KR20170086168A - Bus-bar fixed base for distribution box - Google Patents

Bus-bar fixed base for distribution box Download PDF

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Publication number
KR20170086168A
KR20170086168A KR1020160005506A KR20160005506A KR20170086168A KR 20170086168 A KR20170086168 A KR 20170086168A KR 1020160005506 A KR1020160005506 A KR 1020160005506A KR 20160005506 A KR20160005506 A KR 20160005506A KR 20170086168 A KR20170086168 A KR 20170086168A
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KR
South Korea
Prior art keywords
cover
nut
supporting column
slider
bus bar
Prior art date
Application number
KR1020160005506A
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Korean (ko)
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KR101787655B1 (en
Inventor
김원기
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김원기
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Priority to KR1020160005506A priority Critical patent/KR101787655B1/en
Publication of KR20170086168A publication Critical patent/KR20170086168A/en
Application granted granted Critical
Publication of KR101787655B1 publication Critical patent/KR101787655B1/en

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    • 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
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H02B1/207—Cross-bar layouts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • 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
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/042—Mounting on perforated supports by means of screws or locking members
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/14—Fastening of cover or lid to box

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Distribution Board (AREA)

Abstract

Disclosed is a booth bar pedestal for an electric distribution panel, which can be selectively applied to or separated from a booth bar pedestal and a cover pedestal column to be applicable to all kinds of distribution boards.

Description

{BUS-BAR FIXED BASE FOR DISTRIBUTION BOX}

More particularly, the present invention relates to a bus bar support base for a distribution board, and more particularly, to a bus bar support base for a distribution board that can be selectively coupled to or separated from a booth bar support and a support column, To a stationary pedestal.

In general, a distribution board collects and installs various kinds of circuit breakers on a board, and these circuit breakers are connected to indoor wiring such as a building and distribute electric power supplied from the outside to each element in the house, and at the same time, .

Fig. 1 shows an example of a conventional distribution panel. Referring to this, the structure of the distribution board will be described in more detail. The bus bars 2 are alternately arranged in the longitudinal direction and the transverse direction on the substrate 1, and the bus bars 2 are selectively interconnected. The main overcurrent circuit breaker 3 is installed on one side and the other side of the bus bar 2 is fixedly mounted on the bus bar pedestal 4. A plurality of auxiliary overcurrent circuit breakers (5) are connected to both sides of the busbars (2) arranged in the lateral direction. In order to protect the bus bar 2, a protective cover 6 is provided on the front surface of the substrate 1 through a fixing portion 7.

As shown in FIG. 1, in the case of a conventional distribution panel, there is a structure in which a booth bar pedestal for fixing a booth bar and a fixing part for fixing the protective cover are separately provided. As shown in the prior art Patent No. 10-0805392 There is a structure in which the booth bar pedestal and the fixing part are integrally formed.

However, conventionally, since a boom bar pedestal and a fixed part are separated from each other and a booth bar pedestal and a boom bar pedestal are integrally formed, the booth bar pedestal is used differently. Therefore, There is a problem in that a pedestal must be provided. In other words, since there are two types of booth bar pedestals, there is a problem that the maintenance cost is increased and the number of parts to be provided by the worker is increased, thereby providing inconvenience.

1) Korea Patent No. 10-0805392 (Registered on Feb. 13, 2008), title of invention: "Busbar fixing holder for distribution board" 2) Korea Patent No. 10-0566662 (Registered on March 25, 2006), entitled " 3) Korean Registered Patent No. 10-0759524 (filed on September 11, 2007), entitled "Connector and distribution board using the same" 4) Korean Registered Patent No. 10-1161714 (Registered on June 26, 2012), entitled "Circuit Breaker with Safety Cover"

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an improved bus bar for a distribution board, which can be applied to all kinds of distribution boards, Thereby providing a fixed base.

The above-described object is achieved by a bus bar fixed pedestal for a distribution board which supports an end of a bus bar connected and installed in an overcurrent circuit breaker to be fixed to a board of a distribution board, the bus bar fixed pedestal being fixed to the board, A plurality of flow preventing pieces extending upwardly at intervals to form a bus bar mounting space between the flow preventing pieces and the flow preventing pieces, a cover receiving portion is formed between the bus bar mounting space and the bus bar mounting space, A bus bar fastening hole is formed on the bottom surface of the seating space of the bus bar. A nut is buried in the fastening hole of the bus bar, and the bus bar is placed in the seating space of the bus bar. The bolt passes through the bus bar, A booth bar pedestal having a structure for fixing the booth bar in such a manner that the booth bar is fixed to the booth bar; A cover fastening hole is formed on an upper surface of the cover receiving hole, and a nut is embedded in the cover fastening hole so that a protective cover is placed on the upper surface of the cover fastening hole, A cover support column having a structure for fixing the protective cover in such a manner that the cover cover is fastened to the nut through the cover fastener through the protective cover; And a cover supporting column fixing means for selectively fixing or separating the cover supporting column to the cover supporting column mounting portion.

