FNA-1-1/2

The FNA-1-1/2 is a type of electrical speciality fuse designed to protect circuits from excessive currents. The fuse is composed of three parts: an outer glass tube, a metal conductor, and and a detonator or thermal fuse within the conductor. The detonator will break when the current passing through the fuse reaches a certain level, preventing the flow of current and thereby providing circuit protection.

FNA-1-1/2 fuses are typically used in circuits with high currents, such as those found in commercial and industrial wiring. For example, they are often found in the wiring systems of factories, warehouses, and other large buildings. Additionally, they are often used in electronic equipment and appliances, such as computers, TVs, and microwaves.

The FNA-1-1/2 fuse operates according to two basic principles. Firstly, it is a thermal fuse, which means that it is designed to break when the current passing through it reaches a certain temperature. This is caused by the buildup of heat in the metal conductor within the fuse, which causes the detonator to break. This prevents further current from flowing, protecting the circuit.

The second principle of the FNA-1-1/2 fuse is that it is an overcurrent fuse. This means that when the current passing through the fuse exceeds a certain limit, the detonator will break, causing the circuit to be disrupted. This prevents the current from further damaging the circuit.

In conclusion, the FNA-1-1/2 is an electrical speciality fuse designed to protect circuits from excessive currents. It operates according to two basic principles: a thermal fuse which breaks when the current reaches a certain temperature, and an overcurrent fuse which breaks when the current exceeds a certain limit. The FNA-1-1/2 is typically used in high current circuits, such as those found in commercial and industrial wiring, as well as electronic equipment and appliances.