Siemens – 3ZX1012‑0RA16‑1AA1 – SIRIUS Star–Delta Starter Function Module

The Siemens 3ZX1012‑0RA16‑1AA1 is a functional module for use with SIRIUS 3RT series contactors. It enables star–delta (wye–delta) motor starting by providing programmable time‑based switching between S00, S0, S2, and S3 transition modes. This module plugs directly onto appropriate contactors—e.g., 3RT201–3RT204—and simplifies wiring in compact motor control circuits.

Although discontinued, it remains supported via Siemens industry documentation.  

 Key Features

• Model: 3ZX1012‑0RA16‑1AA1

• Function Modules: Supports star‑delta start types S00, S0, S2, or S3 mode selection

• Compatibility: Designed for SIRIUS contactor sizes 00–3 (e.g., 3RT2xx series)  

• Shock/Environment: Suitable for industrial panel environments; IP20 rated  

• Mounting: Snap-in assembly directly onto 3RT contactors; captive screws or spring clips ensure firm mounting  

• Operating Temp: –40 °C to +70 °C (functional at –55 °C, storage up to +80 °C)