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Device Statuses - Siemens 3RB12 Instructions Manual

Solid-state overload relay
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Operation
4.3

Device statuses

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

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