The Siemens 3RK1911-0AG60 is an ECOFAST power bus cable, 5 x 4 sqmm, supplied in a 20-meter length and sold by the meter. This is the power distribution backbone for an ECOFAST field-installation system — the cable that carries 24 VDC and fieldbus power to remote I/O modules, sensors, and actuators on a machine or line.
Integration note for the panel builder
This cable is cut to length and terminated in the field — the 20-meter reel lets you pull exactly the run you need for a machine zone or cabinet-to-cabinet link. The 5 x 4 sqmm cross-section is sized for the current draw of a multi-drop ECOFAST segment; don't undersize the protective earth conductor when planning the bonding path. Terminate with the appropriate ECOFAST connectors (sold separately) to maintain the IP65/IP67 seal at the junction box.