EP0053973A1 - Kleinselbstschalter mit hohem Schaltvermögen - Google Patents
Kleinselbstschalter mit hohem Schaltvermögen Download PDFInfo
- Publication number
- EP0053973A1 EP0053973A1 EP81401899A EP81401899A EP0053973A1 EP 0053973 A1 EP0053973 A1 EP 0053973A1 EP 81401899 A EP81401899 A EP 81401899A EP 81401899 A EP81401899 A EP 81401899A EP 0053973 A1 EP0053973 A1 EP 0053973A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- housing
- contacts
- chambers
- contact
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/04—Co-operating contacts of different material
-
- 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
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
-
- 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
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/025—Composite material having copper as the basic material
-
- 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
- H01H71/121—Protection of release mechanisms
-
- 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
Definitions
- Miniature circuit breakers are frequently used for the protection of terminal electrical distribution circuits, and the increase in installed power has created the need for circuit breakers with high breaking capacity.
- An increase in breaking capacity can be obtained by connecting two circuit breakers in series unipolar, but the size and cost is thus doubled. It has already been proposed to house inside a same housing a contact system ensuring a double break and allowing an increase in the breaking capacity (French patent No. 2,154,628).
- Miniature circuit breakers belong to modular systems of electrical devices all having the same profile to be placed side by side on a support in a manner well known to specialists. The structure and arrangement of the components of the aforementioned known miniature circuit breaker do not allow compliance with the standardized dimensions of the modules, and the present invention aims to allow the realization of a miniature circuit breaker with reduced overall dimensions and high breaking capacity.
- the circuit breaker according to the invention is characterized in that said two cut-off camber with associated contacts occupy substantially the entire width and length of said lower housing part, the su- part - Stainlesseure receiving mechanism and the coil of the magnetic trip device common to the two cut-off intervals and each occupying the entire width of the housing, the coil being interposed between the cut-off chambers and the mechanism extending parallel to said sheets, and that said contact support fork connecting the movable contacts to the mechanism extends at the front and in a substantially perpendicular direction of said coil.
- the miniature circuit breaker according to the invention retains the general structure of the circuit breaker commercially known as C 32 and described in French patent No. 2,344,949, only the width of the housing being increased and increased to 25 mm, so as to have space sufficient for the side-by-side accommodation of the two breaking chambers and the magnetic release coil of increased section.
- the auxiliaries, in particular the differential protection unit, the remote opening control of the C 32 circuit breaker and / or its auxiliary contacts can thus be associated without any modification to the circuit breaker according to the invention, to carry out the differential protection and / or remote opening control and signaling.
- the two breaking chambers are separated by an insulating partition avoiding any untimely initiation and in the insulating partition is inserted a metal plate forming a screen extending to form a fixing lug for the bimetallic strip.
- the dual function of the metal plate, in this case screen and support of the bimetal strip, makes it possible to free the latter of any deformation of the housing subjected to overheating and stresses and to avoid any adjustment of the triggering threshold .
- the metal plate for separating the breaking chambers is arranged to constitute a shunt conductor for the magnetic trip device and the thermal trip device as soon as the arc drawn between the separated contacts is formed.
- the metal plate is extended on the side of the contacts and is - shaped as an arc horn on which the arc switches as soon as it forms in a manner well known per se.
- the magnetic trip unit acts by means of a striker directly on the contact fork to accelerate the movement of the latter in the opening direction, it is known to surround the coil of the trip device by a magnetic flux closing carcass.
- the metal carcass does not necessarily extend over all the faces of the coil, and according to a development of the invention, the face adjacent to the breaking chambers is open, so as to reduce the overall height.
- the opposite face is advantageously also open for the same reason.
- a housing 10 made of molded insulating material, consists of two half-shells 12, 14, assembled by rivets.
- the housing 10 has a generally parallelepiped shape of small width, in particular of 25 mm.
- the housing 10 has a base 16 for fixing on a mounting rail and a front face 18, pre - sensing a portion of light of a manual control switch 20.
- a base 16 for fixing on a mounting rail and a front face 18, pre - sensing a portion of light of a manual control switch 20.
- On the narrow side faces 22, 24 of the housing 10 are disposed the terminals 26, 28 input and output of the circuit breaker, housed inside the housing (fig. 5).
