Compatibility with a Cutler-Hammer panel depends entirely on which specific product series was originally installed in your home. Cutler-Hammer panels generally fall into two categories: Type CH panels, which require narrow proprietary Eaton Type CH breakers with chocolate-brown handles, and Type BR panels, which accept Eaton Type BR breakers (the direct continuation of Westinghouse and Bryant designs). Never mix these series or use unapproved third-party brands.
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