... indoor AC highn-voltage vacuum load switch , which is also named ZFN25 load switch , is the triphase FZRN25-12D/T200-31.5 Indoor High-voltage ... Vacuum Load Break Switch, which is also named ZFN25 load switch , is the triphase high voltage switch ... loop current, unload transformer and cable FZRN25-12D/T200-31.5 Indoor High-voltage Vacuum Load Break Switch