Accessories for 3KC4, 3KC8 phase separators for 3-pole 3KC for 250-400A contains 2 pieces. Comprehensive accessories for increased flexibility. From connecting bridges and auxiliary switches to various drives, fourth poles or contact covers: With a wide range of accessories, the load disconnectors and transfer switches can be used for different requirements and upgraded at any time. www.siemens.de/schaltgeraete. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and sockets for safe, efficient electrical infrastructure in buildings and industry.