CN206179809U - Multiple breakpoint direct current breaker - Google Patents
Multiple breakpoint direct current breaker Download PDFInfo
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- CN206179809U CN206179809U CN201621211953.3U CN201621211953U CN206179809U CN 206179809 U CN206179809 U CN 206179809U CN 201621211953 U CN201621211953 U CN 201621211953U CN 206179809 U CN206179809 U CN 206179809U
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- short circuit
- circuit conductor
- connecting terminal
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- upper connecting
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Abstract
The utility model discloses a multiple breakpoint direct current breaker, including base, upper and lower binding post and move, quiet contact part spare, in the base plate, be equipped with the through -hole corresponding to last binding post and the appointed position department of moving the connecting plate of contact part spare to binding post can be linked together with back of the substrate's exterior space with appointed connecting plate on the messenger, the circuit breaker still includes short circuit conductor and stopper, and the short circuit conductor is in binding post and adjacent the moving between the connecting plate of contact part spare on or between adjacent last binding post of the back connection of base plate, and the stopper is set to sentence at the last binding post who does not have external lead wire in the front of base plate and is formed completely cutting off of the last binding post that corresponds and exterior space. The utility model discloses a to the improvement that concatenates the structure, can realize on the basis of not causing product volume increase and cost -push on the one hand that multiple breakpoint establishes ties, on the other hand can realize that same circuit breaker is two kinds of enterprising line translations of mode of connection to have the convenient characteristics of conversion.
Description
Technical field
This utility model is related to breaker technical field, more particularly to a kind of multibreak dc circuit breaker.
Background technology
Into new century since, solar photovoltaic industry has become one of most popular new industry in the world today, light
Volt generating need not be processed using raw material, and non-exhaust emission belongs to green energy resource, with pollution-free, safety, long-life, money
The features such as source distribution is extensively, resource is never exhausted, can be widely applied to space flight, communication, the energy, agricultural, communal facility, traffic,
The fields such as commercial power.
With the fast development of new forms of energy industry, it is more and more extensive that DC techniques are also applied therewith, particularly solar energy
The running voltage of electricity generation system also more and more higher, its running voltage would generally reach 1000V, and in photo-voltaic power supply straight-flow system
In, the rated operational voltage of low-voltage electrical apparatus has been up to 1500V.
Because DC current does not have zero passage, direct current breath arc is caused to become a difficult point of dc circuit breaker；So most raw
Producer is produced by improving the interrupting performance of chopper using the mode of connection of multibreak series connection.
At present majority manufacturer adopts the mode of connection of outlet under lower inlet wire, typically in the external wiring terminal of chopper
Place carries out concatenation wiring, and the two poles of the earth or multi-stage series connection for making chopper are got up to form series-break, and this mode is typically using short
Connecing conductor carries out wiring, short circuit conductor or external terminals, or built-in terminals, regardless of whether that mode of connection is existed outward
The exposed problem outside pedestal of conductor part of wiring, existing processing mode is to increase protected enclosure, and (such as Chinese patent is public
Disclosed by announcement CN204117999U), thus cause and take up room larger, and protect cover arrangement complexity cost of manufacture high
The drawbacks of.
Ye You manufacturers using outlet under upper incoming line the mode of connection, its be by moving contact joint cover directly with it is adjacent
Static contact is connected, this mode, is easily caused in the space of small range not easy heat radiation, affects performance and temperature rise, and inner space
Closing be also problem, and affect arc quenching effect.
Regardless of whether be the mode of connection or the mode of connection using outlet under upper incoming line for adopting outlet under lower inlet wire, it is existing
A chopper is only capable of realizing a kind of mode of connection therein in technology, it is impossible to realize the conversion of the mode of connection.
Utility model content
The purpose of this utility model is the deficiency for overcoming prior art, there is provided a kind of multibreak dc circuit breaker, is passed through
Improvement to series connection structure, on the one hand can realize multibreak on the basis of not causing small product size increase and its cost to increase
Series connection, on the other hand, can realize that same chopper is changed in two kinds of modes of connection, and convenient special with conversion
Point.
