CN112366123A - Bipolar circuit breaker and distribution box with same - Google Patents
Bipolar circuit breaker and distribution box with same Download PDFInfo
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- CN112366123A CN112366123A CN202011372872.2A CN202011372872A CN112366123A CN 112366123 A CN112366123 A CN 112366123A CN 202011372872 A CN202011372872 A CN 202011372872A CN 112366123 A CN112366123 A CN 112366123A
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- 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
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- 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
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Abstract
本发明涉及一种双极断路器和具有该双极断路器的配电箱，双极断路器包括外壳体、第一极导电线路和第二极导电线路，通过第一极导电线路和第二极导电线路在外壳体内横向弯折且相互交叉，最终平行出线，使得断路器整体体积小、接线方便、布线简洁，相间绝缘性好，具有完整的断路、灭弧功能。
The invention relates to a double-pole circuit breaker and a distribution box having the double-pole circuit breaker. The double-pole circuit breaker comprises an outer casing, a first-pole conductive line and a second-pole conductive line, and the first-pole conductive line and the second-pole conductive line pass through the first-pole conductive line and the second-pole conductive line. The extremely conductive lines are bent laterally and cross each other in the outer casing, and finally run out in parallel, making the circuit breaker overall small in size, convenient in wiring, simple in wiring, good in phase-to-phase insulation, and has complete circuit breaking and arc extinguishing functions.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to an improvement of a wiring structure of a conductive circuit of a bipolar circuit breaker.
Background
The existing circuit breaker used in the inlet end of the distribution box is generally a dipolar circuit breaker, one pole is connected to an A-phase power line, the other pole is connected to a B-phase power line, the circuit breaker generally adopts an upper inlet wire-lower outlet wire or a lower inlet wire-upper outlet wire wiring mode, and a contact system is vertically arranged between the inlet end and the outlet end, so that the size of the circuit breaker is very large, and the problem that the circuit breaker cannot be installed frequently is caused due to the small internal space of the distribution box.
Disclosure of Invention
Therefore, in view of the above problems, the present invention proposes a bipolar circuit breaker with an improved structure.
The invention is realized by adopting the following technical scheme:
the invention provides a bipolar circuit breaker, which comprises a shell, a first pole conductive circuit and a second pole conductive circuit, wherein the first pole conductive circuit is arranged in the shell in an extending way and is provided with a first wire inlet end and a first wire outlet end, the second pole conductive circuit is arranged in the shell in an extending way and is provided with a second wire inlet end and a second wire outlet end, the first pole conductive circuit and the second pole conductive circuit are respectively provided with a first contact system and a second contact system, the first pole conductive circuit and the second pole conductive circuit are mutually crossed, the first wire outlet end and the second wire outlet end are respectively exposed out of a first side edge of the shell through a first wire outlet terminal seat and a second wire outlet terminal seat at intervals in a side-by-side way, the extending direction of the first wire outlet terminal seat and the second wire outlet terminal seat is defined as a longitudinal direction, and the first contact system and the second contact system are arranged in the shell in a parallel and transverse way, and is substantially in the span between the first and second outlet ends.
In order to facilitate wiring of the incoming and outgoing line terminals and operation of the operating mechanism, in one embodiment, the first contact system and the second contact system respectively have a first breaking motion track and a second breaking motion track, and the extending directions of the first outgoing line terminal base and the second outgoing line terminal base are perpendicular to a motion plane where the first breaking motion track and the second breaking motion track are located.
Wherein, for making the wiring of the external connection of circuit breaker more succinct, in an embodiment, first inlet wire end and second inlet wire end expose side by side through first inlet wire terminal seat and second inlet wire terminal seat outside the interval the second side of shell body respectively, the second side be in with the opposite side that first side was carried on the back mutually.
In order to facilitate the connection of the incoming and outgoing line terminals, in one embodiment, the connection line of the first incoming line terminal block and the second outgoing line terminal block is parallel to the connection line of the second incoming line terminal block and the first outgoing line terminal block.
