Automobile fuse is a commonly used common name, the official name is "fuse", and its purpose is similar to household fuse. The fuse acts as a circuit protection barrier when the circuit current is abnormal and exceeds its rated current.
Types and specifications of automotive fuses
One is the rated current and the other is the rated voltage are two important working parameters of the fuse. The corresponding fuse should be selected according to the current and voltage of the circuit.
Structurally, the GM fuse adopts a plug-in design. Engineering plastic shell and fuse shell made of zinc or copper melt structure wrapping and metal melt and pin connection.
Metals like solder make the conductors in automotive fuses. It has a lower melting point than ordinary wire. The wire should be sized very accurately so that when the rated current is reached, enough heat is generated to fuse the wire and open the circuit. One is the working voltage and the other is the rated current, which are two important working parameters of the fuse. When purchasing or replacing, the owner should choose according to the voltage and current in the circuit.
Plug-in fuses can be divided into:
Large automotive fuses and medium automotive fuses and small automotive fuses and subminiature plug-in fuses. 1-40 amps (a) to 30-120 amps (a) and a rated voltage of 32 volts (V) for the rated current range.
Fork bolt fuses can be divided into:
Large fork bolt fuse and small fork bolt fuse. The rated voltage is 32/125 volts (V) and the rated current is 30-150 amps (a) and 40-800 amps (a).
Automotive glass tube fuses can be divided into:
10×38mm glass fuse and 6.35×30mm glass tube fuse and 6.35×31.75mm glass fuse. The rated voltage is 32 volts (V) and the rated current is 0.5-20 amperes (a) to 10 x 38mm20-80 amperes (a).
Automobile fuse model and specification
From the appearance, car fuses are different from ordinary household fuses. It is more "mini" than household fuses and uses different colors to differentiate the size of the amp number.
40A deep orange and 30A green and 25A colorless and transparent and 20A yellow and 15A blue and 10a red and 7.5A brown and 5A orange and 4A pink and 3A purple and 2A gray This is a set of fuse international color standards.
According to different colors, we can clearly distinguish the size of different amperages.
When the current in the circuit is too large, the car fuse will blow to protect the circuit. At this time, the electrical appliances on the circuit cannot work normally because the car fuse is blown and the circuit is in a normal state. Now, we need to replace it.