Overload relay 160...630 A for motor protection size S10/S12, CLASS 10E contactor mount/standalone installation. Main circuit: rail connection. Auxiliary circuit: screw connection. Manual-automatic RESET. Electronic overload relay SIRIUS 3RB2 for current-dependent protection of consumers with normal and heavy starting against unacceptable overheating due to overload, phase asymmetry, or phase failure. With large current setting ranges and different tripping characteristics, only a few types cover entire series of motors. With their low power loss, they are particularly energy-efficient and contribute to reduced heating in the control cabinet. Worldwide approvals (e.g., IEC and UL/CSA) and applications in explosion-prone environments (ATEX) are standard. Available with various setting ranges for the overload relay and different tripping classes. They come with screw or spring connection for quick, maintenance-free, and vibration-resistant connections, as well as for standalone installation. The accessories are compatible across all sizes from S6 to S12. Simple, efficient, always up to date - the SIRIUS system modular design.