No, you cannot use an Eaton circuit breaker (whether Type BR or CH) in a Square D electrical panel (neither QO nor Homeline). Schneider Electric and Eaton design their load centers with entirely different proprietary bus bar thicknesses, physical enclosure depths, and mounting clip geometries. Forcing an incompatible Eaton breaker into a Square D panel violates electrical codes, creates a loose, high-resistance connection, and poses severe fire hazards.
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