... transformer protection is mainly used in AC 50HZ, rated voltage 3.6-40.5KV, rated current up to 6.3A ... is made from heat tesistance, high duty ceramic or epoxy glass. When fault circuit happens, the fuse link melts causing arc ... current (kA)Length (mm)Diameter (mm)XRNP1 3.60.5, 1, 2, 3.15, 6.3 50 14222 / 25XRNP1 7.20.5, 1 ... / 19522 / 25 XRNP1 10 (12)0.5, 1, 2, 3.15 50 192 / 195 22 / 25 XRNP1 240.5, 1 ...