In one embodiment, the first outgoing line terminal block and the second outgoing line terminal block are located at the lower side of the outer shell in the longitudinal direction, the first outgoing line terminal block is located at the right side of the second outgoing line terminal block in the transverse direction, the first pole conductive trace is arranged to extend from the first incoming line end to the first outgoing line end in an inverted Z-shaped bending manner, and the second pole conductive trace is arranged to extend from the second incoming line end to the second outgoing line end in a Z-shaped bending manner, wherein the first pole conductive trace extends from the first incoming line end to the second outgoing line end in an inverted Z-shaped bending manner, and the second pole conductive trace extends from the first outgoing line end to the second outgoing line end in an inverted Z-shaped bending manner.
Wherein, based on manufacturing and cost considerations, in one embodiment, the first wire inlet end comprises a first wire inlet terminal block and a first copper conductive bar, the first pole conductive bar further comprises a first hard connection and a first soft connection, the first incoming line terminal seat, the first conductive copper bar, the first hard connection, the first soft connection, the first contact system and the first outgoing line end are connected in sequence, the first incoming line terminal seat, the first conductive copper bar and the first outgoing line end are vertically and longitudinally arranged, the first contact system and the first flexible connection are transversely arranged from left to right, the first hard connection is a bent sheet body, the first conductive copper bars in the vertical direction and the first flexible connectors in the horizontal direction are connected through the bending structures, so that the first pole conductive circuit is approximately arranged in an inverted Z-shaped bending extension from the first wire inlet end to the first wire outlet end in a downward-rightward-downward manner;
the second wire inlet end comprises a second wire inlet terminal seat and a second conductive copper bar, the second wire inlet terminal seat, the second conductive copper bar, a second contact system, a second soft connection, a second hard connection and a second wire outlet end are sequentially connected, the second wire inlet terminal seat, the second conductive copper bar and the second wire outlet end are vertically arranged from top to bottom, the second contact system and the second soft connection are transversely arranged from left to right, the second hard connection is a bent sheet body, the second soft connection is transversely arranged from left to right and the second wire outlet end is longitudinally arranged from top to bottom, and therefore the second wire inlet end to the second wire outlet end are approximately arranged in a Z-shaped bent extending mode from downward to left to downward.
Wherein, in order to ensure that the circuit breaker has complete breaking and arc extinguishing functions, in one embodiment, the bipolar circuit breaker further comprises a first overcurrent release and a second overcurrent release which are respectively arranged on the first hard connection and the second hard connection.
In order to ensure that the circuit breaker has complete breaking and arc extinguishing functions, in one embodiment, the bipolar circuit breaker further comprises a first arc extinguishing chamber and a second arc extinguishing chamber which respectively cover the first breaking motion track and the second breaking motion track.
In one embodiment, the first outgoing line terminal block is located on the right side of the second outgoing line terminal block in the transverse direction, and the first incoming line end and the second incoming line end are respectively disposed on the left side and the right side of the outer shell.
In one embodiment, the first terminal block and the second terminal block are located at the lower side of the longitudinal direction of the outer housing, the first pole conductive trace is arranged to extend from the first wire inlet end to the first wire outlet end in an inverted L shape approximately in a "right-down" manner, and the second pole conductive trace is arranged to extend from the second wire inlet end to the second wire outlet end in an L shape approximately in a "left-down" manner.
