CN110459446A - It is a kind of can effectively arc extinguishing more Wiring type miniature circuit breakers - Google Patents
It is a kind of can effectively arc extinguishing more Wiring type miniature circuit breakers Download PDFInfo
- Publication number
- CN110459446A CN110459446A CN201910776513.4A CN201910776513A CN110459446A CN 110459446 A CN110459446 A CN 110459446A CN 201910776513 A CN201910776513 A CN 201910776513A CN 110459446 A CN110459446 A CN 110459446A
- Authority
- CN
- China
- Prior art keywords
- lower case
- conductor
- arc extinguishing
- circuit breakers
- miniature circuit
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 36
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Classifications
-
- 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
- H01H73/04—Contacts
-
- 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
- H01H73/06—Housings; Casings; Bases; Mountings
-
- 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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention relates to circuit switchgear technical fields, specifically, be related to it is a kind of can effective arc extinguishing more Wiring type miniature circuit breakers, including upper housing and lower case, the side of upper housing and lower case offers wiring hole, the two sides of upper housing and lower case are symmetrically arranged with two conducting wires, side inside lower case is provided with stationary contact, the bottom level of stationary contact is closely welded with the first conductor, one end of first conductor is arranged in horizontal direction after the bending of two sides right angle, and the outermost end of the first conductor is stretched out wiring hole and is electrically connected with a conducting wire.Design of the invention can be under quick coupling and turnbuckle any combination, not merely realize outlet simultaneously, also it can be realized a Hooke's universal joint on one side, same connector can all be used in turnbuckle or both sides on the right of left side quick coupling, to realize a variety of outlet methods, electric arc caused by disjunction can faster be imported in arc-chute, to effectively improve the arc extinguishing ability of product.
Description
Technical field
The present invention relates to circuit switchgear technical fields, specifically, be related to it is a kind of can effective arc extinguishing more Wiring types
Miniature circuit breaker.
Background technique
Breaker is a kind of electric component of cut-off circuit to interruptive current.One basic example of circuit interrupter
It exactly switchs, which is usually made of two electrical contacts under a state in open and close two states.Institute
The closure of meaning means that two contacts carry out contact and electric current can circulate between them, and disconnects and mean that two contacts separate.
Existing breaker connection mode is single, cannot carry out multiple conducting wire connections simultaneously, outlet direction is single, in addition, in breaker
It is easy to produce electric arc when disjunction, timely arc extinguishing can not be carried out in time.
Summary of the invention
The purpose of the present invention is to provide it is a kind of can effective arc extinguishing more Wiring type miniature circuit breakers, to solve above-mentioned background
Certain or the certain defects proposed in technology.
To achieve the above object, the present invention provides it is a kind of can effective arc extinguishing more Wiring type miniature circuit breakers, including it is upper
The side of shell and lower case, upper housing and lower case offers wiring hole, and the two sides of the upper housing and lower case are symmetrical
Two conducting wires are provided with, the side inside the lower case is provided with stationary contact, and the bottom level of the stationary contact closely welds
There is the first conductor, one end of first conductor is arranged in horizontal direction after the bending of two sides right angle, first conductor
Outermost end is stretched out wiring hole and is electrically connected with a conducting wire, and first conductor is closely welded with touching close to one end of stationary contact
Head, the stationary contact are the laminated structure that upper and lower ends are vertical and middle section is horizontal, are provided with above the horizontal segment of the stationary contact
Arc-chute, the lower case inside are provided with the second conductor far from the side of stationary contact, and the top of second conductor is vertical
Structure, the lower section of second conductor is after the bending of multiple right angle, outer wall side horizontal buckling of the lowermost end to lower case, institute
The bottom end for stating the second conductor passes through wiring hole and is electrically connected with conducting wire.
Preferably, be respectively arranged with horizontal case and vertical annulus on the outside of the wiring hole, the horizontal case and
Vertical annulus is closely connect with the outer wall of lower case.
