CN207587676U - A kind of moving contact of breaker - Google Patents
A kind of moving contact of breaker Download PDFInfo
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- CN207587676U CN207587676U CN201721858502.3U CN201721858502U CN207587676U CN 207587676 U CN207587676 U CN 207587676U CN 201721858502 U CN201721858502 U CN 201721858502U CN 207587676 U CN207587676 U CN 207587676U
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- moving contact
- contact
- piece
- contact piece
- moving
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Abstract
A kind of moving contact of breaker including contact support, shaft, moving contact piece, is flexible coupling and movable contact bus bar, and shaft is rotatably arranged on contact and supports, be flexible coupling one end electrical connection moving contact piece, other end electrical connection movable contact bus bar, it is characterised in that：Further include a moving contact rack, the moving contact rack includes multiple stent grid for being separated by setting, the stent grid and the moving contact piece are staggered mutually setting, and first connecting portion fixed with each stent grid and second connecting portion are respectively provided in the both sides of moving contact rack.Due to having additional contact supporting, contact supporting ensures the gap between each moving contact piece, while also ensure the intensity of stent grid by the fixed stent grid in both sides, and breaker is enable to meet the requirement to high short resistance to, high breaking, miniaturization.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of moving contact of breaker.
Background technology
Breaker is the pith of electrical power distribution apparatus, is mainly used for industrial low-voltage power system, for connecting and disjunction
Electric current and protection circuit and power-supply device in mains-power circuit are from the danger of the failures such as overload, under-voltage, short circuit, single-phase earthing
Evil.In actual use, when breaker is in closed state, when occurring short trouble in circuit, property by choice
The needs of protection, it is desirable that breaker can within a specified time bear the electrodynamic action of short circuit current generation and be failure to actuate, and have
The moving contact piece that body is shown as in movable contact system cannot generate reprimand due to the electric power between contact and open or Welding Phenomena.
Referring to Fig. 1, a kind of moving contact structure for breaker in the prior art, the moving contact is supported including contact
1st, shaft 3, bottom bracket 4, touch spring 5, moving contact piece 6, the 7, movable contact bus bar 8 that is flexible coupling, Contact Cover 9 support 1 in contact
Both sides be equipped with contact side plate 2, between the contact side plate 2 be equipped with shaft 3.Described is flexible coupling described in 7 electrical connections
Moving contact piece 6 and movable contact bus bar 8, the movable contact bus bar 8 are fixed on the bottom bracket 4, and bottom bracket 4 is fixed
On circuit breaker base.The lower end rotation of contact side plate 2 is connected on bottom bracket 4, and movable contact bus bar 8 is fixed on bottom
On stent 4, the moving contact piece 6 is sleeved in shaft 3.Contact Cover 9 covers on the forepart of moving contact.Existing in the present solution,
The contact supports 1 to be equipped with the contact extended to 6 direction of moving contact piece and supports grid 11, and the contact supports grid 11
To be multiple, multiple contacts support grid 11 to be disposed between adjacent moving contact piece 6.
Referring to Fig. 2, another moving contact structure for breaker in the prior art, the moving contact equally includes upper
Each component stated, difference lies in：The contact supports that contact is not provided on 1 supports grid 11, but is equipped in Contact Cover 9
The Contact Cover grid 91 extended to 6 direction of moving contact piece, the Contact Cover grid 91 are similarly multiple, multiple Contact Cover grid
91 are disposed between adjacent moving contact piece 6.
In existing above-mentioned two scheme, since the contact supports that grid 11, Contact Cover grid 91 are from contact
It supports what is directly extended out in 11 and Contact Cover 9, is not connected in end and closing or fixation cannot be formed so that grid
Clearance control between moving contact piece 6 is more difficult.If gap is excessive, it can not effectively inhibit the inclination of moving contact piece 6；If otherwise
Gap is too small, then can increase the frictional force between moving contact piece 6 and grid, influence the normal rotation of conductive sheet, cause dynamic and static
Poor contact of contacts.Both situations can reduce the tolerance performance in short-term of breaker, and since grid does not connect in end
It connects and closing or fixation cannot be formed, lead to the remitted its fury of grid and may be not enough to resist the inclination of moving contact piece 6, especially
Breaker is under the premise of to high short resistance to, high breaking, miniaturization trend, with the increase of 6 quantity of moving contact piece, grid
Thickness will constantly reduce, and intensity also further declines therewith.
