3RA2444-8XF32-1AL2 SIEMENS

The 3RA2444-8XF32-1AL2 Siemens contactor assembly is specifically designed for star-delta (wye-delta) starting applications, commonly used to reduce inrush current during motor startup. This assembly is suitable for AC-3 duty, with a power rating of 75 kW at 400 V, making it ideal for heavy-duty industrial applications. It operates on a 230 V AC control voltage at 50/60 Hz, ensuring compatibility with standard power supplies. The size S3 indicates its compact design relative to its power handling capability. The assembly features screw terminals for secure and reliable electrical connections. An electrical and mechanical interlock is integrated to prevent simultaneous operation of the main and delta contactors, enhancing safety and preventing short circuits. It includes 3 normally open (NO) and 3 normally closed (NC) auxiliary contacts for versatile control and monitoring functions. This configuration allows for comprehensive integration into motor control circuits. The robust design and high-quality components ensure long-term reliability and performance in demanding environments.