CN208027992U - A kind of low-voltage circuit breaker - Google Patents
A kind of low-voltage circuit breaker Download PDFInfo
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- CN208027992U CN208027992U CN201721730093.9U CN201721730093U CN208027992U CN 208027992 U CN208027992 U CN 208027992U CN 201721730093 U CN201721730093 U CN 201721730093U CN 208027992 U CN208027992 U CN 208027992U
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- shell
- contact system
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- circuit breaker
- voltage
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Abstract
The utility model provides a kind of low-voltage circuit breaker, it includes shell, connecting terminal in case surface is set, it is embedded in the operating unit of case surface, contact system and protection location inside the shell is set, the connecting terminal includes the input terminal and the output terminal, the output of the input terminal connects the contact system, the output of the contact system connects the leading-out terminal, the operating unit can contact-actuating system be opened or closed, the operating unit includes operating switch, cut-out spring, locking key and hasp, protection location includes disconnecting lever, over-current protecting unit, under-voltage protection unit and overheating protection unit.The utility model provides a kind of low-voltage circuit breaker; outside uses fire proofing shell; inside uses height to lead material as conducting circuit; and make contact using are-tight alloy; the electric arc damage equipment generated when preventing closure, disconnecting; protection location is had simultaneously, it is not in the failures such as overload, under-voltage, overheat that circuit, which is effectively ensured,.
Description
Technical field
The utility model is related to field of electrical equipment, are specifically related to a kind of low-voltage circuit breaker.
Background technology
With the continuous development of science and technology, the continuous improvement of living standards of the people, for having more in terms of safety utilization of electric power
High requirement.Especially huge personal injury is caused because electric shock, circuit cause fire, explosive incident takes place frequently in recent years
And economic loss, it uses energetically very urgent with development power protection unit.
Electric brake as common civilian power cutoff device, close a floodgate, disconnected lock when, it is easy to generate electric arc, easily cause get an electric shock,
Fire, while electric brake often prevents short circuit with fuse, has irreversibility.
Utility model content
In order to overcome the deficiencies of existing technologies, the utility model provides a kind of low-voltage circuit breaker, and outside uses fire proofing
Shell, it is internal that height is used to lead material as conducting circuit, and using are-tight alloy making contact, generated when preventing closure, disconnecting
Electric arc damage equipment, while having protection location, it is not in the failures such as overload, under-voltage, overheat that circuit, which is effectively ensured,.
The utility model is realized in this way：
The utility model provides a kind of low-voltage circuit breaker comprising：Shell, be arranged case surface connecting terminal, edge
Operating unit, the contact system and protection location of setting inside the shell embedded in case surface,
The connecting terminal includes the input terminal and the output terminal, and the output of the input terminal connects the contact system
The output of system, the contact system connects the leading-out terminal,
The operating unit can contact-actuating system be opened or closed, the operating unit includes operating switch, open circuit
Spring, locking key and hasp, the cut-out spring make the locking key generate separating force with the hasp for providing reaction force,
The operating switch drive the locking key to be fixed on hasp with maintain the lock status or drive by hook button locking key disconnection with
Release locking state；
The protection location includes disconnecting lever, over-current protecting unit, under-voltage protection unit and overheating protection unit, institute
It states disconnection lever and is separately connected the over-current protecting unit, under-voltage protection unit, overheating protection unit and contact system；
The outside of the shell be provided with the integrally formed heat dissipation channel of the shell, uniformly set on the heat dissipation channel
It is equipped with heat emission hole, heat dissipation channel is internally provided with exhaust fan.
Preferably, the shell uses fire proofing shell.
Preferably, the contact system uses silver alloy contact.
Preferably, the over-current protecting unit uses overcurrent electromagnet, overcurrent electromagnet to be connected in major loop, works as electric current
When excessive, the magnetic force enhancing that overcurrent electromagnet generates drives the disconnection lever so that the contact system disconnects circuit.
Preferably, the under-voltage protection unit includes undervoltage electromagnet and underpressure springs, undervoltage electromagnet and underpressure springs
It is connected in major loop, when voltage is normal, the adsorption capacity of undervoltage electromagnet and the elastic force of underpressure springs are offset, and brownout is worked as
When, the adsorption capacity of undervoltage electromagnet reduces, and underpressure springs drive the disconnection lever that the contact system is made to disconnect.
Preferably, the overheating protection unit includes bimetal leaf.
Compared with prior art, the utility model has the advantages that：
The utility model provides a kind of low-voltage circuit breaker, and outside uses fire proofing shell, internal to lead material work using height
For circuit is connected, and contact is made using are-tight alloy, the electric arc damage equipment generated when preventing closure, disconnecting has simultaneously
Protection location, it is not in the failures such as overload, under-voltage, overheat that circuit, which is effectively ensured,.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Specific implementation mode
Below with reference to the attached drawing exemplary embodiment that the present invention will be described in detail, feature and aspect.It is identical attached in attached drawing
Icon note indicates functionally the same or similar element.Although the various aspects of embodiment are shown in the accompanying drawings, unless special
It does not point out, it is not necessary to attached drawing drawn to scale.
