Fuse is our customary title, and its official title is fuse. The use of car safety wire is very different from that of home safety wire. When the circuit current is abnormal and exceeds its rated current, the fuse acts as a circuit maintenance barrier. Automotive safety wires are roughly divided into two types: fast-blow safety wires and slow-blow safety wires.

Safety wires commonly used in cars include high current safety wires and medium and low current safety wires. Generally, it is easier to come into contact with the low and medium current safe wire. Low and medium current cables can be roughly divided into chip cables (including automatic cables and mini cables), piercing cables, screw cables, and tubular cables and flat cables. Among them, the medium-sized ATO or small-sized fast-melting sheet-type safe wire that we can contact. The chip safety wire can carry small current and short-time pulse current, such as headlight circuit, rear glass defrosting, etc.

Standard in the world of car chip safety silk colors: 2A gray, 3A purple, 4A pink, 5A orange, 7.5A brown, 10A red, 15A blue, 20A yellow, 25A clear colorless, 30A green and 40A dark orange . Depending on the color, the size of the different amperage can be clearly distinguished. The conductors in the 4-piece secure wire are made of a metal similar to solder, which has a lower melting point than the normal wire itself. The dimensions of this conductor are calibrated very precisely so that when the rated current is reached, enough heat is generated to melt the conductor and break the circuit. The safe wire has two important working parameters, one is the working voltage, and the other is the rated current. The owner should choose according to the voltage and current in the circuit when purchasing or replacing.