I-fuse yokuyekasika ngaphandlekunye nokulayisha i-fuse yokutshintshasika ngaphandlezizixhobo zangaphandle ezisetyenziselwa ukhuseleko lombane ophezulu, iTobe idibanisa ne-incomin-g feeder ye-transformer yokusabalalisa okanye imigca yokusasaza, ikhusela ikakhulu imigca ye-transformeror ukusuka kwisiphaluka esifutshane kunye nomthwalo ogqithisiweyo, kunye nokulayisha / ukuvala ukulayisha, okwangoku, i-Drop-out fuse cutout yenziwe ngenkxaso ye-insulat insulator kunye netyhubhu ye-fuse, abafowunelwa be-static bagxininiswe kumacala amabini enkxaso yetyhubhu kunye ne-fuse yoqhagamshelwano efakwe kumacala amabini e-fuse. yenziwe ityhubhu ye-arcexting yangaphakathi. Ityhubhu yangaphandle yephenolic ekhompawundiweyo yephepha okanye i-epoxy glasstube, Umthwalo wokutshintsha i-fuse cutout ubonelela nge-enfored elastic axiliry contacts kunye ne-arc-extinguishing exclosure yokucima ukulayishwa kwangoku.