CN109509688A - A kind of protection against electric shock termination and the breaker using the device - Google Patents
A kind of protection against electric shock termination and the breaker using the device Download PDFInfo
- Publication number
- CN109509688A CN109509688A CN201811420369.2A CN201811420369A CN109509688A CN 109509688 A CN109509688 A CN 109509688A CN 201811420369 A CN201811420369 A CN 201811420369A CN 109509688 A CN109509688 A CN 109509688A
- Authority
- CN
- China
- Prior art keywords
- screw
- electric shock
- protection against
- accommodating cavity
- bolt seat
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011810 insulating material Substances 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 150000002739 metals Chemical class 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 3
- 206010014357 Electric shock Diseases 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 239000003086 colorant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- H01H71/08—Terminals; Connections
-
- 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
- H01H71/06—Distinguishing marks, e.g. colour coding
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
A kind of protection against electric shock termination and the breaker using the device, the protection against electric shock termination include insulating body and tie down screw, which has an accommodating cavity, and the opposite two side walls of the accommodating cavity offer string holes respectively, roof offers pilot hole；Tie down screw is installed in the pilot hole, and an end stretches in the accommodating cavity, and a plurality of conducting wire for entering the accommodating cavity from the string holes is fixed together and electrical communication；The tie down screw is made of screw head and screw bolt seat, and the material of the screw head is metal, and the material of the screw bolt seat is insulating materials.The input terminal and outlet terminal of the breaker use above-mentioned protection against electric shock termination.In use, the electric current on conducting wire will not be conducted to the leakage part of tie down screw, thus even if inadvertently contacting the leakage part of tie down screw, it will not get an electric shock, therefore this termination is using safe, and its pilot hole can do shallower, also be not required to install protective cover plate additional.
Description
Technical field
The present invention relates to termination, especially a kind of protection against electric shock termination, and the open circuit using the termination
Device.
Background technique
The small distribution case of indoor power supply is usually embedded in wall, by master switch (breaker) and at least one switch-dividing
(breaker) composition, external power supply enter each switch-dividing by master switch, are then dispensed for different electrical appliances, as illumination is set
Standby, air-conditioning, refrigerator etc..Have connecting terminal on each switch, the tie down screw of connecting terminal due to connected conducting wire phase
Contact, therefore high-voltage electricity is had, once contact human body, it will threat to life.
It gets an electric shock in order to avoid the tie down screw on contact connecting terminal, there are two types of currently used methods: one is will
The pilot hole of receiving tie down screw is done relatively deep, makes finger be not easy to touch screw rod, another kind is to install protection additional at connecting terminal
Cover board.But deeper pilot hole and protective cover plate will affect the beauty of product, and if accidentally protrude into wire etc., still
There is Danger Electric shock risk, it is therefore necessary to design a kind of protection against electric shock termination.
Summary of the invention
The object of the present invention is to provide a kind of protection against electric shock terminations, to solve drawbacks described above of the existing technology.
In order to achieve the above object, The technical solution adopted by the invention is as follows:
A kind of protection against electric shock termination comprising:
Insulating body 1, has an accommodating cavity 11, and the opposite two side walls of the accommodating cavity offer string holes respectively
12, the roof of the accommodating cavity offers pilot hole 13；And
Tie down screw 2 is installed in the pilot hole, and an end stretches in the accommodating cavity, will be from the line
The a plurality of conducting wire that hole enters the accommodating cavity is fixed together and electrical communication；The tie down screw 2 is by screw head 21 and screw rod
Seat 22 forms, and the material of the screw head 21 is metal, and the material of the screw bolt seat 22 is insulating materials.
In some embodiments, the end of the screw head 21 is provided with interconnecting piece 211, and the screw bolt seat 22 is plastic spiral
Pole socket, the periphery clinkering that the front end of screw bolt seat is wrapped in the interconnecting piece are fixed.Preferably, the interconnecting piece is cylindrical, T word
Shape is I-shaped.Preferably, vertical concave and convex stripe 212 is distributed in the side wall of the interconnecting piece 211, the interconnecting piece 211
Radial concave and convex stripe 212 is distributed in the rear end face of end face, and/or the screw head.
Preferably, the screw bolt seat 22 is provided with the colour code for identifying circuit types, and the colour code is arranged in entire institute
State the rear end face of screw bolt seat or the screw bolt seat.
