GB509130A - Improvements in and relating to electric fuses - Google Patents

Improvements in and relating to electric fuses

Info

Publication number
GB509130A
GB509130A GB1318/39A GB131839A GB509130A GB 509130 A GB509130 A GB 509130A GB 1318/39 A GB1318/39 A GB 1318/39A GB 131839 A GB131839 A GB 131839A GB 509130 A GB509130 A GB 509130A
Authority
GB
United Kingdom
Prior art keywords
fuse
jan
series
spring
terminal
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
GB1318/39A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB509130A publication Critical patent/GB509130A/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
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
    • 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
    • H01H85/46—Circuit arrangements not adapted to a particular application of the protective device
    • H01H2085/466—Circuit arrangements not adapted to a particular application of the protective device with remote controlled forced fusing

Landscapes

  • Fuses (AREA)

Abstract

509,130. Electric cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 14, 1939, No. 1318, Convention date, Jan. 14. 1938. [Class 38 (i)] A fusible cut-out is provided with a remotely. controlled heating device p, and two or more soldered connections, such as nand o of different melting points arranged in parallel and connected in series with the fusible conductor c so that under prolonged overloads insufficient to fuse the element c, the connection n with the lower melting point melts and allows the current to be interrupted by an auxiliary fuse k of low rating in series with the connection n. In the case of reverse current, the heater is put into operation by a relay and the connections at n and o are melted in turn. The element c is arranged between two contact plates g and f, the latter being directly connected to the terminal d. The plate g is electrically connected to the terminal e through a contact i under the control of a spring m and the auxiliary fuse k controlled by a spring m<SP>1</SP>. The heating device consists of a heating coil or of a container p containing a compound which generates heat when initially heated by a wire r. The element of the fuse k may consist of a silver wire coated with a solder of lead, tin or an alloy which delays the response of the element.
GB1318/39A 1938-01-14 1939-01-14 Improvements in and relating to electric fuses Expired GB509130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE509130X 1938-01-14

Publications (1)

Publication Number Publication Date
GB509130A true GB509130A (en) 1939-07-11

Family

ID=6547138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1318/39A Expired GB509130A (en) 1938-01-14 1939-01-14 Improvements in and relating to electric fuses

Country Status (1)

Country Link
GB (1) GB509130A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673911A (en) * 1949-06-10 1954-03-30 Driescher Fritz Fuse for low and high voltage current
US2766351A (en) * 1955-01-28 1956-10-09 Chase Shawmut Co Enclosed switch and fuse units
CN111584308A (en) * 2020-03-23 2020-08-25 中国航天时代电子有限公司 Replaceable contact device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673911A (en) * 1949-06-10 1954-03-30 Driescher Fritz Fuse for low and high voltage current
US2766351A (en) * 1955-01-28 1956-10-09 Chase Shawmut Co Enclosed switch and fuse units
CN111584308A (en) * 2020-03-23 2020-08-25 中国航天时代电子有限公司 Replaceable contact device

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