Can the current Q-Frame (for example a QDL32200) main breaker fit into a older QO 3 phase load center in place of the old K-frame(like a KDL32200)?

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Can the current Q frame main breaker fit into an older QO, 3 phase load center in place of the old K frame?

Issue:
Previous design repair parts

Product Line:
QO three phase load centers

Resolution:
NO, the current Q frame will NOT work in the older QO, 3 phase load centers that used a K frame. The K frames are obsolete, no longer available with NO replacement.