zcase single mega/starter description the single zcase is a minimal footprint bolt down fuse with a wide rating range up to 600a in the same packaging size. the time current characteristic is similar to the well known mega design and can used as full wire protection until 250a. higher ratings mostly used for typically starter fuse application as a protector fuse. the fuse design is optimized for a one bolt connection m6 (125 a - 250 a) or m8 (300 a - 600 a) and can used directly on a battery post or busbar connection. littelfuse is offering a complete solution for the necessary stud and different busbar connections including some battery clamps. specifications cover/base material: ppa (33% gf) insulating tube: out of ceramic terminal: tin plated copper voltage rating: 32v dc interrupting rating: 2000a @ 32v vdc operating temperature: -40 to 125c mounting torque m6: 9.8nm1.4nm mounting torque m8: 14nm2nm ordering information part number package size 3298xxx.zxsta 480 3298xxx.z 480 ratings part number current rating wire size max. voltage drop average cold resistance i2t 3298125.z 125 a 16 mm2 110 mv 0.39 mohm 45000 a2s 3298150.z 150 a 25 mm2 110 mv 0.32 mohm 75000 a2s 3298175.z 175 a 25 mm2 110 mv 0.26 mohm 140000 a2s 3298200.z 200 a 35 mm2 110 mv 0.231 mohm 235000 a2s 3298225.z 225 a 35 mm2 110 mv 0.175 mohm 95000 a2s 3298250.z 250 a 50 mm2 110 mv 0.167 mohm 160000 a2s 3298300.zxsta 300 a 35 mm2 70 mv 0.128 mohm 310000 a2s 3298350.zxsta 350 a 35 mm2 70 mv 0.103 mohm 570000 a2s 3298400.zxsta 400 a 50 mm2 70 mv 0.084 mohm 870000 a2s 3298500.zxsta 500 a 50 mm2 70 mv 0.065 mohm 1550000 a2s 3298600.zxsta 600 a 50 mm2 70 mv 0.049 mohm 3000000 a2s 3298900.z shunt 50 mm2 - - - high current fuses time-current characteristics % of rating opening time min / max (s) 125a - 250a 300a - 600a 50 C / C 14,400 / C 100 14,400 / C C / C 135 120 / 1800 C / C 200 1 / 15 1 / 40 350 0.300 / 5 0.300 / 5 500 C / C 0.100 / 1 (only for 500a) 600 0.100 / 1 0.100 / 1 (except 600a) www.littelfuse.com
zcase single mega/starter dimensions dimensions in mm time-current characteristic curves all zcase starters t/c curves were performed on the left or right side of the metal bar as shown in pictures above. a 50mm2 cu wire was mounted at the mid hole (m8) of the metal bar as current feed. examples of single zcase applications high current fuses please contact your littelfuse representative for application support and information on mating hardware. www.littelfuse.com
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