Product Introduction
ECNITY EC backward curved EC motor fans are known for their smooth operation and balanced airflow. Optimized impeller geometry minimizes turbulence, contributing to lower vibration and noise levels. These characteristics make EC motor fans suitable for noise-sensitive applications while still delivering robust cooling performance in demanding environments.

EC Backward Curved Ec Motor Fan 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-B250-H052-E115-A01 |
115 |
90~135 |
50/60 |
1.50 |
90 |
2500 |
1200 |
485 |
63 |
|
EN-B250-H052-E230-A01 |
230 |
184~274 |
50/60 |
0.75 |
90 |
2500 |
1200 |
485 |
63 |
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 |
||
By combining EC backward curved EC motor fan characteristics with EC motor PWM control, the system achieves high static pressure capability alongside intelligent speed regulation. This makes EC centrifugal PWM-controlled fans particularly suitable for ducted ventilation systems where airflow resistance varies dynamically. The precise control offered by PWM ensures consistent ventilation performance while minimizing energy waste, making it a preferred solution for advanced HVAC and industrial ventilation systems.

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FAQ
1. What information is required to request an EC fan quotation?
Key information includes airflow, static pressure, voltage, and application. Installation conditions and control requirements are also important. Providing detailed parameters helps ensure accurate selection. This speeds up the quotation process.
2. Are EC centrifugal fans suitable for OEM mass production?
Yes, EC centrifugal fans are widely used in OEM mass production. Their integrated control design reduces external components and wiring. This simplifies assembly and improves consistency. EC fans are suitable for standardized and scalable production lines.
3. What lead time is typical for EC centrifugal fans?
Lead time depends on model, quantity, and customization requirements. Standard models usually have shorter lead times. Customized specifications may require additional production time. Exact delivery time should be confirmed during order placement.
4. Can EC fans be supplied with customized control settings?
Yes, EC fans can often be supplied with customized control parameters. Speed range, control response, or default settings may be adjusted. This is especially useful for OEM and project-based applications. Custom settings should be defined before production.
5. Are EC fans suitable for export to Europe and North America?
EC fans are commonly used in European and North American markets. They are designed to meet regional efficiency and electrical requirements. Voltage and certification options should be confirmed. This makes EC fans suitable for global export projects.



