3RU1146-4FD0 SIEMENS

The 3RU1146-4FD0 is a Siemens overload relay designed to provide comprehensive motor protection. With an adjustable current range of 28 to 40 Amperes, this relay is suitable for motors requiring precise overload protection. It belongs to size S3 and operates under CLASS 10 tripping characteristics, ensuring a balance between quick response and preventing nuisance tripping. The relay is designed for direct contactor mounting, simplifying installation and saving space within the electrical panel. Main circuit connections are established via reliable screw terminals, while the auxiliary circuit utilizes convenient spring-type terminals for secure and vibration-resistant connections. Users can select between manual, automatic, or remote reset options, offering flexibility in responding to overload events. This overload relay protects motors from damage due to excessive current draw, extending their lifespan and minimizing downtime. Its robust design and versatile features make it a dependable choice for various motor control applications. The 3RU1146-4FD0 enhances the reliability and safety of motor-driven systems.