0298300.UX1M8

High Current Fuses MEGA® and MEGA® Clear Top Fuse Rated 32V The MEGA® Fuse is designed for high current circuit protection up to 500A 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. Specifications MEGA ® Fuses MEGA ® Clear Top Housing Fuse Time-Current Characteristic Curves 10000 1000 100 TIME [s] Ordering Information Time-Current Characteristics Package Bolt Bolt Hole Plating Size Size Qty Opening Time Min / Max (s) Rating 40-250 300-500 0298xxx.ZXEH 80 - 250 500 None M8 2 75 –/– 14,400 / ∞ 0298xxx.ZXH 300 - 500 500 None M8 2 100 14,400 / ∞ –/– 0298xxx.UX1M8 80 - 500 500 None M8 1 135 120 / 1800 –/– 0298xxx.ZXB 40 - 250 500 Ag M8 2 200 1 / 15 1 / 15 0298xxx.ZXA 80 - 500 500 None M6 2 350 0.3 / 5 0.5 / 5 600 0.1 / 1 0.1 / 1 MEGA Clear Top Housing Material Fuse 0298xxx.UXT 10 % of Rating Part Number 60A 80A 100A 125A 150A 175A 200A 225A 250A 300A TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23°C) Voltage Rating: 32 VDC Interrupting Rating: 2000A @ 32 VDC Recommended Environmental Temperature: -40˚C to + 125˚C Terminals Materials: Copper (Silver plated copper available) Housing Material: PPA-GF33HS (U.L. 94 Flammability rating - HB) Clear Top Housing Material: PES (top) (U.L. 94 Flammability rating - V0) PPA-GF33HS (bottom) (U.L. 94 Flammability rating - HB) Mounting Torque M6: 8-14 Nm Mounting Torque M8: 12-18 Nm Complies with: ISO 8820-5 40 - 250 500 None M8 2 Ratings 1 0.1 0.01 10 100 1000 10000 10000 400A 450A 500A 350A CURRENT [A] 1000 TIME [s] 100 10 1 0.1 100 1000 CURRENT [A] REV07272021 10000 Part Number Current Rating (A) Color Code 3 Test Cable Size Typ. Voltage (mm2) Drop (mV) 0298040._1 40 – 1 0298060._ 60 – 0298080._ 80 0298100._ 100 0298125._ 125 0298150._ Typ. Cold Resistance (mΩ) Typ. I2t (A2s) 4 132 2.51 8,700 6 119 1.50 21,000 10 87 0.72 21,500 16 87 0.56 31,100 16 80 0.42 57,800 150 25 92 0.35 100,000 0298175._ 175 25 86 0.29 168,000 0298200._ 200 35 83 0.26 204,000 0298225._ 225 35 82 0.22 257,000 0298250._ 250 50 82 0.20 389,000 0298300._2 300 70 74 4 0.17 315,000 0298350._2 350 70 68 4 0.14 500,000 2 0298400._ 400 70 64 4 0.13 610,000 0298450._2 450 70 60 4 0.11 1,050,000 0298500._2 500 70 58 4 0.09 2,050,000 1: Not mentioned in ISO standards 2: Short Circuit Protector only 3: 0298xxx.ZXB has white font color on all ratings. 4: Voltage Drop measurements for short circuit protectors taken at 75% of rated current. The typical I2t is an average value calculated from the breaking capacity tests by using the melting time before the arcing occurs. ® Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse ® product documentation. Warranties granted by Littelfuse ® shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse ® documentation. Littelfuse ® shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse ® as set forth in applicable Littelfuse ® documentation. The sale and use of Littelfuse ® products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse ®. 33 littelfuse.com High Current Fuses MEGA® Fuse Rated 32V Dimensions Dimensions in mm for reference only. See outline drawing for dimensions and tolerances. ZX & UXT Versions UX1M8 Version 68.6 50.8 29.2 (25.4) XXXAMP 19.0 16.3 M6: Ø6.6 M8: Ø8.6 XXXA 9.9 (40A-250A) 10.7 (300A-500A) 1.02 (40A-250A) 1.8 (300A-500A) Typical Derating Temperature Table Temperature Security Margin is 20% Please contact Littelfuse® for Details Regarding Derating Test Set-Up. max. allowed current load [A] at ambient temperature 40A 60A 80A 100A 125A 150A 175A 200A 225A 250A 300A 350A 400A 450A 500A Max Recommended Environmental Temperature Derating curves may change depending on the final condition of the application (terminals characteristics, wire size etc..). Please ask Littelfuse for more information. -20°C 0°C 20°C 65°C 85°C 95°C 105°C 125°C 35 48 81 101 129 149 164 184 194 230 272 311 317 337 378 33 46 76 95 123 141 156 175 184 218 258 294 300 320 358 31 43 72 90 116 133 147 165 174 205 242 277 283 302 337 26 36 61 76 98 112 124 139 147 173 204 232 239 256 284 23 32 55 69 88 102 112 126 134 157 184 209 216 232 257 22 30 52 65 83 96 106 119 127 147 174 197 204 219 242 20 28 49 61 78 90 99 112 119 138 162 184 191 206 227 17 23 41 51 66 76 84 94 101 116 136 154 161 175 191 REV07272021 Littelfuse ® products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse ® product documentation. Warranties granted by Littelfuse ® shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse ® documentation. Littelfuse ® shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse ® as set forth in applicable Littelfuse ® documentation. The sale and use of Littelfuse ® products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse ®. 34 littelfuse.com