Siemens SENTRON 3VA27 - CB Bus Module

Circuit diagrams
10.1 Circuit diagrams of accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
256 Manual, 10/2018, L1V30499596002-01
10.1.7
CB bus module
Breaker Connect module (external power supply), communication modules, digital I/O
module IOM040, position signaling switch PSS for guide frame (PSS COM)
3WL10 / 3VA27 SE + 3VA27 toggle
Digital I/O module IOM040, COM041 (PROFINET), COM043 (Modbus TCP), COM044
(IEC 61850), COM040 (PROFIBUS), COM042 (Modbus RTU): Of these three modules, a
maximum of two modules can be installed.