Contactor question

Discussion in 'General Electronics Chat' started by D.Vesa, May 3, 2015.

  1. D.Vesa

    Thread Starter New Member

    May 3, 2015
    2
    0
    Hello ,
    A customer wants a 3-phase contactor for his future 3-phase motor pomp . His currently contactor broke but now he has a 1-phase motor pomp and in the near future he wants to change the 1-phase pomp with a 3-phase one.
    He asked me if he buys a 3-phase contactor , can he connect the 1-phase pomp to the 3-phase contactor ?
     
  2. #12

    Expert

    Nov 30, 2010
    16,321
    6,818
    yes. You can use one or two of the contactor channels without harming the motor or the contactor. When you need 3 phase control, just attach the third power wire to the contactor.
     
    Last edited: May 3, 2015
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  3. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,553
    2,375
    Do a search on ebay for Telemecanique, they are a nice product.
    You may have to review the existing overloads to see if they are suitable for the 1ph motor.
    The modern electronic O/L's have a range setting.
    Max.
     
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