Circuit breaker size S00 for fuse monitoring screw connection A-release 0.2 A N-release 1.2 A SIRIUS 3RV1 circuit breaker for fuse monitoring for reliable reporting of blown fuses.The compact and climate-resistant circuit breakers are optimized for use in load feeders due to their low waste heat, and of course also for IE3/IE4 motors. Worldwide approvals (e.g. IEC and UL/CSA) and applications in potentially explosive applications (ATEX or IEC Ex) are a matter of course.Side and transverse auxiliary switches are available as accessories.Simple, efficient, always up to date - the SIRIUS modular system.