Siemens 3RV2021-1AA20

Circuit breaker size S0 for motor protection, CLASS 10 A release 1.1...1.6 A N release 21 A spring terminal connection. Standard switching capacity of SIRIUS 3RV2 circuit breakers for motor protection to ensure safe disconnection in case of short circuits and to protect consumers and installations from overload, as well as to safely isolate the installation from the power supply. The compact and climate-resistant circuit breakers are optimized for use in consumer branches due to their low heat dissipation, naturally suitable for IE3/IE4 motors and equally for switching direct current. Worldwide approvals (e.g., IEC and UL/CSA) and applications in explosion-hazardous 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 terminal connections for quick, maintenance-free, and vibration-resistant connections, and optionally with built-in auxiliary contacts. The comprehensive accessories, such as auxiliary contacts, auxiliary releases, signaling switches, etc., are uniform across all sizes. The use of various power 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 design.