The Siemens 3RK1901-1NR11 is an AS-Interface M12 branch cable assembly — a transition from the AS-i flat cable to an M12 socket, with a 1 m cable and an angled M12 connector. It carries the AS-i signal and power (26.5–31.6 V per the AS-Interface specification) but no auxiliary Uaux supply. Rated for 4 A continuous, it feeds a single actuator or sensor node on the bus.
Washdown-ready deployment
IP67/68/69K means the connector body and cable entry survive high-pressure hot-water washdown — food-and-bev or chemical processing lines where standard IP67 connectors fail. Screw fixing secures the branch point to a bracket or panel; the insulation-piercing method taps the flat cable without stripping it.
Cable routing constraint
The manufacturer note states the cable must not end in the feeder — meaning the free end of this 1 m pigtail cannot terminate inside the AS-i power supply or gateway housing. It must connect to a device or a termination cap. Plan the drop length accordingly.
Listed as current production.