In addition, an extension plate extending laterally is formed on both sides of the upper surface of the cover support column to stably support the protective cover when the support cover is supported and widened.

In order to fill the nut in the bus bar fastening hole, a nut insertion groove communicating with the bus bar fastening hole is formed in a part of the front of the booth bar support, and when the nut is inserted into the nut insertion groove, Wherein a nut is inserted into the cover inserting hole in such a manner that the nut is embedded in the cover inserting hole, and a nut inserting groove communicating with the cover inserting hole is formed in a part of the front face of the cover inserting post, The nut is buried in such a manner that the inlet of the nut insertion groove is closed with the finishing cap.

The cover supporting column fixing means includes a coupling hook formed at the front and rear end portions of the seat supporting column seating portion and formed with hook protrusions protruding in directions opposite to each other, And an engaging portion corresponding to the hook protrusion of the engaging hook is formed on the front and rear sides of the engaging portion, The hook protrusion of the coupling hook is caught by the coupling groove to prevent the cover supporting column from being separated upwardly and the coupling hook prevents the back support movement of the cover supporting column, It is inserted and tightly inserted into the insertion space of the prevention piece to prevent the left and right movement of the support column, Characterized by configured to be fixed.

Since the booth bar stand and the cover supporting column are configured to be selectively engaged or separated by separate cover supporting column fixing means, the booth bar fixing base for a distribution board according to the present invention can be applied to all kinds of distribution boards .

In addition, since the extension plate is provided on both sides of the upper surface of the cover supporting column to increase the contact area when supporting the protection cover, it is possible to stably support the protection cover.

1 is a front view showing an example of a general distribution panel,
FIG. 2 is an exploded perspective view showing one embodiment of a bus bar fixed base for a distribution board according to the present invention, FIG.
3 is an assembled perspective view of FIG. 2,
Figure 4 is an assembled cross-sectional view of Figure 2,
5 is an exploded perspective view showing another embodiment of the bus bar fixed base for a distribution board according to the present invention,
FIG. 6 is an assembled perspective view of FIG. 5,
7 is an exploded perspective view showing still another embodiment of the bus bar fixed base for a distribution board according to the present invention,
8 is an assembled perspective view of Fig.

The present invention will now be described in detail with reference to the accompanying drawings.

2 to 4, the bus bar fixing pedestal for a distribution board according to the present invention is used for supporting an end portion of a bus bar 2 connected and installed in an overcurrent breaker so as to be fixed to a board 1 of a distribution board , The bus bar bed 100 and the cover supporting column 200 are selectively fixed or separated by the cover supporting column fixing means. That is, in the case of a distribution board in which the booth bar stand and the protective cover fixing portion are separately provided according to the type of distribution board, the booth bar bed 100 and the cover support column 200 are separated from each other to use only the booth bar bed 100 , The bus bar base 100 and the cover supporting column 200 are combined by the cover supporting column fixing means in the case of a distribution board integrally formed with the bus bar support and the protective cover fixing portion.

First, the busbabe bed 100 has a rectangular shape with a narrow width and a laterally long length, and a fixing portion 110 is formed at a lower portion of both sides at the lower portion. Fixing holes 112 are formed in the intermediate portion and the fixing portions 110 on both sides so as to be fixed to the substrate 1 and fixed to the substrate 1 in a bolt manner through the fixing holes 112 . A plurality of the flow preventing pieces 120 are upwardly extended from the upper surface of the booth bar 2 at a distance corresponding to the width of the booth bar 2 to form a space between the flow preventing pieces 120 and the flow preventing pieces 120 140 are formed. A bus bar seating space 140 is formed at four locations on the left and right sides and at the left and right ends, respectively, with reference to the fixing hole 112 in the middle portion. A cover supporting column seating part 130 is formed between the bus bar seating space 140 at the middle and the bus bar seating space 140 at the end. A bus bar fastening hole 142 is formed on a bottom surface of the bus bar seating space 140. A nut N is buried in the bus bar fastening hole 142, The boom bar 2 is fixed by fixing the boom bar 2 in a manner that the bolt B passes through the boom bar 2 and is fastened to the nut N through the boom bar fastening hole 142.