- the lower part of the housing 10 adjacent to the bottom 16 is subdivided into two parts by an insulating partition 30 extending in the median plane of the housing 10.
- an insulating partition 30 extending in the median plane of the housing 10.
- a metal plate 32 is inserted inside the insulating partition 30 in two adjoining parts.
- breaking chambers 34, 36 On either side of the insulating partition 30 are symmetrically arranged breaking chambers 34, 36, constituted by a stack of deionization sheets 38 extending parallel to the bottom 16.
- the insulating partition 30 extends from both sides other of the breaking chambers 3 4 , 3.6 to separate on the one hand two arc forming chambers 40, 42, located in front of the interrupting chambers 34, 36 and on the other hand of the interrupting gas exhaust conduits 44.
- Electrodes 56, 58 extend the fixed contacts 46, 48 for connection to the end plates of the interrupting chambers 34, 36.
- the electrode 58 is connected directly to the fixed contact 48 without any continuity solution while the electrode 56 is separated from the fixed contact 46 by an insulating gap 60.
- the electrode 56 is electrically connected to the plate 32 by means of a folded tab 62 of the latter.
- the magnetic trigger 64 comprises a coil 68 with an axis parallel to the sheets 38, the coil 68 being surrounded by a metal carcass 70 having two large lateral faces 72, 74, attached to the shells 12, 14 and fixed to the latter by tenons 76 fitted into slots 78.
- the carcass 70 does not extend on the lower faces and higher of the coil 68, respectively opposite the chambers 34, 36 and of the mechanism 66, so as to reduce the overall dimensions in height of the magnetic trip device 64.
- a plunger core 80 mounted to slide axially in the coil 68, carries a extractor 82 acting on the contact-carrying fork 54 and actuating a pusher 84 acting on a trigger bar 86 of the mechanism 66.
- the trigger bar 86 can also be actuated by a thermal trigger, constituted by a bimetallic strip 88.
- the control mechanism 66 is of the type described in the aforementioned French patent No. 2,344,949, which will advantageously be referred to for further details. Only the dimensions of the constituent parts of the mechanism 66 have been increased to resist the increased operating force by the presence of a double cut.
- the contact-carrying fork 54 is articulated on a cradle 90 mounted for rotation on a fixed axis 92 and controlled by a connecting rod 94 articulated by its end opposite to the lever 20.
- a hook 96 mounted for rotation on a fixed axis 98, cooperates by one of its ends with the trigger bar 86 and by its opposite end. with the contact-carrying fork 54 to constitute a hooking.
- the mechanism 66 naturally includes return and contact pressure springs (not shown), the assembly being arranged in such a way that a pivoting of the lever 20 causes the cradle 90 to tilt and move to the open position. or closing contacts 46, 50; 48, 52, of the contact-carrying fork 54.
- An actuation of the trigger bar 86 by the magnetic trip device 64 or the bimetallic strip 88 releases the hook 96 and unlocks the contact-carrying fork 54, which moves in the direction opening under the action of a return spring (not shown).
- the control mechanism and its operation are well known to specialists.
- the bimetallic strip 88 is fixed by means of a support 100 to a lug 102, constituted by an extension of the plate 32 inserted in the central insulating partition 30.
- the intermediate piece 100 of elongated shape is fixed by one of its ends, for example by crimping, on the tab 102, while the opposite end cooperates with an adjusting screw 104 screwed into an orifice formed in an extension 106 of the tab 102. It is easy to understand that the screwing or the unscrewing the adjusting screw 104 causes a deformation of the intermediate piece 100, and therefore a displacement of the free end of the bimetallic strip 88 in approach or spacing of the trigger lever 86 in a manner well known to specialists. It should be noted that the fixing the bimetallic strip 88 and its adjustment device 104 is independent of the housing 10, the assembly being carried by the metal plate 32.
- the terminal 26 is connected to the fixed contact 48, the fork 54 constituting a contact bridge cooperating respectively with the fixed contacts 48, 46.
- the fixed contact 46 is connected to the input of the coil 68, the output of the latter being connected by a braid 108 to the free end of the bimetallic strip 88.
- the plate 32 is connected to the terminal 28.
- the housing 10 can be made of thermoplastic material, a possible deformation of the housing 10 does not modify the adjustment of the bimetallic strip 88. It is clear that the use of the screen plate 32 as support for the bimetallic strip 88 can be used independently of the shunt function of magnetic and thermal trip devices, this function being either omitted or carried out by different means.
