[ High Efficiency ] Aluminum alloy impeller optimized by ternary flow CFD fluid simulation technology, reasonably designed flow runner combined with ultra-efficient EC motor create the high efficiency of the fan.
[ Low Noise ] The designer closely combines aerodynamics and sound source, and makes the blade angle and blade pattern fully adapt to the ternary flow field, which always ensures lower noise at the same air volume.
[ High Reliability ] Motors have IP54 waterproof and dust proof protection, F class insulation, and been tested for 3 months of 60℃ high temperature test and 40,000 hours of life test, which ensure worse-free quality.
[ Accurate Intelligent Control ] The fan adopts efficient EC motor and supports various control modes such as 0~10V / PWM / RS485 to accurately meet the ventilation needs of different period of time.
[ Wide Application ] The products is used wherever outstanding performance is required, for example, AHU, FFU, IDC small cabinet, high voltage inverter cabinet, energy storage charging pile, commercial air conditioning, rail transit and more.
[ Variety of Models ] Available in dimensions of : 250mm~560mm, this allows for air flow rates of up to 20710m3/h and static pressure of up to 2000Pa.
| Availability: | |
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| Quantity: | |
B250M.E011
EBST
B250M.E011
Product Parameters |
Material: | Impeller: Aluminum alloy 5052 |
Direction of rotation: | Clockwise, seen on rotor |
| Control input: | 0-10VDC/PWM |
Type of protection: | IP 54 |
Insulation class: | F |
Bearing: | Maintenance-free Ball bearings |
Approval: | CCC |
Amb.Temp: | -25~+60℃ |
Model | Curve | Voltage [V] | Frequency [Hz] | Speed [rpm] | Max Power [W] | Max Airflow [m3/h] | Noise [dB(A)] |
B250M.E011 | A | 230 | 50/60 | 3920 | 618 | 2166 | 75 |
![]() | Ps [Pa] | Airflow [m3/h] | Speed [rpm] | Power [W] | ||
A | ① | 500 | 1736 | 3893 | 563 | |
② | 600 | 1625 | 3902 | 585 | ||
③ | 700 | 1532 | 3902 | 614 | ||
④ | 800 | 1377 | 3849 | 618 | ||


Application Scenarios |
Air Handling Unit (AHU)
Suitable for various commercial and industrial air handling units (AHU), it can stably supply large air volume and high static pressure for ventilation. Combined with intelligent speed regulation, it achieves high-efficiency heat exchange and energy-saving operation, meeting the demand for long-term stable and low-noise operation of central air conditioning systems.
Fan Filter Unit (FFU)
Specially matched for fan filter units (FFU) in clean room environments, it features uniform air pressure and stable airflow, ensuring cleanliness and ventilation efficiency in dust-free workshops, electronic factories and other places, with reliable and trouble-free long-term operation.
Internet date center IDC
Designed for high-density heat dissipation in small IDC cabinets, it has sufficient static pressure and fast response, quickly removing heat from equipment to ensure stable operation of servers and network devices, suitable for precise temperature control in cabinets.
High-Voltage Inverter Cabinet
Suitable for forced heat dissipation inside high-voltage inverter cabinets, it is high temperature resistant with high protection grade, stably exhausting air in complex electrical environments, effectively reducing temperature rise of power modules and improving operation safety and service life of inverter equipment.
Energy Storage & Charging Pile
For heat dissipation scenarios of energy storage systems and charging piles, it has wide operating conditions and strong anti-interference ability, providing continuous and stable heat dissipation to ensure safe operation of battery modules and charging modules under high load.
Rail Transit
Meeting the ventilation and heat dissipation requirements of rail transit equipment such as subways, light rails and high-speed rails, it has good shock resistance and strong environmental adaptability, operating continuously under bumpy, high and low temperature environments to ensure reliable ventilation for carriages and electrical equipment.
Product Certificate |
UL Certification
Certified by authoritative UL safety certification, the EC high-static-pressure backward centrifugal fan is safe, reliable and long-lasting, fully meeting the access standards of North American and global high-end markets.
CE Certification
Compliant with EU Low Voltage Directive (LVD) and EMC Directive, the EC high-static-pressure backward centrifugal fan is fully qualified for EU market access, enabling smoother global sales and application.
CCC Certification
In compliance with China's mandatory product certification, the EC high-static-pressure backward centrifugal fan fully meets electrical safety and EMC standards, ensuring safe and stable operation for various domestic compliant industrial applications.
CQC Certification
Certified by the China Quality Certification Center, the EC high-static-pressure backward centrifugal fan has passed strict performance and reliability tests, with controllable quality and stable guarantee for industrial ventilation and heat dissipation.
RoHS Certification
In strict compliance with EU RoHS environmental directives, the use of hazardous substances is strictly controlled. The EC high-static-pressure backward centrifugal fan is green and eco-friendly, suitable for clean rooms, medical, electronics and other fields with strict environmental requirements.
REACH Certification
Compliant with EU REACH regulations, it fully controls the risks of chemical substances. The EC high-static-pressure backward centrifugal fan meets EU and global export compliance requirements, suitable for international market applications.
FAQ |
Q1:What are the core advantages of this EC backward centrifugal fan?
A1:With aluminum alloy impeller optimized by ternary flow CFD simulation and high-efficiency EC motor, it features high efficiency, low noise, high static pressure, long service life and intelligent speed control, with excellent overall performance.
Q2:What are the air volume and static pressure ranges of the fan?
A2:Available in dimensions from 250mm to 560mm, with a maximum air flow of 20710m³/h and a maximum static pressure of 2000Pa.
Q3:How is the noise control performance of the fan?
A3:The blade angle and profile are optimized based on aerodynamics and adapt to the ternary flow field, enabling lower operating noise at the same air volume.
Q4:What about the motor reliability and service life?
A4:The motor has IP54 protection, Class F insulation, and has passed 3-month 60℃ high-temperature test and 40,000-hour service life test, ensuring stable and trouble-free operation.
Q5:What control modes does the fan support?
A5:It supports various intelligent control modes such as 0~10V, PWM and RS485, which can accurately meet ventilation needs at different periods.
Q6:What are the main application scenarios?
A6:Suitable for AHU, FFU, IDC small cabinet, high voltage inverter cabinet, energy storage charging pile, commercial air conditioning, rail transit, etc.
Q7:What international and domestic certifications has the product obtained?
A7:It has passed a number of authoritative certifications including UL, CE, CCC, CQC, RoHS and REACH, meeting global market access requirements.
Q8:Is the product environmentally friendly?
A8:Compliant with RoHS and REACH environmental regulations, restricting hazardous substances, green and eco-friendly, suitable for clean, medical and other strict scenarios.
Q9:What sizes are available?
A9:Available in multiple sizes from 250mm to 560mm, flexible selection according to air volume, static pressure and installation space.
Q10:Can it be used in high temperature, high humidity or harsh industrial environments?
A10:With IP54 protection and high temperature resistance design, the fan has strong environmental adaptability and can operate stably in complex working conditions such as rail transit and inverter cabinets.
