GB778952A - Automatic electric circuit breakers - Google Patents
Automatic electric circuit breakersInfo
- Publication number
- GB778952A GB778952A GB34706/54A GB3470654A GB778952A GB 778952 A GB778952 A GB 778952A GB 34706/54 A GB34706/54 A GB 34706/54A GB 3470654 A GB3470654 A GB 3470654A GB 778952 A GB778952 A GB 778952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- handle
- arm
- bimetal
- dec
- spring
- 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
- H01H71/10—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
- H01H71/529—Manual reset mechanisms which may be also used for manual release actuated by lever comprising an electroresponsive element forming part of the transmission chain between handle and contact arm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
-
- 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
- H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
Landscapes
- Breakers (AREA)
Abstract
778,952. Automatic circuit-breakers; snapaction switches. FEDERAL PACIFIC ELECTRIC CO. Nov. 30, 1954 [Dec. 11, 1953; Dec. 11, 1953; Dec. 11, 1953; Dec. 11, 1953], No. 34706/54. Class 38(5) In order to prevent arcing and welding of the contacts 20, 22 on closing of a manually-operated circuit-breaker, the movement of the contact 20 is temporarily obstructed during the turning of the handle 28, the obstruction being removed shortly before the handle completes its closing stroke so that the contacts snap closed independently of movement of the handle. The obstruction is formed by a member 56 located by a tongue 63 and supported on a movable contact-carrying member 18 pivoted on a helical spring 48, a compression spring 42 being positioned between handle 28 and member 56. As handle 28 is turned from contact open position (Fig. 1) it first drives link 30 to pivot lever 26 into engagement with an overload bimetal 32 and then causes member 18, lever 26, and the bimetal to move as a whole about pivot 48 in the closing direction. The spring 42 presses arm 60 of member 56 so that it travels along a cam surface 68 in the casing until its end engages shoulder 70 thus arresting movement of contact 20. At about dead-centre position of toggle 28, 30 pivot 48 has been slightly shifted and deformed and portion 76 of arm 18 engages the end of a slot in member 56, arm 75 on handle 28 then pushes arm 62 to remove arm 60 from shoulder 70 so allowing contact 20 to snap closed under influence of spring 48. On manual opening of the breaker, arm 77 on handle 28 engages arm 62 of member 56 to aid spring 42 in driving the contacts apart. The bimetal 32 is connected to terminal 34 and carries the breaker current, the downward flexing of the bimetal in case of overload being aided by magnetization of armature 38 by the bimetal current. Specifications 737,604 and 739,620 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US397662A US2811605A (en) | 1953-12-11 | 1953-12-11 | Circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB778952A true GB778952A (en) | 1957-07-17 |
Family
ID=23572125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34706/54A Expired GB778952A (en) | 1953-12-11 | 1954-11-30 | Automatic electric circuit breakers |
Country Status (6)
Country | Link |
---|---|
US (1) | US2811605A (en) |
DE (1) | DE1096471B (en) |
ES (1) | ES218930A1 (en) |
FR (1) | FR1124012A (en) |
GB (1) | GB778952A (en) |
NL (1) | NL193015A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2564562A (en) * | 2017-06-08 | 2019-01-16 | Dalian Ino Tech Co Ltd | A high breaking capacity miniature circuit breaker |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2923788A (en) * | 1957-07-03 | 1960-02-02 | Fed Pacific Electric Co | Circuit breakers |
US2923795A (en) * | 1957-07-03 | 1960-02-02 | Fed Pacific Electric Co | Multi-pole circuit breakers |
US2901575A (en) * | 1957-08-16 | 1959-08-25 | Texas Instruments Inc | Electrical switch |
US2975253A (en) * | 1958-07-21 | 1961-03-14 | Ite Circuit Breaker Ltd | Contact arm kicker for circuit breakers |
NL273896A (en) * | 1961-01-24 | |||
