5BHLE-30E

Fuses

Fuses are active devices used to protect circuits from high current and short circuits. Fuses’ function is to disconnect a circuit when it cannot handle the amount of current generated in the circuit. There are a few different types of fuses, but the main one is called a 5BHLE-30E fuse. Let’s take a look at the application field and working principle of this type of fuse.

Application Field

The 5BHLE-30E fuse is a one-time only fuse, which means it cannot be reused after it has been used up. It is mainly used in places where low thermal shock protection is needed, such as motors, transformers, generators, etc. It can also be used to protect circuits against overload and short circuit.

Working Principle

The 5BHLE-30E fuse works by creating an electric arc that breaks when the current exceeds the fuse\'s rated current. This electric arc is created when the current passing through the fuse reaches its limit. When the current passes through the arc it creates a resistance that in turn causes heat. This heat is what causes the arc to break and thus protects the circuit from overload or short circuit.

The 5BHLE-30E fuse is made from a zinc oxide ceramic tube which is surrounded by a nickel plated copper wire. The copper wire is connected to the fuse\'s terminals which act as the electric conductor. The tube is then placed in a metal casing to contain the arc and prevent it from spreading to other connected components.

When the current exceeds the rated value of the fuse, the heat created by the current passing through the wire will cause the fuse to expand. This expansion will cause a compression of the copper wire and cause it to break, thus cutting off the current.

Conclusion

The 5BHLE-30E fuse is an important component for protecting circuits against overload and short circuits. This type of fuse works through creating an electric arc when the current passes through it and when the current exceeds the rated value of the fuse, the arc will break and thus cutting off the current. It is mainly used in places where low thermal shock protection is needed such as motors, transformers, and generators.