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Old 10-05-2012, 10:17 AM   #1
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What type of circuit breaker is this?


I have to replace a circuit breaker in a sub-panel. However, the breaker does not appear to be manufactured anymore. I see that there are places online to buy obsolete breakers, but I don't know what type of breaker this is and there are no markings on it. Here is a picture of the breaker. The dimensions are approximately 4" x 1.5" x 2".
What type of circuit breaker is this?-cb.jpg
I'm hoping someone here can identify this for me. If not, I will just replace the sub-panel.

Thanks for any help anyone is able to give me.

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Old 10-05-2012, 11:01 AM   #2
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What type of circuit breaker is this?


is there any markings on the switch side?

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Old 10-05-2012, 11:08 AM   #3
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What type of circuit breaker is this?


No, there are no markings other than the amperage (50A). I can post a picture of the switch side when I get a chance (probably not until tomorrow) but to me it looked the same as any other breaker.
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Old 10-05-2012, 11:09 AM   #4
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What type of circuit breaker is this?


better off to replace sub panel.
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Old 10-05-2012, 11:14 AM   #5
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What type of circuit breaker is this?


I agree with oleguy74. That side looks like it is made of cardboard.

Pros can weigh in but I haven't seen a breaker like that before when I looked at CH, Murray and Square D panels.

I think there was a post a week ago about someone who purchased a Square D subpanel for $50 which included few breakers.

Good luck
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Old 10-05-2012, 11:28 AM   #6
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What type of circuit breaker is this?


I've never seen anything like that. It almost looks like half a two pole breaker. Need a older sparky or someone that does extensive maintenance I would think.
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Old 10-05-2012, 11:53 AM   #7
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What type of circuit breaker is this?


It's an XO breaker. I think it was made by Square D many many moons ago. I would offer to sell you one but I'm not willing to take responsibility for the possibility of the breaker being bad.
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Old 10-05-2012, 12:39 PM   #8
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What type of circuit breaker is this?


Like K-Buz said, it's a square D XO. You can buy one from Bay Breakers.

http://www.baybreakers.com/catalog/search.html

Just select Square D and choose XO. Single pole, and whatever amps is on the handle.

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