It ships as a complete unit consisting of a 3RC7140-1EE00 communication module, a 3RV2311-1EC20 circuit breaker, and a 3RT2017-2BB42 contactor — three components pre-integrated and tested as one orderable code. The assembly is sized for frame S00 and carries type of coordination 2, meaning the starter remains functional after a short-circuit fault up to its rated breaking capacity, with only the contactor needing replacement.
System fit and deployment context
This load feeder is designed to snap directly onto a DIN rail within a Siemens ET 200SP distributed I/O system, sharing the same backplane bus and 24 V DC control supply. The communication module handles PROFINET or PROFIBUS connectivity to the controller, so the entire motor starter is addressed and diagnosed over the fieldbus — no separate control wiring for start/stop or feedback. For an integrator wiring a panel, the 3RA8 assembly reduces point-to-point wiring to the motor power circuit and the ET 200SP bus connector.