VS1-12 mndandanda wolimba womata wotsekera m'nyumba ndi chosinthira chamkati chamagetsi champhamvu cha magawo atatu chokhala ndi voteji ya 12kV ndi ma frequency a 50 Hz.Imagwiritsidwa ntchito ngati chida chodzitetezera komanso chowongolera chifukwa cha vacuum circuit breaker.Ubwino wapadera ndi woyenera makamaka pamachitidwe omwe amafunikira mafunde apano kapena angapo afupipafupi.
VS1-24 mndandanda zomata zomata zotsekera m'nyumba zovundikira zomangika zokhazikika, zomwe zimagwiritsidwa ntchito makamaka pa switchgear yokhazikika.Wophwanyira dera atha kugwiritsidwa ntchito pawokha kapena pamagetsi amagetsi, chosinthira bokosi kapena makina osiyanasiyana osapatsa mphamvu.