This utility model solves the technical scheme that its technical problem adopted：A kind of multibreak dc circuit breaker, including
Pedestal, upper and lower binding post and dynamic and static contact component；The upper and lower binding post and dynamic and static contact component are attached separately to base
The front of the substrate of seat is simultaneously carried out mutually isolated by the divider wall of pedestal；In the substrate, corresponding to upper connecting terminal and
Through hole is additionally provided with the position of the gusset piece of the moving contact part specified, so that upper connecting terminal and the specified gusset piece can
It is connected with the space outerpace of substrate back；Chopper also includes short circuit conductor and stopper, the back of the body of the short circuit conductor in substrate
Face is connected between adjacent upper connecting terminal or between upper connecting terminal and the gusset piece of adjacent moving contact part, the plug
Son is embedded at the upper connecting terminal without external lead wire empty with outside to form corresponding upper connecting terminal in the front of substrate
Between isolation.
The back side of the substrate of the pedestal is additionally provided with groove, and the short circuit conductor is contained in the recessed of the back side of the substrate of pedestal
In groove.
Further, also including a base plate, the base plate is fixed on the back side of substrate and is covered in the groove, so that
The short circuit conductor being contained in the groove at the back side of substrate forms isolation with space outerpace.
The one side of the stopper is provided with nut slot, and nut slot is embedded with the nut of correspondingly-shaped, stopper with nut slot
One side ride on upper connecting terminal to form the isolation of the upper connecting terminal and space outerpace from the front of substrate；In substrate
Back side screw spins and mutually fix through short circuit conductor and upper connecting terminal and with the nut in nut slot so that short circuit conductor with
It is connected between upper connecting terminal.
The short circuit conductor is connected to be connected in and is mutually fixed using screw with the gusset piece of corresponding moving contact part.
The short circuit conductor includes that the first short circuit conductor of U-shape is short with the second of the middle elongate in shape for being provided with bending
Conductor is connect, the chopper selectively adopts the first short circuit conductor to be connected between adjacent upper connecting terminal to enter under formation
Outlet Connection Mode under line, or the connection of upper connecting terminal and adjacent moving contact part is connected to using the second short circuit conductor
With outlet Connection Mode under formation upper incoming line between fishplate bar.
First short circuit conductor is flake structure, and in two end heads of the first short circuit conductor First is respectively equipped with
Rank, so that two terminations of the first short circuit conductor can be respectively embedded in the corresponding through hole of substrate and corresponding upper connecting terminal
Contact.
Second short circuit conductor is flake structure, and in two end heads of the second short circuit conductor second is respectively equipped with
Rank, so that two terminations of the second short circuit conductor can be respectively embedded in the corresponding through hole of substrate and corresponding upper connecting terminal
Contact with the gusset piece of corresponding moving contact part.
Outlet Connection Mode is that the second short circuit conductor is connected to into upper connecting terminal between level and level under the upper incoming line
And the gusset piece of moving contact part between, using the direction of current flow and the direction of current flow of moving contact of the second short circuit conductor
Conversely, so as to increase the repulsion between moving contact and static contact.
Compared with prior art, the beneficial effects of the utility model are：
1st, the series connection structure that this utility model is used as between breakpoint as a result of short circuit conductor and stopper, embedding by stopper
Put at the upper connecting terminal without external lead wire to form the isolation of corresponding upper connecting terminal and space outerpace；This practicality is new
This structure of type can realize that multibreak is connected on the basis of not causing small product size increase and its cost to increase.
2nd, this utility model as a result of U-shape first short circuit conductor and centre be provided with the elongate in shape of bending
Second short circuit conductor be used as short circuit conductor to be selectively attached between the adjacent upper connecting terminal of substrate back or on
Between binding post and the gusset piece of adjacent moving contact part so that same chopper can be enterprising in two kinds of modes of connection
Row conversion, and the characteristics of facilitate with conversion, when outlet method under using lower inlet wire due in the wiring of pedestal bottom, and under
Portion isolates, and has been effectively isolated the risk of user electric shock；When the outlet mode of connection under using upper incoming line, realize in concatenation multibreak
The effect of increase can also be got while mouth to the effect of disjunction.
This utility model is described in further detail below in conjunction with drawings and Examples；But one kind of the present utility model is more
Breakpoint dc circuit breaker is not limited to embodiment.