The method of embedding the nut N in the bus bar fastening hole 142 is such that a nut insert groove H communicating with the bus bar fastening hole 142 is formed at a front portion of the bus bar bar bed 100, The nut is buried in such a manner that the entrance of the nut insertion groove H is closed with the finishing cap C in a state where the nut N is inserted into the nut insertion groove H. As a matter of course, a known technique such as a hook method or an interference fit method may be applied to the method of closing and fixing the inlet of the nut insertion groove H with the finishing cap C.

Next, the cover supporting column 200 is vertically installed on the cover supporting column seating portion 130 so as to have a rectangular column shape, and is installed to be selectively fixed or separated by the cover supporting column fixing means. A cover fixing hole 202 is formed on the upper surface of the cover supporting column 200. A nut N is buried in the cover fixing hole 202 and the protective cover 6 is placed on the upper surface of the cover fixing hole 202, Is fastened to the nut (N) through the cover fastening hole (202) through the protective cover (6).

The method of embedding the nut N in the cover fastening hole 202 is such that a nut insertion groove H communicating with the cover fastening hole 202 is formed in a front portion of the cover supporting column 200, The nut N is buried in such a manner that the entrance of the nut insertion hole H is closed with the finishing cap C in a state where the nut N is inserted into the groove H. [ As a matter of course, a known technique such as a hook method or an interference fit method may be applied to the method of closing and fixing the inlet of the nut insertion groove H with the finishing cap C.

In addition, it is preferable that the extension plates 210 extending in the lateral direction are integrally formed on both sides of the upper surface of the cover support column 200 to stably support the protective cover 6 when it is supported and extended.

Next, the cover supporting column fixing means is provided for selectively fixing or separating the cover supporting column 200 to the cover supporting column mounting portion 130, and one embodiment of the cover supporting column fixing means according to the present invention And includes a coupling hook 150 and a coupling portion 220. The coupling hooks 150 are formed at the front and rear ends of the seat support post seating portion 130 and have hook protrusions 152 protruded in directions opposite to each other. The coupling part 220 extends integrally downward from the lower part of the cover supporting column 200 and has a coupling groove 222 corresponding to the hook projection 152 of the coupling hook 150 formed on the front side and the rear side And a flow prevention member insertion space 224 is formed on both sides of the flow prevention member 120 so as to be inwardly inward by a thickness of the flow prevention member 120.

Therefore, when the engaging portion 220 is simply placed on the upper portion of the cover receiving portion 130 and press-fitted, the engaging portion 220 is fixed without the flow. That is, the hook protrusion 152 of the coupling hook 150 is caught by the coupling groove 222 to prevent the cover supporting column 200 from being separated upward, and the coupling hook 150 is engaged with the hook projection 150 of the cover supporting column 200 And the flow restricting pieces 120 on both sides are inserted into the flow restricting piece insertion space 224 of the engaging portion 220 to prevent the cover supporting column 200 from moving left and right, do.

2, it is preferable that the separating groove 154 is formed on the upper surface of the coupling hook 150 so that a driver can be inserted. That is, when the hook protrusion 152 of the coupling hook 150 is engaged with the coupling groove 222 of the coupling part 220 so that the coupling part 220 is not detached, the cover supporting pillars 200 are separated It is not easy to separate the cover supporting pillars 200 by inserting the coupling hooks 150 with fingers so that the coupling hooks 150 can be opened by using a screwdriver or the like, (154). Here, it is preferable that the separation groove 154 is formed so as to have a cross-shaped groove so that a phillips screwdriver and a flat-blade screwdriver can all be applied.

The cover supporting column fixing means thus constructed is an embodiment according to the present invention. In the present invention, a cover supporting column fixing means having a different structure as shown in FIGS. 5 to 8 may be applied.

5 and 6, another embodiment of the cover supporting column fixing means is composed of the slider 230 and the slider coupling protrusion 160. As shown in FIG. The slider 230 integrally extends downward from the lower surface of the cover supporting column 200 and has a structure in which a locking stone piece 232 protrudes laterally at both lower ends thereof. The slider coupling protrusion 160 protrudes from the upper portion of the cover receiving portion 130 and has a slider insertion groove 162 through which the slider 230 is inserted. And a latching space 164 is formed at both lower ends of the slider inserting groove 162 so that the latching piece 232 is inserted and latched laterally.

