Description   
2.5 Electronic trip unit ETU600 
  3WA1 air circuit breaker 
96  Equipment Manual, 02/2023, 92310000002-06 
2.5.3.3  Start screen 
 
Maximum instantaneous value of phase current with respect to overload protection 
When the electronic trip unit is activated, the start screen appears. 
It is also displayed with dimmed backlighting after the time set in menu item 5.5.5 if 
none of operating keys F1 to F4 have been operated. 
When the backlighting is dimmed, briefly pressing one of the operating keys increases 
the brightness of the backlighting.