Terminal Block Rating

Discussion in 'General Electronics Chat' started by philm01, Sep 10, 2014.

  1. philm01

    Thread Starter Member

    Mar 22, 2014
    33
    0
    Hello everyone,

    I have a quick question regarding the rating on terminal blocks. I am going to have a line with High voltage (2 KV Max) and low current 100 mA max. However, on digikey, the terminal blocks are rated for 600 V at 20 A. My question is this, since my power is much lower then what the terminals can handle, can I still use them or should I look at a different solution?
     
  2. #12

    Expert

    Nov 30, 2010
    16,257
    6,757
    No. Can't cheat on voltage. Must find 2000 volt rated method.

    Can't find a 2000 volt connector? I just use 5000 volt, fine stranded, test lead wire and run it out of the box with a squeeze type plastic strain relief gizmo.
     
    Last edited: Sep 10, 2014
  3. philm01

    Thread Starter Member

    Mar 22, 2014
    33
    0
    Darn. I need a connector for board to wire connections and wire to wire connections. Although, having them all board to wire isn't a bad idea. Either way. I have been looking on digikey and come up very short. Any ideas where I can get one?
     
  4. #12

    Expert

    Nov 30, 2010
    16,257
    6,757
    A few minutes on www.mouser.com comes up with a maximum of 750 volts. This level of quality just isn't hobby stuff. That is probably why I failed when I needed it and just went with the 5KV test lead wire.

    Anybody else?
     
  5. Lestraveled

    Well-Known Member

    May 19, 2014
    1,957
    1,215
    The contact is rated for the current, the insulation around the contact is rated for the voltage. You could use a simple connector like a banana plug and mount it in fiberglass or some other insulator.
     
  6. subtech

    Senior Member

    Nov 21, 2006
    123
    4
    I doubt you will find anything @ Digi-key rated above 600V.
    Once you get to 1KV and above, you will likely have to deal with the medium/high voltage folks.
    Have you looked/searched for GE or ABB products?
     
  7. ISB123

    Well-Known Member

    May 21, 2014
    1,239
    527
    You would need power distribution blocks which you probably cant order in small quantities and I'm not sure how much they cost.
     
  8. philm01

    Thread Starter Member

    Mar 22, 2014
    33
    0
    l right guys, thank you very much for your input!
     
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