CN207676871U - A kind of miniature circuit breaker - Google Patents
A kind of miniature circuit breaker Download PDFInfo
- Publication number
- CN207676871U CN207676871U CN201820099317.9U CN201820099317U CN207676871U CN 207676871 U CN207676871 U CN 207676871U CN 201820099317 U CN201820099317 U CN 201820099317U CN 207676871 U CN207676871 U CN 207676871U
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- CN
- China
- Prior art keywords
- arc
- striking
- striking piece
- chutes
- pedestal
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model is related to a kind of miniature circuit breakers, including pedestal, upper cover, operating mechanism, contact system, arc quenching system, magnetictrip, the contact system includes the moving contact with operating mechanism linkage setting, static contact is set in pedestal, arc quenching system includes being located at the arc-chutes being arranged in pedestal between moving contact and static contact, the first arc striking piece in the side of arc-chutes is set, the second arc striking piece in the other side of arc-chutes is set, one end of second arc striking piece extends in the downside of arc-chutes, the other end of second arc striking piece is connected in inlet wire connecting terminal, and second is formed with striking portion in inverted u-shaped in the middle part of arc striking piece, and striking channel is formed between striking portion and the first arc striking piece.The utility model has the advantages that simple in structure, stable and reliable for performance, service life is long, strong breaking capacity.
Description
Technical field
The utility model is related to breaker technical fields, and in particular to a kind of miniature circuit breaker.
Background technology
Miniature circuit breaker is mainly used for the various places such as industrial, commercial, high-rise and residential premises.Suitable for exchange 50/
60Hz rated voltage 230/400V, the overload and short-circuit protection of rated current to 63A circuits are used, can also be under normal circumstances
Infrequently operation conversion as circuit is used.Miniature circuit breaker includes shell, operating mechanism, contact system, arc quenching system, electricity
The structure design of magnetic release, the arc quenching system of existing miniature circuit breaker is unreasonable, exists so as to cause the miniature circuit breaker
The defect that service life is short, breaking capacity is low, performance is unstable.
Invention content
The purpose of the utility model is to overcome the defect of the prior art, provide it is a kind of it is simple in structure, stable and reliable for performance,
The miniature circuit breaker of service life length, strong breaking capacity.
To achieve the above object, the utility model uses a kind of miniature circuit breaker, including including pedestal, upper cover, operation machine
Structure, contact system, arc quenching system, magnetictrip, the contact system include with operating mechanism linkage setting moving contact,
Static contact is set in pedestal, described in arc quenching system include being arranged in pedestal between being located at moving contact and static contact
Arc-chutes, be arranged the side of arc-chutes the first arc striking piece, the second arc striking piece in the other side of arc-chutes is set, it is described
One end of second arc striking piece extends in the downside of arc-chutes, and the other end of the second arc striking piece is connected in inlet wire connecting terminal, and
The striking portion in inverted u-shaped is formed in the middle part of second arc striking piece, and it is logical that striking is formed between striking portion and the first arc striking piece
Road.
The advantageous effect of above structure is：It is formed between the first arc striking piece and the second arc striking piece of arc quenching system for inhaling
Electric arc can be rapidly introduced into arc-chutes by the striking channel of striking arc, the first arc striking piece, the second arc striking piece, to which electric arc can be quick
Extinguish, enhance arc quenching effect, simple in structure, stable and reliable for performance, service life is long, disjunction to which the miniature circuit breaker has
The strong advantage of ability.
Particularly, it corresponds to be provided at the downside of arc-chutes on the pedestal and be let out with extraneous for being connected to striking channel
Arc slot.Remaining electric arc can be exported by letting out arc slot, enhance arc quenching effect.
Particularly, raised line, the striking portion card are provided at the striking portion of corresponding second arc striking piece in the pedestal
On raised line and constitute the second arc striking piece and pedestal clamping engagement.Second arc striking piece is with pedestal by the way of being engaged by clamping
Connection is convenient for the efficiency of assembling of the second arc striking piece and pedestal, improves the efficiency of assembling of the miniature circuit breaker.
Description of the drawings
Fig. 1 is the utility model embodiment internal structure chart.
