The fuse of automobile

The fuse is its official name is called, the real fuse (hereinafter as easy to understand as a fuse), the most basic function of fuse is when the circuit current anomaly and exceeds its rated current fuse to circuit protection function. The fuse has two important working parameters, one is the rated current; one is the rated voltage, use the time to choose to fuse the corresponding according to current and voltage circuit.

In the structure design, insert the general vehicle fuse with fuse, with engineering plastic shell, wrapped in the melt structure made of zinc or copper, the metal melt and pin connections. Insert fuse specifications car usually 2A to 40A, the ampere fuse numerical will be noted in the top. If the fuse burned out let a numerical illegible words, we can also be judged by its color, the international standards: 2A, 3A, 4A grey purple pink, orange yellow, 5A 7.5A, 10A 15A Coffee color red, blue, yellow, 20A 25A, 30A green, colorless and transparent 40A deep orange.

Because many parts and electronic equipment on automobiles, and each device will be equipped with a fuse, so in order to facilitate future repair, every car in the design stage, designers took automotive fuses are concentrated in one place, but this place is called insurance box. Generally a car has two insurance box, one is located in the engine compartment, responsible for automobile external electrical fuse, such as engine control units, horn, glass cleaner, ABS, headlights; another in the left near, management of car electric appliances, such as window lifter, airbags, the electric chair, cigarette lighter.

Because the car is on the box, under normal circumstances do not deliberately maintenance, but need to pay attention to is the protection of insurance cover, the fuse is lost, don't let the fuse is exposed outside, so as to avoid the fuse circuit. In addition to cover the fuse, also can not use other materials to replace, because the insurance box is made of full consideration of the insulation and high temperature resistant, free to use other material covering the fuse will have the danger of fire.

How to do it yourself replacing the fuse? Find insurance box position. Side fuse box cab is generally located in the control station near the door or on the wheel below; launch insurance box inside the cabin in a vehicle engine compartment edge. Check fuse fuse fuse. According to the table to find the position fuse box lid of the table we can find the position we are looking for.The remaining steps is the use of cars equipped with special tool pull out the damaged fuse, fuse can be put on standby. At present, the vehicle using the insert fuse no positive and negative points, so as long as you pay attention to when replacing the fuse fuse size and amperes can.

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When replacing the fuse, the fuse must choose the correct amperage, do not increase the current specifications of fuse at random, but can not use wire to replace. Can not use wire replacement is easy to understand, why not use large current specifications of the insurance? Of course, but also for electrical protection in mind, can work steadily in the current conditions of 1A appliances, in greater than 1A with electrical appliances may not work properly.