Product Introduction
The ECNITY EC centrifugal fans bldc centrifugal fan offer strong customization capabilities. According to user requirements, parameters such as impeller size, motor power, voltage specifications, and installation methods can be customized.
For outdoor applications, IP55 protection models are available with fully encapsulated control boards to prevent water and dust ingress.
For high-temperature environments, Class H insulation motors with external control boards can operate in extreme temperatures ranging from -40°C to 120°C.
For specialized applications such as rail transportation, 80V DC EC fans can be customized, supporting 0-10V / PWM / RS485 speed control methods.
Additional customization options include mounting bracket structures, cable lengths, and installation interfaces, ensuring compatibility with various installation spaces.

EC centrifugal fans bldc centrifugal 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-B355-H120-E115-C01 |
115 |
90~135 |
50/60 |
4.00 |
460 |
1920 |
4000 |
800 |
75 |
|
EN-B355-H120-E230-C01 |
230 |
184~274 |
50/60 |
2.00 |
460 |
1920 |
4000 |
800 |
75 |
|
EN-B355-H120-E380-C01 |
380 |
310~460 |
50/60 |
1.25 |
460 |
1920 |
4000 |
800 |
75 |
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 |
||
The ECNITY EC centrifugal fans bldc centrifugal fan incorporates a comprehensive motor protection system to ensure safe operation. In addition to standard protections such as locked rotor protection, thermal protection, and overcurrent protection, the system also includes high and low voltage protection, phase-loss protection, and soft-start protection.
If the input voltage exceeds the rated range, the fan will automatically shut down to prevent motor damage. In the case of a phase loss in three-phase power systems, the fan immediately enters protection mode to prevent motor burnout.
The soft-start function ensures a smooth startup process, preventing sudden high current surges that could damage electrical systems or other connected equipment.
Furthermore, the power cable and control cable are designed with separate wiring systems, reducing the risk of incorrect wiring. The fan also comes with 500±20 mm cable length, facilitating convenient installation and connection.

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FAQ
1. Can EC fans support project-based delivery schedules?
EC fans can be supplied according to project delivery schedules. Production and logistics planning help align with project timelines. Early communication is recommended. This ensures smooth coordination for large projects.
2. How does this EC fan perform under real operating conditions?
EC fans are designed to perform reliably under real operating conditions. Performance remains stable across varying loads. Integrated control adapts to system changes. Proper selection ensures expected performance in the field.
3. Is technical support available for EC fan selection?
Technical support is typically available to assist with EC fan selection. Support includes performance evaluation and application guidance. This helps buyers choose the correct model. Proper support reduces selection errors and project risks.
4. Can EC centrifugal fans be supplied for pilot or sample orders?
Sample or pilot orders may be available depending on the model. This allows customers to evaluate performance before mass procurement. Sampling is common in OEM and project validation stages. Availability should be confirmed in advance.
5. What information should buyers confirm before placing an order?
Buyers should confirm airflow, static pressure, voltage, and control requirements. Installation conditions and application environment should also be clarified. Verifying these parameters helps ensure correct fan selection. This reduces the risk of mismatch after delivery.