Specific implementation mode
As shown in Figure 1, the utility model embodiment is a kind of miniature circuit breaker, including including pedestal 10, upper cover, operation machine
Structure 11, contact system 20, arc quenching system 30, magnetictrip 12, the contact system 20 include linking with operating mechanism 11
Static contact 22 is arranged in pedestal 10 in the moving contact 21 of setting, and the arc quenching system 30 includes being located at moving contact 21 and stationary contact
Be arranged between first 22 the arc-chutes 31 in pedestal 10, be arranged the side of arc-chutes 31 the first arc striking piece 32, setting exist
One end of second arc striking piece 33 of the other side of arc-chutes 31, second arc striking piece 33 extends in the downside of arc-chutes 31,
The other end of second arc striking piece 33 is connected in inlet wire connecting terminal 34, and the middle part of the second arc striking piece 33 is formed in inversion U
The striking portion 331 of type, and it is formed with striking channel 300 between striking portion 331 and the first arc striking piece 32.It is right on the pedestal 10
It answers to be provided at the downside of arc-chutes 31 and lets out arc slot 101 with extraneous for being connected to striking channel 300.Letting out arc slot can be by remnants'
Electric arc exports, and enhances arc quenching effect.In the pedestal 10 raised line is provided at the striking portion 331 of corresponding second arc striking piece 33
102, the striking portion 331 is installed on raised line 102 and constitutes the clamping engagement of the second arc striking piece 33 and pedestal 10.Second draws
Arcs are connect with pedestal by the way of being engaged by clamping, and are convenient for the efficiency of assembling of the second arc striking piece and pedestal, it is small-sized to improve this
The efficiency of assembling of breaker.It is formed with and is used between the first arc striking piece and the second arc striking piece of the arc quenching system of the miniature circuit breaker
Attract the striking channel of electric arc, the first arc striking piece, the second arc striking piece that electric arc can be rapidly introduced into arc-chutes, to which electric arc can be fast
Speed is extinguished, and arc quenching effect is enhanced, and to which the miniature circuit breaker has, simple in structure, stable and reliable for performance, service life is long, divides
The strong advantage of cutting capacity.
Claims (3)
1. a kind of miniature circuit breaker, including including pedestal, upper cover, operating mechanism, contact system, arc quenching system, magnetictrip,
Static contact is arranged in pedestal in the moving contact for setting that the contact system includes and operating mechanism links, it is characterised in that：Institute
The arc quenching system stated includes being located at the arc-chutes being arranged in pedestal between moving contact and static contact, being arranged the one of arc-chutes
The second arc striking piece in the other side of arc-chutes is arranged in first arc striking piece of side, and one end of second arc striking piece extends in
The other end of the downside of arc-chutes, the second arc striking piece is connected in inlet wire connecting terminal, and is formed in the middle part of the second arc striking piece
In the striking portion of inverted u-shaped, and striking channel is formed between striking portion and the first arc striking piece.
2. miniature circuit breaker according to claim 1, it is characterised in that：At the downside for corresponding to arc-chutes on the pedestal
It is provided with and lets out arc slot with extraneous for being connected to striking channel.
3. miniature circuit breaker according to claim 1 or 2, it is characterised in that：Corresponding second arc striking piece in the pedestal
Striking portion at be provided with raised line, the striking portion, which is installed on raised line and constitutes the clamping of the second arc striking piece and pedestal, matches
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820099317.9U CN207676871U (en) | 2018-01-22 | 2018-01-22 | A kind of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820099317.9U CN207676871U (en) | 2018-01-22 | 2018-01-22 | A kind of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207676871U true CN207676871U (en) | 2018-07-31 |
Family
ID=62973526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820099317.9U Active CN207676871U (en) | 2018-01-22 | 2018-01-22 | A kind of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207676871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192631A (en) * | 2018-10-12 | 2019-01-11 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and breaker |
| CN113241290A (en) * | 2021-05-10 | 2021-08-10 | 国网山东省电力公司莱芜供电公司 | Current overload monitoring device |
-
2018
- 2018-01-22 CN CN201820099317.9U patent/CN207676871U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192631A (en) * | 2018-10-12 | 2019-01-11 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and breaker |
| CN109192631B (en) * | 2018-10-12 | 2024-04-16 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and circuit breaker |
| CN113241290A (en) * | 2021-05-10 | 2021-08-10 | 国网山东省电力公司莱芜供电公司 | Current overload monitoring device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |