Spring-and-cable assembly — stainless-steel spring provides high-speed elongation of arc within refill unit when fuse operates
SM Refill Unit — replaced after fault-clearing operation
Large, easily accessible pull-ring pivots to pry up latch on disconnect style mountings. On non-disconnect style mountings, lifting eye is used for installing and removing holder
Brass upper (and lower) ferrules
Fluorescent fire-orange target moves into “blown-fuse” indicator window when fuse operates
Translucent glass-epoxy fuse tube
Silencer (SM-4Z Power Fuses) virtually eliminates venting. Fuse operation is silent. Snuffler (SM-5S Power Fuses) or Super Snuffler (SM-5SS Power Fuses) effectively controls venting