terminal cover plug-in and draw-out technology accessory for: circuit breaker, 3-pole 3VA1 160 Connection technology for 3VA molded-case circuit breakers The connection technology of the 3VA molded case circuit breakers is designed to support uncomplicated and convenient commissioning of the 3VA molded case circuit breakers and to meet all installation requirements. &DPMD_ACC602_001_000_1003289& 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.