Circuit breaker size S2 for motor protection, Class 10 A release 35...45 A N release 650 A screw connection. Standard switching capacity circuit breakers SIRIUS 3RV2 for motor protection to ensure safe disconnection in case of short circuits and to protect consumers and installations from overload, as well as for safely isolating the installation from the grid. The compact and climate-resistant circuit breakers are optimized for use in consumer branches due to their low heat dissipation, naturally also suitable for IE3/IE4 motors and equally for switching direct current. Worldwide approvals (e.g., IEC and UL/CSA) and applications in explosion-prone environments (ATEX or IEC Ex) are a given. Device variants are available for motor protection (also with overload relay function), plant protection, short circuit protection of starter combinations, transformer protection, as main and emergency stop switches, and for use in IT networks. They come with screw or spring terminals for a quick, maintenance-free, and vibration-resistant connection, and optionally with an integrated auxiliary switch. The comprehensive accessories, such as auxiliary switches, auxiliary releases, signaling switches, etc., are uniform for all sizes. The use of various power supply options, such as the associated power supply system SIRIUS 3RV29, significantly reduces the main circuit wiring. The circuit breakers 3RV2 replace the proven series 3RV1. Simple, efficient, always up to date - the SIRIUS system modular concept.