Circuit breaker size S2 for starter combinations, rated current 80 A, N-trigger 1040 A, screw connection. Standard switching capacity of SIRIUS 3RV2 circuit breakers for starter combinations ensures safe protection of consumers in case of short circuits as well as safe disconnection from the power supply. The compact and climate-resistant circuit breakers are optimized for use in consumer branches due to their low heat dissipation, and they are naturally suitable for IE3/IE4 motors and for switching direct current as well. Worldwide approvals (e.g., IEC and UL/CSA) and applications in explosion-prone environments (ATEX or IEC Ex) are standard. Variants are available for motor protection (also with overload relay function), plant protection, short circuit protection for starter combinations, transformer protection, as main and emergency stop switches, and for use in IT networks. They come with screw or spring-loaded connections for a quick, maintenance-free, and vibration-resistant connection, and optionally with a built-in auxiliary switch. The comprehensive accessories, such as auxiliary switches, auxiliary triggers, signaling switches, etc., are uniform for all sizes. The use of various energy supply options, such as the associated SIRIUS 3RV29 supply system, significantly reduces the main circuit wiring. The 3RV2 circuit breakers replace the proven 3RV1 series. Simple, efficient, always up to date - the SIRIUS system modular concept.