In one embodiment, the side wall of the screw bolt seat 22 is provided with screw thread, and the screw bolt seat and the pilot hole are logical
Cross described be threadedly engaged, to drive the tie down screw to enter or exit the accommodating cavity.
There are also in some kinds of embodiments, screw thread is arranged in the side wall of the screw head 21, is provided with gold in the accommodating cavity 11
Belong to connector 5, threaded hole is provided on the metal connecting piece 5, the screw thread and the threaded hole of screw head side wall cooperate.
Wherein, in a kind of embodiment, the metal connecting piece 5 includes top plate and bottom plate and four side plates, on the top plate and the side plate
The upper correspondence string holes 12 and the pilot hole 13 are provided with via hole 51 and threaded hole 52.Also in a kind of embodiment, the gold
Category connector 5 is two sheet metals, and two sheet metals are in rectangle, and sheet metal is provided centrally with via hole,
Another sheet metal is provided centrally with the threaded hole, and conducting wire is clamped between two sheet metals.
The present invention also provides a kind of breaker, which includes shell 6, and the end of incoming cables at shell both ends is arranged in
Son 61 and outlet terminal 62, the input terminal and the outlet terminal are the dress of protection against electric shock wiring described in above-mentioned any one
It sets, the shell constitutes the insulating body.
Compared with prior art, the present invention at least has the advantages that
Electric current on its conducting wire will not be conducted to the leakage part of tie down screw, thus even if inadvertently contacting locking screw
The leakage part of bar, will not get an electric shock, therefore this termination is using safe, and its pilot hole can do it is shallower, also not
Protective cover plate need to be installed additional.
Due to the screw bolt seat using nonmetallic materials such as plastics, screw bolt seat is made into different colors with can be convenient, with
This constitutes colour code, circuit types can be easily distinguished by color, such as use the spiral shell of red screw bolt seat in firewire junction
Bar uses the screw rod of green screw bolt seat in ground wire junction in zero curve junction using the screw rod of blue screw bolt seat, so as to
Avoid mis-wired.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of protection against electric shock termination first embodiment；
Fig. 2 is the structural schematic diagram of protection against electric shock termination second embodiment；
Fig. 3 is the structural schematic diagram of protection against electric shock termination 3rd embodiment；
Fig. 4 is one embodiment schematic diagram of the interconnecting piece of screw head；
Fig. 5 is the structural schematic diagram of the rear end face of screw head；
Fig. 6 is the schematic diagram of the second embodiment of the interconnecting piece of screw head；
Fig. 7 is the schematic diagram of the 3rd embodiment of the interconnecting piece of screw head；
Fig. 8 is a kind of structural schematic diagram of switch-dividing.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is please referred to, the protection against electric shock termination of first embodiment includes: insulating body 1 and tie down screw 2.
Insulating body 1 has an accommodating cavity 11, and the opposite two side walls of the accommodating cavity 11 offer string holes respectively
12, the roof of the accommodating cavity 11 offers pilot hole 13.
Tie down screw 2 is installed in the pilot hole 13, and an end stretches in the accommodating cavity 11, will be from the line
The conducting wire 3 that hole 12 enters a plurality of sheet of the accommodating cavity 11 is fixed together simultaneously electrical communication.
It is of particular importance that tie down screw 2 is made of screw head 21 and screw bolt seat 22, the material of the screw head 21 is gold
Belong to, the material of the screw bolt seat 22 is insulating materials.Intensity that the screw head 21 of metal material has had, excellent wear resistance
Energy and electric conductivity, it is ensured that conducting wire is reliably connected, and the screw bolt seat 22 of insulating materials can prevent the electric current on conducting wire 3
Conduction to the leakage part of tie down screw 2, even if thus inadvertently contact the leakage part of tie down screw 2, will not get an electric shock.
Moreover, pigment can be added in processing in nonmetallic materials in the slurry, the product of different colours is made, therefore can be convenient ground
Screw bolt seat 22 is made into different colors, colour code is constituted with this, circuit types can be easily distinguished by color, such as in fire
Line junction is made in zero curve junction using the screw rod of blue screw bolt seat in ground wire junction using the screw rod of red screw bolt seat
With the screw rod of green screw bolt seat, so as to avoid mis-wired.
Wherein, the side wall of screw bolt seat 22 is provided with screw thread, the screw bolt seat 22 passes through the spiral shell with the pilot hole 13
Line cooperation, when screwing screw rod 2 clockwise, screw rod 2 can progress into accommodating cavity 11, and the front end of screw head 21 is led two sheets
Line 3 is fixed together, as shown in Figure 1；Conversely, screw screw rod 2 counterclockwise, screw rod 2 is then gradually backed out vacant chamber 11, two
Conducting wire 3 is released.
Referring to figure 2., the protection against electric shock termination of second embodiment includes: insulating body 1 and tie down screw 2.
Insulating body 1 has an accommodating cavity 11, and the opposite two side walls of the accommodating cavity 11 offer string holes respectively
12, the roof of the accommodating cavity 11 offers pilot hole 13.
Tie down screw 2 is installed in the pilot hole 13, and an end stretches in the accommodating cavity 11, will be from the line
The conducting wire 3 that hole 12 enters a plurality of sheet of the accommodating cavity 11 is fixed together simultaneously electrical communication.It is of particular importance that lock
Tight screw rod 2 is made of screw head 21 and screw bolt seat 22, and the material of the screw head 21 is metal, and the material of the screw bolt seat 22 is
Insulating materials.
Wherein, screw thread is arranged in the side wall of screw head 21, and metal connecting piece 5, the metal connection are provided in accommodating cavity 11
Threaded hole 52 is provided on part 5, the screw thread of 21 side wall of screw head and the threaded hole 52 cooperate, and screw screw rod when clockwise
When 2, screw rod 2 advances, and the conducting wire 3 of two sheets is fixed together by the front end of screw head 21, as shown in Figure 2；Conversely, inverse
Hour hands screw screw rod 2, and screw rod 2 retreats, and two conducting wires 3 are released.
Referring to Fig. 2, metal connecting piece 5 includes top plate and bottom plate and four side plates, is corresponded on the top plate on the side plate
The string holes 12 and the pilot hole 13 are provided with via hole 51 and threaded hole 52.
In a second embodiment, screw thread is arranged on metalwork, since the intensity of metalwork is good compared with plastic part, leads
Line connection effect can be more preferable.
Referring to figure 3., the protection against electric shock termination of 3rd embodiment includes: insulating body 1 and tie down screw 2.
Insulating body 1 has an accommodating cavity 11, and the opposite two side walls of the accommodating cavity 11 offer string holes respectively
12, the roof of the accommodating cavity 11 offers pilot hole 13.
Tie down screw 2 is installed in the pilot hole 13, and an end stretches in the accommodating cavity 11, will be from the line
The a plurality of conducting wire 3 that hole 12 enters the accommodating cavity 11 is fixed together and electrical communication.It is of particular importance that tie down screw 2 by
Screw head 21 and screw bolt seat 22 form, and the material of the screw head 21 is metal, and the material of the screw bolt seat 22 is insulating materials.
Wherein, screw thread is arranged in the side wall of screw head 21, is provided with metal connecting piece 5, specially two gold in accommodating cavity 11
Belong to piece, two sheet metals are in rectangle, and the sheet metal of top is provided centrally with via hole, and the sheet metal of lower section is provided centrally with
Threaded hole, when screwing screw rod 2 clockwise, being threadedly engaged on the threaded hole and screw head 21 at sheet metal center makes lower section
Sheet metal moves upwards, to two conducting wires 3 are clamped between two sheet metals, as shown in Figure 3；Conversely, ought revolve counterclockwise
Screw rod 2 is twisted, the sheet metal of lower section moves downward, and two conducting wires 3 are released.
The preferred plastic spiral pole socket of screw bolt seat 22 in the present invention, and the end of screw head 21 is provided with interconnecting piece 211,
The periphery clinkering that the front end of screw bolt seat 22 is wrapped in the interconnecting piece 211 is fixed, and is linked screw bolt seat 22 and screw head 21 with this
It is integrated.
Referring to figure 4., in one embodiment, the interconnecting piece 211 of 21 end of screw head is designed as cylinder.Also,
Vertical concave and convex stripe 212 is distributed in the side wall of the interconnecting piece 211, and the connection of such screw head 21 and screw bolt seat 22 is more firm
Screw head and screw bolt seat will not be made to disengage Gu screwing screw rod.It is stronger in order to link screw head 21 and screw bolt seat 22, such as Fig. 5
It is shown, radial concave and convex stripe 212 is further distributed in the rear end face of screw head 21.