- the screen plate can be made of a ferromagnetic material.
- the movable contacts 50, 52 are advantageously made of a tellurium copper alloy and cooperate with fixed contacts 46, 48 made of copper. Tests have confirmed the effectiveness of this solution which saves the usual platelets in silver.
Landscapes
- Breakers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8026166 | 1980-12-09 | ||
FR8026166A FR2495826A1 (fr) | 1980-12-09 | 1980-12-09 | Disjoncteur miniature a haut pouvoir de coupure |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0053973A1 true EP0053973A1 (de) | 1982-06-16 |
EP0053973B1 EP0053973B1 (de) | 1985-08-21 |
Family
ID=9248881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19810401899 Expired EP0053973B1 (de) | 1980-12-09 | 1981-12-01 | Kleinselbstschalter mit hohem Schaltvermögen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0053973B1 (de) |
DE (1) | DE3171946D1 (de) |
ES (1) | ES8300415A1 (de) |
FR (1) | FR2495826A1 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2517465A1 (fr) * | 1981-11-27 | 1983-06-03 | Merlin Gerin | Disjoncteur miniature a deux chambres de coupure accolees |
FR2592738A1 (fr) * | 1986-01-03 | 1987-07-10 | Merlin Gerin | Disjoncteur electrique miniature a contact mobile multiple |
EP0418754A2 (de) * | 1989-09-18 | 1991-03-27 | Mitsubishi Denki Kabushiki Kaisha | Strombegrenzungsapparat |
FR2674986A1 (fr) * | 1991-04-08 | 1992-10-09 | Hager Electro | Disjoncteur unipolaire modulaire perfectionne et son procede de montage. |
EP0619592A1 (de) * | 1993-04-07 | 1994-10-12 | Schneider Electric Sa | Elektrischer Schutzschalter mit elektrodynamischer Kontaktabstossung und mit Doppellöschkammern |
EP0649155A1 (de) * | 1993-10-15 | 1995-04-19 | Hager Electro S.A. | Doppelte Lichtbogenlaufschiene für die Lichtbogenleitkammer eines Schutzschalters |
FR2768856A1 (fr) * | 1997-09-24 | 1999-03-26 | Schneider Electric Sa | Disjoncteur a declencheur electromagnetique a propulseur d'un contact mobile a fourche |
EP1178509A2 (de) * | 2000-07-21 | 2002-02-06 | GEWISS S.p.A. | Thermomagnetischer Schutzschalter |
EP2618354A1 (de) * | 2012-01-23 | 2013-07-24 | General Electric Company | Lichtbogenkammeranordnung und Herstellungsverfahren dafür |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2996678B1 (fr) | 2012-10-05 | 2014-10-31 | Schneider Electric Ind Sas | Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1180453B (de) * | 1962-08-07 | 1964-10-29 | Continental Elektro Ind Ag | Selbstschalter, insbesondere Installations-selbstschalter |
US3388358A (en) * | 1964-04-11 | 1968-06-11 | Bassani Spa | Circuit breaker |
DE1538677A1 (de) * | 1966-07-08 | 1970-02-19 | Licentia Gmbh | Mechanismus fuer Selbstschalter |
FR2154628A1 (de) * | 1971-09-30 | 1973-05-11 | Maier & Cie C | |
DE2234423A1 (de) * | 1972-07-13 | 1974-01-24 | Bbc Brown Boveri & Cie | Installationsselbstschalter in schalenbauweise |
FR2204872A1 (de) * | 1972-10-30 | 1974-05-24 | Legrand Sa | |
FR2344949A1 (fr) * | 1976-03-15 | 1977-10-14 | Merlin Gerin | Disjoncteur miniature basse tension |
-
1980
- 1980-12-09 FR FR8026166A patent/FR2495826A1/fr active Granted
-
1981
- 1981-12-01 EP EP19810401899 patent/EP0053973B1/de not_active Expired
- 1981-12-01 DE DE8181401899T patent/DE3171946D1/de not_active Expired
