CN113192798B - Electronic type and thermomagnetic type release structure for universal installation of molded case circuit breaker - Google Patents
Electronic type and thermomagnetic type release structure for universal installation of molded case circuit breaker Download PDFInfo
- Publication number
- CN113192798B CN113192798B CN202110168497.8A CN202110168497A CN113192798B CN 113192798 B CN113192798 B CN 113192798B CN 202110168497 A CN202110168497 A CN 202110168497A CN 113192798 B CN113192798 B CN 113192798B
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- Prior art keywords
- bracket
- release
- circuit breaker
- electronic
- molded case
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- 238000009434 installation Methods 0.000 title claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- 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
Landscapes
- Breakers (AREA)
Abstract
The invention provides a release structure for universal installation of electronic and thermo-magnetic molded case circuit breakers, which comprises: the tripping device body is detachably installed on the circuit breaker and is provided with a circuit board assembly arranged on the circuit breaker, and a plurality of groups of backup protection assemblies and current transformers which are arranged below and correspond to the contact assemblies of each phase. Because the release body can be integrally and detachably arranged on the circuit breaker, the release body is more rapid and convenient to assemble and disassemble, and the release can be independently tested before the release and the circuit breaker are assembled, so that the testing efficiency is greatly improved; in addition, both the electronic type and the thermomagnetic type adopt the same release structure, so that production and inventory costs are reduced for manufacturers.
Description
Technical Field
The invention relates to the technical field of molded case circuit breakers, in particular to a release structure for universal installation of electronic and thermo-magnetic molded case circuit breakers.
Background
The molded case circuit breaker is used as an overload, undervoltage and short-circuit protection electric appliance of a low-voltage distribution system and a load protection loop, when abnormal current occurs to a circuit, a tripping device of the circuit breaker can generate tripping action to cut off the circuit, so that load equipment and various components in the circuit system are protected from damage.
All parts of the existing electronic and thermomagnetic molded case circuit breaker release are fixed on the circuit breaker base in a dispersing mode, so that the assembly process is complex, in addition, the release can be tested only after the release is assembled on the circuit breaker, and therefore, the release can be disassembled and assembled again only after the release is unqualified in the test, and the cost is increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of complex assembly process and high production cost of the release in the prior art, thereby providing the release structure for the universal installation of the electronic and thermo-magnetic molded case circuit breaker, which has the advantages of simple structure and rapid and convenient assembly.
Therefore, the invention provides a release structure for general installation of electronic and thermo-magnetic molded case circuit breakers, comprising: the tripping device body is detachably installed on the circuit breaker and is provided with a circuit board assembly arranged on the circuit breaker, and a plurality of groups of backup protection assemblies and current transformers which are arranged below and correspond to the contact assemblies of each phase.
The release body is assembled with the circuit breaker through an inserting structure, and the inserting structure comprises a slot arranged on one side of the release body and the circuit breaker and an inserting block arranged on the other side and inserted into the slot correspondingly.
The release body is provided with a release panel, a first bracket and a second bracket, wherein the release panel, the first bracket is suitable for installing the circuit board assembly, and the second bracket is suitable for installing a plurality of groups of backup protection assemblies and current transformers, which are sequentially arranged from top to bottom.
The release panel is assembled with the first support through a first hook structure, and the first hook structure comprises a first hanging hole formed in one side of the release panel and the first support, and a first elastic hook formed in the other side of the release panel and connected with the first hanging hole in a hooking mode.
The first support is assembled with the second support through a second hook structure, and the second hook structure comprises a second hanging hole formed in one side of the first support and the second support, and a second elastic hook which is arranged in the other side and connected with the second hanging hole in a hooking mode.
The second bracket is provided with a magnetic ring of the current transformer arranged in the second bracket and a conductive connecting piece penetrating through a through hole in the middle of the magnetic ring, and one end of the conductive connecting piece is fixedly provided with the backup protection component.
The backup protection assembly comprises an armature bracket, a movable armature and a torsion spring, wherein the armature bracket is fixed at one end of the conductive connecting piece; the movable armature is rotatably arranged on the armature bracket through a rotating shaft and is arranged adjacent to the magnetic ring, and the movable armature is provided with a driving rod which is linked with the movable armature and can drive the traction rod to act, wherein the movable armature acts towards the tripping position under the action of the magnetic field force of the magnetic ring when in short circuit; and the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is propped against the armature bracket, and the other end of the torsion spring is propped against the movable armature.
The armature support comprises a first mounting plate which is horizontally arranged and fixedly connected with the conductive connecting piece, and a second mounting plate which is vertically arranged with the first mounting plate, wherein the second mounting plate is respectively in limit connection with the first support and the circuit breaker through a first limit structure and a second limit structure.
The first limiting structure comprises a first limiting groove arranged at the bottom of the first support and a first limiting block arranged at the top of the second mounting plate and in limiting connection with the first limiting groove.
The second limiting structure comprises second limiting blocks arranged on two sides of the second mounting plate and second limiting grooves which are arranged on the circuit breaker and correspondingly connected with the second limiting blocks.
The first support and the second support are respectively provided with a first step and a second step which are correspondingly abutted against the top surface and the bottom surface of the magnetic ring.
The second support is provided with a partition plate arranged between two adjacent groups of the multi-group backup protection components and the current transformer.
The technical scheme of the invention has the following advantages:
1. According to the release structure, as the release body can be integrally and detachably arranged on the circuit breaker, the release body is more rapid and convenient to assemble and disassemble, and the release can be independently tested before the release and the circuit breaker are assembled, so that the testing efficiency is greatly improved; in addition, both the electronic type and the thermomagnetic type adopt the release structure, so that production and inventory costs are reduced for manufacturers.
2. According to the release structure provided by the invention, the release body is assembled with the circuit breaker through the plug-in structure, the plug-in structure comprises the slot arranged on one side of the release body and the circuit breaker and the plug block arranged on the other side and correspondingly plugged with the slot, and the plug block and the slot which are matched with each other have the advantages of simple structure and rapidness and convenience in assembly.
3. According to the release structure provided by the invention, the release panel is assembled with the first bracket through the first hook structure, the first bracket is assembled with the second bracket through the second hook structure, and the elastic hooks are connected with the hook holes in a hooking manner, so that the release structure has the advantages of simple structure and rapidness and convenience in assembly and disassembly, and screw-free assembly is realized.
4. According to the release structure, the backup protection assembly comprises the armature support, the movable armature and the torsion spring, and the movable armature is arranged adjacent to the magnetic ring, wherein when the magnetic release structure is in short circuit, the current passing through the magnetic ring can be increased instantaneously, the acting force of the magnetic ring on the movable armature is larger than the acting force of the torsion spring on the movable armature, so that the movable armature acts towards the release position direction, the way that a magnetic yoke for generating magnetic force is required to be arranged on the armature support in the prior art is omitted, the structure is simpler, and the production cost is reduced.
5. According to the release structure provided by the invention, the first limiting block extending into the first limiting groove at the bottom of the first bracket and the second limiting block extending into the second limiting groove of the circuit breaker are arranged on the second mounting plate of the armature bracket, and the limiting blocks are arranged on the two sides and the top of the second mounting plate, so that the second mounting plate can be prevented from being deformed by the acting force of the torsion spring, and the reliability is improved.
6. According to the release structure provided by the invention, the first support and the second support are respectively provided with the first step and the second step which are correspondingly abutted against the top surface and the bottom surface of the magnetic ring, so that the magnetic ring is more convenient to position and install.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a circuit breaker of the present invention;
fig. 2 is an exploded schematic view of the circuit breaker and trip unit body of fig. 1;
FIG. 3 is an assembled schematic diagram of a trip unit body and a circuit breaker base;
Fig. 4 is a schematic diagram of an assembly of a second bracket, armature bracket and circuit breaker base
FIG. 5 is an enlarged schematic view of the portion A of FIG. 4;
FIG. 6 is a first perspective view of the trip unit body;
FIG. 7 is a second perspective view of the trip body;
FIG. 8 is a side view of the trip body;
FIG. 9 is a cross-sectional view of the trip body;
FIG. 10 is an exploded schematic view of the trip unit body;
FIG. 11 is an exploded view of the backup protection assembly, magnetic ring and conductive connection;
Fig. 12 is a perspective view of the armature bracket.
Reference numerals illustrate: 1. a trip body; 11. inserting blocks; 2. a circuit breaker; 21. a slot; 22. the second limit groove; 3. a trip panel; 31. a first hanging hole; 4. a first bracket; 41. a first elastic hook; 42. a second hanging hole; 43. a first limit groove; 44. a first step; 5. a second bracket; 51. a second elastic hook; 52. a second step; 53. a partition plate; 6. a magnetic ring; 7. a conductive connection; 8. an armature bracket; 81. a first mounting plate; 82. a second mounting plate; 83. a first limiting block; 84. a second limiting block; 9. a moving armature; 90. a rotating shaft; 91. and a driving rod.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Examples
The present embodiment provides a release structure for general installation of electronic and thermo-magnetic molded case circuit breakers, as shown in fig. 1-3, a release body 1 is detachably installed on a circuit breaker 2, and has a circuit board assembly arranged on the upper side, and a plurality of groups of backup protection assemblies and current transformers corresponding to contact assemblies of each phase arranged below.
The circuit breaker 2, as shown in fig. 4 and 5, comprises a cover plate and a base which are buckled up and down, wherein the base is provided with a mounting cavity for mounting the release body 1, a slot 21 and a second limit slot 22.
The trip unit body 1, as shown in fig. 6, 7 and 10, is provided with a trip unit panel 3, a first bracket 4 suitable for mounting the circuit board assembly and a second bracket 5 suitable for mounting a plurality of groups of backup protection assemblies and the current transformer, which are arranged in sequence from top to bottom.
The release panel 3, its top can be used to install sign, button or display screen, and the both sides bottom of release panel 3 length direction is equipped with first hanging hole 31.
The first support 4, its top is equipped with the first elastic hook 41 that is connected with first hanging hole 31 hook, and its bottom both sides are equipped with second hanging hole 42, and first support 4 encloses with release panel 3 and closes the installation cavity that forms and be suitable for installing the circuit board subassembly, and the circuit board subassembly is connected with the current transformer electricity, and the bottom of first support 4 still is equipped with first spacing groove 43.
The top of the second bracket 5 is provided with a second elastic hook 51 in hooking connection with the second hanging hole 42, the second bracket 5 is provided with a partition plate 53 arranged between two adjacent groups of backup protection components and the current transformer, and the front side and the rear side of the partition plate 53 are provided with plug blocks 11 which are correspondingly plugged with the slots 21 of the circuit breaker 2. As shown in fig. 8, the first bracket 4 and the second bracket 5 are respectively formed with a first step 44 and a second step 52 that respectively abut against the top surface and the bottom surface of the magnetic ring 6. The second bracket 5 is provided with a magnetic ring 6 of the current transformer arranged in the magnetic ring and a conductive connecting piece 7 penetrating through a through hole in the middle of the magnetic ring 6, one end of the conductive connecting piece 7 is fixedly provided with the backup protection component, the other end of the conductive connecting piece is assembled with the circuit breaker through a rivet or a screw, and in the embodiment, the current transformer is a penetrating current transformer.
The backup protection assembly comprises: an armature bracket 8, a moving armature 9 and a torsion spring (not shown).
The armature bracket 8 is fixed at one end of the conductive connecting piece 7, as shown in fig. 9, 11 and 12, the armature bracket 8 comprises a first mounting plate 81 horizontally arranged and fixedly connected with the conductive connecting piece 7, and a second mounting plate 82 vertically arranged with the first mounting plate 81, two sides of the second mounting plate 82 are provided with second limiting blocks 84 in limiting connection with the second limiting grooves 22 of the circuit breaker 2, and the top of the second mounting plate 82 is provided with first limiting blocks 83 in limiting connection with the first limiting grooves 43 at the bottom of the first bracket 4; the first mounting plate 81 is assembled with the circuit breaker by rivets or screws.
The movable armature 9 is rotatably mounted on the armature bracket 8 through a rotating shaft 90, and is arranged adjacent to the magnetic ring 6, and the movable armature 9 is provided with a driving rod 91 which is linked with the movable armature and can drive a traction rod (not shown in the figure) to act, wherein the movable armature 9 acts towards a tripping position under the action of the magnetic field force of the magnetic ring 6 during short circuit.
The torsion spring is sleeved on the rotating shaft 90, one end of the torsion spring is propped against the armature bracket 8, and the other end of the torsion spring is propped against the movable armature 9.
As an alternative embodiment, the bottom of the release panel 3 is provided with a first elastic hook, the top of the second bracket 5 is provided with a second hanging hole, the top of the first bracket 4 is provided with a first hanging hole connected with the first elastic hook, and the bottom is provided with a second elastic hook connected with the second hanging hole.
According to the release structure, as the release body 1 can be integrally and detachably arranged on the circuit breaker 2, the release is more rapid and convenient to assemble and disassemble, and the release can be independently tested before the release is assembled with the circuit breaker 2, so that the test efficiency is greatly improved; in addition, both the electronic type and the thermomagnetic type adopt the release structure, so that production and inventory costs are reduced for manufacturers.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (9)
1. The utility model provides a release structure of general installation of electronic type and thermomagnetic type moulded case circuit breaker which characterized in that includes: the tripping device comprises a tripping device body (1) which is detachably installed on a circuit breaker (2) and is provided with a circuit board assembly arranged on the upper part, and a plurality of groups of backup protection assemblies and current transformers which are arranged below and correspond to contact assemblies of each phase;
The release body (1) is provided with a release panel (3), a first bracket (4) and a second bracket (5), wherein the release panel (3), the first bracket (4) and the second bracket (5) are sequentially arranged from top to bottom;
The second bracket (5) is provided with a magnetic ring (6) of the current transformer arranged in the second bracket and a conductive connecting piece (7) penetrating through a through hole in the middle of the magnetic ring (6), and one end of the conductive connecting piece (7) is fixedly provided with the backup protection component;
the backup protection assembly includes:
an armature bracket (8) fixed to one end of the conductive connecting piece (7);
the movable armature (9) is rotatably arranged on the armature bracket (8) through a rotating shaft (90) and is arranged adjacent to the magnetic ring (6), and the movable armature (9) is provided with a driving rod (91) which is linked with the movable armature and can drive the traction rod to act, wherein the movable armature (9) acts towards a tripping position under the action of the magnetic field force of the magnetic ring (6) during short circuit;
the torsion spring is sleeved on the rotating shaft (90), one end of the torsion spring is propped against the armature bracket (8), and the other end of the torsion spring is propped against the movable armature (9).
2. The release structure of the universal installation of electronic and thermo-magnetic molded case circuit breakers according to claim 1, characterized in that the release body (1) is assembled with the circuit breaker (2) through a plugging structure comprising a slot (21) provided on one side of the release body (1) and the circuit breaker (2) and a plug (11) provided on the other side and plugged in correspondence to the slot (21).
3. The release structure of the universal installation of electronic and thermo-magnetic molded case circuit breakers according to claim 1, characterized in that the release panel (3) is assembled with the first bracket (4) by means of a first hooking structure comprising a first hooking hole (31) provided on one side of the release panel (3) and the first bracket (4), and a first elastic hook (41) provided on the other side in hooking connection with the first hooking hole (31).
4. A release structure for universal mounting of electronic and thermo-magnetic molded case circuit breakers according to claim 3, characterized in that the first bracket (4) is assembled with the second bracket (5) by means of a second hooking structure comprising a second hooking hole (42) provided on one side of the first bracket (4) and the second bracket (5), and a second elastic hook (51) provided on the other side in hooking connection with the second hooking hole (42).
5. The release structure for universal installation of electronic and thermo-magnetic molded case circuit breakers according to claim 1, wherein the armature bracket (8) comprises a first mounting plate (81) arranged horizontally and fixedly connected with the conductive connecting piece (7), and a second mounting plate (82) arranged vertically to the first mounting plate (81), and the second mounting plate (82) is in limit connection with the first bracket (4) and the circuit breaker (2) through a first limit structure and a second limit structure respectively.
6. The release structure for universal installation of electronic and thermo-magnetic molded case circuit breakers according to claim 5, wherein the first limiting structure comprises a first limiting groove (43) arranged at the bottom of the first bracket (4), and a first limiting block (83) arranged at the top of the second mounting plate (82) and in limiting connection with the first limiting groove (43).
7. The release structure for universal installation of electronic and thermo-magnetic molded case circuit breakers according to claim 5 or 6, wherein the second limit structure comprises second limit blocks (84) arranged on two sides of the second mounting plate (82), and second limit grooves (22) arranged on the circuit breaker (2) and correspondingly connected with the second limit blocks (84).
8. The release structure for universal installation of electronic and thermo-magnetic molded case circuit breakers according to any of the claims 3-6, characterized in that the first bracket (4) and the second bracket (5) are respectively shaped with a first step (44) and a second step (52) which are correspondingly abutted against the top and bottom surfaces of the magnetic ring (6).
9. The universal mounted release structure of an electronic and thermo-magnetic molded case circuit breaker according to any of claims 3-6, characterized in that the second bracket (5) has a spacer (53) between two adjacent sets of the multi-set backup protection assembly and the current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168497.8A CN113192798B (en) | 2021-02-07 | 2021-02-07 | Electronic type and thermomagnetic type release structure for universal installation of molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168497.8A CN113192798B (en) | 2021-02-07 | 2021-02-07 | Electronic type and thermomagnetic type release structure for universal installation of molded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113192798A CN113192798A (en) | 2021-07-30 |
| CN113192798B true CN113192798B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110168497.8A Active CN113192798B (en) | 2021-02-07 | 2021-02-07 | Electronic type and thermomagnetic type release structure for universal installation of molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113192798B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115148556B (en) * | 2022-09-01 | 2024-01-23 | 浙江正泰电器股份有限公司 | Integrated protection module and circuit breaker |
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| EP0951045A2 (en) * | 1998-04-14 | 1999-10-20 | ABBPATENT GmbH | Ground fault circuit braker |
| JP2005184956A (en) * | 2003-12-18 | 2005-07-07 | Hitachi Ltd | Electric feeder line protection method and device |
| CN200972844Y (en) * | 2006-08-09 | 2007-11-07 | 任登华 | Universal leakage drop-out fitting |
| DE102006027812A1 (en) * | 2006-06-16 | 2007-12-20 | Siemens Ag | Circuit breaker and magnetic yoke for a circuit breaker |
| DE102009037250A1 (en) * | 2009-08-12 | 2011-02-17 | Siemens Aktiengesellschaft | Short-circuit trip i.e. electromagnetic trip, for use in power circuit breaker to switch and protect motor, has coil winding, where coil winding of wedge-shaped winding guides is wound on coil body |
| CN108899256A (en) * | 2018-07-27 | 2018-11-27 | 高能格乐电气股份有限公司 | The disengaging deivce of earth leakage of general two kinds of breakers |
| CN210692458U (en) * | 2019-04-17 | 2020-06-05 | 重庆科创职业学院 | Communication type electronic release and intelligent circuit breaker |
| CN211208347U (en) * | 2019-12-02 | 2020-08-07 | 浙江正泰电器股份有限公司 | Electronic type moulded case circuit breaker's reserve protection device and electronic type moulded case circuit breaker |
| CN212257320U (en) * | 2020-07-09 | 2020-12-29 | 加西亚电子电器股份有限公司 | Tripping system of circuit breaker and circuit breaker |
-
2021
- 2021-02-07 CN CN202110168497.8A patent/CN113192798B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0951045A2 (en) * | 1998-04-14 | 1999-10-20 | ABBPATENT GmbH | Ground fault circuit braker |
| JP2005184956A (en) * | 2003-12-18 | 2005-07-07 | Hitachi Ltd | Electric feeder line protection method and device |
| DE102006027812A1 (en) * | 2006-06-16 | 2007-12-20 | Siemens Ag | Circuit breaker and magnetic yoke for a circuit breaker |
| CN200972844Y (en) * | 2006-08-09 | 2007-11-07 | 任登华 | Universal leakage drop-out fitting |
| DE102009037250A1 (en) * | 2009-08-12 | 2011-02-17 | Siemens Aktiengesellschaft | Short-circuit trip i.e. electromagnetic trip, for use in power circuit breaker to switch and protect motor, has coil winding, where coil winding of wedge-shaped winding guides is wound on coil body |
| CN108899256A (en) * | 2018-07-27 | 2018-11-27 | 高能格乐电气股份有限公司 | The disengaging deivce of earth leakage of general two kinds of breakers |
| CN210692458U (en) * | 2019-04-17 | 2020-06-05 | 重庆科创职业学院 | Communication type electronic release and intelligent circuit breaker |
| CN211208347U (en) * | 2019-12-02 | 2020-08-07 | 浙江正泰电器股份有限公司 | Electronic type moulded case circuit breaker's reserve protection device and electronic type moulded case circuit breaker |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113192798A (en) | 2021-07-30 |
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