High Current Fuses BF2 Fuses Rated 32V This BF2 fuse is rated at 32V and offers a bolt-on fuse for high current wiring protection. Current rating 100A - 500A with transparent housing material for easy detection of blown fuses. Specifications Voltage Rating: 32 VDC Interrupting Ratings: 100A - 300A: 2000A 32 VDC 400A - 500A: 1500A 32 VDC Recommended Environmental Temperature: -40C to + 125C Terminals Material: Tin plated copper alloy Housing Material: PET-GF33 (U.L. 94 Flammability rating V0) Clear Housing Material: PES (U.L. 94 Flammability rating V0) Mounting Torque M8: 12.0 Nm +/- 1Nm Mounting Torque M6: 6.0 Nm +/- 1Nm BF2 Fuses Refers to: ISO 8820-5:2015, UL 248 Special Purpose Time Current Characteristics Ordering Information Opening Time Min / Max (s) Package % of Rating Part Number Rating Size 100A - 250A 300A - 500A 75 / 14,400 / Standard M8 Holes 153.5395.xxxx 100 - 500 200 100 14,400 / / M6 Holes 135 120 / 1,800 / 153.7011.xxxx 100 - 500 200 200 1 / 15 1 / 15 Time-Current Characteristic Curves 350 0.3 / 5 0.5 / 5 TIME-CURRENT CHARACTERISTIC CURVES (RECORDED 23C) 600 0.1 / 1 0.1 / 1 1000 Ratings Current Typ. Cold 2 100 Housing Test Cable Typ. Voltage Typ. I t Part Number Rating Resistance 2 2 Color Size (mm ) Drop (mV) (A s) (A) (m) 153.xxxx.6102 100 16 102 0.70 46,800 153.xxxx.6122 125 25 81 0.52 118,100 10 153.xxxx.6152 150 25 77 0.42 113,400 153.xxxx.6172 175 25 104 0.36 154,400 153.xxxx.6202 200 35 102 0.34 288,000 153.xxxx.6222 225 35 107 0.29 236,000 1 153.xxxx.6252 250 50 86 0.25 292,500 1 153.xxxx.6302 300 70 68 0.21 486,000 1 153.xxxx.6402 400 70 70 0.13 964,000 1 153.xxxx.6502 500 70 60 0.12 1,449,000 0,1 10 100 1000 10000 Note 1: Short Circuit Protector only CURRENT A 2 The typical I t is an average value calculated from the breaking capacity tests by using the melting time before the arcing occurs. 100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23C) 400A-500A: F =2,00 (max. operating current: 0,5 x I at 23C) L rat 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 . littelfuse.com 45 TIME s 100A 125A 150A 175A 200A 225A 250A 300A 400A 500AHigh Current Fuses BF2 Fuse Rated 32V Dimensions Dimensions in mm for reference only. See outline drawing for dimensions and tolerances 67.3 51 29 16.3 M8: 8.5 M6: 6.5 0.5 (100-125A) 9.3 (100-200A) 0.8 (150-200A) 9.4 (225-300A) 1.0 (225-300A) 10 (400- 500A) 1.5 (400-500A) Temperature Table Typical Derating of Fuse Melting Element max. allowed current load A at ambient temperature (typical derating) Temperature Security Margin is 20% Please contact Littelfuse for Details Regarding Derating Test Set-Up. -40C 0C 20C 65C 85C 110C 125C WITH CURRENT TAB NAMES 100 96 91 76 69 58 50 100A 300 290 100A 280 125 115 108 90 80 67 58 125A 270 125A 260 250 150A 150A 150 138 130 109 99 83 73 240 Max Recommended 175A 230 Environmental 220 200A 210 175A 167 151 142 120 108 92 80 Temperature 200 225A 190 180 189 171 161 135 122 103 90 250A 200A 170 160 150 200 180 170 143 129 109 94 140 225A 130 120 250 250 244 200 177 145 123 110 250A 100 90 80 225 225 225 201 181 153 133 300A 70 60 50 300 300 300 262 236 198 172 400A 40 30 20 10 364 329 311 263 238 202 177 500A 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Ambient Temperature C 400 Derating curves may change depending on the final condition of the application 300A 380 (terminals characteristics, wire size etc..). 360 400A Please ask Littelfuse for more information. 340 500A 320 Max Recommended 300 Environmental 280 Temperature 260 240 220 200 180 160 140 120 100 80 60 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 Ambient Temperature C 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 . littelfuse.com 46 Max. Allowed Current Load A Max. Allowed Current Load A