• Ofan Electric Co., Ltd
    Mark Aramli
    OFAN' products are so reliable ,good quality,This is much more durable High-end product
  • Ofan Electric Co., Ltd
    Jimmy K.y.yap
    OFAN advanced design,good supervision of production , good package
  • Ofan Electric Co., Ltd
    Andry Andika
    OFAN' Pay attention to details,good production line,durable
Contact Person : Walter Chen
Phone Number : +86-13760806200
WhatsApp : +8613760806200

Electric DC Centrifugal Fan Over Temperature Protection Function 133mm

Place of Origin China
Brand Name OFAN
Certification CE,UL,3C
Model Number LD133N-48D3-00
Minimum Order Quantity 1
Price $10~30/pcs
Packaging Details 65*65*70
Payment Terms L/C, T/T
Supply Ability 10000pcs20days

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Product Details
Rated Voltage 48V Rated Speed 4500RPM
Air Flow 764m³/h Power 6.24W
Current 1.3A Operation Voltage 36-56V
High Light

brushless dc fan


dc centrifugal blower

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Product Description

133mm DC Centrifugal Fan With 48v Fresh Air System PA66 Air Purification


Power Rated
Part NO. VDC VDC A W RPM m³/h CFM mmH2O dBA
LD133N-48D3-00 48 36~56 1.3 62.4 4500 420 210 41.5 70
LD133N-48D3-01 48 36~56 0.8 38.4 4000 360 185 36.8 65
LD133N-24D3-0 24 16~28 1.6 38.4 4000 360 185 36.8












Brushless dc fan use a permanent magnet excitation, eliminate the loss of induction motor excitation currents; realizing the small loss an high

efficiency characteristics


Compared with the frequency control of induction motor, brushless dc ,motor is simpler and more controllable, easy to perform control

The components, such ac inverters etc, whose capacity is low, and circuit are simpler, the cost lower than ec blower’s


OFAN provides the most comprehensive services, includes: product diversification, against the clock delivery, documents support, and technical consulting service. “Customer is partner” is key to our success; ”Win the contract for customer” is our ultimate goal.



Protection: over voltage, over temperature, over current, phase loss detection, communication failure


The basic interface: 0-10V/PWM, RS485/Modbus, 4-20Ma


The basic parameters of field programmable: Maximum speed, minimum speed, maximum power, maximum current,resonance avoid


Constant air pressure controlling function


Embedded design


Electro magnetic compatibility (EMC)



How do I know which model I should choose

Please tell us the fans pressure and ofan and size of fans’ diameter you need. We will study and suggest you the right model.


Can we buy a sample for testing?

Sure, you are welcomed to buy a sample before mass order.


EC Fan Introduction

EC(Electronically Commutation) motors, as built-in DC inverter driver three phase AC external rotor permanent magnet synchronous motors, its efficiency and low noise is considered to be ultimate fan energy technologies.


Core Technology Of EC Fan Controller

1. Sensorless vector control software

2. High-performance power electronic circuits

3. Security and reliability design(Standards, Certification)

4. Embedded design


Electric DC Centrifugal Fan Over Temperature Protection Function 133mm 0