Square D Homeline and Eaton (specifically BR or CL) circuit breakers are not interchangeable. While some manufacturers produce classified UL-listed replacement breakers for specific legacy load centers, standard Homeline and Eaton BR breakers have distinct physical locking clips and bus bar interfaces. Installing non-approved breakers across different manufacturer panels violates building codes, compromises the physical connection, creates severe arc-fault and fire risks, and voids the electrical warranty.
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