SMD® Power Fuses, Outdoor Distribution
Construction Detail — SMU Fuse Unit
- Upper seal
- Latch-actuating pin
- Stainless-steel drive spring — provides stored energy to drive arcing rod upward through arc-extinguiching medium during fuse operation
- Solid material arc-extinguishing medium
- Silver-clad copper arcing rod
- Filament-wound glass-epoxy tube
- Fusible element — helically-coiled silver or pretensioned nickel-chrome — provide precise melting characteristics and nondamageable performance