3RB3123-4NB0 SIEMENS

The 3RB3123-4NB0 from Siemens is an advanced overload relay designed to provide comprehensive motor protection. With an adjustable current range of 0.32 to 1.25 A, it is suitable for motors in size S0, ensuring precise and reliable operation. This overload relay offers selectable tripping classes from 5 to 30, allowing users to customize the protection characteristics based on specific application requirements. Installation is simplified through contactor mounting, and both the main and auxiliary circuits utilize screw connections for secure and dependable wiring. The device features a manual-automatic-reset function, providing flexibility in responding to overload events. Furthermore, it incorporates internal ground fault detection, enhancing safety and preventing potential damage. This overload relay is engineered to safeguard motors against overloads, phase failures, and ground faults, ensuring prolonged motor lifespan and minimizing downtime. Its robust design and comprehensive protection features make it an ideal choice for various industrial applications requiring reliable motor protection. The compact design allows for easy integration into existing motor control systems.