The Siemens 3RA6823-0AC is a SIRIUS triple extension block — essentially a three-slot expansion base for compact load feeders. The three slots accept up to three compact feeder modules, letting you build a multi-motor group from a single mounting point.
The 135 mm width and 197 mm height mean it occupies three standard 45 mm-wide DIN spaces, so factor that into your enclosure fill.
Environmental and protection specs
Rated IP20 on the front — finger-safe touch protection per IEC 60529, suitable for enclosed panels where no water spray is present. Vibration resistance covers 4 to 5.8 Hz at 15 mm amplitude and 5.8 to 500 Hz at 2 m/s² over 10 cycles; shock rated at 6 m/s² semi-sinusoidal, 10 ms, three axes both directions.