Drop-out Fuse cutouts and load switching fuse cutouts are for outdoor used high voltage protective device .To be connected with in coming feeder of distributing transformer or distribution lines it mainly protect transformer or lines from short circuit and overlord , and on/off loading current. Type: ETNF-1 Rated voltage :15 Rated current :100/ 200 Breaking current :10000/12000 Impulse voltage :110 Power frequency withstand voltage :40 Leakage distance(MM) :250