In one embodiment, the first pole conductive circuit includes a first wire inlet end, a first contact system, a first flexible connection, a first hard connection and a first wire outlet end which are connected in sequence, wherein the first wire inlet end, the first contact system and the first flexible connection are arranged transversely left and right, the first wire outlet end is arranged longitudinally up and down, the first hard connection is a bent sheet body, and the transverse first flexible connection and the longitudinal first wire outlet end are connected through a bent structure of the bent sheet body, so that the first pole conductive circuit is arranged in an inverted L-shaped bent extending manner from the first wire inlet end to the first wire outlet end approximately from right to down;
the second pole conductive circuit comprises a second wire inlet end, a second hard connection, a second soft connection, a second contact system and a second wire outlet end which are connected in sequence, wherein the second wire inlet end, the second hard connection, the second soft connection and the second contact system are transversely arranged left and right, and the second wire outlet end is longitudinally arranged approximately, so that the second pole conductive circuit is arranged from the second wire inlet end to the second wire outlet end in an L-shaped bending and extending mode of left-down.
The bipolar circuit breaker further comprises an operating mechanism, wherein the operating mechanism is transversely arranged on the first contact system or the second contact system and used for controlling the opening and closing of the first contact system or the second contact system, and the first contact system and the second contact system are synchronously connected in a linkage manner.
Based on the bipolar circuit breaker, the invention further provides the distribution box, and the incoming line end of the distribution box is provided with the bipolar circuit breaker.
The invention has the following beneficial effects: the bipolar circuit breaker provided by the invention has the advantages that through transverse bending, mutual intersection and parallel wire outgoing between the first pole conducting circuit and the second pole conducting circuit, the whole volume of the circuit breaker is small, the wiring is convenient, the wiring is simple, the interphase insulation is good, and the circuit breaker has complete circuit breaking and arc extinguishing functions.
Drawings
Fig. 1 is a schematic perspective view of a bipolar circuit breaker in embodiment 1;
fig. 2 is a schematic perspective view of the bipolar circuit breaker of embodiment 1 (with the upper cover removed);
fig. 3 is an exploded view of the structure of the bipolar circuit breaker in embodiment 1;
fig. 4 is a schematic view of a first pole conductive trace and a second pole conductive trace in embodiment 1;
fig. 5 is an exploded view of the first pole conductive trace and the second pole conductive trace in embodiment 1;
fig. 6 is a schematic diagram of the current flow direction of the bipolar circuit breaker in embodiment 1 (including a-phase electricity and B-phase electricity);
fig. 7 is a schematic diagram of an operating environment in which the bipolar circuit breaker of embodiment 1 is applied in a distribution box;
fig. 8 is a schematic perspective view of the bipolar circuit breaker of embodiment 2;
fig. 9 is a schematic perspective view of the bipolar circuit breaker of embodiment 2 (with the upper cover removed);
fig. 10 is an exploded view of the bipolar circuit breaker of embodiment 2;
fig. 11 is a schematic view of a first pole conductive trace and a second pole conductive trace in embodiment 2;
fig. 12 is an exploded view of the first pole conductive trace and the second pole conductive trace in embodiment 2;
fig. 13 is a schematic diagram of the current flow direction of the bipolar circuit breaker in embodiment 2 (including a-phase electricity and B-phase electricity);
fig. 14 is a schematic diagram of an operating environment in which the bipolar circuit breaker of embodiment 2 is applied to a distribution box.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will now be further described with reference to the accompanying drawings and detailed description.