Invention content
The task of the utility model is to provide for a kind of moving contact of breaker, and with contact supporting, contact supporting leads to
The fixed stent grid in both sides is crossed to ensure the gap between each moving contact piece, while also ensure the intensity of stent grid.
What the task of the utility model was performed by, a kind of moving contact of breaker, including contact support, shaft,
Moving contact piece is flexible coupling and movable contact bus bar, and shaft is rotatably arranged on contact and supports, be flexible coupling one end electrical connection moving contact
Piece, other end electrical connection movable contact bus bar, further includes a moving contact rack, and the moving contact rack is separated by setting including multiple
Stent grid, the stent grid and the moving contact piece are staggered mutually setting, in the both sides of moving contact rack
It is respectively provided with first connecting portion fixed with each stent grid and second connecting portion.
In a specific embodiment of the utility model, the both sides that the contact is supported are fixed with a pair of of contact side
Plate, shaft are rotatably arranged on a pair of of contact side plate；One group of contact is provided between the moving contact piece and contact are supported
Spring, one end of each touch spring is resisted against contact and supports, and the other end is resisted against corresponding moving contact on piece, moving contact piece
It is rotatably arranged in shaft with moving contact rack.
In another specific embodiment of the utility model, the stent grid is equipped with rack mounting apertures, institute
The moving contact on piece stated is equipped with moving contact piece rotation hole, and the shaft passes through moving contact piece rotation hole and rack mounting apertures.
In another specific embodiment of the utility model, the moving contact piece further include the fixing groove that is flexible coupling,
Against chamber, wherein touch spring is located at moving contact on piece close to the side of touch spring against chamber, and moves for movable contact, touch spring
Contact is located at side of the moving contact on piece far from touch spring；The first connecting portion is located at the side of movable contact, described
Second connecting portion is located at touch spring against the side of chamber.
In another specific embodiment of the utility model, in each stent grid there is clearance groove, make
The gap obtained between moving contact piece and stent grid is controlled.
The utility model so that in a specific embodiment, the first connecting portion include the first upper cross-beam
With the first lower crossbeam, first upper cross-beam and the first lower crossbeam are arranged at intervals；The second connecting portion includes
Second upper cross-beam and the second lower crossbeam, second upper cross-beam and the second lower crossbeam are arranged at intervals.
In the utility model more and in a specific embodiment, second upper cross-beam is equipped with for contact bullet
Spring by spring pass through hole and the spring occlusion part for spacing contact spring and moving contact exterior space, the spring hides
The telescopic direction of stopper from the second upper cross-beam upper edge touch spring extends.
In the utility model again and in a specific embodiment, the both sides that the contact is supported are fixed with a pair of of contact
Side plate, shaft are rotatably arranged on a pair of of contact side plate；One group is provided between the moving contact piece and contact are supported to touch
Head spring, one end of each touch spring is resisted against contact and supports, and the other end is resisted against corresponding moving contact on piece, moving contact
Piece is rotatably arranged in shaft, the moving contact rack is fixed on contact and supports.
The utility model again again and in a specific embodiment, moving contact rack include stent mounting hole, a spiral shell
Moving contact rack is fixed to contact across stent mounting hole and supported by nail.
The utility model is ensured each dynamic due to having additional contact supporting, contact supporting by the fixed stent grid in both sides
Gap between contact blade, while also ensure the intensity of stent grid enables breaker to meet to high short resistance to, high breaking, small
The requirement of typeization development.
Description of the drawings
Fig. 1 is a kind of moving contact schematic diagram of breaker in the prior art.
Fig. 2 is another moving contact schematic diagram of breaker in the prior art.
Fig. 3 is the exploded perspective view of moving contact of breaker in the utility model first embodiment.
Fig. 4 is the side schematic view of moving contact of breaker in the utility model first embodiment.
Fig. 5 is the movable contact spring side schematic diagram described in the utility model first embodiment.
Fig. 6 is the movable contact spring opposite side schematic diagram described in the utility model first embodiment.
