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Can you put the QO-VH or QOB-VH breakers in a Mini Power-Zone (MPZ) indoor/outdoor packaged power supply?

Published date: 08 June 2020

Issue:
Can you put the QO-VH  or QOB-VH breakers in a Mini Power-Zone (MPZ) indoor/outdoor packaged power supply?

Product Line:
LV Transformers

Environment:
Applies to Mini Power Zone (MPZ) products by SquareD/Schneider Electric

Cause:
QO-VH Breakers are available that have high (22K) AIC levels

Resolution:
While the QO-VH breakers can physically be installed in the Mini Power-Zone (MPZ), there is no valid technical reason to do so.  The High AIC rated Mini Power-Zone's are only for the primary breaker that feeds the transformer. The MPZ is a UL listed device in which the available peak let through current of the transformer with an infinite source is less than 10,000 amps.  Thus, only 10kAIR rated QO and QOB  breakers are required.  Anything else is simply a waste of the customer`s money.


 


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