GB912862A - Electric current limiting switches - Google Patents

Electric current limiting switches

Info

Publication number
GB912862A
GB912862A GB8839/60A GB883960A GB912862A GB 912862 A GB912862 A GB 912862A GB 8839/60 A GB8839/60 A GB 8839/60A GB 883960 A GB883960 A GB 883960A GB 912862 A GB912862 A GB 912862A
Authority
GB
United Kingdom
Prior art keywords
switch
trip
march
engages
button
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
GB8839/60A
Inventor
Sidney Roland Lowe
Peter Morrell
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.)
Midland Electric Manufacturing Co Ltd
Original Assignee
Midland Electric Manufacturing 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 Midland Electric Manufacturing Co Ltd filed Critical Midland Electric Manufacturing Co Ltd
Priority to GB8839/60A priority Critical patent/GB912862A/en
Publication of GB912862A publication Critical patent/GB912862A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/30—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide

Landscapes

  • Breakers (AREA)

Abstract

912,862. Automatic circuit - breakers; switches held set and freed mechanically; thermal switches. MIDLAND ELECTRIC MANUFACTURING CO. Ltd. March 14, 1961 [March 14, 1960], No. 8839/60. Class 38 (5). An overload responsive switch has a bimetallic element 15 which serves both as a release means for effecting tripping of main contacts 11, 13, and as an auxiliary contact member which engages a co-operating auxiliary contact 23 when the current through the switch approaches the value at which main contacts are tripped. In the arrangement shown, the element 15 is heated by a coil 16 and deflects to move a trip-bar 14 to release a spring-biased arm 12 carrying the main moving contacts. Before the arm 12 is released, the element 15 engages the contact 23 to complete a circuit, e.g. for an alarm. The switch is closed by a push-button 19 and may be manually released by a further push-button 18 which acts on the trip-bar 14.
GB8839/60A 1960-03-14 1960-03-14 Electric current limiting switches Expired GB912862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8839/60A GB912862A (en) 1960-03-14 1960-03-14 Electric current limiting switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8839/60A GB912862A (en) 1960-03-14 1960-03-14 Electric current limiting switches

Publications (1)

Publication Number Publication Date
GB912862A true GB912862A (en) 1962-12-12

Family

ID=9860215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8839/60A Expired GB912862A (en) 1960-03-14 1960-03-14 Electric current limiting switches

Country Status (1)

Country Link
GB (1) GB912862A (en)

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