[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 adhesive labels that can be affixed to connected electrical devices according to their designated names. In the event of a blown fuse, users can quickly identify the affected device, saving time and effort during troubleshooting. [4] The product comes supplied with multiple spare fuses. When a fuse blows, it can be immediately replaced with a backup fuse included in the package. Multiple amperage options are provided, allowing selection based on the specific electrical load requirements. [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 circuit in vehicles or marine applications, such as dome lights, headlights, side marker lights, fog lights, warning lights, car refrigerators, chargers, fans, car TVs, etc. [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 condition causing excessive current flow, the fuse protects critical components by interrupting the circuit. Fuses prevent damage to electronic equipment due to overcurrent and help avoid risks such as circuit damage or fire. Each fuse has a rated current value; when the current exceeds this rating, the fuse element melts, breaking the circuit. When properly installed, the fuse will disconnect power when current rises to a dangerous level, ensuring safe operation of the electrical system.