S&C Power Fuses - Types SM-4, SM-5, SMD-20, and SMD-40 - Outdoor Distribution (4.16 kV through 34.5 kV)
S&C Power Fuses -- Type SMD-20 With SMU-20 Fuse Units Outdoor Distribution - Recommended Mounting Clearances 14.4 kv through 34.5 kv