Siemens Circuit breaker 3RV2121-4EA10 1 pc.

Circuit breaker size S0 for motor protection, Class 10 with overload relay function A-trip 27...32 A N-trip 400 A screw connection. Standard switching capacity circuit breaker SIRIUS 3RV2 for motor protection with overload relay function for safe disconnection in case of short circuits and protection of consumers and systems against overload, as well as for safe isolation of the system from the grid. 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. Global 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), system 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 terminal connections for quick, maintenance-free, and vibration-resistant connections, and optionally with an integrated auxiliary switch. The comprehensive accessories, such as auxiliary switches, auxiliary trip devices, signaling switches, etc., are standardized 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.