The MEGA® Fuse is designed for high current circuit protection up to 250 amperes with “Diffusion Pill Technology”, the Mega Fuse also provides time delay characteristics. Designed and patented by Littelfuse, the MEGA Fuse is ideal for battery and alternator protection application and other heavy gauge cables requiring ultra-high current protection. 80A 100A 125A 150A 175A 200A 225A 250A MEGA® Fuse 1000 TIME IN SECONDS 100 10 1 .1 .01 10 100 1000 10000 100000 CURRENT IN AMPERES 1.0 Ø 8.6 R 11.9 298 32V LITTELFUSE ® MEGA 19.1 100A PAT .5293147 29.2 50.8 9.9 68.6 TIME-CURRENT CHARACTERISTICS Opening Time % of Maximum Minimum Rating — 4 hrs. 110 1800 s 120 s 135 15 s 1s 200 5s 0.3 s 350 1s 0.1 s 600 Interrupting Rating: 2000A @ 32 VDC Voltage Rating: 32 VDC Ambient Temp.: –40°C to +125°C MEGA® FUSE TABLE 14 Current Rating (A) 80 100 125 150 175 200 225 250 Nom. Cold Resistance (mΩ) 0.72 0.55 0.43 0.35 0.27 0.26 0.23 0.19 MEGA Fuse Temperature Rerating Curve 120 Rerating Factor (% Rated Current) Part Number 298080 298100 298125 298150 298175 298200 298225 298250 Typ. Voltage Drop at Rated Current (mV) 87 87 80 92 86 83 82 82 115 110 105 100 95 90 85 80 75 70 -40 -20 0 20 40 60 80 100 Ambient Temperature (°C) 120 140