Replacing AC Breaker on GB32

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grandbanksbayfield

Senior Member
Joined
Nov 22, 2017
Messages
143
Location
U.S.
Vessel Name
Solvogn
Vessel Make
Grand Banks 32
I need to replace the breaker-switch for my AC. The one in the panel has a thread pattern of about 3/4 inch by 2 and 1/8 inches on dipole breakers. All the new ones I see on the market, like Blue Sea, etc. are 3/4 by about 1 and 5/8 inches. Anybody know where i can find the original sized breaker? Or is this panel so obsolete that I will have to do some microsurgery on the slot and go with the modernization or standard, whichever it is? The new 16000 BTU Webasto calls for a 25 amp slow breaker-switch. Would it be okay to go with a 30 amp if I can find it? The load wire going to the unit is #10, so it seems okay to use a 30. The AC runs at 12.5 amps according to the specs.
 
Heinemann is now owned by Cutler Hammer. You can order your breaker new by the part#. Call Heinemann direct or go to CH electrical distributor.

Be about $100+ because of Canadian taxes.
 
Anything with a motor should always have the overcurrent protection rated by the manufacturer. They base it off of the locked rotor current, and using too large a size even if your wiring can handle it can result in fires if the rotor is locked because the overcurrent protection will never trip. Find a 25 Amp breaker.
 
Breakers

Heinemann is now owned by Cutler Hammer. You can order your breaker new by the part#. Call Heinemann direct or go to CH electrical distributor.

Be about $100+ because of Canadian taxes.

Checked them out and they have a lot of stock. When I get the breaker out of the box I can get more info. For right now, i am having a lot of problems finding the ones with longer screw pattern.
 

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