User Manual

Description
2.4 Electronic trip unit ETU600
3WA Air Circuit Breakers
72 Equipment Manual, 05/2021, 92310000002-03
LED
Meaning
Description
INFO
Display of status information
Off Normal operating status (no unacknowledged
trip)
On Warning is present
On Error is present
DAS+
DAS+ maintenance mode
Off DAS+ not activated
On
DAS+ activated
L, S/I, G, EPF
Last trip cause
Off Normal operating state
On
Tripping due to:
L
Long time LT
S/I
Short circuit ST, dST or INST
G
Ground fault GF
EPF
Enhanced protective function
Details on tripping are shown on the display and stored in the trip log of the ETU600. If the ETU600 is
not activated, the trip cause can be displayed by pressing the Query button.
Additional information on the display of error messages can be found in Chapter Error display
(Page 133).