RT18-63 Series fuse holders are supporters for fuses with size up 10*38mm,They are capable of working under heat caused by rated current and expected short impacting current up to 100KA.It can also function as a fuse dicconnecting switch by multi-phase combination.Rated insulate voltage up to 690V;Working frequency 50HZ AC; Conventional free air thermal current up to 32A;Compliant with GB13539.1,andIEc269,IEC6311,NFC63210,IEC947-3