FCF80RN

FCF80RN is an fuse model which designed by few brands such as Eaton, Filnor, Siba, etc. It is a fuse type of ringless and shielded design criteria, which is an inline fuse suitable for applications before or just after the load. As the name implies, its maximum voltage is 80V and nominal current is up to 30A, hence it is widely used in residential, commercial and industrial applications.

Application Field

FCF80RN fuse is specially designed for the 30A circuit with voltage rating up to 80V. Its main application fields has been listed here.

• Protection of low-voltage lighting circuits.
• Protection of electrical equipment in the general industrial field.
• Protection of appliances, illumination and heating.
• Protection of circuits in breakers.
• Protection of power supplies.

Working Principle

FCF80RN is a Cartridge fuse that will operate by automatically electricity-interrupting circuit when an overload or short-circuit current occurs. It is a current dependent device which melts and open the circuit after the current flow exceeds the rated value.

As the current flowing through the fuse increases, the heat generated across the fuse melts the metal element, thus deforming it and increasing the distance between its contact points. This opens the contact and interrupts the circuit. When the excess current disappears, the contact points are able to reconnect with each other and the circuit is back to normal.

Drawbacks

Despite the convenience and cost-effectiveness of the FCF80RN Fuse, it suffers from several drawbacks.

• The rated voltage of the fuse is limited to 80V.
• It can be too slow to respond in comparison with other protection elements while the short-circuit current is very high.
• The current limit of the fuse must match the rated current in order to be effective.

Conclusion

FCF80RN fuse is an low-cost and effective solution to protect circuits with up to 80V and 30A current rating. With its universal application in residential, commercial and industrial areas, it is one of the most widely used and popular fuses.