GB905639A - Improvements in electric circuit breakers - Google Patents
Improvements in electric circuit breakersInfo
- Publication number
- GB905639A GB905639A GB20564/59A GB2056459A GB905639A GB 905639 A GB905639 A GB 905639A GB 20564/59 A GB20564/59 A GB 20564/59A GB 2056459 A GB2056459 A GB 2056459A GB 905639 A GB905639 A GB 905639A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- armature
- tripping
- circuit
- main 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
- H01H71/505—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
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
-
- 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
- H01H71/1054—Means for avoiding unauthorised release
-
- 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
- H01H71/1072—Release mechanisms which are reset by opening movement of contacts
-
- 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
- H01H71/24—Electromagnetic mechanisms
- H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
- H01H71/345—Electromagnetic mechanisms having two or more armatures controlled by a common winding having a delayed movable core and a movable armature
-
- 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
- H01H71/528—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a toggle or collapsible link between handle and contact arm, e.g. sear pin mechanism
-
- 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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
Landscapes
- Breakers (AREA)
Abstract
905,639. Automatic circuit-breakers. CRABTREE & CO. Ltd., J. A. May 25, 1960 [June 16, 1959; Feb. 3, 1960], Nos. 20564/59 and 3772/60. Class 38 (5). A " moulded case " circuit-breaker comprises a pair of substantially flat casing members in recesses between which are housed contacts 29, 30 and an overload-responsive electromagnetically-tripped mechanism adapted to be reset automatically after a tripping operation and including a main spring 35 acting on a contact arm 17 connected to one end of a toggle 27, 28, the other end of which is connected to an operating handle 3, and a trip lever 24 loaded by a spring 31 and having releasable latching engagement with a catch plate 20. The trip lever 24 is released to break the toggle by the impact or impacts of an armature 15 on the plate 20 so that the force necessary to cause tripping is dependent only on the strength of the spring 31 and not that of the main spring 35 which provides adequate contact pressure. The armature 15 extends through a rectangular opening 20a in the bent end of the catch plate 20 and has an aperture which passes freely over the shank of a rivet 14 to provide a floating location for the armature on an L-shaped magnet frame 13. Extending through the frame 13 is a sealed tube 4 containing a ferrous plunger 6 and a spring 7 operating in a liquid. Under small overload conditions tripping is delayed until the plunger 6 has been moved against the bias of the spring 7 towards a polepiece 18, but under short circuit conditions the armature 15 is attracted without delay. A short ferrous sleeve 12 may surround the righthand end of the tube 4 to assist in completing the magnetic circuit. The main spring 35 in addition to providing the force necessary to open the contacts when tripping occurs, also provides contact pressure as the pivot 32 of the contact arm 17 is movable in slots 32x formed in the casing members. The contact chamber may be provided with deion plates 41. Specifications 905,640, 905,641 and 905,642 are referred to.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20564/59A GB905639A (en) | 1959-06-16 | 1959-06-16 | Improvements in electric circuit breakers |
DEC21579A DE1141365B (en) | 1959-06-16 | 1960-06-01 | Electric circuit breaker |
US33827A US3105131A (en) | 1959-06-16 | 1960-06-03 | Electric circuit breakers |
FR830215A FR1259884A (en) | 1959-06-16 | 1960-06-16 | Electric switch |
CH431861A CH384686A (en) | 1959-06-16 | 1961-04-12 | Electrical circuit breaker |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20564/59A GB905639A (en) | 1959-06-16 | 1959-06-16 | Improvements in electric circuit breakers |
GB377260 | 1960-02-03 | ||
GB1172760 | 1960-04-02 | ||
GB1172759 | 1960-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB905639A true GB905639A (en) | 1962-09-12 |
Family
ID=27447326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20564/59A Expired GB905639A (en) | 1959-06-16 | 1959-06-16 | Improvements in electric circuit breakers |
Country Status (4)
Country | Link |
---|---|
US (1) | US3105131A (en) |
CH (1) | CH384686A (en) |
DE (1) | DE1141365B (en) |
GB (1) | GB905639A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0016788A4 (en) * | 1978-06-16 | 1980-10-09 | Square D Co | Electromagnetic contactor arc chute. |
