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Courtesy “B” circuit breaker Legend 40.5

Discussion in 'Ask A Hunter Owner' started by fero, Apr 15, 2019 at 3:49 PM. Add this thread to a FAQ

  1. fero

    fero

    Joined Jan 15, 2010
    41 posts, 1 likes
    Hunter Legend 40.5
    CA Victoria
    Hello again,
    The CB on the main switch panel suddenly will not close (when I try to close it the small indicator led will light but switch lever will spring back). The only light I could associate for sure with this CB is the gooseneck light over nav table. Any similar experience?
    Thanks.
     


  2. Rich Stidger

    Rich Stidger

    Joined Feb 10, 2004
    2,882 posts, 313 likes
    Hunter 40.5
    US 1997 h40.5 Bristol, RI
    Need more info. Exactly which breaker and what is it's label?
    I think a CB that will not reset means one of two things. Either it is grossly overloaded and instantaneously trips while you are trying to reset it, or it has become defective.
    Try this- Turn off the main 50A 12V CB. Then reset the breaker in question. If it remains closed with no current passing, then I think that the subject CB may not be defective. Then turn on the main 50A breaker. If the subject CB then trips, I would suspect that the subject breaker is grossly overloaded. If overloaded you then need to find the cause of the load.
    The other possibility is that the CB trips at a much lower current than it's rating, in which case it is still defective.
    And lastly, when you try to energize the CB, what does the ammeter on the panel show? If the answer is lots of current then that further supports the theory that the CB is grossly overloaded. The fact that the small red LED lights up tells me that power is flowing through the CB to the loads.
     


    Rick D likes this.
  3. fero

    fero

    Joined Jan 15, 2010
    41 posts, 1 likes
    Hunter Legend 40.5
    CA Victoria
    Thanks Rich for good comments. I followed them with results indicating the faulty CB (not closing with main CB open, no change in amps). Do you know the make and model of a replacement? I have not yet opened the main panel, any pointers on changing the CB would be greatly appreciated. The label says. Courtesy B and it is the 5th from the top the left column of DC breakers. Regards
    Frank
     


  4. Rich Stidger

    Rich Stidger

    Joined Feb 10, 2004
    2,882 posts, 313 likes
    Hunter 40.5
    US 1997 h40.5 Bristol, RI
    Frank,

    I have replaced some of my CB's with the Blue Sea units. Be sure to get the toggle color to match your other CB's. If convenient, remove the defective one and take it with you to purchase the replacement. But I don't think you will have any problem matching it. I suspect that it is probably a 10A unit, but the rating is labeled on the side which can't be seen until removed.
    The tips for replacement are to turn off the main 12V breaker and disconnect any 120V A/C power to the boat to be certain that nothing is "live". You will have a 2-3 wires to loads on the breaker- be sure to count and identify so you get all back correctly. One wire will be to the LED indicator and the others to lights onboard.
    Be careful not to drop the screws!
    My panel is labeled a bit differently- see attached. I think my "Courtesy Lights" also feed the U-shaped lighting around the companionway.

    2013_0515_123432.JPG
     


  5. Rick D

    Rick D

    Joined Jun 14, 2008
    6,694 posts, 213 likes
    Hunter Legend 40.5
    US Long Beach, Shoreline Marina, CA
    +1 Rich. I have replaced several CBs and added a couple of spares which you may wish to consider. On mine, there is a bar that has to come out to release one of the switches. I also used Blue Seas; slightly different but fitment is fine.
     


  6. fero

    fero

    Joined Jan 15, 2010
    41 posts, 1 likes
    Hunter Legend 40.5
    CA Victoria
    Thanks Rich and Rick for your help.
     


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    Hunter Ad Bot

    Joined Oct 27, 2016
    0 posts, 12 likes
    US Seattle
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