Description of the drawings
Fig. 1 is the front schematic view of embodiment this utility model (outlet Connection Mode under lower inlet wire) non-installing stopper；
Fig. 2 is the front schematic view of embodiment this utility model (outlet Connection Mode under lower inlet wire) installing stopper；
Fig. 3 is the back side signal that embodiment this utility model (outlet Connection Mode under lower inlet wire) does not install short circuit conductor
Figure；
Fig. 4 is the back side signal that embodiment this utility model (outlet Connection Mode under lower inlet wire) has installed short circuit conductor
Figure；
Fig. 5 is the organigram of embodiment base plate of the present utility model；
Fig. 6 is the organigram of embodiment stopper of the present utility model；
Fig. 7 is the organigram of embodiment stopper of the present utility model (upset one side)；
Fig. 8 is the organigram of embodiment the first short circuit conductor of the present utility model；
Fig. 9 is the front schematic view of embodiment this utility model (outlet Connection Mode under upper incoming line) non-installing stopper；
Figure 10 is the front schematic view of embodiment this utility model (outlet Connection Mode under upper incoming line) installing stopper；
Figure 11 is the back side signal that embodiment this utility model (outlet Connection Mode under upper incoming line) does not install short circuit conductor
Figure；
Figure 12 is the back side signal that embodiment this utility model (outlet Connection Mode under upper incoming line) has installed short circuit conductor
Figure；
Figure 13 is the organigram of embodiment the second short circuit conductor of the present utility model (two symmetrical)；
Figure 14 is the current direction schematic diagram of outlet Connection Mode under embodiment upper incoming line of the present utility model.
Specific embodiment
Embodiment
Referring to shown in Fig. 1 to Figure 13, a kind of multibreak dc circuit breaker of the present utility model, including pedestal 1, upper terminals
Son 2, lower connecting terminal 3 and moving contact part 4, static contact part 5 etc.；Upper connecting terminal 2, lower connecting terminal 3 and moving contact portion
Part 4, static contact part 5 be attached separately to the front of the substrate 11 of pedestal and carried out by the divider wall 12 of pedestal it is mutually isolated, than
As being accomplished by being isolated into arc-chutes using divider wall 12 at cooperation of the moving contact part 4 with static contact part 5, upper connecting terminal is made
2nd, formed between lower connecting terminal 3 and arc-chutes and isolated；The choppers such as tripping mechanism are also equipped with the front of the substrate 11 of pedestal
Part；In the present embodiment, upper connecting terminal 2, lower connecting terminal 3 are respectively four, upper connecting terminal 2 and corresponding static contact
Part 5 is connected, and moving contact part 4 is connected by the gusset piece 41 of moving contact part with corresponding lower connecting terminal 3；Institute
In stating substrate 11, through hole is additionally provided with the position corresponding to upper connecting terminal and the gusset piece of the moving contact part specified, so that
Upper connecting terminal and the specified gusset piece can be connected with the space outerpace of substrate back, in the present embodiment, in substrate 11
Corresponding to through hole 13 is provided with the position of upper connecting terminal, through hole 13 has four, corresponding to the moving contact specified in substrate 11
Through hole 14 is provided with the position of the gusset piece of part, through hole 14 is two, the position of the gusset piece of the moving contact part specified
Put and refer to that the position at two middle parts is not provided with by the position in two outsides in four positions；Chopper also includes the He of short circuit conductor 6
Stopper 7, the short circuit conductor 6 is connected between adjacent upper connecting terminal 2 or upper connecting terminal 2 and phase at the back side of substrate 11
Between the gusset piece 41 of adjacent moving contact part, the stopper 7 the front of substrate 11 be embedded in without external lead wire on connect
Line terminals sentence the isolation to form corresponding upper connecting terminal and space outerpace.
Short circuit conductor 6 includes that the first short circuit conductor 61 of U-shape is short with the second of the middle elongate in shape for being provided with bending
Conductor 62 is connect, the chopper selectively adopts the first short circuit conductor 61 to be connected between adjacent upper connecting terminal 2 with shape
The outlet Connection Mode under lower inlet wire, or upper connecting terminal 2 is connected to using the second short circuit conductor 62 dynamic touches with adjacent
With outlet Connection Mode under formation upper incoming line between the gusset piece 41 of head part.
