Drop-out fuse cutout and load switching fuse cutout are of outdoor used high voltage protective device. To be connect with incoming feeder of distribution transformer or distribution lines it mainly protect transformer or lines from short circuit and overload, and on/off loading current. Drop-out fuse cutout is composed of insulat insulator supports and fuse tube, static contacts is fixed on two sides outer phenolic compound paper tube or epoxy glass tube. Load switching fuse cutout provides enforedelastic auxiliary contacts and arc-extinguishing exclosure for switching on/off loading current.