Description
Product Name | LONGWELL High CFM Centrifugal Air Blower – 5000 CFM Industrial Ventilation & Pellet Stove |
Types | 140mm AC 115V/230V single inlet high-pressure forward centrifugal fan without housing |
Voltage Ranges | 230V |
Frequency | 50/60 Hz |
Diameter | 140 mm (impeller diameters) |
Motor Types | BLEC External Rotor Motor |
Speed Control | 0-10V Signal / PWM / RS485 (Optional) |
Max. ambient temp. | -25°C～+60°C |
Certifying | All necessary certifications suitable for USA & Europe: ETL, UL, CE, RoHS, ISO19001, ISO14001, and BSCI |
Protection Level | IP44, IP54, IP55 |
Electronic Protection | Current limiting protection, over-temperature protection, over-current protection, Locked-rotor protection, soft start |
Working & Storage | Operating temperature: -25~60℃; Operating humidity: 0~85% RH Storing temperature: -25 ~ 70℃; storing humidity: 0 ~ 95 % RH Applicable altitude range: <1000 m |
Balancing | According to JB/T 9101-1999 requirements G6.3 |
Product Standards | LVD EN60950-1; EMC EN61000-6-3, EN61000-4-2, EN61000-4-3 |
Mainly Applications | AUH/Air Purifier/Server Cooling & Ventilation/Grow Tent/Medical Equipment/Ventilation System/Equipment Cooling/refrigerator, etc.; ventilation fan cooling; ventilation exhaust fans |
Ningbo Longwell Electric Technology Co., Ltd.
Trusted by Business Partners: GREE, BYD, Carrier, Midea, Systemair, LG, FRICO, Daikin, SIEMENS, YORK, etc.
Go Further with LONGWELL
Centrifugal Fans | High-quality Motor | 0-10V/PWM/RS485 | High Air FLOW | Highly customizable
– High-Pressure Customized Impeller Design. (Patented impeller designed CFD (Computational Fluid Dynamics);
– OEM with your ventilation equipment perfectly;
– Original manufacturer with professional engineer team to offer suitable fan & blower solutions;
– Widely applications which the maximum airflow level can be up to 26000 m³/h (air pressure up to 3300 Pa)
Voltage Input: 110V/230V/380V/400V. LONGWELL centrifugal fans are workable in 12V/24V/48VDC, 115/230/380VAC & EC.
Speed Control System: 0-10V / PWM / RS485 (DC/EC Motor) or 1-2-3 Speeds (AC Motor)
133, 175, 190, 220, 225 mm (Impeller Diameter)
Air Performance: 250 – 1600 m³/h (100 – 1100 Pa)
Application: Air purifier, HRV, Fresh Air system, Air exchanger, etc., with 0-10v/PWM/RS485 Modbus
250mm – 355mm Backward curved centrifugal fan & blower
Air Performance: 1000-8000 m³/h (100-1800 Pa)
Application: Air exchanger, Ventilation Units, FFU, clean room, etc., with 0-10v/PWM/RS485 Modbus
400mm-630mm EC Motorized Centrifugal Fan (Backward Curved)
Air Performance: 3500 – 26000 m³/h (400 – 2200Pa)
Application: AHU (Air Handling Unit), Clean Room, FFU (Fan Filter Unit) with PWM/RS485 Modbus
LONGWELL—A professional manufacturer of HVACR, Ventilation fans & Blowers & Motors
Different Types of EC Fans：
EC fans come in various types, with bladeless EC fans being particularly popular due to their portability. These bladeless EC fans are compact and do not require installation on the ceiling, making them ideal for small spaces.
EC fans come in various types, with bladeless EC fans being particularly popular due to their portability. These bladeless EC fans are compact and do not require installation on the ceiling, making them ideal for small spaces.
How to Choose an EC Fan？
When choosing an EC fan, consider factors such as quality, blade design, and lighting features. For instance, green EC fans range in size from 6 inches to 12 inches, catering to different needs. Therefore, select the fan type that best suits your specific requirements. Bladed EC fans also come in various sizes and styles. Whether you are buying EC fans for adults or children, you can find a wide selection of small and portable EC fans on Alibaba.com.
EC Plug fans (PLENUM centrifugal fans & blower)
80W-5500W POWER input.
Air Performance: 3000-25000 m³/h Air flow, up to 3300Pa (static air pressure)
O-10V/PWM & MODBUS RS485 Protocol
The Professional’s Choice for LONGWELL Cross Flow Fans
High-quality motor | 0-10V/PWM | High Air FLOW | Highly customizable
Longwell is a manufacturer of HVAC fans, blowers, motors, and components, as well as water purifier pumps and home appliances, established in 1990 and equipped with highly advanced testing and production facilities.
Manufacturing companies typically purchase Longwell Co., Ltd. as OEM solutions or as aftermarket replacement parts for HVAC, FCU, FFU, and AHU systems. Customers can select from the large variety of preexisting products developed by Longwell, including but not limited to:
As a direct source manufacturer with robust 0-to-1 R&D capabilities, Longwell goes beyond standard models. We provide comprehensive OEM and ODM customization for all types of industrial fans, motors, and specialized accessories. Partnering directly with our factory ensures you receive highly competitive pricing, rigorous quality control, and rapid delivery cycles tailored exactly to your project specifications.