Therefore, when the slider 230 is simply pushed rearwardly against the inlet of the slider insertion groove 162, it is fixed without flowing. In other words, since the rear end of the slider insertion groove 162 is closed when the slider 230 is inserted, it is possible to prevent the slider 230 from moving So that it is prevented from being disengaged from the rear and is fixed as a whole without flowing.

7 and 8, another embodiment of the cover supporting column fixing means is constituted by the triangular slider 240, the triangular slider insertion groove 170, and the locking piece 180. The triangular slider 240 integrally extends downward from the lower surface of the cover supporting column 200, and has a triangular structure having a lower width than that of the upper portion. The triangular slider insertion groove 170 is pierced downward from the seat support post seating part 130. The triangular slider insertion groove 170 is opened at the front side and closed at the rear side, Shaped structure. The engaging piece 180 is formed to protrude from the front end of the triangular slider insertion groove 170 and is brought into close contact with the front of the triangular slider 240 when the triangular slider 240 is inserted into the triangular slider insertion groove 170, (240) is prevented from falling forward.

Therefore, when the triangular slider 240 is simply pushed in so as to be inserted in front of the triangular slider insertion groove 170, it is fixed without any flow. That is, both ends of the triangular slider 240 are caught by the triangular slider insertion grooves 170 to prevent upward separation or lateral movement of the triangular slider 240, and the rear of the triangular slider 240 is provided at the rear of the triangular slider insertion groove 170 And the forward part is caught by the latching piece 180 to prevent the back and forth movement and is fixed as a whole without flowing.

The cover supporting column fixing means according to the present invention is not limited to the above-described embodiments and other structures can be applied as long as the cover supporting column 200 can be selectively fixed or separated to the cover supporting column seating portion 130 It might be.

Now, a method of installing and using the bus bar fixed base for a distribution board according to the present invention constructed as above will be described.

The bus bar fixing base for a distribution board according to the present invention is installed on a board of a distribution board. When a bus bar support for fixing the bus bar and a fixing part are separately provided for fixing the protection cover, a cover support column 200 When the present invention is applied to a distribution board having a structure in which a booth bar pedestal and a fixing part are integrally formed, a cover supporting column 200 may be combined with the booth bar bed 100 to be used together . Therefore, there is a feature that can be applied to all kinds of distribution boards.

When the booth bar bed 100 and the cover supporting column 200 are combined to use the bus bar fixing base for a distribution board according to the present invention, a nut (not shown) is first inserted into the bus bar fixing hole 142 of the booth bar bed 100 N are buried in the cover supporting column 200 and the nut is buried in the cover fixing hole 202 of the cover supporting column 200 and then the bus bar bed 100 and the cover supporting column 200 are fixed to the cover supporting column fixing means You can combine them.

When the bus bar fixing base for a distribution board according to the present invention is installed in the distribution board, the bus bar bed 100 is first placed on the mounting position on the board 1, and the bolts are fastened through the fixing holes 112 Fixed. Thereafter, the bus bars 2 corresponding to the respective bus bar seating spaces 140 are placed and the bolts B are passed through the bus bars 2 and fastened to the nuts N through the bus bar fastening holes 142 So that the bus bar 2 is fixed. The protective cover 6 is placed on the upper surface of the cover supporting column 200 and the fixing bolt B is secured to the nut N through the cover fixing hole 202 through the protective cover 6. [ The cover 6 is fixed. This completes the installation.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who can afford it will know.

1: substrate 2: bus bar
6: protective cover 100: booth bar stand
110: fixing part 112: fixing part
120: flow restricting piece 130:
140: Bus bar seating space 142: Bus bar fastener
150: coupling hook 152: hook projection
154: separation groove 160: slider coupling projection
162: Slider insertion groove 164:
170: triangular slider insertion groove 180:
200: a cover supporting column 202: a cover fastening hole
210: extension plate 220:
222: coupling groove 224: flow prevention piece insertion space
230: Slider 232:
240: Triangular slider B: Bolt
C: Finishing cap H: Nut insertion groove
N: Nut

Claims (6)

