CN201845724U - Circuit breaker overload protection device - Google Patents

Circuit breaker overload protection device Download PDF

Info

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
bimetal leaf
heater
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
Application number
CN201020197694XU
Other languages
Chinese (zh)
Inventor
张菊英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIAXING JIAKONG ELECTRIC EQUIPMENT MANUFACTURING Co Ltd
Original Assignee
JIAXING JIAKONG ELECTRIC EQUIPMENT MANUFACTURING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIAXING JIAKONG ELECTRIC EQUIPMENT MANUFACTURING Co Ltd filed Critical JIAXING JIAKONG ELECTRIC EQUIPMENT MANUFACTURING Co Ltd
Priority to CN201020197694XU priority Critical patent/CN201845724U/en
Application granted granted Critical
Publication of CN201845724U publication Critical patent/CN201845724U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

The circuit breaker overload protection arrangement
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).
CN201020197694XU 2010-05-21 2010-05-21 Circuit breaker overload protection device Expired - Fee Related CN201845724U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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