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GB494499A - Improvements in and relating to electric fuses - Google Patents

Improvements in and relating to electric fuses

Info

Publication number
GB494499A
GB494499A GB13214/38A GB1321438A GB494499A GB 494499 A GB494499 A GB 494499A GB 13214/38 A GB13214/38 A GB 13214/38A GB 1321438 A GB1321438 A GB 1321438A GB 494499 A GB494499 A GB 494499A
Authority
GB
United Kingdom
Prior art keywords
substance
fuse element
relating
iron
electric 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
GB13214/38A
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 GB494499A publication Critical patent/GB494499A/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

494,499. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. May 3, 1938, No. 13214. Convention date, May 4, 1937. [Class 38, (i)] By the addition of a suitable substance the beads formed by the element fusing and sintering with the filling medium are rendered less resistant at first, the proportion of the substance then diminishing as the process continues so as to increase the resistance. The additional substance may be potassium silicate, aluminium oxide or an iron compound and it may be applied as a coating to the grains of the filler or to the fuse element itself. A conductor parallel to the fuse element and composed of iron may serve to furnish the additional substance.
GB13214/38A 1937-05-04 1938-05-03 Improvements in and relating to electric fuses Expired GB494499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE494499X 1937-05-04

Publications (1)

Publication Number Publication Date
GB494499A true GB494499A (en) 1938-10-26

Family

ID=6544727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13214/38A Expired GB494499A (en) 1937-05-04 1938-05-03 Improvements in and relating to electric fuses

Country Status (1)

Country Link
GB (1) GB494499A (en)

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