General Electric FVK421R Flex-A Plug Bus Plug is a 30A, 240V, 4P 3PH fusible device designed for GE Flex-A Plug bus systems. This Style 2 fusible configuration provides a ready-to-install fusible connection for a 3‑phase, 240V distribution circuit within compatible Flex-A Plug installations. The FVK421R is the specific 4P 3PH variant used where a GE Flex-A Plug interface and fusible protection are required.
