3RA2446-8XF32-1AC2 SIEMENS

The 3RA2446-8XF32-1AC2 Siemens is a contactor assembly specifically designed for star-delta (wye-delta) starting of three-phase AC motors. This assembly is suitable for motors with a power rating of up to 90 kW at 400 V AC. It utilizes a 24 V AC coil operating at 50/60 Hz for reliable and efficient switching. The size S3 designation indicates the physical dimensions and current carrying capacity of the contactors within the assembly. It features screw terminals for secure and easy electrical connections. An electrical and mechanical interlock is integrated to prevent simultaneous closing of the main and delta contactors, ensuring safe operation. The contactor assembly includes 3 normally open (NO) and 3 normally closed (NC) auxiliary contacts for control and signaling purposes. This configuration allows for versatile integration into various motor control circuits. The robust design and high-quality components ensure long-lasting performance and reliability in demanding industrial applications. This contactor assembly provides a complete solution for star-delta starting, simplifying installation and reducing wiring complexity.