FOCUS ON EC FAN ONLY
450mm EC backward curved centrifugal fan PK3N450B4EO is designed with high-efficiency EC brushless external rotor motor technology, providing reliable airflow performance and energy-saving operation for HVAC, ventilation, and industrial air handling applications.
With a compact structure and backward curved impeller design, this fan delivers stable airflow, high static pressure capability, and low maintenance requirements. The integrated EC motor supports intelligent speed regulation through 0-10VDC control, allowing flexible adjustment according to different operating conditions while improving overall system efficiency.
Compared with conventional AC motors, the EC motor technology provides higher energy efficiency, lower operating costs, and longer service life. The optimized aerodynamic design reduces airflow resistance and noise, making it suitable for applications requiring continuous operation and reliable ventilation performance.
PBM provides customized solutions for various ventilation systems, including HVAC equipment, air handling units, industrial ventilation systems, and other OEM applications. With advanced motor technology and professional fan manufacturing experience, PBM delivers efficient and dependable airflow solutions for global customers.
General Characters
|
1-1 |
Rated Voltage |
3～380 VAC |
|
1-2 |
Operating Voltage |
323～437 VAC |
|
1-3 |
Rated Speed |
1866 RPM |
|
1-4 |
Input Current |
2.68 A |
|
1-5 |
Input Power |
1200 W |
|
1-6 |
Air Flow |
7617 M³/H |
|
1-7 |
Static Pressure |
937 Pa |
|
1-8 |
Acoustical Noise |
82 dB(A) |
|
1-9 |
Life Expectancy |
50,000 Hours (L10) At 40℃ room, humidity 15%~65%RH. |
|
1-10 |
Insulation Class |
Class F |
|
1-11 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-13 |
Speed Control |
Control input 0~10VDC/PWM/RS485 |
|
1-14 |
Protection Type |
IEC 60529 IP54 |
|
1-15 |
Signal Output |
/ |
Mechanical Characters
|
2-1 |
Dimension |
500mm X500mm X 367.5mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Metal |
|
2-3 |
Number of Blades |
6 |
|
2-4 |
Bearing System |
Ball bearing |
|
2-5 |
Lead Wire |
/ |
Environmental Characters
|
3-1 |
Operating Temperature |
-20℃ to 55℃ |
|
3-2 |
Storage Temperature |
-20℃ to 70℃ |
|
3-3 |
Operating Humidity |
5% to 85% RH |
|
3-4 |
Storage Humidity |
0% to 95% RH |
Performance Curve
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
1. Connection line:(L=1500±50）
2. AC:Brown=L1,Black=L2,Blue=L3,Green&Yellow=Protecting Earthing;
3. DC:Red=Orange=0-10VDC/PW,Yellow=485A,Green=485B,Purple=NO,White=COM,Blue=nc,
Black=GND.
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