The utility model provides a kind of low-voltage circuit breaker comprising：Shell, be arranged case surface connecting terminal, edge
Operating unit 3, the contact system 4 and protection location of setting inside the shell embedded in case surface,
Connecting terminal includes input terminal 21 and leading-out terminal 22, and the output of the input terminal 21 connects the contact system
The output of system 4, the contact system 4 connects the leading-out terminal 22,
Operating unit 3 can contact-actuating system be opened or closed, the operating unit includes operating switch 31, breaking bullet
Spring 32, locking key 33 and hasp 34, the cut-out spring 32 make the locking key 33 and the hasp 34 for providing reaction force
Separating force is generated, the operating switch 31 drives the locking key 33 to be fixed on hasp 34 to maintain the lock status by hook button
Or driving locking key 33 is disconnected to release locking state；And
Protection location includes disconnecting lever 51, over-current protecting unit 52, under-voltage protection unit 53 and overheating protection unit
54, the disconnection lever 51 be separately connected the over-current protecting unit 52, under-voltage protection unit 53, overheating protection unit 54 and
Contact system 4.
Preferably, the shell uses fire proofing shell.The outside of the shell be provided with the shell one at
The heat dissipation channel of type is evenly arranged with heat emission hole on the heat dissipation channel.Heat dissipation channel is internally provided with exhaust fan, can be external
It radiates inside shell.
Preferably, the contact system 4 is using silver alloy contact.
Preferably, the over-current protecting unit 52 uses overcurrent electromagnet, overcurrent electromagnet to be connected in major loop, works as electricity
When flowing through big, the magnetic force enhancing that overcurrent electromagnet generates drives the disconnection lever so that the contact system 4 disconnects circuit.
Preferably, the under-voltage protection unit 53 includes undervoltage electromagnet and underpressure springs, is connected in major loop, works as electricity
When positive pressure is normal, the adsorption capacity of undervoltage electromagnet and the elastic force of underpressure springs are offset, when brownout, the absorption of undervoltage electromagnet
Power reduces, and underpressure springs drive the disconnection lever, and the contact system 4 is made to disconnect.
Preferably, the overheating protection unit 54, using bimetal leaf, when the temperature is excessively high, and the bimetal leaf, shape
Become, driving disconnects lever, and contact system 4 is made to disconnect.
Finally it should be noted that：Above-described each embodiment is merely to illustrate the technical solution of the utility model, rather than
It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art
It should be understood that：It can still modify to the technical solution recorded in previous embodiment, or to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution the utility model
The range of each embodiment technical solution.
Claims (6)
1. a kind of low-voltage circuit breaker, it is characterised in that：It includes shell, be arranged case surface connecting terminal, be embedded in it is outer
Operating unit, the contact system and protection location of setting inside the shell on shell surface,
The connecting terminal includes the input terminal and the output terminal, and the output of the input terminal connects the contact system, institute
The output for stating contact system connects the leading-out terminal,
The operating unit can contact-actuating system be opened or closed, the operating unit include operating switch, cut-out spring,
Locking key and hasp, the cut-out spring makes the locking key generate separating force with the hasp for providing reaction force, described
Operating switch drives the locking key to be fixed on hasp to maintain the lock status or drive locking key to disconnect to release by hook button
Locking state；
The protection location includes disconnecting lever, over-current protecting unit, under-voltage protection unit and overheating protection unit, described disconnected
It opens lever and is separately connected the over-current protecting unit, under-voltage protection unit, overheating protection unit and contact system；
The outside of the shell be provided with the integrally formed heat dissipation channel of the shell, be evenly arranged on the heat dissipation channel
Heat emission hole, the heat dissipation channel are internally provided with exhaust fan.
2. low-voltage circuit breaker according to claim 1, it is characterised in that：The shell uses fire proofing shell.
3. low-voltage circuit breaker according to claim 1, it is characterised in that：The contact system is touched using silver alloy
Point.
4. low-voltage circuit breaker according to claim 1, it is characterised in that：The over-current protecting unit uses overcurrent electromagnetism
Iron, overcurrent electromagnet are connected in major loop, and when current is excessive, the magnetic force enhancing that overcurrent electromagnet generates drives described disconnected
Lever is opened so that the contact system disconnects circuit.
5. low-voltage circuit breaker according to claim 1, it is characterised in that：The under-voltage protection unit includes undervoltage electromagnet
With underpressure springs, undervoltage electromagnet is connected on underpressure springs in major loop, when voltage is normal, the adsorption capacity of undervoltage electromagnet
It is offset with the elastic force of underpressure springs, when brownout, the adsorption capacity of undervoltage electromagnet reduces, and underpressure springs drive the disconnection
Lever makes the contact system disconnect.
6. low-voltage circuit breaker according to claim 1, it is characterised in that：The overheating protection unit includes bimetal leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721730093.9U CN208027992U (en) | 2017-12-12 | 2017-12-12 | A kind of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721730093.9U CN208027992U (en) | 2017-12-12 | 2017-12-12 | A kind of low-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208027992U true CN208027992U (en) | 2018-10-30 |
Family
ID=63898539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721730093.9U Active CN208027992U (en) | 2017-12-12 | 2017-12-12 | A kind of low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208027992U (en) |
-
2017
- 2017-12-12 CN CN201721730093.9U patent/CN208027992U/en active Active
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