NEMA C37.47-1981 Specifications for Distribution Fuse Disconnecting Switches@ Fuse Support@ and Current Limiting Fuses (Includes Supplement ANSI C37.47a-1981)
2000NEMA C37.47-2000 High Voltage Current-Limiting Type Distribution Class Fuses and Fuse Disconnecting Switches This is Now Copyrighted by IEEE
1981NEMA C37.47-1981 Specifications for Distribution Fuse Disconnecting Switches@ Fuse Support@ and Current Limiting Fuses (Includes Supplement ANSI C37.47a-1981)