Siemens SENTRON 3VL series - Use in Communication Environment

Application planning
5.10 Use in communication environment
3VL IEC molded case circuit breakers
74 System Manual, 11/2013, 110 0110 - 02 DS 03
5.10
Use in communication environment
The 3VL molded case circuit breakers with communication-capable ETUs can be integrated
into PROFIBUS or MODBUS RTU networks via the COM20 / COM21 communication
modules.
Network topology
Network topology
Note
When using communication
-capable ETUs, the left-hand accessory compartment X2
contains an auxiliary switch and an alarm switch.