Example 1:
as a preferred embodiment of the present invention, there is provided a bipolar circuit breaker applied to a line inlet terminal of a distribution box, two poles of which are respectively connected to a-phase electricity and a B-phase electricity, as shown in fig. 1 to 3, the circuit breaker including an outer case 300, the outer case 300 including a base 31, a side wall 32 and an upper cover 33 which can be coupled to each other as a single body, and a handle of a circuit breaker operating mechanism 9 exposed from the outer case 300 to perform manual turn-off and turn-on. Referring to fig. 4-6, the circuit breaker further includes a first pole conductive trace and a second pole conductive trace, the first pole conductive trace (connected to phase a) includes a first wire inlet end (the first wire inlet end includes a first wire inlet terminal base 11 and a first conductive copper bar 12 fixedly and electrically connected together), a first hard connection 13, a first soft connection 14, a first contact system 15 and a first wire outlet end 16, which are connected in sequence. The second pole conductive trace (phase B) includes a second wire inlet end (the second wire inlet end includes a second wire inlet terminal base 21 and a second conductive copper bar 22 fixedly and electrically connected together), a second contact system 23, a second soft connection 24, a second hard connection 25 and a second wire outlet end 26, which are connected in sequence. Wherein: the first outlet terminal 16 includes a first outlet terminal base 162 extending in a sheet shape, and a first connecting portion 161 for electrically connecting with the first contact system 15, and the second outlet terminal 26 includes a second outlet terminal base 262 extending in a sheet shape, and a second connecting portion 261 for electrically connecting with the second hard connection 25, as shown in fig. 6, the first inlet terminal base 11, the second inlet terminal base 21, the first outlet terminal base 162, and the second outlet terminal base 262 are all exposed out of the outer shell 300, so as to facilitate wiring. The first connecting portion 161 has a first fixed contact 152 to contact and cooperate with the first movable contact 151 to form the first contact system 15; the second fixed contact 232 is disposed on the second conductive copper bar 22 to contact and cooperate with the second movable contact 231 to form the second contact system 23.
For convenience of description, in fig. 6:
the first outlet terminal block 162 and the second outlet terminal block 262 are located at the lower side of the longitudinal direction of the outer housing 300 (the side wall 32), and then the outer housing 300 (the side wall 32) is located at the upper side of the longitudinal direction of the first outlet terminal block 162 and the second outlet terminal block 262; the lower side of the outer case 300 is a first side, and the upper side of the outer case 300 is a second side;
the first outgoing line terminal block 162 is located at the right side of the second outgoing line terminal block 262 in the transverse direction, and the second outgoing line terminal block 262 is located at the left side of the first outgoing line terminal block 162 in the transverse direction.
In the first pole conductive circuit, a first incoming terminal seat 11, a first conductive copper bar 12 and a first outgoing line end 16 are vertically and longitudinally arranged, a first contact system 15 and a first soft connection 14 are horizontally arranged from left to right, a first hard connection 13 is a bent sheet body, the first conductive copper bar 12 longitudinally arranged from top to bottom and the first soft connection 14 horizontally arranged from left to right are connected through a bending structure of the first hard connection, and the wiring of the first pole conductive circuit from the incoming line to the outgoing line is in an inverted Z shape from downward-rightward-downward; in the second pole conductive circuit, the second incoming terminal base 21, the second conductive copper bar 22 and the second outgoing line end 26 are vertically and longitudinally arranged, the second contact system 23 and the second flexible connector 24 are horizontally arranged from left to right, the second hard connector 25 is a bent sheet body, the second flexible connector 24 horizontally arranged from left to right and the second outgoing line end 26 vertically arranged from top to bottom are connected through a bent structure, and the overall routing of the second pole conductive circuit from the incoming line to the outgoing line is in a Z shape from downward-leftward-downward.
Meanwhile, the first pole conductive circuit and the second pole conductive circuit are mutually crossed, specifically, in this embodiment, the first pole conductive circuit and the second pole conductive circuit are crossed by bending and mutually yielding between the first hard connection 13 and the second hard connection 25, the first pole conductive circuit and the second pole conductive circuit are transversely bent first, then are mutually crossed, and finally are respectively led out through the first outlet terminal 16 and the second outlet terminal 26, so that the first contact system 15 and the second contact system 23 are transversely arranged in the outer housing 300 in parallel and are approximately in a span range between the first outlet terminal 16 and the second outlet terminal 26, and thus the contact system and the operating mechanism 9 are transversely arranged by using a width space between the first inlet terminal base 11 and the second inlet terminal base 21, and the overall volume of the circuit breaker is reduced. It should be noted that, the "span range between the first outlet terminal 16 and the second outlet terminal 26" referred to in the description should be understood as a span between connection points (i.e., the first connection portion 161 and the second connection portion 261) where the first outlet terminal 16 and the second outlet terminal 26 are respectively connected to the first contact system 15 and the second contact system 23, and the first outlet terminal 16 and the second outlet terminal 26 may be bent or extended to expose the first outlet terminal base 162 and the second outlet terminal base 262 out of the outer shell 300 by a suitable distance or length, so as to adapt to an operating environment of the distribution box.
