CN203277276U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN203277276U CN203277276U CN 201320301349 CN201320301349U CN203277276U CN 203277276 U CN203277276 U CN 203277276U CN 201320301349 CN201320301349 CN 201320301349 CN 201320301349 U CN201320301349 U CN 201320301349U CN 203277276 U CN203277276 U CN 203277276U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- contact
- miniature circuit
- arc
- control device
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a miniature circuit breaker, comprising a housing, a base, an electromagnetic system, an operating mechanism, a contact system and an arc extinguishing system. The contact system comprises a fixed contact and a moving contact. The moving contact is disposed on the operating mechanism. The fixed contact is disposed on the base. The separation of the contact system is larger than or equal to 4 mm. The arc extinguishing system comprises an arc extinguish chamber, at least two flash barriers and arc-isolating gates. The arc extinguish chamber is disposed under the electromagnetic system. The flash barriers are respectively disposed on two sides of the arc extinguish chamber. The arc-isolating gates are disposed on a gas vent channel of the arc extinguish chamber. Through the contact system, the miniature circuit breaker improves electrical conductivity and braking capacity, and through the arc extinguishing system, arc extinction effect is improved. Therefore, the miniature circuit breaker is reasonable in structure, reliable in performance, good in braking capacity, and beautiful and small in appearance.
Description
Technical field
The utility model relates to breaker technical field, relates in particular to a kind of miniature circuit breaker.
Background technology
Miniature circuit breaker is mainly used in exchanging 50HZ or 60HZ; below rated voltage 400V; rated operational current is the following place of 63A; be used as office building, dwelling house and the similarly overload of illumination, distribution line and the equipment of building and short-circuit protection, also can be used as the use of the frequent make-break operation of circuit and conversion.But the structure of contact terminal of existing miniature circuit breaker is unreasonable, causes its electric conductivity not good, and opening apart from less of contact system causes the breaking capacity of circuit breaker poor.In addition, the structure of the arc quenching system of existing miniature circuit breaker is also unreasonable, causes its arc extinction performance poor, affects security performance.
The utility model content
Technical problem to be solved in the utility model is, a kind of miniature circuit breaker is provided, and it is rational in infrastructure, dependable performance, breaking capacity are strong, aesthetic in appearance small and exquisite.
In order to solve the problems of the technologies described above, the utility model provides a kind of miniature circuit breaker, comprise shell, pedestal, electromagnetic system, operating mechanism, contact system and arc quenching system, described contact system comprises fixed contact and moving contact, described moving contact is located on described operating mechanism, described fixed contact is located on described pedestal, the opening apart from more than or equal to 4mm of described contact system;
Described arc quenching system comprises arc control device, at least two flash barriers and flash barrier, and described arc control device are located at the below of described electromagnetic system, and described flash barrier is divided into the both sides of described arc control device, and described flash barrier is located at the steam vent passage place of described arc control device.
As the improvement of such scheme, the opening apart from more than or equal to 5mm of described contact system.
As the improvement of such scheme, the excess of stroke of described contact system is more than or equal to 1mm.
As the improvement of such scheme, described fixed contact is of a size of 2.8mm * 2.8mm * 0.6mm.
As the improvement of such scheme, described fixed contact is made by Agcdo.
As the improvement of such scheme, described moving contact is copper plate.
As the improvement of such scheme, described electromagnetic system comprises iron core and coil.
As the improvement of such scheme, the length of described arc control device is 20 ~ 30mm.
As the improvement of such scheme, the length of described arc control device is 25mm.
As the improvement of such scheme, described flash barrier is S type or U-shaped.
Implement the utility model, have following beneficial effect:
The utility model provides a kind of miniature circuit breaker, mainly comprise arc quenching system and contact system, wherein, contact system comprises moving contact and fixed contact, described moving contact is located on operating mechanism, and described fixed contact is located on pedestal, and structure of contact terminal is reasonable, can effectively improve contacting of moving contact and fixed contact, improve electric conductivity.And fixed contact is preferably dimensioned to be 2.8mm * 2.8mm * 0.6mm, and the size that increases fixed contact can further be improved contacting of moving contact and fixed contact, improves its electric conductivity.
Opening apart from more than or equal to 4mm of described contact system can effectively be improved breaking capacity.And fixed contact is made by Agcdo, and moving contact is copper plate, can further improve breaking capacity.
Described arc quenching system comprises arc control device, at least two flash barriers and flash barrier, and described arc control device are located at the below of described electromagnetic system, and described flash barrier is divided into the both sides of described arc control device, and described flash barrier is located at the steam vent passage place of described arc control device.Adopt above-mentioned arc quenching system, it is rational in infrastructure, can improve its arc quenching effect, guarantees the security performance of circuit breaker.And the length of arc control device is preferably 20 ~ 30mm, can further improve its arc extinction performance.
In a word, rational in infrastructure, the dependable performance of the utility model miniature circuit breaker, breaking capacity are strong, aesthetic in appearance small and exquisite.
Description of drawings
Fig. 1 is the front view of a kind of miniature circuit breaker of the utility model;
Fig. 2 is the vertical view of miniature circuit breaker shown in Figure 1;
Fig. 3 is the cutaway view of miniature circuit breaker shown in Figure 1.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.