As shown in Figures 1 to 4, chopper is outlet Connection Mode under lower inlet wire, is using two the first short circuit conductors 61
It is connected between adjacent upper connecting terminal 2, forms the chopper of two groups of concatenation breakpoints, the first short circuit conductor 61 is thin slice
Structure, in two end heads of the first short circuit conductor 61 first step 611 is respectively equipped with, so that the two of the first short circuit conductor 61
Individual termination can be respectively embedded in the corresponding through hole 13 of substrate 11 and be contacted with corresponding upper connecting terminal 2.Due on four
Binding post 2 is all used as concatenation point and uses, and four upper connecting terminals 2 belong to the upper connecting terminal 2 without external lead wire,
Therefore, fill at the installation cavity of the positive upper connecting terminal of substrate 11 to form four upper connecting terminals 2 with four stoppers 7
With the isolation of space outerpace.
The one side of stopper 7 is provided with nut slot 71, and nut slot 71 is embedded with the nut of correspondingly-shaped, stopper 7 with nut
The one side of groove rides on upper connecting terminal 2 to form the isolation of the upper connecting terminal 2 and space outerpace from the front of substrate 11；
The back side screw of substrate 11 through short circuit conductor be the first short circuit conductor 61 and upper connecting terminal 2 and with nut slot 71 in spiral shell
Cap spins and mutually fix so that be connected between the first short circuit conductor 61 and upper connecting terminal 2, at the two ends of the first short circuit conductor 61
After being connected with two adjacent upper connecting terminals 2 respectively, two breakpoints residing for two upper connecting terminals 2 are just serially connected in one
Rise.
This structure, inlet wire and outlet are all undertaken by lower connecting terminal 3, belong to outlet Connection Mode under lower inlet wire.
The back side of the substrate 11 of pedestal 1 is additionally provided with groove 15, and the short circuit conductor is that the first short circuit conductor 61 is contained in base
In the groove 15 at the back side of the substrate of seat.
Chopper also includes a base plate 8, and the base plate 8 is fixed on the back side of substrate 11 and is covered in the groove 15, from
And cause the first short circuit conductor 61 being contained in the groove 15 at the back side of substrate to form isolation with space outerpace.
Pedestal 1 is sealed up after base plate 8, and static contact and exposing for short circuit conductor are hedged off from the outer world by stopper and base plate；Improve
The safety that user uses.
As shown in Fig. 9 to Figure 12, chopper is outlet Connection Mode under upper incoming line.
When outlet Connection Mode under lower inlet wire to be converted to needs outlet Connection Mode under upper incoming line, the first short circuit is led
Body 61 is pulled down, and changes the second short circuit conductor 62, and replaces original static contact part, Pyromagnetic release part etc. as needed.
Because the lower outlet of outlet Connection Mode under upper incoming line only has two, therefore, the need two of lower connecting terminal 3.
Second short circuit conductor 62 is connected between upper connecting terminal 2 and the gusset piece 41 of adjacent moving contact part, the
Two short circuit conductors 62 are flake structure, and in two end heads of the second short circuit conductor 62 second step is respectively equipped with, wherein, it is close
The height dimension of second step 621 of the end of connection upper connecting terminal 2 is less, near the gusset piece 41 of connection moving contact part
End the height dimension of second step 622 it is larger so that two terminations of the second short circuit conductor 62 can be embedding respectively
Enter in the corresponding through hole of substrate 11 and contacted with the gusset piece 41 of corresponding upper connecting terminal 2 and corresponding moving contact part.The
Two short circuit conductors 62 are identical with the connected mode of outlet Connection Mode under above-mentioned lower inlet wire with the connected mode of upper connecting terminal 2,
Second short circuit conductor 62 is connected to be connected in and is directly mutually fixed using screw with the gusset piece 41 of corresponding moving contact part, and the structure is
By the moving contact component of a phase and adjacent static contact component phase short circuit, multibreak connected mode, and short circuit conductor Jing are realized
The static contact bottom of homophase is crossed, dynamic/static contact separate electrodynamic repulsion force can be also strengthened when disjunction, be conducive to disjunction arc extinguishing.
