FNQ-R-1-4/10

Electrical, Specialty Fuses

FNQ-R-1-4/10 fuses are among the most common type of specialty electrical fuses in use today. In this article, we will explore the application field and working principle of FNQ-R-1-4/10 fuses.

Application fields

FNQ-R-1-4/10 fuses are especially suitable for non-inductive cases, such as those present in electronic controls and other places of use with inductive currents. This type of fuses can handle a broad range of applications thanks to its time-delay feature. This fuse can also be used in the power industry, in distribution networks, power plants, switchboards, power transformers, electric drive systems, and wherever reliable overcurrent protection is required.

Working Principle

The FNQ-R-1-4/10 fuse operates on a dual role system. It contains two different lengths of wire coils, each of which responds to different levels of intensity. The first coil is designed to handle small current surges, while the second coil is designed to handle heavy and prolonged current overloads.

Both coils are isolated from each other and held by an arc-resistant bridge, which works in such a way that when current overloads the first coil, the bridge is disconnected from that coil and then links it to the secondary coil, thereby allowing the current to flow without encountering further harm to the system.

Once the current is discharged, the bridge releases the shorted coil and reconnects it to the first coil. This action effectively returns the system to its original protection level.

Advantages

One of the primary advantages of FNQ-R-1-4/10 fuses is their ability to withstand high currents in the event of an overload. This makes them ideal for a variety of industrial and commercial applications. Furthermore, the fuse\'s dual-coil system provides a reliable level of protection, as it is capable of responding to different levels of intensity. The fuse also offers a high degree of versatility, as it can be used in many different power circuits.

Disadvantages

The primary disadvantage of the FNQ-R-1-4/10 fuse is its relatively slow response time. This can be a problem when an overload occurs quickly or exceed the current limits of the device. Additionally, this type of fuse is more expensive than other specialty fuses, so it may not be the best choice for some applications.

Conclusion

FNQ-R-1-4/10 fuses are among the most reliable specialty electrical fuses available today. They are well suited for a wide range of applications, from industrial and commercial to residential, thanks to their high-current capabilities and dual-coil protection. However, their relatively slow response time and higher cost might make them unsuitable for some applications.