In this embodiment, the first pole conductive traces and the second pole conductive traces are respectively in an extended layout manner of an inverted Z shape and a Z shape, and the straight and straight directions thereof can facilitate installation, and meanwhile, the first pole conductive traces and the second pole conductive traces can be matched with the approximately rectangular shape of the outer housing 300 to make the most of the internal space of the outer housing 300. In addition, in the present embodiment, the first hard connection 13, the first soft connection 14, the second soft connection 24 and the second hard connection 25 are used as conductive connection structures to cooperatively form the first pole conductive circuit and the second pole conductive circuit in the inverted Z-shape and the Z-shape, but in other embodiments, the routing layout between the middle contact system and the inlet and outlet terminals may be satisfied without depending on the specific form of the conductive connection structure.
The first movable contact 151 has a first breaking motion track relative to the first fixed contact 152, the second movable contact 231 has a second breaking motion track relative to the second fixed contact 232 to achieve the connection and disconnection of the first pole conductive circuit and the second pole conductive circuit, the operating mechanism 9 is transversely installed on the first contact system 15 or the second contact system 23 and is used for operating the first movable contact 151 or the second movable contact 231 to move, and the first movable contact 151 and the second movable contact 231 are synchronously linked and connected. The extending directions of the first outgoing line terminal block 162 and the second outgoing line terminal block 262 are perpendicular to the movement plane where the first breaking movement locus and the second breaking movement locus are located, so that the operating mechanism 9 can swing laterally for convenient operation.
In this embodiment, the first incoming line terminal block 11 and the second incoming line terminal block 21 are disposed on the upper side (the second side) of the outer casing 300, and the first outgoing line terminal block 162 and the second outgoing line terminal block 262 are disposed on the lower side (the first side) of the outer casing 300, that is, the incoming line end of the circuit breaker is disposed on the upper side and the outgoing line end is disposed on the lower side, so that the wiring of the external line of the circuit breaker is more concise due to the layout manner of the single-side incoming line and the single-side outgoing line, and more preferably, the connection line of the first incoming line terminal block 11 and the second outgoing line terminal block 262 is substantially parallel to the connection line of the second incoming line terminal block 21 and the first outgoing line terminal block 162.
The circuit breaker further comprises an arc extinguishing chamber 7 and an overcurrent release 8 for arc extinguishing and short circuit protection respectively, as shown in fig. 2-3, the two arc extinguishing chambers 7 respectively cover a first breaking motion track and a second breaking motion track, arc extinguishing processing is performed on electric arcs which may be generated, the exhaust direction of the arc extinguishing chamber 7 points to the right side of the outer shell 300, the two overcurrent releases 8 are respectively installed on the first hard connection 13 and the second hard connection 25, and rapid tripping and circuit breaking are performed by matching with the operating mechanism 9 through thermal deformation or magnetic field change generated by an overload circuit and short circuit current. Because the arc extinguish chamber 7 is arranged transversely and the wire inlet and outlet ends are arranged longitudinally, even if short circuit occurs, the ejection direction of the electric arc in the arc extinguish chamber 7 is transverse, and the wire inlet and outlet ends cannot be ablated.