A bus bar fixed pedestal for a distribution board that supports an end portion of a bus bar connected and connected to an overcurrent breaker to be fixed to a board of a distribution board,
And a plurality of flow preventing members extending upwardly at an interval of a width of the booth bar, the booth bar receiving space being formed between the flow preventing member and the flow preventing member, And a bus bar fastening hole is formed on the bottom surface of the seat fastening space. A nut is buried in the fastening hole of the bus bar to raise the bus bar in the seating space of the bus bar. A booth bar pedestal having a structure in which a bolt passes through a booth bar and is fastened to a nut through a booth bar fastening hole;
A cover fastening hole is formed on an upper surface of the cover receiving hole, and a nut is embedded in the cover fastening hole so that a protective cover is placed on the upper surface of the cover fastening hole, A cover support column having a structure for fixing the protective cover in such a manner that the cover cover is fastened to the nut through the cover fastener through the protective cover; And
And a cover supporting column fixing means for selectively fixing or separating the cover supporting column to the cover supporting column mounting portion.
The method according to claim 1,
Wherein an extension plate extending laterally is formed on both sides of the upper surface of the cover support column to stably support the protective cover when the support cover is supported and widened.
The method according to claim 1,
In order to fill the nut in the bus bar fastening hole, a nut insertion groove communicating with the bus bar fastening hole is formed in a part of the front portion of the booth bar support. When the nut is inserted into the nut insertion groove, The nut is buried in such a manner that the nut is buried,
In order to embed a nut in the cover fastening hole, a nut insertion groove communicating with the cover fastening hole is formed in a part of the front surface of the cover supporting column. When the nut is inserted into the nut insertion groove, Wherein the nut is embedded in the bus bar.
3. The method according to claim 1 or 2,
The cover supporting column fixing means comprises:
A coupling hook formed at the front and rear end portions of the seat receiving portion of the cover, and having hook protrusions protruded in directions opposite to each other;
A pair of locking protrusions are formed on the front and rear sides, respectively, corresponding to the hook protrusions of the coupling hooks, and on both sides of the locking protrusions, And a coupling portion formed,
When the engaging portion is fitted in the upper part of the seat receiving portion of the cover supporting post, the hook projection of the engaging hook is caught by the engaging groove to prevent the cover supporting column from being separated upward, and the engaging hook prevents the back supporting post from moving back and forth, And the flow restricting piece is inserted into and adhered to the flow restricting piece insertion space of the coupling portion to prevent the cover supporting column from moving to the left and right, thereby fixing the flow restricting piece without flow as a whole.
3. The method according to claim 1 or 2,
The cover supporting column fixing means comprises:
A slider integrally formed extending downward from a lower surface of the cover supporting column and having a stumbling block projected laterally at both lower ends thereof,
A slider insertion groove is formed at a center of the front end of the cover supporting column seating portion and a rear portion of the slider insertion groove is closed and a locking stone piece is inserted and latched laterally at both lower ends of the slider insertion groove And a slider coupling portion formed with a locking space,
Wherein when the slider is pushed into the slider inserting groove, the engaging piece is inserted into the engaging space to be separated in the upward direction or prevented from moving left and right.
3. The method according to claim 1 or 2,
The cover supporting column fixing means comprises:
A triangular slider extending integrally downward from a lower surface of the cover supporting column and having a width smaller than that of the upper portion,
A triangular slider inserting groove formed in the lower portion of the seating portion of the cover supporting column so as to have a triangular shape having a width larger than that of the upper portion,
And a latch piece protruding from the front end of the triangular slider insertion groove to be brought into close contact with the front of the triangular slider when the triangular slider is inserted into the triangular slider insertion groove,
When the triangular slider is pushed in so as to be inserted into the triangular slider insertion groove from the front, both ends of the triangular slider are caught by the triangular slider insertion groove to prevent upward movement or lateral movement of the triangular slider, And the front part is caught by the latching part so as to be prevented from moving forward and backward so as to be fixed with no flow as a whole.
KR1020160005506A 2016-01-15 2016-01-15 Bus-bar fixed base for distribution box KR101787655B1 (en)

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Application Number Priority Date Filing Date Title
KR1020160005506A KR101787655B1 (en) 2016-01-15 2016-01-15 Bus-bar fixed base for distribution box

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KR101787655B1 KR101787655B1 (en) 2017-10-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220121123A (en) * 2021-02-24 2022-08-31 이성국 Fixture for mounting current circuit breaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001028824A (en) * 1999-07-12 2001-01-30 Hitachi Cable Ltd Bus duct
JP5375734B2 (en) * 2010-05-11 2013-12-25 住友電装株式会社 Bus bar attendant
KR101085990B1 (en) * 2010-08-19 2011-11-30 박관수 A bus-bar coupling device for cabinet panel
KR200477487Y1 (en) * 2014-11-19 2015-06-16 김태원 Bus bar fixing apparatus for distribution board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220121123A (en) * 2021-02-24 2022-08-31 이성국 Fixture for mounting current circuit breaker

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