can i use this relay for 220vAC?

Discussion in 'General Electronics Chat' started by rapsy, Mar 22, 2015.

  1. rapsy

    Thread Starter New Member

    Mar 22, 2015
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  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    It states maximum switching voltage as 220vdc so you should be OK for AC.
    Also the current capacity rating will depend on whether it is resistive or inductive load.
    Max.
     
    rapsy likes this.
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Since this relay is sold as a "signal" relay, and is specified only for DC operation, I would worry about using it to break a circuit that could apply 220*1.414 = 311Vpeak across the opening contacts...
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    The DC rating is usually the most critical out of the two, AC-DC.
    Also when you break a DC inductive load a voltage much higher than the applied V is inclined to appear.
    Max.
     
  5. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    I would agree with you except for the word "Signal" that appears in the OP's linked data sheet...
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
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    I checked the signal relays I have here and they are rated at 1.5Kvac at the contacts.
    The one the OP shows lists 2Kvac insulation between contacts and coil.
    Max.
     
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