Circuit breaker size S00 for transformer protection A-release 0.35...0.5 A N-release 10 A spring terminal connection. Standard switching capacity of SIRIUS 3RV2 circuit breakers for transformer protection to ensure safe protection of transformers against short circuits and overloads. 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, such as IEC and UL/CSA, as well as applications in explosion hazard areas (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 are available with screw or spring terminal connections for a quick, maintenance-free, and vibration-resistant connection, optionally with an integrated auxiliary switch.

The comprehensive accessories, such as auxiliary switches, auxiliary releases, and signaling switches, are uniform across 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 3RV2 circuit breakers replace the proven series 3RV1. Simple, efficient, always up-to-date - the SIRIUS system modular design.