FOCUS ON EC FAN ONLY
The PB3N355B4EP 355mm EC-DC Backward Curved Centrifugal Fan is a high-efficiency electronically commutated (EC) fan solution designed for demanding HVAC, air handling, and industrial ventilation applications. Equipped with a powerful BE138EC external rotor EC motor, this backward curved centrifugal fan delivers excellent airflow performance, high static pressure capability, and reliable operation for various air movement systems.
Powered by advanced EC motor technology, the fan provides significant energy savings compared with traditional AC motor solutions while maintaining precise speed control through 0-10VDC input. With a maximum airflow of 5934 m³/h and maximum static pressure of 1289 Pa, the PB3N355B4EP is suitable for AHU systems, ventilation equipment, air purification units, and other commercial and industrial air handling applications.
Designed with a metal impeller, 5 optimized blades, and a durable ball bearing system, this centrifugal fan ensures stable operation, low maintenance requirements, and long service life up to 50,000 hours (L10). The IP54 protection rating and multiple electrical protection functions provide reliable performance even in challenging operating environments.
PBM provides complete ventilation solutions with professional engineering support, covering product selection, technical consultation, sample validation, and mass production. Choose the PB3N355B4EP for an energy-efficient, high-performance backward curved centrifugal fan solution that meets modern HVAC and industrial ventilation requirements.
General Characters
|
1-1 |
Rated Voltage |
3～380 VAC |
|
1-2 |
Frequency |
50/60 Hz |
|
1-3 |
Operating Voltage |
380~460 VAC |
|
1-4 |
Rated Speed | 2700 RPM |
|
1-5 |
Input Current |
1.91 A |
|
1-6 |
Input Power |
1120 W |
|
1-7 |
Air Flow |
5934 M³/H |
|
1-8 |
Static Pressure |
1289 Pa |
|
1-9 |
Acoustical Noise |
87 dB(A) |
|
1-10 |
Life Expectance |
50,000 Hours(L10) At 40℃ room, humidity 15%~65%RH. |
|
1-11 |
Insulation Class |
Class F |
|
1-12 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-13 |
Speed Control |
Control input 0~10VDC |
|
1-14 |
Protection Type |
IEC 60529 IP54 |
|
1-15 |
Signal Output |
/ |
Mechanical Characters
|
2-1 |
Dimension |
372 mm X 372 mm X 260.3 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Metal |
|
2-3 |
Number of Blades |
5 |
|
2-4 |
Bearing System |
Ball bearing |
|
2-5 |
Lead Wire |
/ |
Environmental Characters
|
3-1 |
Operating Temperature |
-10℃ to 50℃ |
|
3-2 |
Storage Temperature |
-25℃ to 60℃ |
|
3-3 |
Operating Humidity |
0% to 85% RH |
|
3-4 |
Storage Humidity |
0% to 95% RH |
Performance Curve
Testing Condition:
Input Voltage----Operating voltage
Temperature-----Room temperature
Humidity---------65%RH
Standard---------AMCA 210
The air flow rate specified in the specification sheet is measured on PBM measurement
equipment. The actual installed air flow rate may vary with changes in installation conditions.
In case of deviation from the standard air flow rate, the parameters must be verified on the
installed equipment.
Outline Drawing
Note:
1.Connection line(L=1200±20):
2.AC: Brown=L1,Black=L2,Blue=L3，Green&Yellow=Protecting Earthing;
3.DC: Red=Voltage Output +10VDC, Orange=0-10VDC, Black=GND, Brown=FG.
4.Accessory part:Inlet ring IR-310,not include in the standard scope of delivery.
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