This utility model is using being to connect the second short circuit conductor 62 between level and level during outlet Connection Mode under upper incoming line
Be connected between the gusset piece of upper connecting terminal 2 and moving contact part 4, using the second short circuit conductor 62 direction of current flow with it is dynamic
The direction of current flow of contact is conversely, so as to increase the repulsion between moving contact and static contact.As shown in figure 14, the flow direction of electric current
It is to flow to the centre 512 of static contact 51 from two sides 511 of static contact 51 again Jing contacts flow to the moving contact of moving contact part 4
42, then short circuit conductor 62 is flowed to, therefore sense of current, it is that static contact side 511 is identical with moving contact 42,512 in the middle of static contact
It is identical with short circuit conductor 62；Moving contact 42 and static contact centre 512 are because of current direction conversely, generation between each comfortable two articles
Magnetic field is to be overlapped mutually, and the moving contact 42 and static contact 51 of convection current overcurrent produce outside power, show as repulsion, in the same manner,
Moving contact 42 is identical with two side of static contact, 511 electric currents, shows as suction；And short circuit conductor 62 and the sense of current of moving contact 42
It is contrary, short circuit conductor 62 also shows as repulsion to moving contact 42；Due to enhancing electrodynamic repulsion force, during disjunction,
Contact can be opened faster, and so as to be more beneficial for disjunction and the arc extinguishing of product, this utility model structure actually increases
One flows to the short circuit conductor 62 contrary with moving contact 42, enhances magnetic field, so as to increased electrodynamic repulsion force.
A kind of multibreak dc circuit breaker of the present utility model, employs short circuit conductor 6 and stopper 7 is used as between breakpoint
Series connection structure, by stopper 7 be embedded in the upper connecting terminal without external lead wire sentence to be formed corresponding upper connecting terminal with it is outer
The isolation in portion space；This structure of the present utility model can be on the basis of not causing small product size to increase and its cost increase
Realize that multibreak is connected.This utility model employs the first short circuit conductor 61 of U-shape and centre is provided with the strip of bending
Second short circuit conductor 62 of shape is used as short circuit conductor to be selectively attached to the adjacent upper connecting terminal 2 at the back side of substrate 11
Between or upper connecting terminal 2 and the gusset piece 41 of adjacent moving contact part between so that same chopper can be at two kinds
The characteristics of being changed in the mode of connection, and facilitated with conversion, when outlet method under using lower inlet wire due under pedestal
Portion's wiring, and lower isolation, have been effectively isolated the risk of user electric shock；When the outlet mode of connection under using upper incoming line,
The effect of increase can also be got to the effect of disjunction while concatenation realizes multi-break.
Above-mentioned simply preferred embodiment of the present utility model, not makees any pro forma restriction to this utility model.Though
So this utility model is disclosed above with preferred embodiment, but is not limited to this utility model.It is any to be familiar with this area
Technical staff, in the case of without departing from technical solutions of the utility model scope, all using the technology contents of the disclosure above
Technical solutions of the utility model are made with many possible variations and modification, or is revised as equivalents Equivalent embodiments.Therefore,
Every content without departing from technical solutions of the utility model, according to this utility model technical spirit to made for any of the above embodiments
What simple modification, equivalent variations and modification, all should fall in the range of technical solutions of the utility model protection.
Claims (9)
1. a kind of multibreak dc circuit breaker, including pedestal, upper and lower binding post and dynamic and static contact component；It is described upper and lower to connect
Line terminals and dynamic and static contact component are attached separately to the front of the substrate of pedestal and are carried out by the divider wall of pedestal mutually isolated；
It is characterized in that：In the substrate, corresponding at the position of upper connecting terminal and the gusset piece of moving contact part specified also
Through hole is provided with, so that upper connecting terminal and the specified gusset piece can be connected with the space outerpace of substrate back；Chopper
Also include short circuit conductor and stopper, the short circuit conductor the back side of substrate be connected between adjacent upper connecting terminal or on connect
Between line terminals and the gusset piece of adjacent moving contact part, the stopper is embedded in without external lead wire in the front of substrate
Upper connecting terminal sentences the isolation to form corresponding upper connecting terminal and space outerpace.
