Results 1 to 4 of 4

Thread: Low voltage NEMA3R transformer

  1. #1
    Join Date
    Aug 2010
    Location
    Texas
    Posts
    287

    Low voltage NEMA3R transformer

    I need a 480:120V, single phase, 1.5kVA transformer in a NEMA3R enclosure with lockable disconnect. So basically it is a 1.5kVA transformer with 2 primary and 1 secondary fuses in a NEMA3R box with a disconnect that can get locked out.

    Anyone knows if there is an off-the-shelf solution available?

    Thanks,
    "Because it's there!"
    George Mallory

  2. #2
    Join Date
    Aug 2004
    Location
    Northern illinois
    Posts
    16,857
    Quote Originally Posted by LMAO View Post
    I need a 480:120V, single phase, 1.5kVA transformer in a NEMA3R enclosure with lockable disconnect. So basically it is a 1.5kVA transformer with 2 primary and 1 secondary fuses in a NEMA3R box with a disconnect that can get locked out.

    Anyone knows if there is an off-the-shelf solution available?

    Thanks,
    I don't know if they are 3R but such things are sold for control panels. call your local supply house. they are usually referred to as transformer disconnects for some reason.

    here is a 500 va version. does not appear to be 3r though.

    https://www.grainger.com/product/1H7...180416173958:s
    Bob

  3. #3
    Join Date
    Nov 2014
    Location
    Miami, Florida, USA
    Posts
    120
    You can get it special order from square d for $3500 or so.

    Might want to go with fusible disconnect and separate dry transformer. Lot cheaper and quicker to get.

  4. #4
    Join Date
    Jul 2006
    Location
    San Francisco Bay Area, CA, USA
    Posts
    7,898
    All of the major suppliers have what's called a "Mini-Power Center" (Sq. D's term for it is Mini Power Zone) that is a 3R enclosed transformer that has a primary breaker and a small load center attached to it, and the breakers can have locking accessories added to them. Pre-packaged, ready to go. Smallest is 5kVA though and you have to let go of the fuse issue.

    Square D

    Eaton

    GE

    Siemens
    __________________________________________________ ____________________________
    Many people are shocked when they discover I am not a good electrician...

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •