WSR Series-IE4

Synchronous Reluctance Motor

Technical Characteristics:

Frame Size (mm)


Power (kW)


Rated Voltage (V)


Frequency (Hz)

50(1500r/m), 100(3000r/m)

Speed (r/m)

3000, 1500

Number of Poles



B3, B35, B5, B14, B34

Protection Class

IP55 or above

Insulation Class

F or above

Temperature Rise




Cooling Method


  • Product Detail

Wonder WSR Series are easy to service and cost-efficient with low rotor power losses and improved bearing life. While having good efficiency at nominal load, its partial load efficiency is better than traditional induction motors, which is important in variable speed applications when full output is not required.

Compared with traditional induction motors, Wonder SynRM is complimented by series of advantages. Since there’s no windings on the rotor, WSR motors are able to run without rotor copper loss and rotor heating, which improves operational efficiency and security. Besides, without damping on the rotor, the motor can respond quickly.

In comparison to PM motors, WSR Series feature lower cost, because no permanent magnet materials are adopted. And they are suitable for extreme environment, since there’s no need to worry about the situation that permanent magnet may vanish at high temperature.

With general frame size, Wonder WSR Series can serve as ideal replacement of traditional motors when the efficiency can comply with IE4 or even better.

The motors of which the output is 11kW and below adopt integrated design and are suitable for water pumps, fluid transmission machines, etc.


Main Tech Specifications:

  • Frame Size: 71-225mm
  • Output Power: 0.55-45kW
  • Max. Torque: 110% rated torque
  • Speed: 3000, 1500r/m
  • Poles: 4
  • Frequency: 50Hz at 1500r/m, 100Hz at 3000r/m
  • Protection Class: IP55 or above
  • Insulation Class: F or above
  • Cooling Method: IC411/IC416



  • Electrical Vehicles; Electrical Cars; New-energy Vehicles
  • Water Treatment
  • Chemical % Metallurgy
  • Smelt Industry
  • Steel Plants
  • Energy
  • Transportation
  • Construction
  • Mining
  • Textile


  • Water Pumps Motors
  • Motors for Generator Set
  • Hoists Motors
  • Wind Turbine Motors
  • Hydraulic Motors
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  • Textile Machines Motors
  • Conveyor Motors
  • Motors for Automobiles

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Send A Message
Send A Message
If you are interested in our products and service, or other information about Wonder, leave a message please. We will give you feedback within 24 hours.