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Reset; Reset Function With Free Trip - Siemens 3RB12 Instructions Manual

Solid-state overload relay
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Operation
4.5

Reset

When the
3RB12 has
tripped because
of
Test
*
Overload
*
Thermistor
Earth fault
*
If thermistor- and overload has tripped simultaneously, the longer reset
phase applies.
**
Bridge (B) is fixed to Y1 as delivered (see graphics section of Fig. V and VI).
Reset
function with
free trip
18
Note
The test with a test time of less than 5 s can be per-
formed during operation. In a fault-free state the outputs
remain unchanged.
Reset the overload relay after the following times by
briefly pressing
the test / reset
button
immediately
after 5 min
If the temperature has reached 5 K below the response
temperature
immediately
The protection functions are not impeded by holding
down the test/reset button.
Remote reset
(briefly press but-
ton at Y1-Y2)
3ZX1012-0RB12-1AA1
automatic-reset
**
(bridge
Y1-Y2)
not effective

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