Fig. 7 is the contact supporting side schematic diagram described in the utility model first embodiment.
Fig. 8 is the contact supporting opposite side schematic diagram described in the utility model first embodiment.
Fig. 9 is the exploded perspective view of moving contact of breaker in the utility model second embodiment.
In figure：1. contact is supported, 11. contacts support grid；2. contact side plate；3. shaft；4. bottom bracket；5. contact bullet
Spring；6. moving contact piece, 61. moving contact piece rotation holes, 62. are flexible coupling fixing groove, 63. movable contacts, 64. touch springs against chamber；
7. it is flexible coupling；8. movable contact bus bar；9. Contact Cover, 91. Contact Cover grid；10. moving contact rack, 101. stent grid, 1011.
Rack mounting apertures, 1012. clearance grooves, 102. first connecting portions, 1021. first upper cross-beams, 1022. first lower crossbeams,
103. second connecting portion, 1031. second upper cross-beams, 10311. springs pass through hole, 10312. spring occlusion parts, 1032. second
Lower crossbeam, 104. stent mounting holes；20. moving contact swing rod；30. movable contact bus bar installing plate.
Specific embodiment
Applicant will below be described in detail, but applicant is to reality specific embodiment of the present utility model with reference to attached drawing
The description for applying example is not the limitation to technical solution, and any changed in the form rather than substance according to the utility model design all should
When being considered as the scope of protection of the utility model.
Referring to Fig. 3, moving contact described in the utility model, which includes contact, supports 1, shaft 3.Contact supports 1 both sides to set
There is contact side plate 2, shaft 3 is rotatably arranged on a pair of of contact side plate 2.Support that rotation is provided with moving contact swing rod on 1 in contact
20, the moving contact swing rod 20 with breaker main shaft for being hinged, so as to drive described move after breaker main shaft rotation
Contact is swung, and is realized and the closure of static contact or is detached.The moving contact further includes moving contact piece 6, be flexible coupling 7 and moving contact
Busbar 8.Be flexible coupling 7 one end electrical connection moving contact piece 6, other end electrical connection movable contact bus bar 8.As a result of being flexible coupling 7, make
When proper movable contact bus bar 8 is fixed, the moving contact piece 6 can rotate or move relative to movable contact bus bar 8, meet work
It needs.The moving contact piece 6, be flexible coupling 7 and movable contact bus bar 8 constitute the galvanic circle of moving contact, in moving contact
Electric current passes through.The moving contact piece 6 is multi-disc, it is corresponding it is described be flexible coupling 7 be also it is multiple, so as to moving contact piece 6
In one-to-one correspondence, and the movable contact bus bar 8 is one, offers multiple be flexible coupling fixing groove or the fixations that are flexible coupling thereon
Hole 7 is electrically connected for being flexible coupling with movable contact bus bar 8.One group is equipped between the moving contact piece 6 and contact support 1
Touch spring 5, the quantity of the touch spring 5 is corresponding with the quantity of moving contact piece 6, and one end of touch spring 5 is resisted against tactile
Head is supported on 1, and the other end is resisted against on corresponding moving contact piece 6, so as to provide contact pressure for moving contact piece 6.Described
Movable contact bus bar 8 is fixed on (not shown) on circuit breaker base, and the rotation of moving contact piece 6 is set in shaft 3, therefore dynamic
The motion mode of contact blade 6 is rotates relative to shaft 3.Contact Cover 9 is further fixed on moving contact, the Contact Cover 9 is solid
It is scheduled on contact to support on 1, and limits the rotation of the moving contact piece 6, i.e., when moving contact piece 6 is sent out with shaft 3 for center of rotation
During raw rotation far from touch spring 5, the side of separate the touch spring 5 of the moving contact piece 6 and Contact Cover 9 against, from
And cause moving contact piece 6 from being further continued for rotating.
Referring to Fig. 4, movable contact bus bar installing plate 30, the moving contact are fixed on the movable contact bus bar 8
Busbar installing plate 30 is bending plate, and one bending end is fixed on (not shown) on the pedestal of breaker, movable contact bus bar peace
Another bending end and the movable contact bus bar 8 of loading board 30 are fixed, so as to meet the installation requirements of movable contact bus bar 8.
