CN201845724U - Circuit breaker overload protection device - Google Patents
Circuit breaker overload protection device Download PDFInfo
- Publication number
- CN201845724U CN201845724U CN201020197694XU CN201020197694U CN201845724U CN 201845724 U CN201845724 U CN 201845724U CN 201020197694X U CN201020197694X U CN 201020197694XU CN 201020197694 U CN201020197694 U CN 201020197694U CN 201845724 U CN201845724 U CN 201845724U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- overload protection
- breaker overload
- protection device
- bimetal leaf
- 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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- Breakers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The utility model relates to a circuit breaker overload protection device which comprises a heating element and a bimetallic sheet; the bimetallic sheet is provided with a contact; and the device is characterized in that an insulation sheet is arranged between the bimetallic sheet and the heating element. In the circuit breaker overload protection device, because the insulation sheet is arranged between the bimetallic sheet and the heating element, the heat transfer of the heating element to the bimetallic sheet is reduced, and the normal work of the circuit breaker overload protection device at high temperature is realized.
Description
Technical field
The utility model relates to low voltage electrical equipment, specifically is a kind of circuit breaker overload protection arrangement that uses in low-voltage circuit breaker.
Background technology
Circuit breaker overload protection arrangement in the low-voltage circuit breaker generally comprises heater element and bimetal leaf; serve as the heat that the live conductance causes heater element and be transmitted to bimetal leaf; cause the bimetal leaf bending of the different coefficients of expansion; the jumping that realizes circuit breaker is disconnected; the circuit breaker overload protection arrangement of this structure is subjected to the influence of operating ambient temperature; normal environment for use temperature is 40 ℃～45 ℃, and GB14048.2 regulation ambient temperature is 40 ℃.And the ambient temperature of the circuit breaker overload protection arrangement that uses in electric locomotive usually surpasses the temperature value of regulation, usually reaches 60-70 ℃, causes that easily the jumping that misoperation causes is disconnected, can't satisfy the needs of use.
Summary of the invention
The purpose of this utility model is to satisfy the defective of ambient temperature at prior art, proposes a kind of circuit breaker overload protection arrangement that is applicable under the hot environment.
The purpose of this utility model is achieved in that a kind of circuit breaker overload protection arrangement of the present utility model, and it comprises heater element and bimetal leaf, and the contact is arranged on the bimetal leaf, and it is characterized in that has an insulating trip between bimetal leaf and heater element.
Circuit breaker overload protection arrangement of the present utility model because an insulating trip is arranged, has reduced the heat conduction of heater element to bimetal leaf between bimetal leaf and heater element, realize the operate as normal of circuit breaker overload protection arrangement under the condition of high temperature.
Description of drawings
Fig. 1 is the structural representation of circuit breaker overload protection arrangement of the present utility model.
Embodiment
The utility model is described in further detail by embodiment below in conjunction with accompanying drawing.
As shown in Figure 1; a kind of circuit breaker overload protection arrangement of the present utility model; it comprises heater element 1 and bimetal leaf 3; contact 4 is arranged on the bimetal leaf 3; bimetal leaf 3 is connected with heater element 1 usefulness rivet 2; one insulating trip 5 is arranged between bimetal leaf 3 and the heater element 1, and heater element is welded on the binding post 6.
Claims (1)
1. circuit breaker overload protection arrangement, it comprises heater element (1) and bimetal leaf (3), and contact (4) is arranged on the bimetal leaf (3), it is characterized in that has an insulating trip (5) between bimetal leaf (3) and heater element (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020197694XU CN201845724U (en) | 2010-05-21 | 2010-05-21 | Circuit breaker overload protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020197694XU CN201845724U (en) | 2010-05-21 | 2010-05-21 | Circuit breaker overload protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845724U true CN201845724U (en) | 2011-05-25 |
Family
ID=44040606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020197694XU Expired - Fee Related CN201845724U (en) | 2010-05-21 | 2010-05-21 | Circuit breaker overload protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201845724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632892A (en) * | 2012-08-22 | 2014-03-12 | 西门子公司 | Miniature circuit breaker and insulation sheet thereof |
-
2010
- 2010-05-21 CN CN201020197694XU patent/CN201845724U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632892A (en) * | 2012-08-22 | 2014-03-12 | 西门子公司 | Miniature circuit breaker and insulation sheet thereof |
| CN103632892B (en) * | 2012-08-22 | 2015-11-25 | 西门子公司 | Miniature circuit breaker and insulating trip thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20120521 |