3VA-line connecting cable 1.0m accessory for: COM800, COM060 Communication for 3VA molded-case circuit breakers. The 3VA molded case circuit breaker uses an innovative, modern communication concept. This concept is based on the COM100 or COM800 breaker data server, which can link up to eight molded case circuit breakers to different bus systems. This allows plants to transfer relevant data such as energy and diagnostic information to a higher-level automation system for processing. www.siemens.de/3VA. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and sockets for safe and efficient electrical infrastructure in buildings and industry.