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olnoln 03-14-2010 01:09 AM

Identify circuit breaker
 
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Hi,

I'm in a house that is more than 50 years old, and the electrical panel says Square-D. One of the 20 amp single pole circuit breaker handle broke, and I took it out, and it has no markings, no manufacturer nor part number on it. The panel is nearly 4" in length. I went to Orchard Supply Hardware, Lowes and Home Depot and they all said they have nothing like it. Might be an obsolete thing.

Can anyone help identify it? Anyone know where I can find a replacement?

If I can't find a replacement, what can I do? I sure hope I don't have to replace the entire panel.

Thanks a lot.

kbsparky 03-14-2010 07:49 AM

That's an X-O breaker. The buss bars are round -- they look like copper water pipes. You can orient the breaker on the right side, or the left, depending on which leg of the panel you want to connect to.

Here is one place to start looking for these. Be warned, they ain't cheap. :huh:

Scuba_Dave 03-14-2010 09:15 AM

If you have a Square D panel you should be installing Square D breakers

Was this breaker installed in the Square D panel ?
Or a sub-panel ?

brric 03-14-2010 09:38 AM

An X-O is a Square D breaker.

kbsparky 03-14-2010 12:07 PM

Quote:

Originally Posted by brric (Post 414258)
An X-O is a Square D breaker.

Mostly true, however Square D sold the line to Cutler-Hammer when they developed a newer style of breaker line.

Some XO breakers have the Cutler-Hammer label on them because of this.

Jupe Blue 03-14-2010 06:12 PM

We have a good source for recycled and/or obscure breakers here in Portland. I don't know if they do mail order but the link is

http://oregonbreaker.com/

BTW, I'm not affiliated with them in any way except that my shop buys from them when we need an oddball breaker.

olnoln 03-15-2010 11:11 PM

Thank you so much for the helping me to identify it. Checking google does confirm that it looks like the XO120. But, oh boy, are they expensive for used ones, but I guess that can't be helped since they are now obsolete.

The bus bars are actually two flat bars, about .5in wide (didn't really measure it).

Thanks so much everyone.


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