No, you cannot legally or safely use a General Electric (GE) circuit breaker in a Siemens electrical panel. GE and Siemens design their respective load centers with entirely different proprietary bus bar interfaces, physical dimensions, and mounting clip geometries. Forcing a GE breaker into a Siemens panel violates National Electrical Code regulations, creates a loose and high-resistance connection, poses severe arcing and electrical fire hazards, and instantly voids all equipment warranties and UL safety listings.
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