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Dimensions
Section 12
11
Circuit breakers for direct
current applications (cont.)
24 V - 48 V direct current applications
Technical advice
Power supply protection by 24 V DC direct current generator
b
b
Earthed network:
v
v
Isc
1
= 10 kA / In = 40 A,
v
v
Isc
2
= 10 kA / In = 2/4/6 A.
Solution
iC60H 2P 40 A + iC60H 2P 2/4/6 A + PLC inputs + DC loads
The Phaseo network failure solution provides the installation (or part thereof) with a
24 V DC power supply in the event of a mains voltage failure:
b
b
throughout the mains failure, to ensure the continuity of service of the installation.
b
b
during a limited time to allow:
v
v
data to be backed up,
v
v
actuators to be put in the fallback position,
v
v
a generating set to be started up,
v
v
the operating systems to be shut down,
v
v
remote supervision data to be transmitted.
DB124282
In
1
In
2
+
AC
network
DC
network
Load 1
Input 1
Input 2
PLC
Input 3
Load 2
Isc
1
Isc
2