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Motor-protective circuit-breaker
PKZM01, PKZM0 and PKZM4 – operating principle schematics |
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| Motor-protective circuit-breaker
with auxiliary contact and trip-indicating auxiliary contact |
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PKZM01(PKZM0-...)(PKZM4...) + NHI11-PKZ0 + AGM2-10-PKZ0
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| For differential fault indication |
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(Overload or short-circuit)

E1: circuit-breaker ON
E2: circuit-breaker OFF
E3: general fault, overload release
E4: short-circuit release |
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