MRBF Fuse 2pcs (Fuse Block NOT Included) Designed for use with M8 stud fuse boxes and suitable for single or dual terminal fuse blocks. Key specifications Max voltage rating: 58V Amperage rating: 100A Fuse holder stud size: M8 (5/16 inch) Fuse holder mounting hole: M10 (3/8 inch) safety performance Ignition protection for safe installation aboard gasoline powered boats Heat detection function with automatic trip on current overload; reset after a short time IP66 waterproof; protected against powerful water jets What it does The fuse reacts quickly and fuses accurately. When the circuit becomes abnormal and could damage the battery pack or main circuitry, the fuse blows to protect the battery and circuitry from damage. Benefits and practical advantages Reliable overcurrent protection for current circuits Robust in harsh or outdoor environments due to ignition protection and IP66 rating Easy mounting with standard M8 stud fuse blocks and a mounting hole compatible size Automatic protection response with a straightforward reset cycle practical use scenarios Marine applications on gasolinepowered boats for main battery circuits or auxiliary circuits in the engine bay Outdoor or offgrid electrical installations such as RVs, campers, and solar/battery systems where exposure to moisture is possible Heavyduty outdoor equipment or trailers with current circuits that require reliable protection and resistance to water exposure