DE1129223B (en) * | 1961-02-09 | 1962-05-10 | Continental Elektro Ind Ag | Switch lock for electrical switches, especially circuit breakers |
DE1140271B (en) * | 1961-03-24 | 1962-11-29 | Licentia Gmbh | Mechanism for installation self-switch |
US3183325A (en) * | 1961-05-03 | 1965-05-11 | Fed Pacific Electric Co | Trip indicating circuit breakers |
DE1178500B (en) * | 1962-03-09 | 1964-09-24 | Stotz Kontakt Gmbh | Switching mechanism with momentary activation for installation switch |
US3500275A (en) * | 1968-03-11 | 1970-03-10 | Federal Pacific Electric Co | Automatic circuit breakers |
US3610856A (en) * | 1970-08-25 | 1971-10-05 | Federal Pacific Electric Co | Molded case circuit breaker having an auxiliary contact separating spring |
US3784940A (en) * | 1972-09-15 | 1974-01-08 | Federal Pacific Electric Co | Circuit breaker with overcurrent and auxiliary releases |
DE4446411A1 (en) * | 1994-12-23 | 1996-06-27 | Kopp Heinrich Ag | Device for accelerating the switch-on process between electrical contacts |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA468174A (en) * | 1950-09-19 | Canadian Westinghouse Company | Electric circuit interrupters | |
DE593512C (en) * | 1934-02-27 | Siemens Schuckertwerke Akt Ges | Installation circuit breaker with instant activation | |
US2070305A (en) * | 1934-01-03 | 1937-02-09 | Westinghouse Electric & Mfg Co | Circuit interrupter |
US2013827A (en) * | 1934-02-23 | 1935-09-10 | Westinghouse Electric & Mfg Co | Circuit interrupter |
US2158369A (en) * | 1935-03-25 | 1939-05-16 | Square D Co | Electric switch |
US2126412A (en) * | 1937-01-12 | 1938-08-09 | Trumbull Electric Mfg Co | Circuit breaker |
US2214695A (en) * | 1938-03-19 | 1940-09-10 | Westinghouse Electric & Mfg Co | Circuit breaker |
US2320355A (en) * | 1940-01-19 | 1943-06-01 | Bulldog Electric Prod Co | Circuit breaker |
US2310854A (en) * | 1941-07-10 | 1943-02-09 | Westinghouse Electric & Mfg Co | Circuit breaker |
US2306235A (en) * | 1941-08-06 | 1942-12-22 | Gen Electric | Circuit breaker |
US2332496A (en) * | 1942-01-28 | 1943-10-26 | Westinghouse Electric & Mfg Co | Circuit breaker |
US2426880A (en) * | 1942-03-23 | 1947-09-02 | Square D Co | Circuit breaker |
US2343264A (en) * | 1942-11-06 | 1944-03-07 | Bulldog Electric Prod Co | Switch |
US2357151A (en) * | 1943-04-10 | 1944-08-29 | Gen Electric | Circuit breaker |
US2416266A (en) * | 1944-11-29 | 1947-02-18 | Wadsworth Electric Mfg Co Inc | Circuit breaker |
US2666114A (en) * | 1951-03-24 | 1954-01-12 | Square D Co | Circuit breaker |
US2697765A (en) * | 1951-05-18 | 1954-12-21 | John L Little | Power interrupter for electrical appliances |
US2660643A (en) * | 1951-10-16 | 1953-11-24 | Westinghouse Electric Corp | Circuit breaker |
US2652465A (en) * | 1951-12-22 | 1953-09-15 | Square D Co | Circuit breaker |
US2681396A (en) * | 1952-05-01 | 1954-06-15 | Fed Electric Prod Co | Circuit breaker with spring biased pivot for movable contact members |
US2692926A (en) * | 1952-09-06 | 1954-10-26 | Fed Electric Prod Co | Multipole circuit breaker |
US2681397A (en) * | 1953-01-02 | 1954-06-15 | Bulldog Electric Products Co | Circuit breaker |
US2700713A (en) * | 1953-07-10 | 1955-01-25 | Fed Electric Prod Co | Automatic circuit breaker |
-
0
- NL NL193015D patent/NL193015A/xx unknown
-
1953
- 1953-12-11 US US397662A patent/US2811605A/en not_active Expired - Lifetime
-
1954
- 1954-11-30 GB GB34706/54A patent/GB778952A/en not_active Expired
- 1954-12-04 DE DEF16310A patent/DE1096471B/en active Pending
- 1954-12-09 FR FR1124012D patent/FR1124012A/en not_active Expired
- 1954-12-10 ES ES0218930A patent/ES218930A1/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2564562A (en) * | 2017-06-08 | 2019-01-16 | Dalian Ino Tech Co Ltd | A high breaking capacity miniature circuit breaker |
GB2564562B (en) * | 2017-06-08 | 2022-01-12 | Dalian Ino Tech Co Ltd | A high breaking capacity miniature circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
FR1124012A (en) | 1956-10-02 |
NL193015A (en) | |
ES218930A1 (en) | 1955-03-16 |
US2811605A (en) | 1957-10-29 |
DE1096471B (en) | 1961-01-05 |
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