China Fuse Block 12 Way Fuse Block, Negative Bus Fuse Box with Waterproof Cover and LED Warning Indicator Damp Proof Negative,Fuse Holder for Vehicle Car Boat-DC 12-24V Boat Fuse Panel锛圓 Pack of Fuses Included锛? Product Product Specification Product namefuse blockNet Weight298g Indicator ColorredGross Weight340g Model NumberQR1714CertificationCE, ROHS,SGS Typefuse box, fuse holder,fuse blade blockApplicationCar,SUV,Motor homes,Bus,Yacht,Ship,etc. MaterialPBT body, PC,Nickel-plated copper,PPBrand nameQR Size138.25*85*36.5mmInput Rated Current100A Input Rated Voltage32VMain wire#4-6 Maximum output current30A each circuitSingle wire#12-16 Main line terminalM5 threaded studSingle wire terminalM4 threaded stud How is the working principle Of the fuse in fuse block ? A fuse is an electrical component installed in a circuit to ensure the safe operation of the circuit. Fuses, not only have fuses on 3C products, but also must be installed on ordinary cars or electric cars. The fuse sheet used in a car or boat is composed of a plastic sheet and two metal sheets. The function of the fuse is that when the circuit fails or is abnormal, the current will continue to rise, and the rising current may damage the components, or burn the circuit or even cause a fire. If a fuse is installed in the circuit, it will blow the fuse to cut off the current when the current rises abnormally to a certain height, playing a role in protecting electrical appliances. The working principle of the fuse is that when the current flows through the conductor, the conductor will have a certain resistance, so the conductor will heat up. After the material and shape of the fuse are determined, the resistance is also determined. When the current flows through it, it will be It will generate heat, and its heat will increase with the increase of time. The size of current and resistance determine the speed of heat generation. The structure of the fuse and its installation status determine the speed of heat consumption. If the speed of heat generation is less than that of heat dissipation At speed, the fuse will not blow. If the rate of heat generation is equal to the rate of heat dissipation, it will not melt for a long time. If the rate of heat generation is greater than the rate of heat dissipation, then more and more heat will be generated, and the increase in heat will be Will cause the temperature to rise, when the temperature rises above the melting point of the fuse, the fuse will blow. FAQ Q): How to process an order? A: Send your sample or drawing request 鈫?Feedback with quotation(1~3 days) 鈫?Confirm quotation and make payment 鈫?Make mould if need(7 days) 鈫扢old test 鈫?Making samples(1~3 days)鈫扴amples test(Approval) 鈫抪lace order for Mass production(2~3 weeks)鈫扱uality checking鈫扨acking 鈫扗elivery 鈫扐fter Service 鈫扲epeat Order. Q: What about your delivery time? A: Different products and quantities have different procedures and different production time. Normally in 2-3 weeks.China Fuse Block website:http://www.qiruiautopart.net/fuse-block/