Gerneral
FN12-12 and FN12-12R is ofthrcc phases indoor use AC high voltage load switch for breaking and makeing the circuit of 50HZ,12KV system under rated loading,closed loop current,no-loading transformer,cable charged current adn short cicuit current,The load switch equipped with earth switch can withstand short circuit current,and m-ainly used in power distribution substation and industrial electrical equipment where three phase closed loop cicuit or bottom power supply system for control and protection.