2. multibreak dc circuit breaker according to claim 1, it is characterised in that：The back side of the substrate of the pedestal also sets
Fluted, the short circuit conductor is contained in the groove at the back side of the substrate of pedestal.
3. multibreak dc circuit breaker according to claim 2, it is characterised in that：Further, it is described also including a base plate
Base plate is fixed on the back side of substrate and is covered in the groove, so that the short circuit being contained in the groove at the back side of substrate is led
Body forms isolation with space outerpace.
4. multibreak dc circuit breaker according to claim 1, it is characterised in that：The one side of the stopper is provided with nut
Groove, nut slot is embedded with the nut of correspondingly-shaped, and the one side with nut slot of stopper rides over upper terminals from the front of substrate
Forming the isolation of the upper connecting terminal and space outerpace on son；At the back side of substrate with screw through short circuit conductor and upper wiring
Terminal simultaneously spins and mutually fix with the nut in nut slot so that be connected between short circuit conductor and upper connecting terminal.
5. multibreak dc circuit breaker according to claim 1, it is characterised in that：The short circuit conductor is dynamic tactile with corresponding
The gusset piece of head part is connected to be connected in and is mutually fixed using screw.
6. the multibreak dc circuit breaker according to any claim in claim 1 to 5, it is characterised in that：It is described short
The second short circuit conductor that conductor is provided with the elongate in shape of bending including the first short circuit conductor of U-shape and centre is connect, it is described disconnected
Road device selectively adopts the first short circuit conductor to be connected between adjacent upper connecting terminal with outlet wiring under inlet wire under being formed
Pattern, or adopt the second short circuit conductor to be connected between upper connecting terminal and the gusset piece of adjacent moving contact part with shape
The outlet Connection Mode under upper incoming line.
7. multibreak dc circuit breaker according to claim 6, it is characterised in that：First short circuit conductor is thin slice knot
Structure, in two end heads of the first short circuit conductor first step is respectively equipped with, so that two termination energy of the first short circuit conductor
Enough it is respectively embedded in the corresponding through hole of substrate and is contacted with corresponding upper connecting terminal.
8. multibreak dc circuit breaker according to claim 6, it is characterised in that：Second short circuit conductor is thin slice knot
Structure, in two end heads of the second short circuit conductor second step is respectively equipped with, so that two termination energy of the second short circuit conductor
Enough it is respectively embedded in the corresponding through hole of substrate and is contacted with the gusset piece of corresponding upper connecting terminal and corresponding moving contact part.
9. multibreak dc circuit breaker according to claim 6, it is characterised in that：Outlet Connection Mode under the upper incoming line
It is that the second short circuit conductor is connected between upper connecting terminal and the gusset piece of moving contact part between level and level, utilizes second
The direction of current flow of short circuit conductor and the direction of current flow of moving contact are conversely, so as to increase between moving contact and static contact
Repulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211953.3U CN206179809U (en) | 2016-11-10 | 2016-11-10 | Multiple breakpoint direct current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211953.3U CN206179809U (en) | 2016-11-10 | 2016-11-10 | Multiple breakpoint direct current breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206179809U true CN206179809U (en) | 2017-05-17 |
Family
ID=58684407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621211953.3U Active CN206179809U (en) | 2016-11-10 | 2016-11-10 | Multiple breakpoint direct current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206179809U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548908A (en) * | 2016-11-10 | 2017-03-29 | 厦门宏发开关设备有限公司 | A kind of multibreak dc circuit breaker |
| CN108233330A (en) * | 2018-01-12 | 2018-06-29 | 许继电气股份有限公司 | A kind of dc circuit breaker switch module and dc circuit breaker |
-
2016
- 2016-11-10 CN CN201621211953.3U patent/CN206179809U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548908A (en) * | 2016-11-10 | 2017-03-29 | 厦门宏发开关设备有限公司 | A kind of multibreak dc circuit breaker |
| CN108233330A (en) * | 2018-01-12 | 2018-06-29 | 许继电气股份有限公司 | A kind of dc circuit breaker switch module and dc circuit breaker |
| CN108233330B (en) * | 2018-01-12 | 2019-06-21 | 许继电气股份有限公司 | A kind of dc circuit breaker switch block and dc circuit breaker |
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