3RU2126-4PB0 SIEMENS

The 3RU2126-4PB0 is a Siemens overload relay designed to provide reliable motor protection. It offers a current adjustment range of 30 to 36 Amperes, suitable for motors with corresponding full-load currents. This overload relay is classified as Size S0, indicating its physical dimensions and compatibility with similarly sized contactors and motor starters. It adheres to CLASS 10 tripping characteristics, providing a specific inverse-time response to overloads, ensuring quick tripping in the event of a fault. Mounting is simplified through direct contactor mounting, saving space and reducing wiring complexity. The main circuit connections utilize screw terminals for secure and robust connections, while the auxiliary circuit also employs screw terminals for easy integration with control circuits. The relay features a manual-automatic-reset function, offering flexibility in how the relay is reset after a trip. This allows for manual intervention or automatic resetting based on the application requirements. It protects motors from thermal overload, phase failure, and phase imbalance, extending motor lifespan and preventing costly downtime.