, significantly reducing long-term energy costs for large-scale air handling units (AHU) and data center cooling systems.
PBM is more than just a fan manufacturer — we are your industrial ventilation and air handling system solution provider. Whether you are developing a large air handling unit (AHU) for HVAC systems, a fan filter unit (FFU) for cleanroom ventilation, an indirect evaporative cooling system for a data center, or an industrial factory ventilation system, the PBM technical sales team provides complete engineering support — from sample validation to mass production delivery.
Choose the PB3N500B2EL for a high static pressure, low noise, and energy-saving backward curved centrifugal fan that meets your most demanding commercial and industrial ventilation applications.
General Characters
|
1-1 |
Rated Voltage |
230 VAC |
|
1-2 |
Frequency |
50/60 Hz |
|
1-3 |
Operating Voltage |
184~270 VAC |
|
1-4 |
Rated Speed | 710 RPM |
|
1-5 |
Input Current |
3.2 A |
|
1-6 |
Input Power |
1125 W |
|
1-7 |
Air Flow |
4354.90 CFM / 7400 M³/H |
|
1-8 |
Static Pressure |
1.60 inH2O / 400 Pa |
|
1-9 |
Acoustical Noise |
66 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 |
IP44 |
|
1-17 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø500 mm X 328 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 (AWG22 #) |
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 (230VAC/50Hz)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line: AC(3×AWG18#)，DC(4×AWG22#)
2.AC: Brown=Live Line，Blue=Null Line，Green & Yellow=Protecting Earthing;
3.DC: Red=Voltage Output +10VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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