The Siemens 3RK1903-0AG00 is a TM-XB15 S24-01 terminal module for the ET 200S system. It provides the interface for a brake control module mounted on the right side of specific modules.
Integration Note
The terminal module occupies one slot position and provides the physical connection point for the brake control module — no additional wiring to the brake module itself is needed beyond what lands on the TM-XB15 terminals. The description explicitly excludes use with the XB2 F-DS1E-X and F-RS1E-X safety modules, so verify the adjacent module type before specifying.