All-purpose silver-linked fuse for both overload and shortcircuit
protection for high capacity systems (mains and large feeders).
Time-delay (minimum of four seconds at five times amp rating) for close
sizing.
Current-limiting action of the fuse generally affords considerable
reduction in bus bracing.
Interrupting rating of 300,000 amperes complies with NEC Sections 110-9
and 230-65 for today’s large capacity systems.
O-ring seals maximize pressure build-up during currentlimiting action and
ensure filler retention.
High grade silica-sand filler; accelerates response of fuse to
short-circuits by having quenching effect upon the fuse arc.
99.9% pure silver fuselinks. The high conductivity of silver gives low
watt loss and low operating temperature at normal current levels; maximizes
total clearing I2t fault energy let-through.
Selective coordination (blackout prevention).
Glass melamine tube.
Silver-plated end bells.
Time-Delay – 4 seconds (minimum) at 500% rated current
Current-Limiting
Interrupting Rating: 300,000A RMS Sym. (UL)
Interrupting Rating: 100,000A DC (UL)
UL Listed – Special PurposeŁ, Guide JFHR, File E56412
CSA Certified – (200,000 AIR), Class 1422-02, File 53787 Class L per CSA
C22.2, No. 248.10