High Current Fuses BF2 Fuses Rated 58V This BF2 fuse is rated at 58V and offers a bolt-on fuse for high current wiring protection. Current rating 100A - 300A; with transparent housing material for easy detection of blown fuses. Specifications Housing Material: Clear Housing Material: Terminal: Mounting Torque: Breaking Capacity: Complies with: PET-GF30 PES Copper alloy, gal. Sn 2 x M8 bolts, Distance 51 mm 12.0 Nm +/- 1Nm 1000A, 58V DC ISO 8820-5, UL 248 Special Purpose Fuses BF2 Fuses Time Current Characteristics Ordering Information Package Size 142.5395.xxxx 200 Ratings 100A 125A 150A 175A 200A 225A 250A 300A 400A 500A Time-Current Characteristic Curves TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23°C) 1000 100 TIME [s] Part Number 10 Part Number Current Rating (A) 142.5395.6102 142.5395.6122 % of Rating Opening Time Min / Max (s) 100A - 250A 300A 75 –/– –/– 100 4h/– 4h/– 135 120 s / 1,800 s –/– 200 1 s / 15 s 1 s / 15 s 350 0.300 s / 5 s 0.500 s / 5 s 600 0.100 s / 1 s 0.100 s / 1 s Typ. Voltage Drop (mV) Cold Resistance (mΩ) 100 110 0.70 46,800 125 110 0.52 118,100 142.5395.6152 150 110 0.42 113,400 142.5395.6172 175 110 0.36 154,400 142.5395.6202 200 110 0.34 288,000 142.5395.6222 225 110 0.29 236,000 142.5395.6252 250 110 0.25 292,500 142.5395.6302¹ 300 110 0.21 486,000 Housing Color I2t (A2s) Dimensions Dimensions in mm 1 0,1 10 100 1000 10000 CURRENT [A] 100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23°C) 400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23°C) Littelfuse products are designed for specific applications and should not be used for any purpose (including, without limitation, automotive applications) not 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 product 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 product documentation. 31 littelfuse.com