Motor-protective circuit-breaker
PKZ2 – operating principle schematics

Indication by auxiliary contacts [t-head1-pg]

Circuit-breaker with auxiliary contact and trip-indicating auxiliary contact.

Example: PKZ2/ZM-... + NHI11-PKZ2 + AGM2-11-PKZ2

   

For differential fault indication.

   

E1: Circuit-breaker On
E2: Circuit-breaker Off
E3: General fault, Overload tripping
E4: Short-circuit tripping
   


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