GB912624A - Improvements in or relating to electric fuses - Google Patents

Improvements in or relating to electric fuses

Info

Publication number
GB912624A
GB912624A GB3771359A GB3771359A GB912624A GB 912624 A GB912624 A GB 912624A GB 3771359 A GB3771359 A GB 3771359A GB 3771359 A GB3771359 A GB 3771359A GB 912624 A GB912624 A GB 912624A
Authority
GB
United Kingdom
Prior art keywords
insert
path
current
ring
fuses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3771359A
Inventor
William James Elliott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3771359A priority Critical patent/GB912624A/en
Publication of GB912624A publication Critical patent/GB912624A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/08—Fusible members characterised by the shape or form of the fusible member
    • H01H85/10—Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing

Landscapes

  • Fuses (AREA)

Abstract

912,624. Fusible cut-outs. GENERAL ELECTRIC CO. Ltd. Nov. 4, 1960 [Nov. 6, 1959], No. 37713/59. Class 38 (1). A fuse element consists of a flat strip of a high melting-point metal, 1, such as silver, in which a trapezoidal slot, 2, is cut to divide a current into two paths, 3 and 4. A portion of path, 4, is removed and replaced by an insert, 5, of low-melting-point metal such as a tin alloy. Insert, 5, is surrounded by a close-fitting iron ring, 6, and offers a high impedance to a current surge, thereby causing a large current flow through path 3 which fuses, with the subsequent fusing of insert 5. Overload currents cause eddy-current heating of the ring 6, which, together with the direct heating effect of the overload currents, fuses insert 5, causing subsequent fusing of the path 3. Transient overloads will not fuse insert 5, the energy being absorbed in ring 6. Arcing on fusing may be reduced by suitably proportioning the two paths 3 and 4.
GB3771359A 1959-11-06 1959-11-06 Improvements in or relating to electric fuses Expired GB912624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3771359A GB912624A (en) 1959-11-06 1959-11-06 Improvements in or relating to electric fuses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3771359A GB912624A (en) 1959-11-06 1959-11-06 Improvements in or relating to electric fuses

Publications (1)

Publication Number Publication Date
GB912624A true GB912624A (en) 1962-12-12

Family

ID=10398486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3771359A Expired GB912624A (en) 1959-11-06 1959-11-06 Improvements in or relating to electric fuses

Country Status (1)

Country Link
GB (1) GB912624A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507384A1 (en) * 1981-06-03 1982-12-10 Gen Electric HIGH VOLTAGE FUSE
GB2174256A (en) * 1985-04-17 1986-10-29 Westinghouse Electric Corp Current-limiting fuse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507384A1 (en) * 1981-06-03 1982-12-10 Gen Electric HIGH VOLTAGE FUSE
GB2174256A (en) * 1985-04-17 1986-10-29 Westinghouse Electric Corp Current-limiting fuse
GB2174256B (en) * 1985-04-17 1989-07-05 Westinghouse Electric Corp Current limiting fuse with less inverse time-current characteristic

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