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Folks,
Does anyone have access to UL standard 508, part XIII? This is the section pertaining to "definite purpose contactors".

I am of the belief that these contactors can only be used as part of an engineered system and are not approved for field use other than replacement of OEM components. I would like to know for certain.

Thanks
 

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The funny part is I'm of a similar belief, but I took a quick look at 508 and while there are separate testing standards for contactors labeled "definite purpose," I didn't see anything that plainly said they had to be used as part of a listed assembly.

I'll have to read it more thoroughly when I have a second.

Are DP contactors UL listed or UL recognized? That would be the answer right there.
 
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