Siemens 3RF2170-1AA06 Safety Relay Module 24V DC

Siemens 3RF2170-1AA06 is a single‑phase solid‑state relay from the SIRIUS 3RF2 family, built to switch high‑current AC loads with a 24 V DC control signal. The compact module is 22.5 mm wide and uses screw terminals for robust field wiring, supporting a load current up to 70 A. The main circuit accepts 48 to 600 VAC, while the control input is rated at 24 V DC, providing electrical isolation between control and power circuits. This device is designed for reliable on/off control of single‑phase loads such as heaters or motors in industrial automation panels, delivering fast switching with the intrinsic advantages of semiconductor relays. The 3RF2170‑1AA06 designation identifies a 1‑phase variant within Siemens’ 3RF2 lineup, and the part is commonly listed by distributors (including Mouser, RS Components, and TME) alongside other 3RF2 solid‑state relays, confirming its standing as a ready‑to‑use high‑current control solution in 24 V DC control systems. With Siemens’ naming and documentation, it integrates into existing Sirius component ecosystems, enabling consistent cross‑reference and replacement in established control schemes.