Please refer to Fig. 6, in another embodiment, the interconnecting piece 211 of 21 end of screw head be designed as it is I-shaped, and
Vertical concave and convex stripe 212 is distributed in the side wall of the interconnecting piece 211.Using the I-shape construction, increase vertical applied force area
Greatly, so as to link screw head 21 and screw bolt seat 22 stronger.
Please refer to Fig. 7, there are also in a kind of embodiment, the interconnecting piece 211 of 21 end of screw head be designed as it is T-shaped, and
Vertical concave and convex stripe 212 is distributed in the side wall of the interconnecting piece 211.
The protection against electric shock termination of the invention can be used in the various open circuits such as master switch, the switch-dividing of small distribution case
In device.
A kind of switch-dividing that distribution box uses is shown in Fig. 8.The switch-dividing includes shell 6, and is arranged at 6 liang of shell
The input terminal 61 and outlet terminal 62 at end, wherein input terminal and outlet terminal connect using the protection against electric shock of second embodiment
Line apparatus, wherein shell 6 is to constitute the insulating body.
Above by specific embodiment, invention is explained in detail, these detailed description are only limited to help
Those skilled in the art understand that the contents of the present invention, can not be interpreted as limiting the scope of the invention.Art technology
Personnel should be included in protection model of the invention to various retouchings, the equivalent transformation etc. that above scheme carries out under present inventive concept
In enclosing.
Claims (10)
1. a kind of protection against electric shock termination, comprising:
Insulating body (1), has an accommodating cavity (11), and the opposite two side walls of the accommodating cavity offer string holes respectively
(12), the roof of the accommodating cavity offers pilot hole (13)；And
Tie down screw (2), is installed in the pilot hole, and an end stretches in the accommodating cavity, will be from the string holes
A plurality of conducting wire into the accommodating cavity is fixed together and electrical communication；
It is characterized by: the tie down screw (2) is made of screw head (21) and screw bolt seat (22), the material of the screw head (21)
Matter is metal, and the material of the screw bolt seat (22) is insulating materials.
2. protection against electric shock termination according to claim 1, it is characterised in that: the end of the screw head (21) is provided with
Interconnecting piece (211), the screw bolt seat (22) are plastic spiral pole socket, and the front end of screw bolt seat is wrapped in the periphery clinkering of the interconnecting piece
It is fixed.
3. protection against electric shock termination according to claim 2, it is characterised in that: the interconnecting piece is cylindrical, it is T-shaped or
It is I-shaped.
4. protection against electric shock termination according to claim 3, it is characterised in that: the side wall of the interconnecting piece (211) is distributed
Have vertical concave and convex stripe (212), radial direction is distributed in the end face of the interconnecting piece (211), and/or the rear end face of the screw head
Concave and convex stripe (212).
5. protection against electric shock termination according to claim 1, it is characterised in that: the screw bolt seat (22) is provided with for marking
Know the colour code of circuit types, the rear end face of the entire screw bolt seat or the screw bolt seat is arranged in the colour code.
6. protection against electric shock termination according to claim 1, it is characterised in that: the side wall of the screw bolt seat (22) is provided with
Screw thread, the screw bolt seat and the pilot hole are threadedly engaged, by described to drive the tie down screw to enter or exit described
Accommodating cavity.
7. protection against electric shock termination according to claim 1, it is characterised in that: spiral shell is arranged in the side wall of the screw head (21)
Line, the accommodating cavity (11) is interior to be provided with metal connecting piece (5), is provided with threaded hole, screw head on the metal connecting piece (5)
The screw thread and the threaded hole of side wall cooperate.
8. protection against electric shock termination according to claim 7, it is characterised in that: the metal connecting piece (5) include top plate,
Bottom plate and four side plates on the top plate and correspond to the string holes (12) on the side plate and the pilot hole (13) were provided with
Hole (51) and threaded hole (52).
9. protection against electric shock termination according to claim 7, it is characterised in that: the metal connecting piece (5) is two gold
Belong to piece, two sheet metals are in rectangle, and sheet metal is provided centrally with via hole, another sheet metal
It is provided centrally with the threaded hole, conducting wire is clamped between two sheet metals.