Please continue to refer to Fig. 3,4, it illustrates moving contact rack 10, the moving contact rack 10 is the invention
Critical component.Its similary rotation is set in shaft 3, and the moving contact piece 6 passes through the moving contact rack 10, described
The moving contact piece 6 of 10 energy space between adjacent of moving contact rack.
Fig. 5,6 are please referred to, in the form of sheets, with moving contact piece rotation hole 61, be flexible coupling the moving contact piece 6 fixing groove
62nd, against chamber 64, the moving contact piece rotation hole 61 arrives for the rotational installation of moving contact piece 6 to be turned for movable contact 63, touch spring
On axis 3, and be flexible coupling fixing groove 62 for be flexible coupling 7 one end be fixed to the moving contact piece 6.Movable contact 63 and contact
Spring is located at the both sides of moving contact piece 6 against chamber 64 respectively, and touch spring is used for supporting for 5 other end of touch spring against chamber 64
It leans on.That is the touch spring is located on moving contact piece 6 against chamber 64 close to the side of touch spring 5, and movable contact
63 are located at the side far from touch spring 5 on moving contact piece 6.The movable contact 63 is used to connect with the stationary contact on static contact
It touches, the two contact is i.e. so that moving contact and static contact conducting.
Fig. 7,8 are please referred to, are the schematic diagram of moving contact rack 10.The moving contact rack 10 is usually by insulating materials system
Into.The moving contact rack 10 includes multiple stent grid 101 for being separated by setting, by institute between adjacent stent grid 101
The moving contact piece 6 stated passes through, i.e. stent grid 101 and moving contact piece 6 is staggered mutually setting, in the stent grid
Rack mounting apertures 1011 are additionally provided on 101, the rack mounting apertures 1011 are located at per in plate rack grid 101, i.e., are touched when dynamic
After mutually installation is complete, the shaft 3 passes through the moving contact piece rotation hole on moving contact piece 6 for head piece 6 and moving contact rack 10
61 and stent grid 101 on rack mounting apertures 1011, and the moving contact piece 6 and moving contact rack 10 can rotate.
Be respectively provided in the both sides of moving contact rack 10 with each 101 fixed first connecting portion 102 of stent grid and
Second connecting portion 103.Specifically, the first connecting portion 102 is located at the front side of side, that is, moving contact of movable contact 63, and
Two connecting portions 103 are located at moving contact spring against the rear side of side, that is, moving contact of chamber 64.Above-mentioned first connecting portion 102 and
The presence of two connecting portions 103 causes each stent grid 101 to obtain fixation in the front-back direction, ensure that stent grid
Gap between 101 effectively inhibits the inclination of moving contact piece 6.Meanwhile improve the intensity of each stent grid 101 so that stent
Grid 101 is not susceptible to deform at work.Preferably, there is clearance groove 1012 in each stent grid 101, it is described
Clearance groove 1012 slot of different depth can be processed according to actual conditions, since the width of movable contact 63 is commonly greater than described
6 width of moving contact piece, i.e., after being installed on moving contact piece 6, both ends are stretched out described dynamic at the both ends of described movable contact 63
Contact blade 6, and the outreach of both sides that can stretch out moving contact piece 6 according to movable contact 63 by setting clearance groove 1012 makes phase
The adjustment answered ensure that the gap between 6 entirety of moving contact piece and stent grid 101.
The first connecting portion 102 include the first upper cross-beam 1021 and the first lower crossbeam 1022, described first
1021 and first lower crossbeam 1022 of upper cross-beam is arranged at intervals, and further strengthens the fixed function for stent grid 101.Together
Sample, the second connecting portion 103 includes the second upper cross-beam 1031 and the second lower crossbeam 1032, the described second top
1031 and second lower crossbeam 1032 of crossbeam is arranged at intervals, and further strengthens the fixed function for stent grid 101.
Second upper cross-beam 1031 be equipped be used for for touch spring 5 by spring pass through 10311 and of hole
In spacing contact spring 5 and the spring occlusion part 10312 of moving contact exterior space.Specifically, the spring occlusion part 10312
Extend from the telescopic direction of 1031 upper edge touch spring 5 of the second upper cross-beam.
