GB737604A - Automatic electric circuit breakers - Google Patents
Automatic electric circuit breakersInfo
- Publication number
- GB737604A GB737604A GB8868/53A GB886853A GB737604A GB 737604 A GB737604 A GB 737604A GB 8868/53 A GB8868/53 A GB 8868/53A GB 886853 A GB886853 A GB 886853A GB 737604 A GB737604 A GB 737604A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- strip
- handle
- circuit
- contacts
- 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
- 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
Landscapes
- Breakers (AREA)
Abstract
737,604. Automatic circuit-breakers; switches held set and freed mechanically. FEDERAL ELECTRIC PRODUCTS CO. March 31, 1953, No. 8868/53. Class 38 (5). A circuit-breaker comprises a uni-planar member 66 pivoted at 72 and having a contact 32 engageable with a fixed contact 30. An actuating lever 88 pivotally mounted on the member 66 is connected by a resilient link 108 to the operating handle 64, a latch extension 86 of the lever 88 normally abutting the end of a bimetal strip 84 fixed at its other end to the member 66 and connected by a conductor 126 to a plug-in terminal 24. The handle 64 forms with the link 108 an overset toggle, the lever 88 being normally held against clockwise movement by its engagement with the strip 84 whereby a compression spring 110 acting between the handle and the member 66 is normally unable to open the contacts 30, 32. On overload the strip 84 deflects due to the current therein and disengages the extension 86 permitting lever 88 to pivot and unlock the toggle 64, 108 and the spring 110 opens the contacts 30, 32 and also moves the handle to the " off " position. On cooling of the strip 84 the circuit-breaker may be reclosed by the handle 64. The contacts may also be manually operated " off " and " on " by the handle 64, in which instance the parts 84, 86 remain in engagement. To prevent current by-passing the strip 84 and flowing to the contact 32 through the lever 88 and member 66, the member 66 may have a high resistance part 68 and a low resistance part 70. Alternatively, the lever 88 may be of high resistance material. Also, the lever 88 may pivot on an insulating bush provided on the member 66 (Fig. 7, not shown). The strip 84 may also be deflected on overload by the attraction of a magnetic member 160 thereon towards a rigid armature 162 carried by the member 66. The insulating circuit-breaker casing 10 is in two parts having co-operating portions which define an arcing chamber 28 and is provided with a recess 18 and re-entrant portion 20 for mounting on a board as disclosed in Specification 737,603.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US127433A US2647186A (en) | 1949-11-15 | 1949-11-15 | Circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
GB737604A true GB737604A (en) | 1955-09-28 |
Family
ID=9860812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8868/53A Expired GB737604A (en) | 1949-11-15 | 1953-03-31 | Automatic electric circuit breakers |
Country Status (6)
Country | Link |
---|---|
US (1) | US2647186A (en) |
BE (1) | BE519698A (en) |
CH (1) | CH314465A (en) |
DE (1) | DE1023129B (en) |
FR (1) | FR1077726A (en) |
GB (1) | GB737604A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2758174A (en) * | 1950-09-14 | 1956-08-07 | Fed Electric Prod Co | Circuit breakers |
USRE24388E (en) * | 1951-04-17 | 1957-11-05 | Automatic circuit breakers | |
US2786113A (en) * | 1953-07-21 | 1957-03-19 | Fed Electric Prod Co | Calibration of circuit breaker mechanism within casing |
US2876308A (en) * | 1953-08-19 | 1959-03-03 | Fed Electric Prod Co | Circuit breakers |
DE1056713B (en) * | 1955-09-23 | 1959-05-06 | Siemens Ag | Circuit breaker with thermal release |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL17036C (en) * | 1924-08-18 | |||
US2008068A (en) * | 1930-05-15 | 1935-07-16 | Pass & Seymour Inc | Electric switch |
US2157787A (en) * | 1935-02-05 | 1939-05-09 | Automotive Devices Corp | Electromagnetic switch device |
US2209352A (en) * | 1938-04-15 | 1940-07-30 | Colt S Mfg Co | Automatic circuit breaker |
US2209319A (en) * | 1938-11-28 | 1940-07-30 | Colt S Mfg Co | Automatic circuit breaker |
DE740528C (en) * | 1941-11-07 | 1943-10-22 | Wilhelm Leyhausen | Contact carrier for small self switch |
US2363606A (en) * | 1942-03-23 | 1944-11-28 | Square D Co | Arc suppressor |
USRE23188E (en) * | 1945-05-24 | 1950-01-10 | Cikcuit | |
US2419072A (en) * | 1945-06-08 | 1947-04-15 | Gen Electric | Electric switch |
US2450268A (en) * | 1945-08-30 | 1948-09-28 | Gen Electric | Circuit breaker |
-
1949
- 1949-11-15 US US127433A patent/US2647186A/en not_active Expired - Lifetime
-
1953
- 1953-03-31 GB GB8868/53A patent/GB737604A/en not_active Expired
- 1953-04-20 DE DEF11624A patent/DE1023129B/en active Pending
- 1953-04-22 FR FR1077726D patent/FR1077726A/en not_active Expired
- 1953-04-23 CH CH314465D patent/CH314465A/en unknown
- 1953-05-05 BE BE519698D patent/BE519698A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1023129B (en) | 1958-01-23 |
FR1077726A (en) | 1954-11-10 |
US2647186A (en) | 1953-07-28 |
CH314465A (en) | 1956-06-15 |
BE519698A (en) | 1953-05-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB788044A (en) | Automatic electric circuit breaker | |
GB1214363A (en) | Circuit interrupter | |
GB965789A (en) | Electric circuit breakers | |
GB635516A (en) | Automatic electric circuit-breaker | |
GB778952A (en) | Automatic electric circuit breakers | |
GB1197705A (en) | Circuit Breaker with Improved Contact Structure. | |
GB737604A (en) | Automatic electric circuit breakers | |
US3254176A (en) | Circuit interrupter having nuisancetripping stop means | |
GB688649A (en) | Improvements in current-responsive automatic electric circuit-breakers | |
GB684868A (en) | Improvements in automatic electric circuit-breakers | |
GB1049889A (en) | Electrical circuit breaker | |
US3517355A (en) | Blow-open circuit breaker | |
US3171928A (en) | Electric circuit breaker with cam surfaces and wedging roller | |
GB927374A (en) | Automatic air circuit breaker | |
GB611686A (en) | Improvements in or relating to small automatic electric circuit breakers | |
US3214535A (en) | Electric circuit breaker with positive tripping means | |
GB1511881A (en) | Current limiting circuit breaker | |
US3158711A (en) | Current limiting circuit breaker | |
GB1058722A (en) | Multi-phase circuit breaker | |
GB817898A (en) | An electric circuit breaker | |
GB674520A (en) | Improvements in or relating to electric circuit breakers embodying overload trip devices | |
US3610856A (en) | Molded case circuit breaker having an auxiliary contact separating spring | |
US3581261A (en) | Molded case circuit breaker having an auxiliary contact separating spring | |
GB962819A (en) | A single-pole or multipole electrical power circuit-breaker | |
US2322285A (en) | Circuit breaker |