10. a kind of breaker, including shell (6), and the input terminal (61) and outlet terminal (62) at shell both ends are set,
It is characterized by: the input terminal and the outlet terminal are protection against electric shock wiring described in any one of claim 1 to 9
Device, the shell constitute the insulating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811420369.2A CN109509688A (en) | 2018-11-26 | 2018-11-26 | A kind of protection against electric shock termination and the breaker using the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811420369.2A CN109509688A (en) | 2018-11-26 | 2018-11-26 | A kind of protection against electric shock termination and the breaker using the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109509688A true CN109509688A (en) | 2019-03-22 |
Family
ID=65750607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811420369.2A Pending CN109509688A (en) | 2018-11-26 | 2018-11-26 | A kind of protection against electric shock termination and the breaker using the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109509688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117373879A (en) * | 2023-12-06 | 2024-01-09 | 徐州以勒电器科技有限公司 | Circuit breaker with electric shock preventing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778287A (en) * | 1953-09-01 | 1957-07-03 | Heinz Theobald Ludtke | Improvements in or relating to electrical clamping screws |
| CN101355199A (en) * | 2007-07-26 | 2009-01-28 | Abb股份有限公司 | Screw connecting terminal and method for its production |
| CN102881528A (en) * | 2012-09-25 | 2013-01-16 | 上海诺雅克电气有限公司 | Circuit breaker |
| CN104466445A (en) * | 2014-10-29 | 2015-03-25 | 公牛集团有限公司 | Wiring terminal capable of preventing mis-insertion |
| CN204391343U (en) * | 2014-10-17 | 2015-06-10 | 温州市建达电子有限公司 | A kind of wall type supply socket distinguishing socket |
| CN106025658A (en) * | 2016-06-30 | 2016-10-12 | 西安蓝钻电子科技有限公司 | Wiring terminal with characteristic of convenient correct wiring identification |
| CN106981794A (en) * | 2017-03-03 | 2017-07-25 | 广西秀美壮乡能源环保有限公司 | A kind of detachable socket of power line |
| CN206878185U (en) * | 2017-04-28 | 2018-01-12 | 乐清市三冠电器厂 | A kind of wiring construction, quiet plug-in unit and binding post |
| CN208985939U (en) * | 2018-11-26 | 2019-06-14 | 深圳时空科技集团有限公司 | A kind of protection against electric shock termination |
| CN212162097U (en) * | 2020-06-02 | 2020-12-15 | 郑国扬 | Novel wiring terminal |
-
2018
- 2018-11-26 CN CN201811420369.2A patent/CN109509688A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB778287A (en) * | 1953-09-01 | 1957-07-03 | Heinz Theobald Ludtke | Improvements in or relating to electrical clamping screws |
| CN101355199A (en) * | 2007-07-26 | 2009-01-28 | Abb股份有限公司 | Screw connecting terminal and method for its production |
| CN102881528A (en) * | 2012-09-25 | 2013-01-16 | 上海诺雅克电气有限公司 | Circuit breaker |
| CN204391343U (en) * | 2014-10-17 | 2015-06-10 | 温州市建达电子有限公司 | A kind of wall type supply socket distinguishing socket |
| CN104466445A (en) * | 2014-10-29 | 2015-03-25 | 公牛集团有限公司 | Wiring terminal capable of preventing mis-insertion |
| CN106025658A (en) * | 2016-06-30 | 2016-10-12 | 西安蓝钻电子科技有限公司 | Wiring terminal with characteristic of convenient correct wiring identification |
| CN106981794A (en) * | 2017-03-03 | 2017-07-25 | 广西秀美壮乡能源环保有限公司 | A kind of detachable socket of power line |
| CN206878185U (en) * | 2017-04-28 | 2018-01-12 | 乐清市三冠电器厂 | A kind of wiring construction, quiet plug-in unit and binding post |
| CN208985939U (en) * | 2018-11-26 | 2019-06-14 | 深圳时空科技集团有限公司 | A kind of protection against electric shock termination |
| CN212162097U (en) * | 2020-06-02 | 2020-12-15 | 郑国扬 | Novel wiring terminal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117373879A (en) * | 2023-12-06 | 2024-01-09 | 徐州以勒电器科技有限公司 | Circuit breaker with electric shock preventing structure |
| CN117373879B (en) * | 2023-12-06 | 2024-02-23 | 徐州以勒电器科技有限公司 | Circuit breaker with electric shock preventing structure |
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