The Siemens 3RK1911-0BA30 is an ECOFAST power connection line: a 5-meter, 5-conductor cable (each 4 sqmm) terminated on one side with a HAN Q8/0 connector, ready to plug into an ECOFAST distribution box or motor starter. It's a field-wiring drop for decentralized automation — think motor power and brake circuits on a conveyor or assembly line, where the ECOFAST system replaces point-to-point cabling with a pre-terminated, IP65-rated plug-and-run architecture.
The 5 x 4 sqmm conductor cross-section handles the power and brake wiring for typical ECOFAST motor starters (up to around 4 kW at 400 V, depending on cable length and ambient). The 5-meter length is a common drop from the distribution box to a motor — long enough for most machine-mounted starters, short enough to avoid voltage drop issues on a 400 V line. The single-side HAN Q8/0 termination means the connector end plugs into the ECOFAST module; the other end is unterminated, ready for a motor terminal box or a field-installed connector.