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Old 10-15-2018, 10:28 AM   #1
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Grand Banks circuit breakers

I need to replace a few 12 volt circuit breakers from my boat a 1990 Grand Banks 32. Does anyone know where to find replacements?

Thanks

AJG
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Old 10-15-2018, 12:32 PM   #2
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Depending on the year of your boat you probably have Eaton Heinemann type AM1 magnetic-trip circuit breakers that act as starter circuit switches (15 or 20Amps). AM1 single pole breaker's physical size is 3/4in wide x 2 7/16 long with two studs on rear for electrical connection. The stud size is also standard and I think it has 10-32 threads. The breaker is designed for panel mounting and mounts in a 3/4 x 1 7/16in rectangular hole. Airpax manufactures an identical breaker designated UPL1. Carlile and some others also manufacture the breaker but I don't remember the type.

They can be purchased from an electronics supply house as a Heinemann type AM1 BREAKER OR EQUAL. You need to know the trip amperage. The amperage trip-time curve is not critical for this use. Breaker size can be found on either the trip handle or on the side of the breaker.

Good luck!
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Old 10-15-2018, 12:44 PM   #3
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Quote:
Originally Posted by allengb32 View Post
I need to replace a few 12 volt circuit breakers from my boat a 1990 Grand Banks 32. Does anyone know where to find replacements?

Thanks

AJG

They should be available from Defender. There are 2 common physical sizes (A and C), check the specs and measure what you have.


https://www.defender.com/category.js...328&id=2289980



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Old 10-16-2018, 01:39 PM   #4
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Thank you to everyone..... off to Defender in New London.
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