CN201845723U - Overload protection device of circuit breaker - Google Patents

Overload protection device of circuit breaker Download PDF

Info

Publication number
CN201845723U
CN201845723U CN201020197687XU CN201020197687U CN201845723U CN 201845723 U CN201845723 U CN 201845723U CN 201020197687X U CN201020197687X U CN 201020197687XU CN 201020197687 U CN201020197687 U CN 201020197687U CN 201845723 U CN201845723 U CN 201845723U
Authority
CN
China
Prior art keywords
circuit breaker
overload protection
heater
bimetal leaf
protection arrangement
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
CN201020197687XU
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 CN201020197687XU priority Critical patent/CN201845723U/en
Application granted granted Critical
Publication of CN201845723U publication Critical patent/CN201845723U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to an overload protection device of a circuit breaker, which comprises a heating element and a bimetallic piece, wherein the bimetallic piece is provided with a contact; the overload protection device is characterized in that one end of the heating element is connected with a connecting piece made of nickel copper. In the utility model, as one end of the heating element is connected with the connecting piece made of the nickel copper, the thermal conductivity is improved, and the action reliability between the bimetallic piece and a moving contact conductive system is also enhanced.

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; it comprises heater element and bimetal leaf; the contact is arranged on the bimetal leaf, it is characterized in that connecting the brace that an ambrose alloy is made in a termination of heater element.
Circuit breaker overload protection arrangement of the present utility model owing to connect the brace that an ambrose alloy is made in termination of heater element, has increased thermal conductivity, make it and bimetal leaf and moving contact conducting system between increased the reliability of moving.
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 3 and bimetal leaf 5; contact 6 is arranged on the bimetal leaf 5; connect with rivet 4 between heater element 3 and the bimetal leaf 5; it is characterized in that connecting the brace 1 that an ambrose alloy is made in a termination spot welding of heater element 3, also connect with rivet 2 between heater element 3 and the brace 1, another termination of heater element 3 is welded on the binding post 7.

Claims (1)

1. circuit breaker overload protection arrangement, it comprises heater element (3) and bimetal leaf (5), and contact (6) is arranged on the bimetal leaf (5), it is characterized in that connecting the brace (1) that an ambrose alloy is made in a termination of heater element (3).
CN201020197687XU 2010-05-21 2010-05-21 Overload protection device of circuit breaker Expired - Fee Related CN201845723U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201020197687XU CN201845723U (en) 2010-05-21 2010-05-21 Overload protection device of circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020197687XU CN201845723U (en) 2010-05-21 2010-05-21 Overload protection device of circuit breaker

Publications (1)

Publication Number Publication Date
CN201845723U true CN201845723U (en) 2011-05-25

Family

ID=44040605

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201020197687XU Expired - Fee Related CN201845723U (en) 2010-05-21 2010-05-21 Overload protection device of circuit breaker

Country Status (1)

Country Link
CN (1) CN201845723U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102436985A (en) * 2011-09-30 2012-05-02 法泰电器(江苏)股份有限公司 Heat element mechanism for circuit breaker tripping device
CN103367064A (en) * 2013-05-08 2013-10-23 华通机电股份有限公司 Plastic housing circuit breaker and thermal release system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102436985A (en) * 2011-09-30 2012-05-02 法泰电器(江苏)股份有限公司 Heat element mechanism for circuit breaker tripping device
CN103367064A (en) * 2013-05-08 2013-10-23 华通机电股份有限公司 Plastic housing circuit breaker and thermal release system 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