Preferably, be provided with bend pipe on the outside of the horizontal case, it is provided with straight tube on the outside of the vertical annulus, one
Root conducting wire sequentially passes through straight tube and vertical annulus, and another conducting wire sequentially passes through bend pipe and horizontal case, and the bend pipe is both ends
Horizontal and middle section is in the tubular structure of 45 ° of settings of inclining, and the outer end of two conducting wires mutual level under the fixation of straight tube and bend pipe is set
It sets.
Preferably, one end of the vertical annulus is provided with conductive sheet, the top of the stationary contact passes through the first bolt
It being fixedly connected with the conductive sheet on right side, the top of second conductor is fixedly connected by the second bolt with the conductive sheet in left side,
One end of conducting wire and conductive sheet are electrically connected.
Preferably, the surface of the upper housing offers several rivet holes, the inside of the lower case is close to rivet hole
Place has closely bonded positioning and guiding pipe, the positioning and guiding pipe and rivet hole and has completed to install by closing-up.
Preferably, the interior side of the lower case is provided with switch, the inside of the lower case is additionally provided with tripping
Mechanism, the side of the switch are connected with armature contact.
Preferably, the other side inside the lower case is provided with tripping mechanism, the tripping mechanism and the second conductor
It is electrically connected.
Preferably, the upper housing and the inner wall of lower case have closely bonded insulating trip.
Preferably, the sheet metal that the arc-chute is several arc-shaped structures is spaced substantially equidistant, the arc-chute
Bottom and the inner wall of lower case closely connect, the arc-chute forms the groove-like structure being recessed inwardly, and can guarantee movable touching
At point activity to contact.
Compared with prior art, beneficial effects of the present invention:
1, this can effectively arc extinguishing more Wiring type miniature circuit breakers in, can either be realized by horizontal case and vertical annulus
The outlet simultaneously of multichannel conducting wire, also may be implemented a direction outlet on one side, it can on the right of the quick coupling of the left side turnbuckle or
Same connector is all used on person both sides, to realize a variety of outlet methods, and guarantees that mutual level will not generate interference.
2, this can effectively arc extinguishing more Wiring type miniature circuit breakers in, by straight tube and bend pipe can be realized horizontal direction and
Outlet while vertical direction guarantees that a variety of outlet methods are more convenient to use.
3, this can be effectively in more Wiring type miniature circuit breakers of arc extinguishing, can be by disjunction institute by the design of the structure of stationary contact
The electric arc of generation faster imports in arc-chute, to effectively improve the arc extinguishing ability of product.
Detailed description of the invention
Fig. 1 be embodiment 1 in can effectively arc extinguishing more Wiring type miniature circuit breakers schematic perspective view；
Fig. 2 be embodiment 1 in can effectively arc extinguishing more Wiring type miniature circuit breakers configuration schematic diagram；
In Fig. 3 embodiment 1 can effectively arc extinguishing more Wiring type miniature circuit breakers schematic diagram of internal structure.
In figure: 1, upper housing；11, rivet hole；2, lower case；21, positioning and guiding pipe；22, rivet；23, it switchs；24, it jumps
Brake mechanism；25, it moves contacts；26, arc-chute；27, stationary contact；271, the first conductor；272, contact；273, the first bolt；28,
Second conductor；281, the second bolt；29, insulating trip；3, wiring hole；4, straight tube；5, bend pipe；6, horizontal case；7, vertical annulus；
71, conductive sheet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, " several " are meant that two or more,
Unless otherwise specifically defined.