Ready to discuss your custom project? Connect with our engineering and sales team today:
● Contact Us Now: Click Here
● Email: sales@longwellfans.com
● WhatsApp: +86-18358274663
FAQs :
Q1.Why the Ec centrifugal fan is much efficiency than Ac centrifugal fan ?
– Longwell EC fans always operate in the correct direction ;
Operate on either 50Hz or 60Hz;
Operate on a wide voltage range(200-277Vsingle Phase&380-480 Vthree phase );
Operates much cooler-longer life ;
Less heat for a refrigeration system to handle (increased refrigeration COP),30 % average energy saving compared to AC technology ;
Q2. Does Longwell provide any speed control options for EC fans?
Yes, Longwell can provide some speed regulator solutions according to the customer’s requirements, such as. The RM-ECi controller is for use with the full range of ebm-papst EC fans. Powered by the 10VDC output from the motor, it provides infinitely variable, manual speed control between 0% and 100%. It can control multiple fans running at the same speed
– Stepless control knob for infinitely variable speed setting
– Cable entries 4xM16 or M20
– 4mm mounting holes
Q3. How do we connect fan unit to our application? Is there a wiring diagram?
Please check the speed control of your application first ( is it PWM or 0-10V , LONGWELL’s all series of Centrifugal fans support 0-10V or PWM and RS485 internet Protocol )
for more details please contact us for professional engineer service
Q4. Life span of this kind of Centrifugal fans ?
Longwell EC external rotor motor surpasses efficiency class IE4, magnets with no rare earths, maintenance-free ball bearings (sealed) with long-term lubrication, theoretical nominal service life of at least 40,000 hours of operation, installation with horizontal and vertical motor shaft; soft start, integrated current limitation. Integrated electronics, quiet commutation logic; 100 % speed controllable; control signal 0-10 V DC / PWM; tach output.
Q5. Are there any other AC DC EC centrifugal fans options or solutions for selection ?
Yes ,sure .
LONGWELL is a professional manufacturer of fans, blowers , motors and components for heating ,venlation, air conditioner and refrigeration applications ,specialist in centrifugal fans, axial fans, AC /BLDC cross flow fans, single / double forward curved fan BLOWERS ,AC / BLDC/ECM motors as well as industrial fan blowers, inline duct fans , Poultry ventilation fans ( AC / DC /EC ) , etc. Please check below photos for reference :
Longwell as a known and trustworthy DC cross flow fan Supplier in China , we assure you the best product quality and service.
If you are looking for DC cross flow fans for your manufacturing applications or electronic devices, do go through the features and specifications of our various models of DC cross flow fans. In case you require any further information or have technical queries, you can contact us directly at :
Ningbo Longwell Electric Technology Co.,ltd @Version.2025
Contact us for more details and special discount for New customers only !!!
Why Choose Longwell?
Longwell is a manufacturer of HVAC fans, blowers, motors, and components, as well as water purifier pumps and home appliances, established in 1990 and equipped with highly advanced testing and production facilities.
Manufacturing companies typically purchase Longwell Co., Ltd. as OEM solutions or as aftermarket replacement parts for HVAC, FCU, FFU, and AHU systems. Customers can select from the large variety of preexisting products developed by Longwell, including but not limited to:
As a direct source manufacturer with robust 0-to-1 R&D capabilities, Longwell goes beyond standard models. We provide comprehensive OEM and ODM customization for all types of industrial fans, motors, and specialized accessories. Partnering directly with our factory ensures you receive highly competitive pricing, rigorous quality control, and rapid delivery cycles tailored exactly to your project specifications.
Ready to discuss your custom project? Connect with our engineering and sales team today:
● Contact Us Now: Click Here
● Email: sales@longwellfans.com
● WhatsApp: +86-18358274663
Trusted by top Brands
Longwell’s efforts make us advocates of sustainable development and leaders in the high-efficiency fan and motor industry.
Worldwide Marketing of LONGWELL
Exhibitions & Offices | AHR_USA, MCE_Italy, CRH_China, ISH_China/German, HARFKO_Korea, etc.
Over 15 Years Ventilation Fan & Motors Production Experience
Longwell’s expertise in fan manufacturing can be traced back to 1998. It is a leading fan manufacturer dedicated to providing global customers with efficient and controllable fan solutions. The company is committed to addressing the global energy crisis and creating a healthier, more comfortable, and environmentally friendly living environment for people.
Longwell has a strong team of research and development professionals dedicated to studying innovative fan technologies. We adopt advanced EC (electronically commutated) motor drive technology to achieve high efficiency and precise airflow control. Through EC motor-driven fans, our customers can enjoy higher quality and more reliable airflow, achieving significant breakthroughs in energy utilization. We continuously promote the development of fan technology to meet the demand for high-tech and high-efficiency solutions.
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