The Siemens 3RK1911-0BF10 is an ECOFAST power connection line — a pre-terminated cable assembly for distributing power to field devices in an automation network. It uses 7 conductors of 2.5 sqmm each, terminated on both ends with HAN Q8/0 connectors, and is cut to a 1.5 m length.
The 1.5 m length and double-sided HAN Q8/0 connectors make this a ready-to-install drop for connecting an ECOFAST distribution block to a motor starter or I/O module. The 7 x 2.5 sqmm conductor count handles power and signal in one jacket, reducing field wiring time on a panel or machine build.