Vacuum interrupter(VI) mo contactor e masani ona faʻaaogaina e faʻafesoʻotaʻi soo ma tipi ese le galuega masani current.This faasologa o vacuum interruper talia ceramic insulating teutusi ma Cu (W + WC) mea faʻafesoʻotaʻi ma le tau tipiina maualalo. foliga o le faʻatuatuaina faʻatinoga, ola umi, ma le laʻititi laʻititi, etc.Contactor e fetaui ma ia o loʻo i ai le lelei o le tausiga faigofie, leai se lamatiaga o le pa, leai se filogia ma maualalo le pisa, ma isi mea, ma e mafai ona faʻaaogaina lautele i le eletise, masini, metallurgical, vailaʻau ma laʻu matagaluega, ma isi, e pulea le felauaiga ma le tufatufaina system.E sili ona talafeagai mo le faʻagaioiga masani o le tipiina o le uta faʻaogaina ma faʻaaogaina i nofoaga o loʻo faʻaaogaina soo.