AS-i add-on module with one free input and one free output
The Siemens 3RA6970-3D is a SIRIUS AS-i mounting module that provides one free external input and one free external output for the AS-Interface bus. It uses screw-type terminals for auxiliary and control circuit wiring, with a recommended tightening torque of 0.5 to 0.6 N·m and a stripped length of 7 mm. The module is rated IP20 on the front with finger-safe touch protection per IEC 60529, and operates in ambient temperatures from -20 °C to +60 °C with 10 to 90 % relative humidity.
DIN-rail footprint and panel integration
Dimensions are 78 mm deep, 45 mm wide, and 50 mm high — the 45 mm width occupies roughly 2.5 standard 18 mm DIN-rail spacing units, so check the rail allocation before adding this module to an existing AS-i drop. The module is reference-coded K per DIN EN 61346-2.