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 Interrupting Rating: 2000A @ 32 VDC Voltage Rating: 32 VDC Operating Temperature Range: -40˚C to + 125˚C Housing Material: PPA-GF33HS Clear Top Housing Material: PES (top) PPA-GF33HS (bottom) Terminals:Copper (Silver plated copper available) M6 or M8 bolts available Mounting Torque: 8-14 Nm M6 12-18 Nm M8 Complies with: ISO 8820-5 Time-Current Characteristics Ordering Information Part Number MEGA Clear Top Housing Fuse ® Package Bolt Plating Size Size Rating 0298xxx.ZXH 500 none M8 300 - 500 0298xxx.ZXEH 500 none M8 80 - 250 0298xxx.ZXB 500 Ag M8 40 - 250 0298xxx.ZXA 500 none M6 80 - 500 M8 40 - 250 % of Rating 0298xxx.UXT 500 none 40-250 300-500 –/– 14,400 s / – 100 14,400 s / – –/– 135 120 s / 1800 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 75 MEGA Clear Top Housing Material Fuse Opening Time Min / Max (s) Ratings Part Number Current Rating (A) Font Color* Typ. Voltage Drop (mV) Cold Resistance (mΩ) I2t (A2s) 0298040._1 40 – 132 2.510 8700 1 0298060._ 60 – 119 1.504 21000 0298080._ 80 87 0.720 21500 0298100._ 100 87 0.562 31100 0298125._ 125 80 0.423 57800 0298150._ 150 92 0.352 100000 0298175._ 175 86 0.294 168000 0298200._ 200 83 0.257 204000 0298225._ 225 82 0.222 257000 0298250._ 250 82 0.201 389000 2 0298300._ 300 74 ** 0.167 315000 0298350._2 350 68 ** 0.138 500000 2 0298400._ 400 64 ** 0.126 610000 0298450._2 450 60 ** 0.112 1050000 0298500._2 500 58 ** 0.092 2050000 Note 1: Not mentioned in ISO standards Note 2: Short Circuit Protector only * 0298xxx.ZXB has white font color on all ratings. ** Voltage Drop measurements for short circuit protectors taken at 75% of rated current. 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. littelfuse.com High Current Fuses MEGA® Fuse Rated 32V Time-Current Characteristic Curves Dimensions Dimensions in mm M6: 6.60 (.26") M8: 8.64 (.34") 29.2 (1.15") 9.9 (.39") 40-250A 10.72 (.422") 300-500A 40-250A 1.83 (.072 ) 300-500A Temperature Rerating Curve 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. littelfuse.com