Motor-protective circuit-breakers
PKZ2 – operating principle schematics

Use of the undervoltage release in the Emergency-Stop circuit [t-head1-pg]

Motor-protective circuit-breaker with auxiliary contact and undervoltage release.

Example: PKZ2/ZM... + NHI22-PKZ2 + UHI-PKZ2

 
All poles of the Emergency-Stop circuit are isolated from the mains supply in the event of a power failure.
S1: Emergency-Stop
S2: Emergency-Stop


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