[go: up one dir, main page]

GB1515749A - Manually operable circuit interrupter with automatic current overload protection - Google Patents

Manually operable circuit interrupter with automatic current overload protection

Info

Publication number
GB1515749A
GB1515749A GB39744/75A GB3974475A GB1515749A GB 1515749 A GB1515749 A GB 1515749A GB 39744/75 A GB39744/75 A GB 39744/75A GB 3974475 A GB3974475 A GB 3974475A GB 1515749 A GB1515749 A GB 1515749A
Authority
GB
United Kingdom
Prior art keywords
lever
opening
pivot
latch
trip
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
GB39744/75A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1515749A publication Critical patent/GB1515749A/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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/508—Latching devices between operating and release mechanism with serial latches, e.g. primary latch latched by secondary latch for requiring a smaller trip force
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • 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
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Landscapes

  • Breakers (AREA)

Abstract

1515749 Overload release mechanisms WESTINGHOUSE ELECTRIC CORP 29 Sept 1975 [9 Oct 1974] 39744/75 Heading H1N A manually operable multi-pole switch 9 associated with a thermal overload tripping device 11 has a contact-opening mechanism comprising a releasable arm 25 latched in an opening in a pivoted L-shaped latch lever 37 which is itself latched in an opening in a pivoted latch retainer lever 39, the latter being biased by a spring towards the latching position and engaged at its lower end by a trip-plate 55 Operation of the trip device moves trip-plate 55 to the left and consequently rotates lever 39 clockwise about pivot 45, thus releasing latch lever 37 for anti-clockwise rotation about its pivot 41 under the action of releasable arm 25 which is urged in a clockwise direction about its pivot 27 by a spring-loaded toggle mechanism 23 which opens the contacts. The latch lever 39 then comes to rest against a bent over portion 69 on the latch retainer lever 39, in which position a projection 63 bent out from the opening 43 is in a position whereby it can be engaged by the roller 59 on the end of the releasable arm for relatehing.
GB39744/75A 1974-10-09 1975-09-29 Manually operable circuit interrupter with automatic current overload protection Expired GB1515749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US513371A US3930213A (en) 1974-10-09 1974-10-09 Manually operable circuit interrupter with automatic current overload protection

Publications (1)

Publication Number Publication Date
GB1515749A true GB1515749A (en) 1978-06-28

Family

ID=24042985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39744/75A Expired GB1515749A (en) 1974-10-09 1975-09-29 Manually operable circuit interrupter with automatic current overload protection

Country Status (5)

Country Link
US (1) US3930213A (en)
BR (1) BR7506495A (en)
CA (1) CA1044288A (en)
GB (1) GB1515749A (en)
ZA (1) ZA756056B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7813109U1 (en) * 1976-12-16 1979-05-31 Fong, Lee Wen, Taichung (China/ Taiwan) Magnetic switch
US4146855A (en) * 1977-09-06 1979-03-27 Square D Company Low profile multi-pole circuit breaker having multiple toggle springs
DE2818898C2 (en) * 1978-04-27 1984-02-09 Lee, Wen-Fong, Taichung Magnetic switch
FR2448216A1 (en) * 1979-01-31 1980-08-29 Telemecanique Electrique MANUAL THERMAL AND MAGNETIC TRIP SWITCH
US5278373A (en) * 1991-10-18 1994-01-11 Square D Company Current limiting circuit breaker
US6262644B1 (en) * 2000-03-08 2001-07-17 General Electric Company Latch resetting arrangement
DE10139917A1 (en) * 2001-08-14 2003-02-27 Abb Patent Gmbh Switch lock for an electrical switching device, in particular for a motor protection switch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473901A (en) * 1947-07-31 1949-06-21 Westinghouse Electric Corp Push button operated circuit interrupter
US3179768A (en) * 1962-05-03 1965-04-20 Gen Electric Circuit breaker with mechanically isolated trip mechanism

Also Published As

Publication number Publication date
CA1044288A (en) 1978-12-12
ZA756056B (en) 1976-09-29
US3930213A (en) 1975-12-30
BR7506495A (en) 1976-08-17

Similar Documents

Publication Publication Date Title
GB1288716A (en)
US3443258A (en) Circuit breaker with trip indicator
GB1263819A (en) Circuit breaker with improved latch reset
US3605052A (en) Avoidance of switching device false off handle indication
GB1461217A (en) Circuit breaker
GB1393799A (en) Circuit breaker
GB1196797A (en) Improvements in Current-Limiting Electric Circuit Breakers.
GB1452589A (en) Circuit breaker with handle indicating means
GB635516A (en) Automatic electric circuit-breaker
GB1515749A (en) Manually operable circuit interrupter with automatic current overload protection
US2306235A (en) Circuit breaker
GB1243475A (en) Molded-case electric circuit breaker with contact arm latch
US2534938A (en) Circuit breaker
GB1390987A (en) Electrical circuit breakers
GB1505981A (en) Multi-pole excess current switch
GB1180257A (en) Improvements in Electrical Circuit Breakers of the Rotary Handle Type
GB719409A (en) Automatic electrical circuit-breakers
GB688649A (en) Improvements in current-responsive automatic electric circuit-breakers
GB1002965A (en) Improvements in electric circuit breakers
US3377574A (en) Circuit breaker resetting and closing mechanism
US3605051A (en) Avoidance of switching device false off handle indication
GB1060929A (en) High-speed pushbutton-controlled overload circuit breaker
US2673267A (en) Electric circuit breaker
GB1426642A (en) Switching mechanism copper etching process
GB784866A (en) Improvements in and relating to electric circuit breakers

Legal Events

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