Umqhekezi wesekethe wetyala elibunjiweyo le-MCCB

Oyena mntu uqhagamshelana nayei-circuit breaker ene-voltage ephantsiivaliwe ngesandla okanye ngombane. Emva kokuba uqhagamshelwano oluphambili luvaliwe, indlela yokukhubeka ekhululekileyo ivala uqhagamshelwano oluphambili kwindawo evaliweyo. Ikhoyili yengaphezulu kokukhululwa kwangokukwaye into yobushushu yokukhululwa kobushushu iqhagamshelwe ngokulandelelana nesekethe ephambili, kunye nekhoyili yeukukhululwa kwe-undervoltageiqhagamshelwe ngaxeshanye nombane.
Xa isekethe ifinyeziwe okanye ixinene kakhulu, i-armature ye-ukukhutshwa okugqithisileyoiza kutsala ukuze yenze indlela yokukhubeka ngokukhululekileyo isebenze, kwaye uqhagamshelwano oluphambili luya kuqhawula isekethe eyintloko.
Xa isekethe igcwele kakhulu, into yokufudumeza ye-thermal tripper iya kugoba ishidi le-bimetal, ityhale indlela yokugoba ekhululekileyo ukuba isebenze, kwaye umnxibelelwano oyintloko uya kuyiqhawula isekethe eyintloko.
Xa isekethe ikwiumbane ongaphantsi kwamandla, isigqubuthelo seukukhululwa kwe-undervoltageiyakhululwa, nto leyo eyenza ukuba indlela yokukhubeka ekhululekileyo isebenze, kwaye uqhagamshelwano oluphambili luqhawula isekethe ephambili.
Xa iqhosha lokukhulula i-shunt licinezelwe, i-armature yeukukhululwa kwe-shuntiyatsalwa, nto leyo eyenza ukuba indlela yokukhubeka ingasebenzi, kwaye uqhagamshelwano oluphambili luqhawula isekethe ephambili