This embodiment is through transversely buckling first utmost point conducting wire and second utmost point conducting wire, the overall arrangement mode of cross arrangement, make full use of the width space between first inlet wire terminal seat 11 and the second inlet wire terminal seat 21 in order to arrange contact system and operating device 9, the volume of circuit breaker has effectively been reduced, the wiring of the inlet wire terminal, the outlet wire terminal of circuit breaker is also very convenient and succinct, fig. 7 shows the schematic diagram of bipolar circuit breaker application in the block terminal, because bipolar circuit breaker is crossed after the upper end inlet wire in the middle of the circuit breaker respectively and is superimposed the parallel line of back edge lower extreme, make the outlet wire end conveniently be connected with other miniature circuit breakers in the block terminal. Meanwhile, on the basis of volume reduction, the bipolar circuit breaker has enough space for placing the arc extinguish chamber 7 and the over-current release 8, so that the circuit breaker is ensured to have complete circuit breaking and arc extinguishing functions, and the safety performance of a circuit is guaranteed.
Example 2:
this embodiment provides another bipolar circuit breaker, also used in a distribution box, which is substantially similar in structure to the bipolar circuit breaker of embodiment 1, but differs in the arrangement of the line terminals. Specifically, referring to fig. 8-13, the bipolar circuit breaker includes an outer housing 300 ', and a first conductive trace and a second conductive trace mounted in the outer housing 300', wherein the first conductive trace includes a first wire inlet terminal (the first wire inlet terminal includes a first wire inlet terminal base 11 'and a first conductive copper bar 12'), a first contact system 15 ', a first flexible connection 14', a first hard connection 13 ', and a first wire outlet terminal 16' (the first wire outlet terminal 16 'includes a first wire outlet terminal base 161' extending longitudinally in a sheet shape), wherein the first wire inlet terminal, the first contact system 15 ', and the first flexible connection 14' are transversely arranged from left to right, the first wire outlet terminal 16 'is longitudinally arranged from top to bottom, the first hard connection 13' is a bent sheet body, and the first flexible connection 14 'and the first wire outlet terminal 16' are transversely connected by a bent structure thereof; the second conductive circuit comprises a second wire inlet end (the second wire inlet end comprises a second wire inlet terminal seat 21 ' and a second conductive copper bar 22 '), a second hard connection 25 ', a second soft connection 24 ', a second contact system 23 ' and a second wire outlet end 26 ' (comprising a second wire outlet terminal seat 261 ' which longitudinally extends and is sheet-shaped), wherein the second wire inlet end, the second hard connection 25 ', the second soft connection 24 ' and the second contact system 23 ' are transversely arranged from left to right, and the second wire outlet end 26 ' is substantially longitudinally arranged. Similar to embodiment 1, in this embodiment, the first pole conductive trace and the second pole conductive trace are bent laterally, and then cross each other, and finally are respectively led out through the first outlet terminal 16 ' and the second outlet terminal 26 ', so that the first contact system 15 ' and the second contact system 23 ' are parallelly and laterally arranged in the outer housing 300 ' and are approximately in the span range between the first outlet terminal 16 ' and the second outlet terminal 26 ', and thus the contact system and the operating mechanism 9 are laterally arranged by using the width space between the first inlet terminal base 11 ' and the second inlet terminal base 21 ', and the overall volume of the circuit breaker is reduced. Meanwhile, the extending directions of the first outgoing line terminal seat 162 ' and the second outgoing line terminal seat 262 ' are perpendicular to the moving plane where the breaking moving tracks of the first contact system 15 ' and the second contact system 23 ' are located, so that the operating mechanism 9 ' can swing transversely to facilitate the operation.
The main difference between this embodiment and embodiment 1 is: in the present embodiment, the first wire inlet end and the second wire inlet end are disposed on the left and right sides of the outer housing 300 ', so that the first conductive trace is disposed to extend in an inverted L shape from the first wire inlet end to the first wire outlet end 16 ' approximately in a "right-down" direction, and the second conductive trace is disposed to extend in an L shape from the second wire inlet end to the second wire outlet end 26 ' in a "left-down" direction. The inverted L-shaped and L-shaped extending arrangement mode is convenient to install, and can be matched with the approximately rectangular shape of the outer shell 300 ', the internal space of the outer shell 300' is fully utilized, and meanwhile, the arrangement mode enables the bipolar circuit breaker to be in volume, although the transverse volume is increased, the longitudinal volume is further reduced, and the interval between the outgoing line terminals is larger, so that the interphase insulation effect of the bipolar circuit breaker is improved. Moreover, it should be noted that although the first wire inlet end and the second wire inlet end are disposed at the left and right sides of the outer casing 300, the first wire inlet terminal block 11 'and the second wire inlet terminal block 21' can still be extended up and down through the bending shape, so that the wire inlet and outlet ends maintain the layout of the upper wire inlet and the lower wire outlet in parallel (as shown in fig. 13-14), and the external wires of the bipolar circuit breaker are more concise.
