... 500V (2,Working frequency50Hz AC (3,Conventional free air thermal current up to 125A,fuse holder These fuse ... switch by multi-phase combination.There are two in/out lines at the RT18N fuse base,providing ... up to 500V;Working frequency 50Hz AC;Conventional free air thermal current up to 125A;Compliant with GB13539. ... IEC60269-2,IEC60269-2-1,IEC947-3in-line fuse holder,anl fuse holder,fuse holder