1 ? 2009 littelfuse, inc. specifcations are subject to change without notice. cartridge fuses 3ab 1000vac / dc high voltage fuse 508 series please refer to www.littelfuse.com/series/508.html for current information. 508 series agency agency file number ampere range recognised file: e10480 315ma - 500ma 315ma - 500ma 508 series lead-free 3ab fuse a 1000vac/vdc rated ceramic fuse with remarkable interrupting rating in a compact 6.3 x 32mm package, which is well suited for circuit protection in high energy applications. ? in accordance with underwriters laboratories standard ul 248-14 ? available in cartridge ? pluggable into clips or shock safe holders ? rohs compliant and lead-free ? superior interrupting rating of 10,000 amperes ? compact form factor of 6.3 x 32mm agency approvals features electrical characteristics applications % of ampere rating ampere rating opening time 100% 315ma - 500ma 4 hours, minimum 135% 1 hour, maximum 200% 120 seconds, maximum amp code amp rating voltage rating interrupting rating nominal cold resistance (mohms) nominal melting i 2 t (a 2 sec.) agency approvals .315 0.315 1000 10ka @ 1000vac 10ka @ 1000vdc 9200 0.071 x x .500 0.5 1000 3572 0.259 x x electrical characteristic used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. description * 10ka@600vac/dc also curus approved. add suffx 6. example: 0508.315mx6p. revised: december 23, 2010
introduction to circuit protection introduction to circuit protection transientology 2 ? 2009 littelfuse, inc. specifcations are subject to change without notice. cartridge fuses 3ab 1000vac/dc high voltage fuse 508 series please refer to www.littelfuse.com/series/508.html for current information. product characteristics dimensions materials body : ceramic cap : nickelCplated brass terminal strength mil-std-202g, method 211a, test condition a solderability na product marking cap1 : brand logo, current and voltage ratings cap2 : series and agency approval marks operating temperature: C55oc to 125oc. thermal shock: mil-std-202g, method 107g, test condition b (5 cycles -65oc to +125oc). vibration mil-std-202g, method 201a humidity mil-std-202g, method 103b, test condition a: high relative humidity (95%) and elevated temp (40oc) for 240 hours salt spray mil-std-202g, method 101e, test condition b packaging option packaging specifcation quantity quantity & packaging code reel size 508 series bulk n/a 1000 mx n/a packaging ? 6.3 32 part numbering system 0508 mx p xxxx lead-free packaging code quantity code current rating code series x = filler m = 1000 refer to amp code column of electrical characteristics table average time current curves temperature rerating curve 0 . 001 0 .0 1 0 .1 1 10 100 1000 10000 0 . 01 0 . 1 1 508.315 508.500 10 100 ti me (seconds) amps
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