If we consider the load breaker in more detail, we can make an important conclusion that it is just an ordinary disconnector that is equipped with the simplest arcing chamber.
As statistics show, load switches began to be used approximately sixty ago in an electrical installation from 3 to 10 kV when using an expensive switch is generally uneconomical.
In those days, this unit was made in the form of the simplest mechanism for separation and high-quality fuse, which is designed for high loads. This combination was intended to turn off and on the idle currents, as well as turn on the load currents, as a result, the fuse served an important role in protecting the electrical installation from overload current and sudden short circuit. Continue reading