3RB2143-4EB0 SIEMENS

The 3RB2143-4EB0 is a Siemens overload relay designed to provide comprehensive motor protection within a 25 to 100 Ampere range. This particular model is classified as size S3, making it suitable for a variety of motor applications. It offers adjustable tripping classes from 5 to 30, allowing users to fine-tune the protection characteristics to match specific motor requirements and application demands. Mounting is simplified through direct contactor mounting, saving space and reducing installation time. The main circuit connections utilize screw terminals, ensuring a secure and reliable electrical connection. Auxiliary circuits also employ screw terminals for easy integration with control systems. The relay 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 equipment damage. This overload relay is an essential component for safeguarding motors against overloads, phase failures, and ground faults, ensuring reliable and efficient operation.