GB709947A - Improvements in and relating to automatic electric circuit breakers - Google Patents
Improvements in and relating to automatic electric circuit breakersInfo
- Publication number
- GB709947A GB709947A GB19361/51A GB1936151A GB709947A GB 709947 A GB709947 A GB 709947A GB 19361/51 A GB19361/51 A GB 19361/51A GB 1936151 A GB1936151 A GB 1936151A GB 709947 A GB709947 A GB 709947A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- bimetal
- handle
- overload
- pivoted
- 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
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
- H01H71/08—Terminals; Connections
-
- 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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
- H01R13/447—Shutter or cover plate
- H01R13/453—Shutter or cover plate opened by engagement of counterpart
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
709,947. Automatic circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 16, 1951 [Aug. 16, 1950], No. 19361/51. Class 38(5) [Also in Group XXXVI] The circuit-breaker comprises a hinged armature normally latching a tripping mechanism, a series bimetal element fixed at one end adjacent the hinge of the armature so as to extend parallel thereto, and means for coupling the bimetal and the armature so that the latter is retractable either by warping of the bimetal on a slight sustained overload, or by a heavy overload which produces a magnetic field attracting the armature directly to the bimetal itself. The armature 37 is pivoted at 38 and has (i) a catch 39 engaging the end 40 of a tripping member 21 and (ii) a hook-portion 37<SP>1</SP> around the free end of the bimetal 30 which is secured at 31 to an adjustable plate 35. On a prolonged slight overload, the bimetal 30 bends to the right, Fig 1, carrying the armature with it, thereby releasing the member 21 which pivots counter-clockwise and carries a tension spring 26 over-centre to separate contacts 17, 18 and move the handle 25 to the Fig. 4 position. A lug 19x on a member 23 secured to the handle and pivoted at 24 engages the contact lever 19, which is pivoted at 20 to member 21, to give it a positive start. With a heavy overload, the armature is attracted to release the member 21 by the magnetic field set up by the current in the bimetal itself. The breaker is reset by moving the handle to the right from the Fig. 4 position, a lug 23<SP>1</SP> on the member 23 engaging a shoulder 21<SP>1</SP> on member 21 which is moved clockwise to re-engage parts 39, 40, the contacts being reclosed when the handle is moved back to the Fig. 1 position. The contacts 17, 18 are situated in an are chute 50 leading to a vent 52. The contact 17 is connected to a clip contact 14 . arranged to engage a blade on a panel.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US179692A US2627563A (en) | 1950-08-16 | 1950-08-16 | Electric circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB709947A true GB709947A (en) | 1954-06-02 |
Family
ID=22657582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19361/51A Expired GB709947A (en) | 1950-08-16 | 1951-08-16 | Improvements in and relating to automatic electric circuit breakers |
Country Status (3)
Country | Link |
---|---|
US (1) | US2627563A (en) |
FR (1) | FR1040106A (en) |
GB (1) | GB709947A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190013170A1 (en) * | 2017-07-05 | 2019-01-10 | Eaton Corporation | Electrical switching apparatus and adjustable trip assembly therefor |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2905796A (en) * | 1952-03-04 | 1959-09-22 | Gen Electric | Circuit breaker for plug-in panelboard |
US2719203A (en) * | 1952-05-02 | 1955-09-27 | Westinghouse Electric Corp | Circuit breakers |
US2810048A (en) * | 1952-08-12 | 1957-10-15 | Fed Electric Prod Co | Duplex circuit breaker |
US2787682A (en) * | 1954-03-08 | 1957-04-02 | Zinsco Electrical Products | Circuit breaker |
US2716679A (en) * | 1954-05-11 | 1955-08-30 | Wadsworth Electric Mfg Co | Circuit breaker |
US2779831A (en) * | 1954-06-14 | 1957-01-29 | Gen Electric | Multipole electric circuit breakers |
US2776349A (en) * | 1954-10-20 | 1957-01-01 | Gen Electric | Magnetic thermal trip |
US2824934A (en) * | 1954-12-09 | 1958-02-25 | Westinghouse Electric Corp | Visible-blade arc-extinguishing disconnecting switch |
US2902560A (en) * | 1955-05-18 | 1959-09-01 | Square D Co | Circuit breaker |
US3165609A (en) * | 1955-08-04 | 1965-01-12 | Fed Pacific Electric Co | Temperature compensated circuit breakers |
US3178535A (en) * | 1957-04-12 | 1965-04-13 | Westinghouse Electric Corp | Automatic circuit breaker with improved bimetallic and electromagnetic trip device |
US2953650A (en) * | 1957-10-10 | 1960-09-20 | Gen Electric | Plug-in type electrical socket |
US2922004A (en) * | 1957-10-10 | 1960-01-19 | Gen Electric | Electric circuit breaker |
GB905639A (en) * | 1959-06-16 | 1962-09-12 | Crabtree & Co Ltd J A | Improvements in electric circuit breakers |
US3147353A (en) * | 1960-12-23 | 1964-09-01 | Ite Circuit Breaker Ltd | Contact weld breaking means |
US3201550A (en) * | 1964-04-03 | 1965-08-17 | Ite Circuit Breaker Ltd | Circuit breaker with vent opening |
US3287522A (en) * | 1965-06-28 | 1966-11-22 | Gen Electric | Circuit breaker with spring-biased toggle link |
FR2434472A2 (en) * | 1978-08-21 | 1980-03-21 | Legrand Sa | Circuit breaker with adjustable trip - has simple clamp trip bearing on latch member coupled to movable contact to enhance switching |
US4276457A (en) * | 1979-07-30 | 1981-06-30 | Gould Inc. | Circuit breaker having planar cradle with edge portions providing relatching and contact kicker functions |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2107246A (en) * | 1936-06-01 | 1938-02-01 | Square D Co | Circuit breaker |
US2184372A (en) * | 1937-01-27 | 1939-12-26 | Gen Electric | Circuit breaker |
US2320437A (en) * | 1941-05-07 | 1943-06-01 | Westinghouse Electric & Mfg Co | Circuit breaker |
US2363606A (en) * | 1942-03-23 | 1944-11-28 | Square D Co | Arc suppressor |
US2416164A (en) * | 1943-11-06 | 1947-02-18 | Westinghouse Electric Corp | Arc extinguishing structure |
US2490514A (en) * | 1944-09-25 | 1949-12-06 | Gen Electric | Thermal-magnetic circuit breaker |
-
1950
- 1950-08-16 US US179692A patent/US2627563A/en not_active Expired - Lifetime
-
1951
- 1951-07-25 FR FR1040106D patent/FR1040106A/en not_active Expired
- 1951-08-16 GB GB19361/51A patent/GB709947A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190013170A1 (en) * | 2017-07-05 | 2019-01-10 | Eaton Corporation | Electrical switching apparatus and adjustable trip assembly therefor |
US10636601B2 (en) * | 2017-07-05 | 2020-04-28 | Eaton Intelligent Power Limited | Electrical switching apparatus and adjustable trip assembly therefor |
Also Published As
Publication number | Publication date |
---|---|
FR1040106A (en) | 1953-10-13 |
US2627563A (en) | 1953-02-03 |
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