Product Introduction
This ECNITY 133mm EC backward curved centrifugal fan is a high-performance ventilation solution designed for applications requiring high static pressure, stable airflow, and exceptional energy efficiency. By combining a backward curved impeller with an electronically commutated (EC) motor, this fan delivers significantly lower power consumption while maintaining precise speed control and reliable long-term operation.
Technical Parameters
|
Model No. |
Rated |
Operation Voltage |
Frequency |
Rated |
Rated Power |
Rated |
Air Flow |
Air |
Noise |
|
VAC |
VAC |
Hz |
A |
W |
RPM |
m3/h |
Pa |
dBA |
|
|
EN-B133-H040-E115-A01 |
115 |
90~135 |
50/60 |
0.70 |
45 |
4500 |
470 |
475 |
70 |
|
EN-B133-H040-E230-A01 |
230 |
184~274 |
50/60 |
0.35 |
45 |
4500 |
470 |
475 |
70 |
Outline Drawing
Performance Curve
Connection
|
DC Wire |
AC Wire |
||
|
Color |
Function |
Color |
Function |
|
Red |
+10VDC |
Brown |
L |
|
Blue |
GND |
Blue |
N |
|
Yellow |
0~10VDC/PWM |
Green/Yellow |
PE |
|
White |
FG |
||
This ECNITY 133mm EC backward curved centrifugal fan is widely used in HVAC, air handling, and industrial ventilation systems where high efficiency, stable airflow, and higher static pressure are required. Compared with forward curved blowers, backward curved centrifugal fans deliver superior energy efficiency, lower noise levels, and more stable performance under varying system resistance, making them ideal for modern energy-saving applications.
ECNITY 133mm EC backward curved centrifugal fan application field recommended:
- Air handling units (AHU)
- Heat recovery ventilation (HRV / ERV)
- Free cooling systems
- Industrial ventilation systems
Our factory
FAQ
Q: 1. What is an EC centrifugal fan?
A: An EC centrifugal fan combines a centrifugal impeller with an EC motor. The integrated controller allows flexible speed adjustment through standard control signals. This type of fan is suitable for applications requiring stable airflow and higher static pressure. It is commonly used in industrial ventilation and air handling units.
Q: 2. How does an EC centrifugal fan work?
A: An EC centrifugal fan draws air into the impeller and accelerates it radially outward. The EC motor controls speed electronically based on the input signal. This allows precise airflow regulation without mechanical losses. The fan adapts efficiently to changing system demand.
Q: 3. What is a centrifugal fan used for?
A: Centrifugal fans are used to move air in systems with moderate to high resistance. They are commonly applied in HVAC, industrial exhaust, and ventilation systems. Compared to axial fans, they provide higher static pressure. This makes them suitable for ducted and enclosed installations.
Q: 4. Is an EC fan more energy-efficient than a traditional centrifugal fan?
A: Yes, EC fans are generally more energy-efficient than traditional AC centrifugal fans. Efficiency remains high across a wide speed range. This helps reduce energy consumption during partial load operation. Lower operating costs make EC fans suitable for long-term industrial use.