3RV2042-4JB10 siemens

Description

The Siemens 3RV2042-4JB10 is a SIRIUS series motor protection circuit breaker designed for reliable protection of motors and industrial equipment. It belongs to the S3 size category and supports an adjustable overload range of 45…63 A, with a thermal overload release (Class 20) and a magnetic short-circuit trip at 819 A. Engineered for high performance, it offers an impressive 100 kA short-circuit breaking capacity at 400 V, making it suitable for demanding industrial environments.

This breaker supports AC motor applications up to 30 kW at 400 V and provides dependable protection against overload, phase failure, and short circuits. It features screw-type terminals, a robust mechanical lifespan of 25,000 operations, and a compact design for easy installation on DIN rail or screw mounting. Operating temperatures range from -20°C to +60°C, ensuring maximum durability in harsh conditions. Ideal for use across automation, machinery, and control panel systems, it integrates seamlessly with Siemens contactors and accessories.