● The product is used in overload or short-circuit protection for electric transformer. The current limiting means that the fuse will cut off the circuit before the short-circuit current reaches the peak value.

Features

Current which passes the fuse when being1.3 times of itsspecified electric current. Do not fusing for an hour;Whenthe current through the fuse is 2 times of its specinedelectric current. fusing in an hour;Refer to its fusingfeature curve in chart 1when select the fuse.

Figure 1 RN1/RN3“An-second” characteristic curve

Technical data

Structure of fuse link

The fuse pipe is the main part of fuse,it is made by installing the fuse wire in the porcelain pipe,filing the quartzsand in the porcelain pipe and sealing to-ends of pipe.For the fuse pipe with rated current below 7.5Aand 35V ratedvoltage,its fuse wire is rolled on the
special porcelain core,referening to chart 2.a.for the fuse pipe with rated currentabove 7.5A,its fuse wire is hang in the porcelain pipe,referening to the chart.

Overall and mounting dimensions(mm)

Chart 2-the section of style fuse pipe

Chart 3-the section of style fuse pipe

1. Cover
2. Cap
3. Porce lain pipe
4. Fuse wire
5.Quartz sand
6. lndicator fuse wire
7. Spring
8. lndicator
9. Porcelain core
10. Rubber washer

Technical data