GB1466975A - Current limiting fuse - Google Patents

Current limiting fuse

Info

Publication number
GB1466975A
GB1466975A GB2049474A GB2049474A GB1466975A GB 1466975 A GB1466975 A GB 1466975A GB 2049474 A GB2049474 A GB 2049474A GB 2049474 A GB2049474 A GB 2049474A GB 1466975 A GB1466975 A GB 1466975A
Authority
GB
United Kingdom
Prior art keywords
fuse
arcing
main fuse
auxiliary
arc gaps
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
GB2049474A
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
Original Assignee
General Electric Co
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 filed Critical General Electric Co
Publication of GB1466975A publication Critical patent/GB1466975A/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
    • H01H85/38—Means for extinguishing or suppressing arc

Landscapes

  • Fuses (AREA)

Abstract

1466975 Fuses GENERAL ELECTRIC CO 9 May 1974 [11 June 1973] 20494/74 Heading H2G A current limiting fuse comprises a primary main fuse element 24 of, for example, silver, having a body 32 of a low-temperature-melting alloy such as lead-tin solder in intimate contact and first and second auxiliary arc gaps 38<SP>1</SP> and 3811 interconnected with an auxiliary fuse element 40, the fuse being completed by an insulating core 16 of, for example, steatite or a thermosetting composition including a filler which emits water of hydration when heated, inert granular arc quenching material 28 such as quartz sand, a housing 10 of, for example, glass, ceramic material or glass fibres mixed with epoxy resin, and electrical terminals 12, 14. The auxiliary arc gaps 381, 3811, each comprise an arcing clip (Figs. 4a, 4b, not shown) having an electrode portion 44 which is adjustable, by bending, in position relative to an adjacent fusion point on the primary main fuse elements 24. The arcing clips may also provide first and second auxiliary arc gaps adjacent fusion points of a secondary main fuse element 26, which may, for example, be only one of three secondary main fuse elements (Fig. 5, not shown). Alternatively, extensions on the arcing clip may provide auxiliary arc gaps adjacent fusion points of any number of parallel connected main fuse elements. The mode of operation of the fuse on lowcurrent overload is schematically illustrated in Figs. 6a to 6f (not shown).
GB2049474A 1973-06-11 1974-05-09 Current limiting fuse Expired GB1466975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00369051A US3813627A (en) 1973-06-11 1973-06-11 Current limiting fuse having improved low current interrupting capability

Publications (1)

Publication Number Publication Date
GB1466975A true GB1466975A (en) 1977-03-16

Family

ID=23453882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2049474A Expired GB1466975A (en) 1973-06-11 1974-05-09 Current limiting fuse

Country Status (7)

Country Link
US (1) US3813627A (en)
JP (1) JPS5027940A (en)
CA (1) CA992593A (en)
DE (1) DE2427708A1 (en)
DK (1) DK308874A (en)
FR (1) FR2232829A1 (en)
GB (1) GB1466975A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843948A (en) * 1973-09-12 1974-10-22 Chase Shawmut Co High-voltage fuse
US3866318A (en) * 1973-09-12 1975-02-18 Chase Shawmut Co Method of manufacturing high-voltage fuse
US3986157A (en) * 1975-10-16 1976-10-12 The Chase-Shawmut Company Electric fuse having substantially prismatic casing
US4123738A (en) * 1977-05-16 1978-10-31 Mcgraw-Edison Company High voltage current limiting fuse
US4260976A (en) * 1979-02-09 1981-04-07 Westinghouse Electric Corp. Current limiting fuse with auxiliary element
US4388603A (en) * 1981-05-15 1983-06-14 Mcgraw-Edison Company Current limiting fuse
US4420735A (en) * 1981-07-20 1983-12-13 Rte Corporation Low current clearing back up fuse
JPS60147142U (en) * 1984-03-09 1985-09-30 株式会社明電舎 current limiting fuse
US5463366A (en) * 1992-09-17 1995-10-31 Cooper Industries, Inc. Current limiting fuse and dropout fuseholder
WO2005081278A1 (en) * 2004-02-21 2005-09-01 Wickmann-Werke Gmbh Coil melt conductor comprising an insulating intermediate coil for a fuse element
US20160189905A1 (en) * 2014-12-31 2016-06-30 Eaton Corporation Protection Device Employing Current Limiting Fuse and Vacuum Fuse
DE102015225376B3 (en) * 2015-12-16 2017-01-19 Phoenix Contact Gmbh & Co. Kg Overvoltage protection device of type II
US11393651B2 (en) * 2018-05-23 2022-07-19 Eaton Intelligent Power Limited Fuse with stone sand matrix reinforcement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL294395A (en) * 1962-06-22
US3243552A (en) * 1964-09-08 1966-03-29 Mc Graw Edison Co Current limiting fuse
US3287525A (en) * 1965-02-26 1966-11-22 Mc Graw Edison Co Terminal means for fusible element of current limiting fuse
US3603909A (en) * 1970-07-06 1971-09-07 Chase Shawmut Co Multi-fuse-link high-voltage fuse having a link-supporting mandrel and means for equalizing the interrupting duty of the fuse links
US3733572A (en) * 1970-12-24 1973-05-15 Mc Graw Edison Co Current limiting fuse

Also Published As

Publication number Publication date
DE2427708A1 (en) 1975-01-02
CA992593A (en) 1976-07-06
US3813627A (en) 1974-05-28
JPS5027940A (en) 1975-03-22
FR2232829A1 (en) 1975-01-03
DK308874A (en) 1975-01-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee