Star-delta combination AC-3, 55 kW/400 V, AC 230 V 50/60 Hz, 3-pole, size S2, screw connection, electrical and mechanical interlocking, 3 S + 3 Ö integrated. The SIRIUS 3RA24 star-delta combination is designed for gentle starting of three-phase asynchronous motors. The 3RA24 star-delta combination is a tested and factory pre-assembled combination of three contactors 3RT2, which are already pre-wired and mechanically and electrically interlocked. The included function module with integrated control logic and time setting replaces the complete wiring in the control circuit. They are climate-resistant, globally approved (e.g., IEC and UL/CSA), and IE3/IE4 ready. The 3RA24 star-delta combinations are available with AC and DC actuation in sizes S00 to S3. They are offered in screw and spring clamp connection technology for mounting on a DIN rail or screw fastening. Additionally, variants for connection to IO-Link or AS-Interface are available. The accessories for the 3RT2 contactors are uniform across all sizes and can also be used for the contactor combinations. The 3RA24 star-delta combinations replace the proven series 3RA14. Simple, efficient, always up to date - the SIRIUS system modular concept.