The present embodiment is provided with the same components as the embodiment 1, such as the overcurrent release 7 ', the arc-extinguishing chamber 8 ', and the operating mechanism 9 ', and has the technical effects of the same components as the embodiment 1. It should be noted that, since the first incoming line end is disposed at the left side of the outer housing 300 ' in the air injection direction of the arc-extinguishing chamber 8 ', an arc-isolating piece 10 is further disposed between the arc-extinguishing chamber 8 ' and the first incoming line end in this embodiment to prevent the arc from overflowing to ablate the terminals.
Fig. 14 shows a scenario in which the bipolar circuit breaker of the present embodiment is applied in a distribution box. The bipolar circuit breaker is respectively led in from the left side and the right side of the outer shell 300' and then is crossed and overlapped in the middle of the circuit breaker and then is led out in parallel along the lower end, so that the outlet end can be conveniently connected with other miniature circuit breakers in the distribution box.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372872.2A CN112366123B (en) | 2020-11-30 | 2020-11-30 | A double-pole circuit breaker and a distribution box having the double-pole circuit breaker |
| US17/537,359 US11728112B2 (en) | 2020-11-30 | 2021-11-29 | Double-pole circuit breaker and distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372872.2A CN112366123B (en) | 2020-11-30 | 2020-11-30 | A double-pole circuit breaker and a distribution box having the double-pole circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112366123A true CN112366123A (en) | 2021-02-12 |
| CN112366123B CN112366123B (en) | 2024-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011372872.2A Active CN112366123B (en) | 2020-11-30 | 2020-11-30 | A double-pole circuit breaker and a distribution box having the double-pole circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN112366123B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958205A (en) * | 2009-12-09 | 2011-01-26 | 上海诺雅克电气有限公司 | Selective protection circuit breaker |
| US20140175062A1 (en) * | 2012-12-20 | 2014-06-26 | Eaton Electrical Ip Gmbh & Co. Kg | Electrical switching device |
| CN105719918A (en) * | 2016-04-15 | 2016-06-29 | 常熟开关制造有限公司(原常熟开关厂） | Multibreak molded case circuit breaker |
| CN105914109A (en) * | 2016-07-06 | 2016-08-31 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN213691927U (en) * | 2020-11-30 | 2021-07-13 | 厦门宏发开关设备有限公司 | A double-pole circuit breaker and distribution box with the double-pole circuit breaker |
-
2020
- 2020-11-30 CN CN202011372872.2A patent/CN112366123B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958205A (en) * | 2009-12-09 | 2011-01-26 | 上海诺雅克电气有限公司 | Selective protection circuit breaker |
| US20140175062A1 (en) * | 2012-12-20 | 2014-06-26 | Eaton Electrical Ip Gmbh & Co. Kg | Electrical switching device |
| CN105719918A (en) * | 2016-04-15 | 2016-06-29 | 常熟开关制造有限公司(原常熟开关厂） | Multibreak molded case circuit breaker |
| CN105914109A (en) * | 2016-07-06 | 2016-08-31 | 上海电科电器科技有限公司 | Conductive loop of circuit breaker |
| CN213691927U (en) * | 2020-11-30 | 2021-07-13 | 厦门宏发开关设备有限公司 | A double-pole circuit breaker and distribution box with the double-pole circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN112366123B (en) | 2024-11-12 |
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