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What is the maximum earth loop Impedance Zs value for the NG125 miniature circuit breakers?
The maximum earth loop Impedance figures can be found on the attached pdf file.
In order to comply with BS7671 Ammendment 3: 2015, the figure in the attachment should be multiplied by the Cmin .95 factor -

Zs Calculation

Released for:Schneider Electric UK

Attachment(s)
ZS FiguresMCB.pdf [5.22 KB]
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Range:
Acti9 NG125
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Range:
Acti9 NG125