A stylish and effective appliance by Orpat, the fuse is made of PC, a material used to resist fire. Other features include spring load, better??contact, and energy transfer. The shutter retainer boasts of PC material ensuring longevity. Made from Phosphor??bronze, it is high in conductivity and maintains a fine balance of voltage. The screws are nickel-plated to provide extra protection from??rust. All sockets manufactured by Orpat are ISI marked. This type of fuse comes in a pack ranging from 20 pieces.