Thermal overload relay 2.8...4.0 A for motor protection size S00, Class 10. Main circuit connection: spring-loaded terminal, auxiliary circuit: spring-loaded terminal, manual-automatic reset. The SIRIUS 3RU2 thermal overload relay provides current-dependent protection for consumers with normal starting against excessive heating due to overload or phase failure. This series is particularly flexible and cost-effective. Worldwide approvals (e.g., IEC and UL/CSA) and applications in explosion-hazardous environments (ATEX or IEC Ex) are standard. Available with various setting ranges for the overload release. They come with screw or spring-loaded connections for quick, maintenance-free, and vibration-resistant installation, as well as for standalone use. The accessories are compatible across all sizes from S00 to S3. Simple, efficient, always up-to-date - the SIRIUS system modular concept.