MEGA® 298 Bolt-Down Fuse Holders Littelfuse MEGA® 298 Bolt-Down Fuse Holders are designed to work with MEGA bolt-down fuses and come in various configurations with a 500A maximum current rating and 70VDC maximum voltage rating. The high-current holders include a base style option with M6 mounting holes and another with extended M6 mounting slots that are 15mm long. The cover has six available locations for openings. The flex variant features a UL 94V-0-rated flexible cover that also allows cable entry at six locations, and it accommodates large wire sizes and ring terminal stack up. The flex base includes an M6 mounting hole and an M6 slot that is 6mm long. Littelfuse MEGA 298 Bolt-Down Fuse Holders are suitable for multi-fuse applications and have interlocking pins or dovetails on the sides, enabling the connection of additional MEGA fuse holders. Both the high-current and flex variants are ideal for battery and alternator connections and provide ultra-high-current protection for other heavy gauge cables.