3RV1 circuit breakers
SIRIUS System Manual
GWA 4NEB 430 0999-02b
2-15
Warning
Fuse monitoring using the 3RV16
11-0DB10 circuit breaker is not permissible
in feeders with power control regulators where a DC feedback with higher
values can occur in the event of a fault.
Auxiliary switch func-
tions
The circuit breaker used for fuse monitoring can be equipped with a trans-
verse or lateral auxiliary switch (Section 2.4, Accessories). The auxiliary
switch reports the tripping of the circuit breaker and thus the failure of the
fuse and initiates an all-pole disconnection of the problem circuit by a corre-
sponding switching device.
Safety sign
Note
When fuses used for isolation purposes are monitored, a warning sign must
be put up next to them. Via the parallel-switched voltage circuit of the moni-
toring facility, voltage may get into the area that is supposed to be isolated if
the monitoring equipment has not bee disconnected.
We suggest the following text for the warning:
Voltages
The 3RV16
11-0DB10 circuit breaker is suitable for fuse monitoring in the fol-
lowing voltage ranges:
• 24 to 690 VAC, 50/60
Hz
• 24 to 250 VDC, 100 to 600 VDC
Switching capacity I
CN
100 kA
Circuit diagrams
Figure 2-9: Circuit diagrams of circuit breakers for fuse monitoring
Attention
To ensure isolation, also disconnect
the fuse-monitoring device with the
item designation ............
U
e
AC 24 ... 690V DC 24 ... 250V DC 100 ... 600V
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