1SVR040003R0600 is an ABB SACE S3N Modular Circuit Breaker, a two-pole, three-phase device with a rating of 18A and a differential protection treshold of 6A. The SACE S3N is designed for low-voltage distribution systems, and offers numerous options for short-circuit and overload protection. The device is formed by a main circuit breaker module and auxiliary modules, and includes a thermal-magnetic trip unit and adjustable automatic reset that can be external, front-mounted, or combined with overvoltage protection. The SACE S3N meets IEC 60947-2 standards, and is suitable for general purpose application.