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Square D 9999BC-1 Interlock Kit
Square D 9999BC-1 Interlock Kit
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Description:
The Square D 9999BC-1 Interlock Kit is a field-installable accessory that provides a safe, code-compliant method to transfer power between a utility supply and an auxiliary source in compatible Square D panels. It includes the hardware and mounting instructions needed to install an interlock that physically prevents the main and generator disconnects from being operated at the same time, helping ensure you cannot backfeed or energize a dead bus. Typical applications include generator backup installations and selective interlock configurations for Square D load centers; always verify fitment with your specific panel model and refer to the factory catalog for recommended uses and installation guidelines.
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