Can tandem breaker be used in a Mini Power-Zone (MPZ) packaged power supply?

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Issue:
Mini Power Zone Transformers have a load center that can be filled with user placed circuit breakers

Product Line:
LV Transformers

Environment:
Applies to Mini Power Zone Transformers from SquareD/Schneider Electric

Cause:
Mini Power Zone Transformers use QO or QOB type breakers

Resolution:
Tandem breakers are NOT permitted for use in MPZs. Standard breakers can be used. MPZ's use QO breakers. MPZB's use QOB breakers