FR2557354A1 (en) * | 1983-12-26 | 1985-06-28 | Merlin Gerin | MINIATURE CIRCUIT BREAKER WITH IMPROVED DIELECTRIC HOLD |
EP0807949A2 (en) * | 1996-05-14 | 1997-11-19 | Eaton Corporation | Trip bar with adjustable latch load for electrical switching apparatus |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3214535A (en) * | 1963-02-27 | 1965-10-26 | Cutler Hammer Inc | Electric circuit breaker with positive tripping means |
FR2496976B1 (en) * | 1980-12-19 | 1985-10-18 | Etude Realisa Disjoncteurs | DELAYED RESPONSE FAST ELECTROMAGNETIC TRIGGER FOR ELECTRICAL SWITCHING APPARATUS |
DE3705216A1 (en) * | 1987-02-19 | 1988-09-01 | Geyer Gmbh & Co Christian | Electrical line protection circuit breaker |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US993946A (en) * | 1908-08-17 | 1911-05-30 | Gen Electric | Cut-out for electrical circuits. |
US1289656A (en) * | 1909-10-06 | 1918-12-31 | Allis Chalmers Mfg Co | Time-element circuit-breaker. |
CH121430A (en) * | 1926-06-26 | 1927-08-01 | Gfeller Ag | Automatic electrical momentary and time switch. |
US2072932A (en) * | 1934-03-28 | 1937-03-09 | Heinemann Electric Co | Method of and apparatus for controlling electric circuits |
US2305347A (en) * | 1936-07-25 | 1942-12-15 | Square D Co | Circuit breaker |
DE760941C (en) * | 1937-08-27 | 1953-06-29 | Siemens Schuckertwerke A G | Overcurrent switch |
FR839053A (en) * | 1937-12-02 | 1939-03-23 | Alsthom Cgee | Method and devices for facilitating the modification of the operating conditions of electric circuit breakers and other apparatus which are to operate automatically when certain conditions occur |
US2429722A (en) * | 1940-07-13 | 1947-10-28 | Westinghouse Electric Corp | Circuit breaker |
FR896579A (en) * | 1943-02-23 | 1945-02-26 | Small circuit breaker | |
CH259582A (en) * | 1944-02-12 | 1949-01-31 | Huber & Cie Ag J | Electrical switchgear with overcurrent protection. |
CH245200A (en) * | 1945-07-27 | 1946-10-31 | Bbc Brown Boveri & Cie | Combined thermal and dynamic release. |
US2627563A (en) * | 1950-08-16 | 1953-02-03 | Gen Electric | Electric circuit breaker |
US2659783A (en) * | 1951-07-17 | 1953-11-17 | Gen Electric | Electric circuit breaker |
US2700711A (en) * | 1951-12-14 | 1955-01-25 | Heinemann Electric Co | Automatic circuit breaker |
US2824191A (en) * | 1953-02-05 | 1958-02-18 | Fed Electric Prod Co | Circuit breakers |
US2732455A (en) * | 1953-03-03 | 1956-01-24 | Overload releasing mechanism for automatic circuit breaker | |
GB756347A (en) * | 1953-06-04 | 1956-09-05 | Reyrolle A & Co Ltd | Improvements relating to stressed operating mechanisms, for example for operating electric circuit-breakers |
CH315719A (en) * | 1953-10-02 | 1956-08-31 | Bbc Brown Boveri & Cie | Device for protecting periodically moving electrical contact devices against interference from overcurrent or reverse current, in particular for contact converters |
US2821596A (en) * | 1954-06-21 | 1958-01-28 | Westinghouse Electric Corp | Trip device for circuit breakers |
DE1048325B (en) * | 1955-09-30 | |||
US2890306A (en) * | 1957-06-25 | 1959-06-09 | Murray Mfg Corp | Electromagnetic circuit breaker |
-
1959
- 1959-06-16 GB GB20564/59A patent/GB905639A/en not_active Expired
-
1960
- 1960-06-01 DE DEC21579A patent/DE1141365B/en active Pending
- 1960-06-03 US US33827A patent/US3105131A/en not_active Expired - Lifetime
-
1961
- 1961-04-12 CH CH431861A patent/CH384686A/en unknown
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0016788A4 (en) * | 1978-06-16 | 1980-10-09 | Square D Co | Electromagnetic contactor arc chute. |
EP0016788A1 (en) * | 1978-06-16 | 1980-10-15 | Square D Co | Electromagnetic contactor arc chute. |
FR2557354A1 (en) * | 1983-12-26 | 1985-06-28 | Merlin Gerin | MINIATURE CIRCUIT BREAKER WITH IMPROVED DIELECTRIC HOLD |
EP0148058A2 (en) * | 1983-12-26 | 1985-07-10 | Merlin Gerin | Miniature circuit breaker with improved dielectric characteristics |
EP0148058A3 (en) * | 1983-12-26 | 1985-08-14 | Merlin Gerin | Miniature circuit breaker with improved dielectric characteristics |
JPS60227332A (en) * | 1983-12-26 | 1985-11-12 | メルラン、ジエラン | Miniature breaker |
US4604507A (en) * | 1983-12-26 | 1986-08-05 | Merlin Gerin | Miniature circuit breaker with improved insulation level |
JPH0782798B2 (en) | 1983-12-26 | 1995-09-06 | メルラン、ジエラン | Micro circuit breaker |
EP0807949A2 (en) * | 1996-05-14 | 1997-11-19 | Eaton Corporation | Trip bar with adjustable latch load for electrical switching apparatus |
EP0807949A3 (en) * | 1996-05-14 | 1999-03-31 | Eaton Corporation | Trip bar with adjustable latch load for electrical switching apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE1141365B (en) | 1962-12-20 |
CH384686A (en) | 1964-11-30 |
US3105131A (en) | 1963-09-24 |
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