On Mini Power Zone products, is the size of the enclosure on an MPZB that uses the QOB bolt on breakers the same as an MPZ that uses the QO plug on breakers?

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Issue:
Size difference for the enclosure for MPZ vs. MPZB Mini Power Zone products

Product Line:
LV Transformers

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

Cause:
The MPZ products use a QO Load Center Interior, the MPZB products use an NQ Panelboard Interior

Resolution:

No. The MPZB devices for use with bolt on breakers are larger than those that use the plug on breakers. The top transformer section is the same size on both, but the bottom load center section is taller for the bolt on type units.