Embodiment 1
The present invention provide it is a kind of can effective arc extinguishing more Wiring type miniature circuit breakers, as shown in Figure 1-Figure 3, including upper housing
1 and lower case 2, the side of upper housing 1 and lower case 2 offers wiring hole 3, for facilitating conducting wire to pass through, upper housing 1 and lower casing
The two sides of body 2 are symmetrically arranged with two conducting wires, and the side inside lower case 2 is provided with stationary contact 27, the bottom of stationary contact 27
Horizontal close is welded with the first conductor 271, and one end of the first conductor 271 is arranged in horizontal direction after the bending of two sides right angle,
The outermost end of first conductor 271 is stretched out wiring hole 3 and is electrically connected with a conducting wire, and the electric current that conducting wire generates passes sequentially through first
Conductor 271 and stationary contact 27, the first conductor 271 are closely welded with contact 272 close to one end of stationary contact 27, and stationary contact 27 is upper
The horizontal segment top of the laminated structure that lower both ends are vertical and middle section is horizontal, stationary contact 27 is provided with arc-chute 26, for going out
Arc operation, the middle part of stationary contact 27 can facilitate electric arc more to quickly introduce in arc-chute, inside lower case 2 close to arc-chute 26
Side far from stationary contact 27 is provided with the second conductor 28, and the top of the second conductor 28 is vertical structure, under the second conductor 28
Section is after the bending of multiple right angle, and to the outer wall side horizontal buckling of lower case 2, the bottom end of the second conductor 28 passes through to be connect lowermost end
String holes 3 and with conducting wire be electrically connected, electric current from below conducting wire flow to after the second conductor 28 top conducting wire in.
Specifically, the outside of wiring hole 3 is respectively arranged with horizontal case 6 and vertical annulus 7, horizontal case 6 and vertical set
Pipe 7 is closely connect with the outer wall of lower case 2, can be horizontally and vertically solid by conducting wire by horizontal case 6 and vertical annulus 7
It is fixed, to guarantee different outlet directions.
In addition, the outside of horizontal case 6 is provided with bend pipe 5, the outside of vertical annulus 7 is provided with straight tube 4, a conducting wire according to
Secondary to pass through straight tube 4 and vertical annulus 7, another conducting wire sequentially passes through bend pipe 5 and horizontal case 6, bend pipe 5 be both ends horizontal and in
Section is in the tubular structure of 45 ° of settings of inclining, and the outer end of two conducting wires is horizontally disposed with mutually under the fixation of straight tube 4 and bend pipe 5, device
Two sides are connect with two conducting wires simultaneously, different connection types can be arranged in two conducting wires, to realize available for different connection modes, made
With more convenient.
Further, one end of vertical annulus 7 is provided with conductive sheet 71, and the top of stationary contact 27 passes through the first bolt 273
It is fixedly connected with the conductive sheet 71 on right side, the top of the second conductor 28 is fixed by the second bolt 281 and the conductive sheet 71 in left side
Connection, one end of conducting wire and conductive sheet 71 are electrically connected, and can facilitate conducting wire by crossing the first bolt 273 and the second bolt 281
Disassembly and installation.
Further, the surface of upper housing 1 offers several rivet holes 11, and the inside of lower case 2 is at rivet hole 11
It has closely bonded positioning and guiding pipe 21, positioning and guiding pipe 21 and rivet hole 11 and has completed to install by 22 riveted of rivet, riveting is solid
Determine upper-lower casing.
Further, the interior side of lower case 2 is provided with switch 23, and the inside of lower case 2 is additionally provided with tripping mechanism
24, the side of switch 23 is connected with armature contact 25, contacts and divides with contact 272 by the controllable armature contact 25 of switch 23
It opens, thus the open and close of the device in real time.
Further, the other side inside lower case 2 is provided with tripping mechanism 24,28 electricity of tripping mechanism 24 and the second conductor
Property connection, when circuit overloads, tripping mechanism 24 can the switch is automatically turned off 23 so that armature contact 25 is separated with contact 272, into
And breaker is disconnected.
Further, upper housing 1 and the inner wall of lower case 2 have closely bonded insulating trip 29, guarantee exhausted inside device
Edge avoids generating leaky.
