It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit and single-phase earthing fault.
Isetshenziselwa kakhulu ukusabalalisa amandla kagesi nokuvikela amasekethe nemishini kagesi ngokumelene ukulayisha ngokweqile, i-voltage engaphansi, iphutha elifushane lesifunda kanye nesigaba esisodwa.