Operation
16
3ZX1012-0RB12-1AA1
En
glis
h
4.3
Device statuses
Five minutes after overload tripping, the 3RB12 can be
reset to operating mode.
Type
3RB12..-.....
3RB12..-...0.
3RB12..-...2.
3RB12..-...1.
3RB12..-...3.
Status
Operating indic.
Auxiliary switch
Device ready for
operation
no overload
not tripped
Ready LED:
Green steady
light
95/96, 05/06 closed
97/98, 07/08 open
Changed auxiliary switch statuses
Overload alarm
Overload LED:
Red flashing
light
*
05/06 open
07/08 closed
Overload trip/
thermistor trip
Overload LED:
Red steady light
95/96 open
97/98 closed
Earth fault alarm
Gnd. Fault LED:
Red steady light
05/06 open
07/08 closed
95/96 open
97/98 closed
*
The overload LED flashes when the limit tripping current is reached and
indicates that tripping is imminent.
Status
Mode indicator Auxiliary
switch
Device not ready
for operation
control voltage
failure
Ready LED:
Dark
Monostable version of device:
95/96, 05/06 open
97/98, 07/08 closed
Bistable version of device:
Switching statuses are retained