Further, arc-chute 26 is that the sheet metal of several arc-shaped structures is spaced substantially equidistant, the bottom of arc-chute 26
Portion is closely connect with the inner wall of lower case 2, and arc-chute 26 forms the groove-like structure being recessed inwardly, and can guarantee that armature contact 25 is living
It moves to contact 272, arc-chute 26 can be by the arc-absorption of generation, to reach arc quenching effect.
The present embodiment can effectively arc extinguishing more Wiring type miniature circuit breakers when in use, electric current can pass through both ends conducting wire
Access flows freely in breaker, and the access of horizontal and vertical direction conducting wire is realized by the different structure design in both ends, and
It can access simultaneously mostly with conducting wire, in addition, outlet simultaneously is not merely realized under quick coupling and turnbuckle any combination,
A Hooke's universal joint on one side may be implemented, it can turnbuckle or both sides are all with similarly connecing on the right of the quick coupling of the left side
Head, to realize a variety of outlet methods, in the case where electric arc is generated when the device disconnects, electric arc can be by stationary contact 27
It is quickly introduced in arc-chute 26 at section, from the absorption for realizing electric arc, effectively realizes the disjunction arc extinguishing ability of product.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.
Claims (9)
1. one kind can effective arc extinguishing more Wiring type miniature circuit breakers, including upper housing (1) and lower case (2), it is characterised in that:
The side of upper housing (1) and lower case (2) offers wiring hole (3), and the two sides of the upper housing (1) and lower case (2) are right
Title is provided with two conducting wires, and the internal side of the lower case (2) is provided with stationary contact (27), the bottom of the stationary contact (27)
Horizontal close is welded with the first conductor (271), and one end of first conductor (271) is in level side after the bending of two sides right angle
To setting, the outermost end of first conductor (271) is stretched out wiring hole (3) and is electrically connected with a conducting wire, and described first leads
Body (271) is closely welded with contact (272) close to the one end of stationary contact (27), the stationary contact (27) be upper and lower ends it is vertical and
The horizontal segment top of the laminated structure of middle section level, the stationary contact (27) is provided with arc-chute (26), in the lower case (2)
Portion is provided with the second conductor (28) far from the side of stationary contact (27), and the top of second conductor (28) is vertical structure, institute
The lower section of the second conductor (28) is stated after the bending of multiple right angle, outer wall side horizontal buckling of the lowermost end to lower case (2), institute
The bottom end for stating the second conductor (28) passes through wiring hole (3) and is electrically connected with conducting wire.
2. it is according to claim 1 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the wiring hole
(3) be respectively arranged with horizontal case (6) and vertical annulus (7) on the outside of, the horizontal case (6) and vertical annulus (7) with
The outer wall of lower case (2) closely connects.
3. it is according to claim 2 can effective arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the horizontal set
It is provided with bend pipe (5), is provided with straight tube (4) on the outside of the vertical annulus (7), a conducting wire sequentially passes through on the outside of pipe (6)
Straight tube (4) and vertical annulus (7), another conducting wire sequentially pass through bend pipe (5) and horizontal case (6), and the bend pipe (5) is both ends
Horizontal and middle section is in the tubular structure of 45 ° of settings of inclining, and the outer end of two conducting wires is mutual under the fixation of straight tube (4) and bend pipe (5)
It is horizontally disposed.
4. it is according to claim 2 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the vertical set
One end of pipe (7) is provided with conductive sheet (71), and the top of the stationary contact (27) passes through the conduction of the first bolt (273) and right side
Piece (71) is fixedly connected, and the top of second conductor (28) is fixed by the conductive sheet (71) in the second bolt (281) and left side
Connection, one end and conductive sheet (71) of conducting wire are electrically connected.
5. it is according to claim 1 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the upper housing
(1) surface offers several rivet holes (11), and the inside of the lower case (2) has closely bonded at rivet hole (11)
Positioning and guiding pipe (21), (21 complete to install the positioning and guiding pipe with rivet hole (11) by rivet (22) riveted.
6. it is according to claim 1 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the lower case
(2) interior side is provided with switch (23), and the inside of the lower case (2) is additionally provided with tripping mechanism (24), the switch
(23) side is connected with armature contact (25).
