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Old 02-20-2018, 07:24 PM   #1
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AC breaker for 75 CHB trawler

Any ideas what the main incoming AC breaker would be for a CHB circa 1975?

Im working to polish up my panel and the POs breaker doesnt look to authentic to me.

Thanks,
Dave
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Old 02-20-2018, 07:51 PM   #2
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I don't have a clue but would bet that the main is of the same make as the other breakers in the panel. That might be a good place to start. Carling Technologies hopefully.
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Old 02-20-2018, 08:08 PM   #3
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Don't know for sure in your case but usually the mfgr. info is on the breaker side. Take a look at the main breaker and the sub circuit breakers and if they are all the same mfgr. then the breaker is likely original.

I see 4 mounting holes in the face plate. DO they match the mounting holes in the breaker face. If they do then the breaker is likely original.

A different breaker mfgr. would likely have used a different screw pattern.
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Old 02-21-2018, 11:19 AM   #4
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The switch on my boat has an adapter plate to mount the breaker.
If you are looking to replace the breaker, get the name and numbers off
the breaker and check online. Did a search some time ago and found it.
Didn't need one at that time so I didn't save the info.
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Old 02-25-2018, 02:30 PM   #5
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Thanks folks. The manufactures are different for the Main & sub breakers. Oddly, the main breaker mounting holes are same spacing as those in the panel but the breaker is too small to screw right into them or fill the gap by itself.

I turned it sideways and lodged it in the space and think I will use Milt's suggestion and make an adapter plate to tidy up the panel
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