Item Type: Fuse Block Product Model: CS-664A2 Product Size: Approx. 138 x 85 x 37mm / 5.43 x 3.35 x 1.46in Product Material: PBT Body + PC Waterproof and Dustproof Cover + Nickel Plated Copper Connection Terminal + PPX40 sticker Input Rated Voltage: 32V Input Rated Current: 100A Output Maximum Current: 30A Per Circuit Indicator Colour: Red Main Wire Terminal: M5 Threaded Stud Main Wire: #4-6 Single Wire Terminal: M4 Threaded Stud Single Wire: #12-16 Indicator Function: When the red LED light is on, it means that the fuse has been disconnected, and the fuse needs to be replaced in time to continue running. Product Installation Range: It can be installed on cars, villas, RVs, buses, yachts, boats, etc. Scope of Product Use: It can be directly connected to the line of any electrical appliance on the car and ship, such as dome light, car headlight, width light, fog light, warning light, car refrigerator, car charger, car fan, car TV, etc. Function of Fuse: When the circuit fails or is abnormal, the current continues to increase, and the increased current may damage some important components or valuable components in the circuit, and may also burn the circuit or even cause a fire. Fuses protect electronic equipment from over current and also protect electronic equipment from serious damage caused by internal faults. Therefore, there is a rating on each fuse, and when the current exceeds the rating, the fuse will blow. If the fuse is correctly placed in the circuit, the fuse will cut off the current by itself when the current abnormally rises to the upper limit height and upper limit temperature, thereby protecting the circuit operation.