3RB3143-4XD0 SIEMENS

The 3RB3143-4XD0 is a Siemens overload relay designed to provide comprehensive motor protection within a 32 to 115 Ampere range. This particular model is a Size S3 relay, making it suitable for medium-sized motors and applications. It offers adjustable tripping classes from 5E to 30E, allowing users to fine-tune the protection characteristics to match the specific motor and application requirements. Mounting is simplified through direct contactor mounting, reducing installation time and complexity. The main circuit connections utilize screw terminals for secure and reliable power connections, while the auxiliary circuit employs spring-type terminals for quick and vibration-resistant control wiring. Users can select between manual, automatic, or remote reset options, providing flexibility in responding to overload events. This overload relay is engineered to safeguard motors against thermal overload, phase failure, and phase imbalance, extending motor lifespan and minimizing downtime. Its robust design and adjustable settings make it a versatile solution for a wide range of industrial motor protection applications. Furthermore, it helps to prevent costly motor repairs and production interruptions.