EXPLODING-WIRE FUSE Russian patent published in 1997 - IPC

FIELD: electrical and power engineering; emergency and on-line disconnection of electric current. SUBSTANCE: inner surface of body 1 has depression filled with air; space within body, except for depression, is filled with arc-control filler; electrodes 2, 3 and destructible contact ring 4 are built integral. Loosening slits are made in the form of groover 5, 6 between electrodes and contact ring. Outer diameter of electrodes 2, 3 is 90 ± 5 mm and that of contact ring 4, 53 + 5 mm; its inner diameter is 33 + 5 mm. Indicating sensor 12 is mounted on external surface of body opposite air connector 11. EFFECT: improved reliability. 3 cl, 1 dwg