LV HRC disconnecting blade Sz. 00 Insulated grip lug UL fuse systems class CC and class J. As an important component of the SENTRON protective components for electronic installations, the 3NW fuse system from Siemens provides effective protection for personnel, equipment and plants with reliable shutdown in the event of an overload or short-circuit. Class CC fuses are used for branch circuit protection applications. Class J fuse links are used for branch circuit protection and in the feeder circuit. Key features of the Siemens NW fuses: 1. Easier export thanks to UL and CSA approvals for typical applications on the North American market. 2. Modern design with touch protection ensures safe installation. 3. Dead-state fuse replacement in fuse holders possible Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution boards as well as switches and sockets for safe and efficient electrical infrastructure in buildings and industry.