1. ApplicationThis series fuse is suitable for AC 50Hz, rated
voltage to 600V, rated current to 125A. It is mainly used for
protecting the electrical circuit against overload and
short-circuits(gG/gL). Because of different melting tablets, it
also may derive for rotecting the semiconductor device and others
complete set installment from short-circuit (aR/gR/gs/gtr) as well
as the electric motor from short-circuit (aM). The rated breaking
capacity is to 100KA. They conform to national standard GB13539 and
international electrical committee standard
IEC60269. 2.Construction Feature This series of fuse
consists of fuse link and fuse base. The variable cross-section
fuse body made by pure copper piece (or copper wire, silver wire,
silver piece) is sealed in the fusion tube which is made by the
high strength porcelain or epoxy glass cloth pipe, there is full of
the high-purity quartz sand processed after chemistry to take the
extinguishing of arc medium in the tube. The two sides of the fuse
use the spot welding to reliably connect with the end plate and to
form the cylindrical cap shape structure. Fuse base suppressed by
the resin or plastic casing fitted with contacts and contains the
fusion pieces, the connection made by riveting as the support of
the appropriate size fuse body parts. This series of fuse has many
merits such as small in size, convenient for installation, safe in
usage, beautiful in appearance and so on. 3. Principle
Technical ParameterFuse modelRated voltageRated
current Overall dimension/size(mm)CommonFast(V)(A)drawing
NO.D×L(gG)(aR) NK52NKS522500.5~201.15×20 /*
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