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Eaton JDB 150A Frame & 225A Trip Unit Combination

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    Eaton JDB 150A Frame & 225A Trip Unit Combination

    I am trying to figure out if this breaker frame trip unit combination should be possible or is this an anomaly.

    150A Frame

    225A Trip Unit

    The thermal seems to be fixed & only the magnetic (instantaneous) is adjustable. The base amps is printed on the Trip Unit. So what is the ampere rating on the frame for ?

    Here is a link to some information

    https://rexel-cdn.com/Products/Eaton...E-75139B8D2493
    Attached Files
    Advise is a dangerous gift, even from the wise to the wise.

    #2
    Something odd going on there!

    The frame is ostensibly 250A, as it is for a JD-anything.

    The CATALOG number (JD2225) is for a 225A T-M breaker. "Factory Assembled Circuit Consisting of Frame, Trip Unit and Terminals"

    The LABEL says it is a 150A breaker. But that does not look like the Eaton factory label.

    The TRIP UNIT is 225A

    This looks to me to be a "remanufacturerd" breaker, maybe from a breaker broker or surplus shop, cobbled together from separate parts that FIT together, but were never meant to BE together in that format.
    __________________________________________________ ____________________________
    Many people are shocked when they discover I am not a good electrician...

    I'm in California, ergo I am still stuck on the 2014 NEC... We'll get around to the 2017 code in around 2021.

    Comment


      #3
      I believe that the frame size is 250 amps but it's a mystery as to why is says 150 amps. The catalog number seems to indicate that it's a 225 amp CB.
      Rob

      Moderator

      All responses based on the 2017 NEC unless otherwise noted

      Comment


        #4
        Mislabeled Breaker

        Originally posted by SG-1 View Post
        I am trying to figure out if this breaker frame trip unit combination should be possible or is this an anomaly.

        150A Frame

        225A Trip Unit

        The thermal seems to be fixed & only the magnetic (instantaneous) is adjustable. The base amps is printed on the Trip Unit. So what is the ampere rating on the frame for ?

        Here is a link to some information

        https://rexel-cdn.com/Products/Eaton...E-75139B8D2493
        The Frame will always be >=Trip rating
        It appears the Frame (based on CAT#) is 225A.
        The trip is typically a bolt on device that reduces the "max" amperage to a lower setting. You can have a 150A trip that is then dialed down to 100A based on the adjustable settings on the trip unit.

        Comment


          #5
          Originally posted by WA_Sparky View Post
          The Frame will always be >=Trip rating
          It appears the Frame (based on CAT#) is 225A.
          The trip is typically a bolt on device that reduces the "max" amperage to a lower setting. You can have a 150A trip that is then dialed down to 100A based on the adjustable settings on the trip unit.
          Yes, but that catalog number on the front is for a FIXED TRIP that is FACTORY assembled and that is not an adjustable trip unit. The odd part is that the catalog number on the front of the breaker as well as the trip unit do not jive with the text saying that it is 150A.
          __________________________________________________ ____________________________
          Many people are shocked when they discover I am not a good electrician...

          I'm in California, ergo I am still stuck on the 2014 NEC... We'll get around to the 2017 code in around 2021.

          Comment


            #6
            Misprints in Eaton catalogs are not unknown.

            Comment


              #7
              Originally posted by jaggedben View Post
              Misprints in Eaton catalogs are not unknown.
              On the devices as well.

              From what I have read the trip unit is in charge. That makes the breaker a 225A Fixed Thermal with adjustable magnetic trips for each pole.

              Probably a misprinted label. Quality will decide if they want to scrap or contact somebody. I'll try to stay in the loop on this one, so I can let you all know what happen.

              Thank you all for your help. The main thing I wanted conformation on was that all three amp ratings should match.
              Advise is a dangerous gift, even from the wise to the wise.

              Comment


                #8
                Originally posted by SG-1 View Post
                On the devices as well.

                From what I have read the trip unit is in charge. That makes the breaker a 225A Fixed Thermal with adjustable magnetic trips for each pole.

                Probably a misprinted label. Quality will decide if they want to scrap or contact somebody. I'll try to stay in the loop on this one, so I can let you all know what happen.

                Thank you all for your help. The main thing I wanted conformation on was that all three amp ratings should match.
                Did this breaker come with a test report?

                Comment


                  #9
                  Originally posted by zog View Post
                  Did this breaker come with a test report?
                  No, and since it does not have a serial number I do not think there will be one available.
                  Advise is a dangerous gift, even from the wise to the wise.

                  Comment


                    #10
                    Originally posted by SG-1 View Post
                    No, and since it does not have a serial number I do not think there will be one available.
                    I agree with Jraef that this looks like it was cobbled together by a used equipment dealer that wasn't sure what they were doing. Any "reconditioned" breaker should come fully tested with a report. I would suggest getting this one tested.

                    Comment


                      #11
                      maybe just a typo.
                      Bob

                      Comment


                        #12
                        Found a second unit with the same issue. Then two more were found in stock with the same issue. After a phone call or two we are getting four new labels.
                        Advise is a dangerous gift, even from the wise to the wise.

                        Comment

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