Since above-mentioned contact supporting 10 is rotatably arranged in shaft 3, can be followed in real work described
The swing of moving contact piece 6 and swing, therefore its can moving contact piece 6 action during the entire process of each moving contact piece be effectively ensured
Gap between 6, the mutual shake for preventing the moving contact piece 6 from being generated after by electric current.
See Fig. 9, be second embodiment.Moving contact includes contact and supports 1, shaft 3.Contact supports 1 both sides to be fixed with
Contact side plate 2, shaft 3 are rotatably arranged on a pair of of contact side plate 2.Support that rotation is provided with moving contact swing rod on 1 in contact（Figure
In be not shown）, the moving contact swing rod with breaker main shaft for being hinged, so as to it can be driven after breaker main shaft rotation described in
Moving contact swing, realize and the closure of static contact or detach.The moving contact further includes moving contact piece 6, is flexible coupling（In figure
It is not shown）With movable contact bus bar 8.Be flexible coupling one end electrical connection moving contact piece 6, other end electrical connection movable contact bus bar 8.Described
Moving contact piece 6 is flexible coupling（It is not shown in figure）The galvanic circle of moving contact is constituted with movable contact bus bar 8, in moving contact
Electric current passes through.The moving contact piece 6 is multi-disc, and corresponding described being flexible coupling also is multiple, so as to be in moving contact piece
It corresponds, and the movable contact bus bar 8 is one, offers multiple be flexible coupling fixing groove or the mounting holes that are flexible coupling thereon,
For being flexible coupling（It is not shown in figure）With being electrically connected for movable contact bus bar 8.It is supported between 1 in the moving contact piece 6 and contact
Equipped with one group of touch spring 5, the quantity of the touch spring 5 is corresponding with the quantity of moving contact piece 6, one end of touch spring 5
Contact is resisted against to support on 1, and the other end is resisted against on corresponding moving contact piece 6, so as to provide contact pressure for moving contact piece 6
Power.The movable contact bus bar 8 is fixed on (not shown) on circuit breaker base, and the rotation of moving contact piece 6 is set in shaft 3
On, therefore the motion mode of moving contact piece 6 is rotates relative to shaft 3.Main region between the present embodiment and first embodiment
It is not that the moving contact rack 10 is combined as a whole with Contact Cover or the moving contact rack 10 is claimed to contain contact
The function of cover.The moving contact rack 10 include multiple stent grid 101 for being separated by setting, adjacent stent grid 101 it
Between passed through by the moving contact piece 6, i.e. stent grid 101 and moving contact piece 6 is staggered mutually setting.In moving contact rack
10 both sides are respectively provided with and each 101 fixed first connecting portion 102 of stent grid and second connecting portion 103.Specifically,
The first connecting portion 102 is located at the front side of side, that is, moving contact close to movable contact 63, and second connecting portion 103 is located at far
The rear side of side, that is, moving contact from movable contact 63.And in the present embodiment, the moving contact rack 10 is fixed to described
Contact is supported on 1.Specifically, the mounting means of the moving contact rack 10 is, moving contact piece 6 first is penetrated described moving touches
Head bracket 10, the shaft 3 is through the moving contact piece rotation hole 61 of the moving contact piece 6 and the stent of moving contact rack 10
Mounting hole 1011 sets moving contact piece 6 and moving contact rack 10 on a pair of of contact side plate 2.And on moving contact rack 10
Stent mounting hole 104 is fixed to by screw on contact side plate 2, is supported on 1 since contact side plate 2 is fixed on contact, institute
The moving contact rack 10 stated also has been indirectly fixed to contact and has supported on 1.
Claims (9)
1. a kind of moving contact of breaker supports (1) including contact, shaft (3), moving contact piece (6), is flexible coupling (7) and moves and touch
Head busbar (8), shaft (3) are rotatably arranged on contact and support on (1), and be flexible coupling (7) one end electrical connection moving contact piece (6), another
End electrical connection movable contact bus bar (8), it is characterised in that：Further include a moving contact rack (10), the moving contact rack (10)
Including multiple stent grid (101) for being separated by setting, the stent grid (101) and the moving contact piece (6) phase each other
Mutual stagger setting is respectively provided in the both sides of moving contact rack (10) and is connect with each stent grid (101) fixed first
Portion (102) and second connecting portion (103).
