Siemens 3RK1911-1AF32 Field Bus Connection Module

Siemens 3RK1911-1AF32 Ecofast Hybrid Field Bus Connection is a two-channel ECOFAST hybrid interface designed to merge PROFIBUS fieldbus signaling with a separate power path, enabling a field-side IP65 to control cabinet IP20 transition with a single, compact unit. The 3RK1911-1AF32 variant is Conducting (Passive) and uses copper pin/socket field connections with Fast-Connect wiring, providing a non-regenerating link between the field and the control cabinet while forwarding both bus and supply signals. This device is part of Siemens’ ECOFAST Hybrid Fieldbus family and is intended for PROFIBUS DP transitions, consolidating bus and power into a single interface to simplify wiring, enclosure penetrations, and field installation in automation panels or machine environments. By combining two channels in one module, it supports efficient daisy-chaining and easier field wiring while preserving IP65 field-side robustness and IP20 cabinet-side accessibility, making it suitable for retrofits or new-panel deployments where PROFIBUS networks must bridge into harsher field environments.