What this load feeder is and what it includes
The Siemens 3RA8511-1KE10 is a fully assembled intelligent load feeder reversing starter from the SIRIUS 3RA8 family, rated for motor currents from 1.2 to 12 A at voltages up to 690 V AC with type of coordination 1. It ships as a pre-configured unit consisting of a 3RC7141-1KE10 base unit, a 3RV2311-1KC20 circuit breaker, and two 3RT2017-2BB42 contactors — everything needed for a reversing motor start in one order code, frame size S00, designed to mount directly into a Siemens ET 200SP distributed I/O system.
The S00 frame size and the included ET 200SP base unit mount this load feeder onto the ET 200SP backplane bus, integrating the reversing starter into the distributed I/O network without separate point-to-point motor control wiring. The breaker provides short-circuit and overload protection coordinated with the contactors, so the assembly meets type 1 coordination for motor branch circuits.