Product size: 8.7x9.2x4.2cm Input rated voltage: 32V [Input rated current]: Mainline 50A, Mainline 50A [Maximum output current]: 20A per line Material: PA66 base, PC dust cover, nickel plated copper terminal, stainless steel screw, butadiene rubber waterproof washer, PP70 sticker, silicone sealed mainline terminal: 1015/12 (50A 32V DC. max). Single wire terminal: Copper/nickel plated 1/4 "(6.3mm) (20A 32V DC max) Single wire diameter: 12-16AWG Aperture: 5.5 * 6cm [Installation range]: Can be installed on cars, off-road vehicles, RVs, buses, yachts, ships, etc., with a wide installation range [Indication function]: When the red LED light is on, it indicates that the fuse has been disconnected and needs to be replaced in a timely manner to continue operation. [Usage range] When there is a malfunction or abnormality in the circuit, the current will continue to increase, and the increased current may damage some important components or valuable equipment in the circuit, or even cause a fire. Fuses are used to protect electronic devices from high current damage and also to avoid serious damage caused by internal faults in electronic devices. Therefore, each fuse has a rated value, and when the current exceeds the rated value, the fuse will blow. If the fuse is correctly placed in the circuit, when the current abnormally rises to a certain height and temperature, the fuse will cut off the current on its own, thereby protecting the safe operation of the circuit and reducing damage to the equipment.