No, Siemens circuit breakers do not fit in Square D panels, regardless of whether the enclosure is a QO series or a Homeline series. Square D and Siemens design their equipment with entirely different proprietary bus bar thicknesses, physical depths, and mounting clip designs. Forcing a Siemens breaker into a Square D panel violates National Electrical Code regulations, creates a loose, high-resistance connection, poses severe fire hazards, and instantly voids all equipment safety certifications and warranties.
1 votes
Marked as accepted