It really depends on whether this breaker was "classified" by U/L for
use in that panel. C/H has taken the effort to get some of their
breakers evaluated in other panels by U/L. The manufacturer of other
panels, particularly Square D still does not recognize that
Assuming the breakers used _are_ listed for use in the subject panel,
That they may fit doesn't necessarily mean they've been qualified for
the application. OP can determine whether the particular breaker is
listed or not for the application by looking up the data sheet for them
(or the simple expedient would have been to ask). W/O specific models,
can't answer the question specifically.
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