Is BS1361 type 1 or 2 ?

Cartridge fuses are an essential component of electrical systems, as they help to protect against excessive electrical currents and prevent fires or other hazards. BS1361 is a British Standard that specifies the requirements for cartridge fuses used in electrical circuits. The standard is divided into two types: type 1 and type 2.

What is the difference between BS1361 type 1 and type 2?

BS1361 type 1 and type 2 are two different versions of the standard that outline the requirements for cartridge fuses. The main difference between the two types is the maximum current rating.

BS1361 type 1 is designed for use in systems with a maximum current rating of 100A. It is suitable for use in high-power applications, such as industrial power distribution systems or commercial building systems.

BS1361 type 2 is designed for use in systems with a maximum current rating of 50A. It is suitable for use in low-power applications, such as domestic electrical systems or small commercial installations.

How do I determine which type of cartridge fuse to use?

When selecting a cartridge fuse, it is essential to consider the maximum current rating of the system and the specific requirements outlined by the relevant standard, such as BS1361.

If the system has a maximum current rating of 100A or more, then BS1361 type 1 cartridge fuses should be selected. If the system has a maximum current rating of 50A or less, then BS1361 type 2 cartridge fuses should be selected.

Conclusion

BS1361 is a standard that specifies the type of supply protective device used in electrical systems. It is important to ensure that the cartridge fuse used in an application meets the relevant requirements outlined by the standard. By understanding the differences between BS1361 type 1 and type 2, and selecting the appropriate cartridge fuse for a given system, users can help to ensure the safety and reliability of their electrical installations.