3RA2446-8XE32-1NB3 SIEMENS

The 3RA2446-8XE32-1NB3 from Siemens is a complete contactor assembly specifically designed for star-delta (wye-delta) starting of three-phase motors. This assembly offers a power rating of 90 kW at 400 V AC, making it suitable for demanding industrial applications. It incorporates IO-Link communication for advanced diagnostics and control capabilities, enabling seamless integration into modern automation systems. The contactor assembly features an AC-3 utilization category, ensuring reliable performance in motor starting applications. It operates on a 20-33 V AC/DC control voltage, providing flexibility in power supply options. The size S3 contactors utilize screw terminals for secure and robust electrical connections. An electrical and mechanical interlock is included to prevent simultaneous closing of the main and delta contactors, enhancing safety and preventing short circuits. Furthermore, it has 3 normally open (NO) and 3 normally closed (NC) auxiliary contacts for flexible control circuit integration, along with an integrated varistor for surge suppression, protecting the contactor from voltage spikes.