1556LE008146B
Maintenance and replacement of the backup battery
When the low or missing battery icon appears, the sentinel Energy trip unit backup battery
must be replaced.
To do so:
Low or missing battery icon
Action Illustration
1 If required, remove the
seal to open the trip unit
transparent door.
ATTENTION
If the backup battery is discharged, the electronic trip unit will be unable to display the
cause of any tripping unless an external 24 V DC SELV power supply is connected or an
external battery is connected on the USB-C port of the electronic trip unit.
I Max 960A
100
80
60
40
20
%Ir IN I1 I2 I3
120
1
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