AC / EC / DC backward curved centrifugal fan

$10.00 - $40.00
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50 Pieces
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Company Information

Ningbo Longwell Electric Technology Co., Ltd.

CN Manufacturer
Response Time
Response Rate:
US$ 270,000+
3 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram,PAYPAL
Supply Ability: 100000 Piece/Pieces per Month
Blade Material: Plastic
Insulation: B/F
Warranty: 1 YEAR
Place of Origin: China
Motor type: external rotor motor
power input: 115v /220v/24V/48V
After-sales Service Provided: Online support,Overseas service center available
Amb,Temp: -20 to +60℃
Approvals: CE,CCC
Direction: Clockwise
Certification: CCC,CE,CSA,ROHS,UL,Other
Bearing: Ball Bearing
Brand Name: LONGWELL
Mounting: Free Standing
Impeller material: Propylene with glass fiber reinforced
Type: Centrifugal Fan,backward curved centrifugal fan
Applicable Industries: Hotels,Garment Shops,Building Material Shops,Manufacturing Plant,Machinery Repair Shops,Food & Beverage Factory,Farms,Restaurant,Home Use,Retail,Food Shop,Printing Shops,Construction works ,Energy & Mining,Food & Beverage Shops,Advertising Company
Voltage: 115v /220v/24V/48V
Packaging Detail: High strength cartons with polyfoam , and packed on pallet .

AC DC EC backward curved centrifugal fan

Product Overview


>> Backward / Forward Curved Centrifugal Fan with AC / DC / EC external brushless Motor

  • Mainly used in grain drying and and greenhouse ventilation. These are also common in air pollution control as well as heating, ventilation and air conditioning (HVAC) systems.
  • EC backward curved motorized EC impeller is a superbly crafted, precision balanced air-moving device that features superior performance and compact design.
  • By combining the efficiency of a backward curved centrifugal impeller with the advanced technology of an electronically commutated external rotor motor, new standards for energy savings and performance have been achieved.

AC DC EC backward curved centrifugal fan

Specifications :


133mm - 630mm (or Customized)


AC Input: 210v,220v,230v,380v,400v

DC Input: 12v,24v,48v

EC Input: 210v,220v,230v,380v,400v (or Customzied)


Up to 2300W (or Customized)

SpeedUp to 4000RPM (or Customized)
Air FlowUp to 8000m³/h (or Customized)
Impeller Material Plastic / Aluminum Alloy / Galvanized Metal
Speed control Speed Controller (AC) or PWM/0 - 10V Input (DC EC)
Storage Temp-20 ℃ ~ + 70℃
Operating Temp-25℃ ~ + 60
Wire DiagramContact us for details

AC DC EC backward curved centrifugal fan


General Characters ( Only EC / DC, not suitable for AC motor fan ) :

Life Expectance


At 40℃ room, humidity 15%~65%RH.
Direction of Rotation


seen on rotor
Direction of Air FlowAll around
Insulation ClassClass B
Insulation Resistance

50 Mega Ohm minimum at 1000VDC

Between frame and (+) terminal
Motor Protection

Locked rotor protection;

Polarity protection;

Automatic restart capability.
Speed ControlControl input 0~10VDC / PWM
Protection TypeIP44
Voltage Output+10VDC (Can be used as speed control input voltage or FG signal pull-up voltage,and need to be circumscribed in series with a pull –up resister, details as connection diagram.)
Dielectric Strength10mA maximum at 1500VAC 50Hz five second
Between frame and (+) terminal
Signal OutputFG (Frequency Generator)
Product Application

 Application :

Our range of small ,midium and large sized centrifugal fans are suitable for many areas . Include but limited to :

  • Electronic cabinet cooling
  • EC fan array
  • Clean room modules
  • Heat exchangers
  • Air filtration
  • Military HVAC
  • Medical appliances
  • Plastic extrusion
  • Fume hoods
  • Pharmaceutical equipment
  • Semiconductor industry
  • drying systems
  • aeration applications

AC DC EC backward curved centrifugal fan

Buying Guides

AC DC EC backward curved centrifugal fan

Packaging & Shipping


Shippment and Delivery :

  • Sample :7~10 days ;
  • Bulk order : 18~23 days after receiving order information . 
  • Package : Standard exporting package , carton with pallet . ( package can be customized ) 
  • Shippment : Air express ,sea shippment , EXW ,LCL ,etc all available .

AC DC EC backward curved centrifugal fan


Company Information

LONGWELL is a manufacturer of HVAC fans, blowers , motors and components , as well as water purifier pumps and home appliances , established in 1990 , equipped with high advanced testing and production facilities .

Longwell co.,ltd are typically purchased as OEM solutions by manufacturering companies or as aftermarket solutions and replacement parts for HVAC,FCU,FFU,AHU system .

Customers can select form the large variety of preexisting products developed by Longwell including but not limited to :

  • AC motorized centrifugal fans & blowers ;
  • Brushless DC/EC motorized backward / forward centrifugal fans & blowers ;
  • cross flow fan / wheel / blower with motor ( plastic or metal metal ) ;
  • axial fans / blades with plastic or metal material ;
  • Shaded Pole Motors ;
  • Duct fans ;
  • Parts or assemble parts or repair parts for HVAC,AHU,FCU,FFU,etc.

AC DC EC backward curved centrifugal fan

Contact information

AC DC EC backward curved centrifugal fan