Relay advice wanted

Discussion in 'Tech/Mech General' started by Bryan, Dec 9, 2009.

  1. Bryan

    Bryan

    Joined:
    Jul 19, 2007
    Messages:
    2,096
    Ratings:
    +342
    Hi all,

    I've got a little project in mind and want to ask you for help in finding a relay for it.

    I'm looking for a 3 pole double throw (3pdt) relay that will switch when 240v is present (and reset when not) and be capable of handling the current flow for a crt tv (20"), a dvd player and a sky+ box.

    Also, one of the poles will will only have a tiny current at much lower voltage connected but I'm hoping that a 240v relay will not have any issues if one of the poles is connected to a very low power circuit.

    I've seen this but I have no idea if it is suitable or good value etc. and I'm happy to be pointed in a better direction :)

    Suggested relay

    Bryan
     
  2. SandJ

    SandJ Funster

    Joined:
    Sep 14, 2007
    Messages:
    1,692
    Location:
    North Yorks
    Ratings:
    +749
    Bryan,

    Being the kind helpful person that I am, i looked at you post heading and thought:thumb:
    I can help, it was not till I read your post did I realise you were not talking about a Relay Race. :Eeek:
    So sorry I am unable to help you, good luck with project. :thumb:


    :ROFLMAO::ROFLMAO::ROFLMAO::ROFLMAO::ROFLMAO::ROFLMAO:
     
  3. hilldweller

    hilldweller Funster Life Member

    Joined:
    Dec 5, 2008
    Messages:
    29,621
    Location:
    Macclesfield
    Ratings:
    +37,613
    That is the suck-it-and-see one. 10A contacts can be poor at switching mill-amps. I'm guessing something like a video change over. You'll have to try and if you get interference or poor switching make that contact switch a better suited small relay, maybe a reed relay running off the 12V battery ( that's if it's in the MH ).
     
  4. Fatalhud

    Fatalhud

    Joined:
    Nov 26, 2009
    Messages:
    289
    Location:
    Nottingham
    Ratings:
    +1
    To be honest Bryan, thats the one I would try.
    Don't forget you will need the base as well

    Alan h
     
  5. pollensabob

    pollensabob Funster

    Joined:
    Jan 30, 2008
    Messages:
    183
    Location:
    West Sussex
    Ratings:
    +175
    Hi Bryan,

    Try RS Components UK RS online.com They stock a huge range of electronic relays etc. I use them a lot in my business.

    Bob
     
  6. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    32,836
    Location:
    YO11 2BD
    Ratings:
    +27,555
    Min Switching Voltage AC / DC:400V ac

    not sure if this means the voltage needed to power the actual switching seloniod coil is 400v AC.

    seems to me to be for a 3 phase 415v AC system to switch a secondary 240v ac or 30v dc circuit.

    could be wrong......i dont do 415v
     
  7. Fatalhud

    Fatalhud

    Joined:
    Nov 26, 2009
    Messages:
    289
    Location:
    Nottingham
    Ratings:
    +1
    The coil voltage is 240volt, it is just saying the contacts are capable of switching 415v.

    Alan H
     
  8. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    32,836
    Location:
    YO11 2BD
    Ratings:
    +27,555
    try your local "Electric Center"...used to be known as "William Wilsons"
    they'll be able to help.
     
  9. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    32,836
    Location:
    YO11 2BD
    Ratings:
    +27,555
    confusing........... Min Switching Voltage AC / DC:400V ac

    and the page said MAX 30v 10a dc :RollEyes:
     
  10. Reallyretired

    Reallyretired Funster

    Joined:
    Apr 27, 2008
    Messages:
    6,840
    Location:
    Eastbourne East Sussex
    Ratings:
    +5,343
    I use CPC a lot and they are pretty good and reasonably priced.:thumb:

    Are you going to tell us about the project then ? :winky:
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice