CN107230586A - A kind of miniature circuit breaker structure-improved - Google Patents
A kind of miniature circuit breaker structure-improved Download PDFInfo
- Publication number
- CN107230586A CN107230586A CN201610283926.5A CN201610283926A CN107230586A CN 107230586 A CN107230586 A CN 107230586A CN 201610283926 A CN201610283926 A CN 201610283926A CN 107230586 A CN107230586 A CN 107230586A
- Authority
- CN
- China
- Prior art keywords
- plate
- circuit breaker
- arc
- improved
- miniature circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of miniature circuit breaker structure-improved; it includes housing (1); end of incoming cables mechanism (2), leading-out terminal mechanism (3), operating mechanism (4), arc-extinguishing mechanism (5), short current protective mechanism (6); overload protecting mechanism (7) and electricity-fetching mechanism (8); a kind of miniature circuit breaker structure-improved that the present invention is provided; again it is laid out the internal mechanism of whole breaker; the miniature circuit breaker volume of 125 peace frame sizes is set significantly to reduce; the width control system of monopole product effectively saves installing space within 18mm.
Description
Technical field
The invention belongs to breaker technical field, it is exactly specifically to be related to a kind of miniature circuit breaker structure-improved, can effectively reduces breaker volume.
Background technology
Breaker is divided into primary cut-out and low-voltage circuit breaker by it using scope.Low-voltage circuit breaker is also known as automatic switch, is commonly called as " air switch " and also refers to low-voltage circuit breaker, and it is a kind of existing hand switch effect, can carry out the electrical equipment of decompression, under-voltage, overload and short-circuit protection automatically again.It can be used to distribute electric energy; infrequently start asynchronous motor; power circuit and motor etc. are carried out and protected; when they occur serious overloads or can automatic shutdown circuit during the failure such as short-circuit and under-voltage; its function is equivalent to Fuse switch and the combination for crossing underheat relay etc.; and it is latter in disjunction fault current as need not change parts, obtained a wide range of applications.
The use of breaker can effectively improve the security that electric equipment uses industry, with breaker widely using on various electric equipments, in order to meet the installation needs of various different electric equipments, the structure of breaker also develops into of all kinds, the conventional small circuit breaker volume of existing 125 peace frame size is larger at present, the space taken during installation is larger, and the width of monopole product is generally more than 18mm.With the development for the electric equipment technology that breaker is matched, in some occasions higher to requirements of installation space, it is impossible to meet and require.
The content of the invention
The purpose of the present invention is aiming at the larger defect of the conventional small circuit breaker volume of existing 125 peace frame sizes, a kind of miniature circuit breaker structure-improved is provided, again it is laid out the internal mechanism of whole breaker, the miniature circuit breaker volume of 125A frame sizes is set significantly to reduce, the width control system of monopole product effectively saves installing space within 18mm.
Technical scheme
In order to realize above-mentioned technical purpose, a kind of miniature circuit breaker structure-improved that the present invention is provided, it includes housing, end of incoming cables mechanism, leading-out terminal mechanism, operating mechanism, arc-extinguishing mechanism, short current protective mechanism, overload protecting mechanism and electricity-fetching mechanism, it is characterised in that：The leading-out terminal mechanism and end of incoming cables mechanism are separately mounted to the left and right sides of housing; operating mechanism is connected installed in housing upper right quarter with overload protecting mechanism; overload protecting mechanism is located at the lower section of operating mechanism and the left side of end of incoming cables mechanism; operating mechanism is also connected with arc extinguishing structure; arc extinguishing structure is arranged on housing bottom position and is located on the left of overload protecting mechanism; short current protective mechanism is located at arc extinguishing structure top and the lower section of operating mechanism handle and is connected with leading-out terminal mechanism, and electricity-fetching mechanism is arranged on the left and right sides of housing.
Further; the short current protective mechanism includes conductive plate; the conductive plate and yoke are fitted together; by the way that yoke can be made to produce magnetic field during variable-current in conductive plate; armature is provided with above yoke; the magnetic fields that armature is produced by yoke can be rotated around armature shaft, and armature, which is connected with back-moving spring, to reset it, and lock solution lock section is provided with the armature.
Further, described back-moving spring one end is in the mounting hole of armature, and the other end is in the hanging hole of spring pendant, and spring pendant is in case for circuit breaker.
Further, the conductive plate and breaker outgoing line end are integral type, and conductive plate is on case for circuit breaker.
Further, the yoke is U-shaped, and the bottom of yoke is located at below conductive plate, and conductive plate is passed through from yoke 62U shape grooves.
Further, the armature shaft passes through the axis hole on armature on case for circuit breaker.
Further, the arc blow-out mechanism of the arc extinguishing structure includes cover arc plate, cavity is set in the cover arc plate, run-on tab is inserted into two ends in cavity and stretches out cavity, the cover arc plate be provided with the first mounting groove, combined magnetic plate from leading flank be inserted into the first mounting groove in magnetic field can be induced by the electric current changed in run-on tab；
The cover arc plate is provided with slotted eye mouthful, the contact end of moving contact puts in cavity from slotted eye mouthful, the contact end of static contact is corresponding with the contact end of moving contact in the second mounting groove of cover arc plate, magnetic conductive board from leading flank be inserted into the 3rd mounting groove of cover arc plate in the electric current that can change in the wire guide plate by static contact induce magnetic field.
Further, the run-on tab is provided with arc arc leading angle, and arc arc leading angle stretches out from the clearance opening of cover arc plate to be connected with breaker end of incoming cables.
Further, the cover arc plate is assembled by left cover arc plate and right cover arc plate.
Further, the combined magnetic plate includes left plate and right plate, and left plate and right plate are linked together by bottom plate, and left plate and right plate are inserted into the left groove and right groove of the first mounting groove respectively.
Further, the magnetic conductive board is U-board, and two sides are inserted into the 3rd mounting groove and the contact end of static contact is fixed in the second mounting groove, and the second mounting groove is connected with slotted eye mouthful, and the contact end of moving contact moves contact end in contact that can be with static contact in cavity.
Further, the cover arc plate makes for gas exhausted material.
Further, the conductive plate and static contact are integral type.
Beneficial effect
A kind of miniature circuit breaker structure-improved that the present invention is provided, is laid out the internal mechanism of whole breaker again, the miniature circuit breaker volume of 125 peace frame sizes is significantly reduced, and the width control system of monopole product effectively saves installing space within 18mm.
Brief description of the drawings
Accompanying drawing 1 is the interior layout structure chart of the embodiment of the present invention.
Accompanying drawing 2 is short current protective mechanism schematic diagram in the embodiment of the present invention.
Accompanying drawing 3 is short current protective mechanism main view direction schematic diagram of the embodiment of the present invention.
Accompanying drawing 4 is conductive plate structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 5 is magnetic yoke structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 6 is armature structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 7 is spring hanger structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 8 is the structural representation of arc blow-out mechanism in the embodiment of the present invention.
Accompanying drawing 9 is the decomposition texture schematic diagram of arc blow-out mechanism in the embodiment of the present invention.
Accompanying drawing 10 is run-on tab mounting structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 11 is striking plate structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 12 is cover arc plate decomposition texture schematic diagram of the embodiment of the present invention.
Accompanying drawing 13 is magnetic conduction plate structure schematic diagram of the embodiment of the present invention.
Accompanying drawing 14 is arc blow-out of embodiment of the present invention mechanism operating diagram.
Accompanying drawing 15 is product schematic diagram of the embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in accompanying drawing 1 and 15, a kind of miniature circuit breaker structure-improved, it includes housing 1, end of incoming cables mechanism 2, leading-out terminal mechanism 3, operating mechanism 4, arc-extinguishing mechanism 5, short current protective mechanism 6, overload protecting mechanism 7 and electricity-fetching mechanism 8, 8 ', wherein, the leading-out terminal mechanism 3 and end of incoming cables mechanism 2 are separately mounted to the left and right sides of housing 1, operating mechanism 4 is connected installed in the upper right quarter of housing 1 with overload protecting mechanism 7, overload protecting mechanism 7 is located at the lower section of operating mechanism 4 and the left side of end of incoming cables mechanism 2, operating mechanism 4 is also connected with arc extinguishing structure 5, arc extinguishing structure 5 is arranged on the bottom position of housing 1 and is located at the left side of overload protecting mechanism 7, short current protective mechanism 6 is located at the top of arc extinguishing structure 5 and the lower section of the handle of operating mechanism 4 and is connected with leading-out terminal mechanism 3, electricity-fetching mechanism 8, 8 ' are arranged on the left and right sides of housing 1.
As shown in Figures 2 and 3; the short current protective mechanism 6 includes electric-conductor 61; the electric-conductor 61 and yoke 62 are fitted together; by the way that yoke 62 can be made to produce magnetic field during variable-current in electric-conductor 61; the top of yoke 62 is provided with armature 63; the magnetic fields that armature 63 is produced by yoke 62 can be rotated around armature shaft 64, and the armature shaft 64 is on case for circuit breaker through the axis hole on armature 63.Armature 63, which is connected with back-moving spring 65, to reset it, and lock solution lock section 6301 is provided with the armature 63.
Described one end of back-moving spring 65 is mounted in the mounting hole such as the armature 63 of accompanying drawing 6, and the other end is in the hanging hole of spring pendant 66 as shown in Figure 7, and spring pendant 66 is in case for circuit breaker.
As shown in Figure 4, the conductive plate 61 and breaker outgoing line end are integral type, and conductive plate 61 is on case for circuit breaker.
As shown in Figure 5, the yoke 62 is U-shaped, and the bottom of yoke 62 is located at the lower section of conductive plate 61, and conductive plate 61 is passed through from yoke 62U shape grooves.
Such as accompanying drawing 8, shown in 9 and 10, the arc blow-out mechanism of the arc extinguishing structure 5 includes cover arc plate 51, cavity 5101 is set in the cover arc plate 51, run-on tab 52 is inserted into two ends in cavity 5101 and stretches out cavity 5101, the cover arc plate 51 is provided with the first mounting groove 5102, and combined magnetic plate 53 is inserted into the first mounting groove 102 from leading flank to induce magnetic field by the electric current changed in run-on tab 52；The combined magnetic plate 53 includes left plate 5301 and right plate 5302, and left plate 5301 and right plate 5302 are linked together by bottom plate 5303, and left plate 5301 and right plate 5302 are inserted into the left groove 5102a and right groove 5102b of the first mounting groove 5102 respectively.The cover arc plate 51 is provided with slotted eye mouthful 5103, the contact end 5401 of moving contact 54 puts in cavity 5101 from slotted eye mouthful 5103, the contact end 5501 of static contact 55 is corresponding with the contact end 5401 of moving contact 54 in the second mounting groove 5104 of cover arc plate 51, and magnetic conductive board 56 is inserted into the 3rd mounting groove 5105 of cover arc plate 51 from leading flank to induce magnetic field by the electric current changed in the wire guide plate of static contact 55.As shown in Figure 13, the magnetic conductive board 56 is U-board, two sides are inserted into the 3rd mounting groove 5105 and the contact end 5501 of static contact 55 are fixed in the second mounting groove 5104, second mounting groove 5104 is connected with slotted eye mouthful 5103, and the contact end 5401 of moving contact 54 can be contacted in the motion of cavity 5101 with the contact end 5501 of static contact 55.As shown in Figure 11, the run-on tab 52 is provided with arc arc leading angle 5201, and arc arc leading angle 5201 stretches out from the clearance opening 5106 of cover arc plate 51 to be connected with breaker end of incoming cables 75.As shown in Figure 12, the cover arc plate 51 is assembled by left cover arc plate 5202 and right cover arc plate 5203.
The cover arc plate 51 makes for gas exhausted material.The electric arc produced as shown in Figure 14 in breaker fragmentation procedure is moved along striking angular direction, electric arc is moved to arc-chutes direction, is accelerated arc motion speed, electric arc is more rapidly extinguished.Moving contact and static contact are moved between cavity 5101, and the electric arc that breaker segmentation is produced can only be moved in cavity 5101.Cover arc plate 51 is that gas exhausted material makes, when breaker produces electric arc, and cover arc plate 51 produces gas under the high temperature action of electric arc, and electric arc locally produces high pressure, promotes electric arc to be moved to the relatively low arc-chutes direction of air pressure.Electric arc ambient gas is moved, and takes away electric arc amount of heat, electric arc is more easy to extinguishing.When acting as breaker disjunction of magnetic conduction sheet, produces electric arc, when electric arc is between dynamic/static contact, and the electric current that static contact leading portion wire guide plate is produced makes to produce larger magnetic field in the magnetic conduction sheet short time, and electric arc is moved in the presence of the magnetic field of generation to arc-chutes direction.The effect of combined magnetic piece is that the electric current that arc leading angle is produced makes combined magnetic piece also produce larger magnetic field between static contact in arc motion to arc arc leading angle 5201, makes electric arc accelerate to move to arc-chutes under the magnetic field collective effect produced with magnetic conduction sheet.
Above-mentioned conductive plate (61) and static contact (55) are integral type.
Structure, ratio, size depicted in the present embodiment institute accompanying drawings etc., only to coordinate the content disclosed in specification, so that those skilled in the art is understood with reading, it is not limited to enforceable qualifications of the invention, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, in the case where not influenceing effect of the invention that can be generated and the purpose that can reach, all should still it fall in the range of disclosed technology contents are obtained and can covered.Simultaneously, cited such as " on ", " under ", "left", "right", " centre ", " clockwise ", the term of " counterclockwise " in this specification, it is merely convenient to understanding for narration, and be not used to limit enforceable scope of the invention, its relativeness is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
Claims (13)
1. a kind of miniature circuit breaker structure-improved, it includes housing (1), end of incoming cables mechanism (2), leading-out terminal
Mechanism (3), operating mechanism (4), arc-extinguishing mechanism (5), short current protective mechanism (6), overload protecting mechanism (7) and
Electricity-fetching mechanism (8), it is characterised in that：The leading-out terminal mechanism (3) and end of incoming cables mechanism (2) are separately mounted to shell
The left and right sides of body (1), operating mechanism (4) is connected installed in housing (1) upper right quarter with overload protecting mechanism (7)
Connect, overload protecting mechanism (7) is located at the lower section of operating mechanism (4) and the left side of end of incoming cables mechanism (2), operation
Mechanism (4) is also connected with arc extinguishing structure (5), and arc extinguishing structure (5) was located at installed in housing (1) bottom position
Carry on the left of protection mechanism (7), short current protective mechanism (6) is located above arc extinguishing structure (5) and operating mechanism (4)
(3 are connected, and electricity-fetching mechanism (8,8 ') is arranged on the left and right two of housing (1) with leading-out terminal mechanism for the lower section of handle
Side.
2. a kind of miniature circuit breaker structure-improved as claimed in claim 1, it is characterised in that：The short circuit
Protection mechanism 6 includes conductive plate (61), and the conductive plate (61) and yoke (62) are fitted together, conductive plate (61)
In be provided with armature (63) by the way that yoke (62) can be made to produce magnetic field during variable-current, above yoke (62),
The magnetic fields that armature (63) is produced by yoke (62) can be rotated around armature shaft (64), and armature (63) is connected with
Back-moving spring (65) can reset it, and lock solution lock section (6301) is provided with the armature (63).
3. a kind of miniature circuit breaker structure-improved as claimed in claim 2, it is characterised in that：It is described to reset
Spring (65) one end is in the mounting hole of armature (63), and the other end is mounted in the hanging hole of spring pendant (66),
Spring pendant (66) is in case for circuit breaker.
4. a kind of miniature circuit breaker structure-improved as claimed in claim 2, it is characterised in that：The conduction
Plate (61) is integral type with breaker outgoing line end, and conductive plate (61) is on case for circuit breaker.
5. a kind of miniature circuit breaker structure-improved as claimed in claim 2, it is characterised in that：The yoke
(62) it is U-shaped, the bottom of yoke (62) is located at below conductive plate (61), conductive plate (61) is from yoke (62) U-shaped
Passed through in groove.
6. a kind of miniature circuit breaker structure-improved as claimed in claim 2, it is characterised in that：The armature
Axle (64) is on case for circuit breaker through the axis hole on armature (63).
7. a kind of miniature circuit breaker structure-improved as claimed in claim 1, it is characterised in that：The arc extinguishing
The arc blow-out mechanism of structure (5) includes setting cavity (5101), run-on tab in cover arc plate (51), the cover arc plate (51)
(52) the interior two ends of cavity (5101) are inserted into and stretch out cavity (5101), the cover arc plate (51) is installed provided with first
Groove (5102), combined magnetic plate (53) is inserted into from leading flank can be by run-on tab in the first mounting groove (102)
(52) electric current of change induces magnetic field in；
The cover arc plate (51) is provided with slotted eye mouthful (5103), and the contact end (5401) of moving contact (54) is from slotted eye
Mouth (5103) puts in cavity (5101), and the contact end (5501) of static contact (55) is mounted in the second of cover arc plate (51)
Corresponding with the contact end (5401) of moving contact (54) in mounting groove (5104), magnetic conductive board (56) is inserted from leading flank
In the 3rd mounting groove (5105) of cover arc plate (51) can by the wire guide plate of static contact (55) in the electric current that changes
Induce magnetic field.
8. a kind of miniature circuit breaker structure-improved as claimed in claim 7, it is characterised in that:The striking
Plate (52) is provided with arc arc leading angle (5201), clearance opening (5106) of the arc arc leading angle (5201) from cover arc plate (51)
Middle stretching is connected with breaker end of incoming cables (75).
9. a kind of miniature circuit breaker structure-improved as claimed in claim 7, it is characterised in that:The cover arc
Plate (51) is assembled by left cover arc plate (5202) and right cover arc plate (5203).
10. a kind of miniature circuit breaker structure-improved as claimed in claim 7, it is characterised in that:The combination
Magnetic conductive board (53) includes left plate (5301) and right plate (5302), left plate (5301) and right plate (5302)
Linked together by bottom plate (5303), left plate (5301) and right plate (5302) are inserted into the first peace respectively
In the left groove (5102a) and right groove (5102b) of tankage (5102).
11. a kind of miniature circuit breaker structure-improved as claimed in claim 7, it is characterised in that:The magnetic conduction
Plate (56) is U-board, and two sides are inserted into the contact end of static contact (55) in the 3rd mounting groove (5105)
(5501) it is fixed in the second mounting groove (5104), the second mounting groove (5104) is connected with slotted eye mouthful (5103),
The contact end (5401) of moving contact (54) moves contact end that can be with static contact (55) in cavity (5101)
(5501) contact.
12. a kind of miniature circuit breaker structure-improved as claimed in claim 7, it is characterised in that:The cover arc
Plate (51) makes for gas exhausted material.
13. a kind of miniature circuit breaker structure-improved as described in claim 2 and 7, it is characterised in that:It is described
Conductive plate (61) and static contact (55) are integral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283926.5A CN107230586A (en) | 2016-04-29 | 2016-04-29 | A kind of miniature circuit breaker structure-improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283926.5A CN107230586A (en) | 2016-04-29 | 2016-04-29 | A kind of miniature circuit breaker structure-improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107230586A true CN107230586A (en) | 2017-10-03 |
Family
ID=59932842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610283926.5A Pending CN107230586A (en) | 2016-04-29 | 2016-04-29 | A kind of miniature circuit breaker structure-improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107230586A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993900A (en) * | 2017-10-26 | 2018-05-04 | 上海良信电器股份有限公司 | A kind of plug-in type miniature circuit breaker |
| CN109599303A (en) * | 2018-12-28 | 2019-04-09 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109637907A (en) * | 2018-12-28 | 2019-04-16 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN110071022A (en) * | 2019-05-14 | 2019-07-30 | 浙江创奇电气有限公司 | A kind of compact-sized miniature circuit breaker |
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| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN202616161U (en) * | 2012-06-07 | 2012-12-19 | 江苏普华力拓电器股份有限公司 | Electromagnetic trip for small-sized circuit breaker |
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| CN203966999U (en) * | 2014-08-04 | 2014-11-26 | 浙江人民电器有限公司 | A kind of miniature circuit breaker |
| CN204011328U (en) * | 2014-07-31 | 2014-12-10 | 浙江天正电气股份有限公司 | A kind of miniature circuit breaker with magnetic conductive board |
| KR20150053610A (en) * | 2013-11-08 | 2015-05-18 | 엘에스산전 주식회사 | Circuit breaker |
| CN206040553U (en) * | 2016-04-29 | 2017-03-22 | 上海良信电器股份有限公司 | Miniature circuit breaker improves structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN202616161U (en) * | 2012-06-07 | 2012-12-19 | 江苏普华力拓电器股份有限公司 | Electromagnetic trip for small-sized circuit breaker |
| CN103441046A (en) * | 2013-08-13 | 2013-12-11 | 常熟开关制造有限公司(原常熟开关厂） | Magnetic releaser of breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993900A (en) * | 2017-10-26 | 2018-05-04 | 上海良信电器股份有限公司 | A kind of plug-in type miniature circuit breaker |
| CN107993900B (en) * | 2017-10-26 | 2023-12-12 | 上海良信电器股份有限公司 | Plug-in miniature circuit breaker |
| CN109599303A (en) * | 2018-12-28 | 2019-04-09 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109637907A (en) * | 2018-12-28 | 2019-04-16 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109599303B (en) * | 2018-12-28 | 2023-10-24 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| CN109637907B (en) * | 2018-12-28 | 2024-05-14 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| CN110071022A (en) * | 2019-05-14 | 2019-07-30 | 浙江创奇电气有限公司 | A kind of compact-sized miniature circuit breaker |
| CN110071022B (en) * | 2019-05-14 | 2023-11-07 | 浙江创奇电气有限公司 | Compact structure's miniature circuit breaker |
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Application publication date: 20171003 |
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| RJ01 | Rejection of invention patent application after publication |