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  Customised motors
 
     
  For applications where thermal protection is required, Grundfos supplies motors with a built-in bimetallic thermal protector or a temperature-controlled PTC thermistor.  
 
 
 
  PTC sensor or thermal switch
 
 
                 
  Single phase   Four-pole   High efficiency   Explosion-proof  
                 
  Motor heater   Multiple plug   CSA/UL approved   Thermal protection  
                 
  Oversized/undersized   Special voltage   Enclosure class   Mounting options  
                 
  Metal terminal box