Siemens SINOVA - External Transformer for Neutral Conductors (for ETU360 WJ)

Accessories
3.7 Accessories for the Electronic Trip Unit
3WJ Air Circuit breakers
Operating Instructions, 12/2022, L1V30828903001-01
91
Activating the electronic trip unit
To activate the electronic trip unit, press "N" and "G" simultaneously.
The electronic trip unit remains active until you press a different button.
This function can be used, for example, to test the signaling of the "T.U. Error" LED if the
status test ended with the fault "Electronic trip unit defective".
Subsequent steps
• Restore the setting values you noted down.
• Place the cover cap on test socket X25.
3.7.2 External transformer for neutral conductors (for ETU360WJ)
Note
Cables for secondary connection
The secondary connection cables from the neutral conductor transformer to the 3WJ
Circuit
Breaker must be twisted.
Article No.
Description
Article No.
Current transformers for 3-pole Circuit Breakers,
external neutral conductor with copper busbars
Size I
3WJ9111-0AA31
Size II
3WJ9111-0AA32
Current transformers for 3-pole Circuit Breakers,
external neutral conductor without copper busbars
Size I
3WJ9111-0AA21
Size II
3WJ9111-0AA22