Applications
3.4 Applications with closing coil and shunt trip
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
213
Remote switching protection, controlled via the communications module
The simplest method of preventing switching via communication is to activate remote
switching protection on the communications module.
The communications module has an RSP connection which can be used to enable or
prevent remote switching. You can find information about the RSP connection in Chapter
X62 connector (Page 154).
The following switching operations are possible depending on the position of the -S4
switch.
• -S4 open: RSP active (on communications module with role A)
The circuit breaker can be electrically closed via S1 and opened via S2.
Switching via communication is not possible.
• -S4 closed: RSP not active (on communications module with role A)
The circuit breaker can be electrically closed via S1 and opened via S2. Switching via
communication is also possible.
Control via voltage supply to the magnetic system
Electrical switching can also be controlled by connecting the control supply voltage to
the CC-COM closing coils and the first ST-COM shunt trip.
Combinations of local switching and remote switching via communication are illustrated
in the two examples below.
Prerequisite:
The S4 switch (RSP) on the communications module must be closed in order to be able
to use switching via communication.
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