Siemens 3RK1100-1CQ20-0AA3 Soft Starter Module

Siemens 3RK1100-1CQ20-0AA3 is an AS‑i compact digital I/O module (K45 digital) for AS‑Interface networks, delivering four digital outputs in a rugged IP67 package. It provides 4 DQ outputs rated up to 1 A at 24 V DC per output, with a total current limit of 3 A for all outputs, making it suitable for field wiring in harsh environments. The module uses four M12 sockets for field connections and is designed to be mounted on the Siemens mounting plates 3RK1901-2EA00 or 3RK1901-2DA00 (sold separately). The K45 digital I/O profile supports straightforward integration with AS‑Interface masters and slave devices, enabling compact, distributed I/O for sensors and actuators on automation lines. Typical applications include remote sensing, simple control of actuators, and status indication in industrial control panels, with the robustness of IP67 protection ensuring reliability in dirty or wet environments. This part is cataloged under Siemens' AS‑i I/O family, and the variant 3RK1100‑1CQ20‑0AA3 corresponds to AS‑Interface compact digital I/O with four outputs and M12 field wiring, commonly used as an expansion or remote I/O node in smaller industrial setups. Note that the mounting plate and any auxiliary hardware must be ordered separately to complete the installation.