2. the moving contact of a kind of breaker according to claim 1, it is characterised in that the contact supports the both sides of (1) to consolidate
Surely there is a pair of of contact side plate (2), shaft (3) is rotatably arranged on a pair of of contact side plate (2)；The moving contact piece (6) with
One group of touch spring (5) is provided between contact support (1), one end of each touch spring (5) is resisted against contact and supports on (1),
And the other end is resisted against on corresponding moving contact piece (6), moving contact piece (6) and moving contact rack (10) are rotatably arranged on shaft
(3) on.
3. the moving contact of a kind of breaker according to claim 1, it is characterised in that set in the stent grid (101)
There are rack mounting apertures (1011), the moving contact piece (6) is equipped with moving contact piece rotation hole (61), and the shaft (3) is worn
Cross moving contact piece rotation hole (61) and rack mounting apertures (1011).
4. the moving contact of a kind of breaker according to claim 2, it is characterised in that the moving contact piece (6) further includes
Against chamber (64), wherein touch spring is touched against chamber (64) positioned at dynamic for the fixing groove that is flexible coupling (62), movable contact (63), touch spring
The side of close touch spring (5) on head piece (6), and movable contact (63) separate touch spring (5) on moving contact piece (6)
Side；The first connecting portion (102) is positioned at the side of movable contact (63), and the second connecting portion (103) is positioned at contact
Spring is against the side of chamber (64).
5. the moving contact of a kind of breaker according to claim 1, it is characterised in that in each stent grid (101)
It is upper that there is clearance groove (1012) so that the gap between moving contact piece (6) and stent grid (101) is controlled.
A kind of 6. moving contact of breaker according to claim 1, it is characterised in that first connecting portion (102) packet
The first upper cross-beam (1021) and the first lower crossbeam (1022) are included, first upper cross-beam (1021) and the first lower section are horizontal
Beam (1022) is arranged at intervals；The second connecting portion (103) includes the second upper cross-beam (1031) and the second lower crossbeam
(1032), second upper cross-beam (1031) and the second lower crossbeam (1032) are arranged at intervals.
A kind of 7. moving contact of breaker according to claim 6, it is characterised in that second upper cross-beam
(1031) be equipped with for touch spring (5) by spring by hole (10311) and for spacing contact spring (5) and moving contact
The spring occlusion part (10312) of exterior space, the spring occlusion part (10312) are touched from the second upper cross-beam (1031) upper edge
The telescopic direction of head spring (5) extends.
8. the moving contact of a kind of breaker according to claim 1, it is characterised in that the contact supports the both sides of (1) to consolidate
Surely there is a pair of of contact side plate (2), shaft (3) is rotatably arranged on a pair of of contact side plate (2)；The moving contact piece (6) with
One group of touch spring (5) is provided between contact support (1), one end of each touch spring (5) is resisted against contact and supports on (1),
And the other end is resisted against on corresponding moving contact piece (6), moving contact piece (6) is rotatably arranged in shaft (3), the moving contact
Stent (10) is fixed on contact and supports on (1).
9. the moving contact of a kind of breaker according to claim 8, it is characterised in that moving contact rack (10) is including stent
Mounting hole (104), a screw pass through stent mounting hole (104) to support moving contact rack (10) on (1) fixed to contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721858502.3U CN207587676U (en) | 2017-12-27 | 2017-12-27 | A kind of moving contact of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721858502.3U CN207587676U (en) | 2017-12-27 | 2017-12-27 | A kind of moving contact of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207587676U true CN207587676U (en) | 2018-07-06 |
Family
ID=62740358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721858502.3U Active CN207587676U (en) | 2017-12-27 | 2017-12-27 | A kind of moving contact of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207587676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935503A (en) * | 2019-03-29 | 2019-06-25 | 厦门宏发开关设备有限公司 | A kind of movable contact system and frame circuit breaker of frame circuit breaker |
-
2017
- 2017-12-27 CN CN201721858502.3U patent/CN207587676U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109935503A (en) * | 2019-03-29 | 2019-06-25 | 厦门宏发开关设备有限公司 | A kind of movable contact system and frame circuit breaker of frame circuit breaker |
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