- 1981-12-04 ES ES507719A patent/ES8300415A1/es not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1180453B (de) * | 1962-08-07 | 1964-10-29 | Continental Elektro Ind Ag | Selbstschalter, insbesondere Installations-selbstschalter |
US3388358A (en) * | 1964-04-11 | 1968-06-11 | Bassani Spa | Circuit breaker |
DE1538677A1 (de) * | 1966-07-08 | 1970-02-19 | Licentia Gmbh | Mechanismus fuer Selbstschalter |
FR2154628A1 (de) * | 1971-09-30 | 1973-05-11 | Maier & Cie C | |
DE2234423A1 (de) * | 1972-07-13 | 1974-01-24 | Bbc Brown Boveri & Cie | Installationsselbstschalter in schalenbauweise |
FR2204872A1 (de) * | 1972-10-30 | 1974-05-24 | Legrand Sa | |
FR2344949A1 (fr) * | 1976-03-15 | 1977-10-14 | Merlin Gerin | Disjoncteur miniature basse tension |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2517465A1 (fr) * | 1981-11-27 | 1983-06-03 | Merlin Gerin | Disjoncteur miniature a deux chambres de coupure accolees |
EP0080924A1 (de) * | 1981-11-27 | 1983-06-08 | Merlin Gerin | Kleinstschutzschalter mit zwei nebeneinander angeordneten Löschkammern |
FR2592738A1 (fr) * | 1986-01-03 | 1987-07-10 | Merlin Gerin | Disjoncteur electrique miniature a contact mobile multiple |
EP0232637A1 (de) * | 1986-01-03 | 1987-08-19 | Merlin Gerin | Elektrischer Kleinschalter mit Mehrfachkontakt |
EP0418754A2 (de) * | 1989-09-18 | 1991-03-27 | Mitsubishi Denki Kabushiki Kaisha | Strombegrenzungsapparat |
EP0418754A3 (en) * | 1989-09-18 | 1992-03-25 | Mitsubishi Denki Kabushiki Kaisha | Current limiting apparatus |
FR2674986A1 (fr) * | 1991-04-08 | 1992-10-09 | Hager Electro | Disjoncteur unipolaire modulaire perfectionne et son procede de montage. |
EP0508846A1 (de) * | 1991-04-08 | 1992-10-14 | Hager Electro S.A. | Verbesserter enkelpoliger modularer Schalter und dessen Aufbau |
EP0619592A1 (de) * | 1993-04-07 | 1994-10-12 | Schneider Electric Sa | Elektrischer Schutzschalter mit elektrodynamischer Kontaktabstossung und mit Doppellöschkammern |
FR2703821A1 (fr) * | 1993-04-07 | 1994-10-14 | Merlin Gerin | Disjoncteur électrique à répulsion électrodynamique des contacts et à chambres de coupure double. |
EP0649155A1 (de) * | 1993-10-15 | 1995-04-19 | Hager Electro S.A. | Doppelte Lichtbogenlaufschiene für die Lichtbogenleitkammer eines Schutzschalters |
FR2768856A1 (fr) * | 1997-09-24 | 1999-03-26 | Schneider Electric Sa | Disjoncteur a declencheur electromagnetique a propulseur d'un contact mobile a fourche |
EP0905735A1 (de) * | 1997-09-24 | 1999-03-31 | Schneider Electric Sa | Schutzschalter mit elektromagnetischen Auslöser mit Antrieb für einen beweglichen und gabelförmigen Kontakt |
EP1178509A2 (de) * | 2000-07-21 | 2002-02-06 | GEWISS S.p.A. | Thermomagnetischer Schutzschalter |
EP1178509A3 (de) * | 2000-07-21 | 2002-02-27 | GEWISS S.p.A. | Thermomagnetischer Schutzschalter |
EP2618354A1 (de) * | 2012-01-23 | 2013-07-24 | General Electric Company | Lichtbogenkammeranordnung und Herstellungsverfahren dafür |
US8912461B2 (en) | 2012-01-23 | 2014-12-16 | General Electric Company | Arc chute assembly and method of manufacturing same |
Also Published As
Publication number | Publication date |
---|---|
DE3171946D1 (en) | 1985-09-26 |
FR2495826B1 (de) | 1984-02-03 |
ES507719A0 (es) | 1982-11-01 |
ES8300415A1 (es) | 1982-11-01 |
FR2495826A1 (fr) | 1982-06-11 |
EP0053973B1 (de) | 1985-08-21 |
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