7. it is according to claim 1 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the lower case
(2) the internal other side is provided with tripping mechanism (24), and the tripping mechanism (24) and the second conductor (28) are electrically connected.
8. it is according to claim 1 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the upper housing
(1) and the inner wall of lower case (2) has closely bonded insulating trip (29).
9. it is according to claim 1 can effectively arc extinguishing more Wiring type miniature circuit breakers, it is characterised in that: the arc-chute
(26) it is spaced substantially equidistant for the sheet metal of several arc-shaped structures, bottom and lower case (2) of the arc-chute (26)
Inner wall closely connects, and the arc-chute (26) forms the groove-like structure being recessed inwardly, and can guarantee to move contacts (25) activity extremely
At contact (272).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776513.4A CN110459446B (en) | 2019-08-22 | 2019-08-22 | Multi-wiring miniature circuit breaker capable of effectively extinguishing arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776513.4A CN110459446B (en) | 2019-08-22 | 2019-08-22 | Multi-wiring miniature circuit breaker capable of effectively extinguishing arc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110459446A true CN110459446A (en) | 2019-11-15 |
| CN110459446B CN110459446B (en) | 2024-08-06 |
Family
ID=68488376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910776513.4A Active CN110459446B (en) | 2019-08-22 | 2019-08-22 | Multi-wiring miniature circuit breaker capable of effectively extinguishing arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110459446B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000026230A (en) * | 1998-10-19 | 2000-05-15 | 이종수 | Arc refiring prevention structure of mold case circuit breaker |
| CN1387670A (en) * | 1999-10-29 | 2002-12-25 | 默勒有限公司 | Electric safety switch device |
| CN104143492A (en) * | 2014-07-31 | 2014-11-12 | 华通机电股份有限公司 | Small circuit breaker with wire holder assisting in arc extinguishment |
| CN205452094U (en) * | 2016-03-11 | 2016-08-10 | 天津市百利电气有限公司 | Low -voltage circuit breaker who has free arc extinguishing function that disappears |
| CN206639715U (en) * | 2017-03-01 | 2017-11-14 | 上海华联低压电器有限公司 | A kind of double electric power pull arcing device |
| CN109559946A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker |
| CN109616390A (en) * | 2018-12-28 | 2019-04-12 | 天津京人电器有限公司 | A kind of multipole switch |
| CN210378945U (en) * | 2019-08-22 | 2020-04-21 | 浙江中亿豪科技有限公司 | Multi-wiring type miniature circuit breaker capable of effectively extinguishing arc |
-
2019
- 2019-08-22 CN CN201910776513.4A patent/CN110459446B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000026230A (en) * | 1998-10-19 | 2000-05-15 | 이종수 | Arc refiring prevention structure of mold case circuit breaker |
| CN1387670A (en) * | 1999-10-29 | 2002-12-25 | 默勒有限公司 | Electric safety switch device |
| CN104143492A (en) * | 2014-07-31 | 2014-11-12 | 华通机电股份有限公司 | Small circuit breaker with wire holder assisting in arc extinguishment |
| CN205452094U (en) * | 2016-03-11 | 2016-08-10 | 天津市百利电气有限公司 | Low -voltage circuit breaker who has free arc extinguishing function that disappears |
| CN206639715U (en) * | 2017-03-01 | 2017-11-14 | 上海华联低压电器有限公司 | A kind of double electric power pull arcing device |
| CN109559946A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of breaker |
| CN109616390A (en) * | 2018-12-28 | 2019-04-12 | 天津京人电器有限公司 | A kind of multipole switch |
| CN210378945U (en) * | 2019-08-22 | 2020-04-21 | 浙江中亿豪科技有限公司 | Multi-wiring type miniature circuit breaker capable of effectively extinguishing arc |
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| Publication number | Publication date |
|---|---|
| CN110459446B (en) | 2024-08-06 |
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