In conjunction with Fig. 1 to Fig. 3, the utility model provides a kind of miniature circuit breaker, comprises shell 1, pedestal 2, electromagnetic system 3, operating mechanism 4, contact system 5 and arc quenching system 6.The utility model has improved electric conductivity and breaking capacity by contact system 5, has improved arc quenching effect by arc quenching system 6.
Wherein, described electromagnetic system 3 comprises iron core 31 and the coil 32 that is wrapped on iron core 31, and described iron core 31 is located on pedestal 2.Described coil 32 can be set according to actual needs, for example, can carry out according to the size of circuit breaker current the configuration of the number of turn and the wire diameter of coil 32.
Described operating mechanism 4 comprises handle 41, handle and connecting rod 42, indication piece 43, axle 44 and spring 45, and wherein, handle and connecting rod 42 is connected with described handle 41.
Described contact system 5 comprises fixed contact 51 and moving contact 52, described moving contact 52 is located on described operating mechanism 4, and described fixed contact 51 is located on described pedestal 2, and structure of contact terminal is reasonable, can effectively improve contacting of moving contact 52 and fixed contact 51, improve electric conductivity.
The excess of stroke of described contact system 5 is more than or equal to 1mm, and opening apart from more than or equal to 4mm of described contact system 5 can effectively improve breaking capacity.
Preferably, described contact system 5 opens distance more than or equal to 5mm.
Better, described fixed contact 51 is made by Agcdo, and described moving contact 52 is copper plate.The fixed contact 51 and the moving contact 52 that adopt above-mentioned material to make can further improve breaking capacity.
And fixed contact 51 is preferably dimensioned to be 2.8mm * 2.8mm * 0.6mm, and the size that increases fixed contact 51 can further be improved contacting of moving contact 52 and fixed contact 51, improves its electric conductivity.
Described arc quenching system 6 comprises arc control device 61, at least two flash barriers 62 and flash barrier 63, described arc control device 61 are located at the below of described electromagnetic system 3, described flash barrier 62 is divided into the both sides of described arc control device 61, and described flash barrier 63 is located at the steam vent passage place of described arc control device 61.Described arc quenching system 6 is rational in infrastructure, can improve its arc quenching effect, guarantees the security performance of circuit breaker.
Preferably, the length of described arc control device 61 is 20 ~ 30mm, can further improve its arc extinction performance.
Better, the length of described arc control device 61 is 25mm, its arc extinction performance is best.
Further, described flash barrier 63 preferably is set to S type or U-shaped, and S type or U-shaped flash barrier 63 coordinate with arc control device 61, flash barrier 62, can improve the arc quenching effect of arc quenching system 6, guarantee the security performance of circuit breaker.
In sum, rational in infrastructure, the dependable performance of the utility model miniature circuit breaker, breaking capacity are strong, aesthetic in appearance small and exquisite.
The above is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.
Claims (10)
1. miniature circuit breaker, comprise shell, pedestal, electromagnetic system, operating mechanism, contact system and arc quenching system, it is characterized in that, described contact system comprises fixed contact and moving contact, described moving contact is located on described operating mechanism, described fixed contact is located on described pedestal, the opening apart from more than or equal to 4mm of described contact system;
Described arc quenching system comprises arc control device, at least two flash barriers and flash barrier, and described arc control device are located at the below of described electromagnetic system, and described flash barrier is divided into the both sides of described arc control device, and described flash barrier is located at the steam vent passage place of described arc control device.
2. miniature circuit breaker as claimed in claim 1, is characterized in that, the opening apart from more than or equal to 5mm of described contact system.
3. miniature circuit breaker as claimed in claim 1, is characterized in that, the excess of stroke of described contact system is more than or equal to 1mm.
4. miniature circuit breaker as claimed in claim 1, is characterized in that, described fixed contact is of a size of 2.8mm * 2.8mm * 0.6mm.
5. miniature circuit breaker as claimed in claim 1, is characterized in that, described fixed contact is made by Agcdo.
6. miniature circuit breaker as claimed in claim 1, is characterized in that, described moving contact is copper plate.
7. miniature circuit breaker as claimed in claim 1, is characterized in that, described electromagnetic system comprises iron core and coil.
8. miniature circuit breaker as claimed in claim 1, is characterized in that, the length of described arc control device is 20 ~ 30mm.
9. miniature circuit breaker as claimed in claim 8, is characterized in that, the length of described arc control device is 25mm.
10. miniature circuit breaker as claimed in claim 1, is characterized in that, described flash barrier is S type or U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320301349 CN203277276U (en) | 2013-05-29 | 2013-05-29 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320301349 CN203277276U (en) | 2013-05-29 | 2013-05-29 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203277276U true CN203277276U (en) | 2013-11-06 |
Family
ID=49507632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320301349 Expired - Fee Related CN203277276U (en) | 2013-05-29 | 2013-05-29 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203277276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148236A (en) * | 2018-09-17 | 2019-01-04 | 美高电气科技有限公司 | A kind of breaker |
-
2013
- 2013-05-29 CN CN 201320301349 patent/CN203277276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148236A (en) * | 2018-09-17 | 2019-01-04 | 美高电气科技有限公司 | A kind of breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20170529 |