[Product Advantages]: [1] The product is made of PA66 flame-retardant material, offering high and low temperature resistance and environmental protection. It meets requirements for good mechanical strength, insulation, heat resistance, and flame resistance, ensuring no breakage, deformation, burning, or short circuit under normal operating conditions. [2] All fasteners are constructed from stainless steel. The input and output terminals of the fuse box are secured with tightening screws for faster installation, while self-tapping screws are used to mount the fuse box, enabling easier and safer setup. [3] The product includes labeled stickers that can be affixed to connected electrical devices. In the event of a blown fuse, users can quickly identify the affected device, saving time and effort during troubleshooting. [4] The product comes with multiple spare fuses. When a fuse blows, it can be immediately replaced with the included backup. Fuses are provided in various amperages, allowing selection based on the specific electrical load. [Product Model] ZH-979A2 [Input Rated Voltage]: 32V [Input Rated Current]: 75A [Maximum Output Current]: 20A per circuit [Material]: PA66 body, PC dust cover, nickel-plated copper terminals, stainless steel screws, PP70 stickers [Single Wire Terminal]: M4 threaded stud (20A 32V DC max) [Wire Specifications]: #12-16AWG Accepts ATO or ATC fuses from 1A to 20A [Installation Range]: Suitable for installation in cars, off-road vehicles, RVs, buses, yachts, and boats [Scope of Use]: Can be directly connected to any electrical appliance in automotive or marine applications, such as dome lights, headlights, sidelights, fog lights, warning lights, car refrigerators, chargers, fans, and TVs [Product Accessories]: Sticker x2; Self-tapping screw x4; 20A fuse x2; 10A fuse x4; 5A fuse x8; 3A fuse x10 [Fuse Function]: In the event of a circuit malfunction or abnormal current increase, the fuse protects critical components by interrupting excessive current flow. This helps prevent damage to electronic equipment, circuit burnout, or fire hazards. Each fuse has a specific current rating, and when the current exceeds this rating, the fuse element melts, breaking the circuit. When properly installed, the fuse disconnects power when current rises to unsafe levels, ensuring safe operation of the electrical system.