3RH1921-1HA31 SIEMENS

The 3RH1921-1HA31 auxiliary switch block from Siemens is a crucial component designed to enhance the functionality of motor contactors within sizes S0 to S12. Compliant with EN 50012 standards, this 4-pole auxiliary switch block provides reliable switching performance in various industrial applications. Featuring a 3 NO + 1 NC contact configuration, it offers versatile control options for signaling and interlocking circuits. The screw terminal design ensures secure and straightforward electrical connections, simplifying installation and maintenance procedures. This auxiliary switch block is specifically engineered to seamlessly integrate with Siemens motor contactors, providing extended capabilities and improved operational efficiency. Its robust construction guarantees durability and long-term reliability, even in demanding environments. The 3RH1921-1HA31 auxiliary switch block enables precise control and monitoring of motor circuits, enhancing overall system performance and safety. It is an ideal solution for applications requiring dependable auxiliary switching functions in motor control systems. By adding this auxiliary switch block, users can expand the control capabilities of their motor contactors, optimizing their performance and ensuring reliable operation.