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Will a QO342MQ225, 3-phase load center or QO342MQ225RB, 3-phase load center accept a QOT tandem or QO tandem circuit breakers?

No, they will not. The QO 3-phase load centers do not accept tandem circuit breakers. This is a 42 space/42 circuit load center, and will accept full size QO branch breakers only.

CTA-ID : 2042852
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