Siemens 3AH41 Operating Instructions Manual page 41

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2013-08-28
The unassigned auxiliary switch terminals are wired up (as shown) with the 64-pole
plug bottom.
Normal auxiliary switch
a)
No wiring required if
a) 2nd shunt release Y2 available
b) Undervoltage release Y7 available
Fig. 52 Example – auxiliary switch terminals
System wiring
Circuit-breaker wiring
System wiring
Fig. 53 Sample switching operation for connection of the undervoltage release Y7
Extended auxiliary switch
b)
Tripping via
NC contact
Description
Tripping via NO con-
tact
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