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Mini Power Zone (MPZ) primary main breaker sizing
Applies to Mini Power Zone (MPZ) Transformers by SquareD/Schneider Electric
Main breakers for Mini Power Zone (MPZ) Transformers are sized per NEC 450-3b
The primary mains supplied with an MPZ can be replaced by a lower ampacity breaker of the same voltage & AIC ratings and style. Care should be taken not to install a new, lower ampacity breaker which will allow nuisance tripping due to Transformer inrush.
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