Description
2.7 Electronic trip unit
3VA molded case circuit breakers with UL and IEC certification
86
Manual, 01/2019, L1V30435333-01
ETU 3-series units
3-series electronic trip units are equipped with rotary selector switches. A description of the
operating principle of the rotary selector switches and operating instructions can be found in
chapter Guide to setting the tripping characteristic (Page 67).
Displays on ETU 5-series and 8-series units
5-series and 8-series electronic trip units have an LCD display. The displayed values are
refreshed once per second.
Note
The backlighting of the LED display is only active with an external voltage supply (e.g. by the
COM060 communication module, by the 24 V module or by the EFB300 External Function
Box).
The following table explains what the symbols in the display mean:
