View source for Breaking of the neutral conductor

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[[File:DB422335.png]]

(see {{FigRef|G68}})

The need to break or not the neutral conductor is related to the protection against indirect contact (fault protection).

== In TN-C scheme ==
The neutral conductor must not be open-circuited under any circumstances since it constitutes a PE as well as a neutral conductor.

== In TT, TN-S and IT schemes{{fn|1}} ==
In the event of a fault, the circuit-breaker will open all poles, including the neutral pole, i.e. the circuit-breaker is omnipolar.

The action can only be achieved with fuses in an indirect way, in which the operation of one or more fuses triggers a mechanical trip-out of all poles of an associated series-connected load-break switch.

{{footnotes}}
<references>
{{fn-detail|1|In some coutries the rules applied for TN-S are the same as the rules for TN-C}}
</references>
 
[[ru:Отключение нейтрального провода]]
[[zh:中性线的分断]]