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1-in Generator interlock kit

Square D 1-in Generator interlock kit

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Compatible with a Square D QOC4OU?


Hello, The QOC40U is the catalog number for the cover. In order to identify if your load center can accept an interlock kit, you need to provide the catalog number and series of the load center. The FA274608 article in our FAQ system can help you identify those numbers in your load center. Regards.

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