The Siemens 3RK1405-1SG15-0AA2 is an ASIsafe SlimLine module in the S45F design, providing one safe output relay (2-channel), two standard digital inputs, and two standard digital outputs, all communicating over the AS-Interface protocol. The module draws up to 200 mA from the AS-Interface bus and requires an external 24 V DC supply (AUX POWER) for the outputs.
This part is in product phase-out and is now only available as a spare part, per the manufacturer's notice.
Integration into a panel
Addressing is via the front addressing socket, and the ID/ID2 code is set to A/E. Built-in watchdog, short-circuit protection, and induction protection reduce external component count. Status LEDs show I/O states (yellow), auxiliary power (green), and AS-Interface/diagnostics (green/red).