GB399181A - Improvements relating to electric circuit breakers - Google Patents

Improvements relating to electric circuit breakers

Info

Publication number
GB399181A
GB399181A GB898932A GB898932A GB399181A GB 399181 A GB399181 A GB 399181A GB 898932 A GB898932 A GB 898932A GB 898932 A GB898932 A GB 898932A GB 399181 A GB399181 A GB 399181A
Authority
GB
United Kingdom
Prior art keywords
holes
fusible
bond
studs
plate
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
GB898932A
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.)
ZF International UK Ltd
Original Assignee
Joseph Lucas 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 Joseph Lucas Ltd filed Critical Joseph Lucas Ltd
Priority to GB898932A priority Critical patent/GB399181A/en
Publication of GB399181A publication Critical patent/GB399181A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/20—Electrothermal mechanisms with fusible mass

Landscapes

  • Thermally Actuated Switches (AREA)
  • Fuses (AREA)

Abstract

399,181. Thermal switches. LUCAS, Ltd., J. and TURNER, E. O., Great King Street, Birmingham. March 29, 1932, No. 8989. [Class 38 (v).] An overload thermal circuit - breaker comprises a rotary contactcarrying member c movable by hand into several switching positions against the action of centralizing return springs h and connected by a fusible metal bond o to a control disc p having means such as a circle. of holes co-operating with two studs q for holding the disc and therefore also the member c in its set position. A spring j presses the members c, p to the right so that the holes firmly engage the studs q. The springs h are connected to a plate f having pins i passing through holes in the member c and the plate f is adapted to be rotated by a detachable key g. When an overload occurs in a heating coil s the fusible bond o melts allowing the member c to rotate into its off position. The fusible bond then resets and the switch may again be moved " on."
GB898932A 1932-03-29 1932-03-29 Improvements relating to electric circuit breakers Expired GB399181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB898932A GB399181A (en) 1932-03-29 1932-03-29 Improvements relating to electric circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898932A GB399181A (en) 1932-03-29 1932-03-29 Improvements relating to electric circuit breakers

Publications (1)

Publication Number Publication Date
GB399181A true GB399181A (en) 1933-09-29

Family

ID=9863220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB898932A Expired GB399181A (en) 1932-03-29 1932-03-29 Improvements relating to electric circuit breakers

Country Status (1)

Country Link
GB (1) GB399181A (en)

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