3AB 2.5

Fuses are critical components responsible for protecting electrical circuits from short circuits and overloads. 3AB 2.5 fuses are specially designed auxiliary fuse links for use in 3AB circuit-breakers. The 3AB 2.5 fuse links come in various types and sizes, to meet different applications.

The main application field of 3AB 2.5 fuse links is as supplementary protection for low voltage circuit-breakers, in households, offices and industrial sites. With the proper type of fuse link installed, the system can receive both quick overcurrent trip settings and low current discrimination, based on the type of fuse used, as defined by IEC 60269.

3AB 2.5 fuses work on the principle that when an excessive current passes through the fuse link, its specifications will allow for a rapid build-up in the temperature of the fuse link and a sudden increase in its electrical resistance. This increased resistance results in a decrease in current until it reaches a safe level. Once the current level has become safe, the fuse link cools down and the current can flow again until the next overcurrent situation occurs.

As soon as an overload occurs, the fuse link may be damaged due to the sudden increase in temperature. As such, it is advisable to always use the right type and rating of fuse, in order to secure the safety of the system. Furthermore, when replacing a 3AB 2.5 fuse, one must always ensure that the replacement has the same physical characteristics and rating as that of the original.

In conclusion, 3AB 2.5 fuses belong to the family of fuses and are mainly used in low voltage circuit-breakers. These fuse links work on the same principle as other general fuse links, where a rapid rise in temperature resulting from an excessive current will cause a decrease in its electrical resistance. The main advantage of 3AB 2.5 fuses is their ability to offer quick overcurrent trip settings and low current discrimination. As such, these fuses are especially suitable for system protection in low voltage circuit-breakers.