CN203288482U - Disconnecting switch with fuse - Google Patents
Disconnecting switch with fuse Download PDFInfo
- Publication number
- CN203288482U CN203288482U CN2013203565847U CN201320356584U CN203288482U CN 203288482 U CN203288482 U CN 203288482U CN 2013203565847 U CN2013203565847 U CN 2013203565847U CN 201320356584 U CN201320356584 U CN 201320356584U CN 203288482 U CN203288482 U CN 203288482U
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- CN
- China
- Prior art keywords
- fuse
- switch
- wire terminal
- fixed contact
- knife
- 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 - Lifetime
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- Switch Cases, Indication, And Locking (AREA)
- Fuses (AREA)
Abstract
The utility model relates to a disconnecting switch with a fuse. The disconnecting switch with the fuse comprises a switch base, a switch cover, an incoming wire terminal and an outgoing wire terminal, the incoming wire terminal and the outgoing wire terminal are connected with fixed contacts respectively, and a knife switch is arranged between the fixed contacts of the incoming wire terminal and the outgoing wire terminal. The disconnecting switch with the fuse is mainly characterized in that the knife switch is mainly formed by the fuse fixedly arranged on the switch cover, and the two ends of the fuse are respectively equipped with moving contacts matching the fixed contacts. When the fuse is installed and replaced, the knife switch is switched off firstly, so that the maloperation of installing and replacing the fuse on the condition that the knife switch is closed, is avoided. Moreover, an arc extinguish chamber is arranged above the fixed contact, so that the situation is prevented that when the knife switch is switched off, an arc is caused to thereby cause a short-circuit accident. The disconnecting switch with the fuse has the advantages of being safe in the installation and replacement operations of the fuse, good in product use safety, etc., and is suitable for the disconnecting switch of a Three-phase low voltage circuit.
Description
Technical field
The utility model relates to a kind of appliance switch, particularly about a kind of isolating switch.The utility model is applicable to the isolating switch of three-phase low-voltage circuit.
Background technology
At present, have protection and isolation features Combined switch of circuit breaker concurrently, all adopt at the knife switch front end discrete fuse box is set, by fuse, realize the circuit overcurrent protection, knife switch is realized the isolation to circuit.Its major defect is: when installing or change fuse, need at first pull open knife switch, installation insurance silk and to pull open knife switch be two discrete operational motions, easily occur directly carrying out the misoperation of installation insurance silk in the situation of knife switch closure, and security incident occurs.And existing knife switch does not all have arc-control device, easily produces electric arc when operating a switch, and causes fire.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, a kind of knife switch and fuse of integrating is provided, install, must pull open knife switch while changing fuse, handling safety, and arc extinction performance is good, use the safe isolating switch with fuse.
The technical solution of the utility model comprises switch base, switch cover, input terminal, outlet terminal, input terminal and outlet terminal are connecting respectively fixed contact, be provided with plug-in strip between the fixed contact of input terminal and outlet terminal, be mainly that plug-in strip is comprised of the fuse that is fixedly mounted on switch cover, at the two ends of fuse, be shaped with respectively the moving contact that coordinates with fixed contact.
In above technical scheme, fixed contact is comprised of jump ring, clip and Connection Block, and jump ring is fixedly mounted on Connection Block by clip, is fixedly installed on switch base by screw in the middle of Connection Block.
In above technical scheme, be provided with arc control device above the fixed contact with outlet terminal is connected.
In above technical scheme, be fixedly connected with T-shaped hook on fuse, be fixedly mounted in elastic fastening hook on switch cover by this T-shaped hook.
The utility model has the advantages that the fuse combination is arranged in knife switch, the pull-up knife switch at first installing, while changing fuse, the misoperation of fuse is installed, changes in the situation of having avoided knife switch to close a floodgate, and arc control device are set above fixed contact, while preventing from operating a switch, electric arc causes short circuit accident, have the characteristics such as fuse is installed, the replacing handling safety, and the product safety in utilization is good.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The isolating switch with fuse as shown in Figure 1, comprise switch base 1, switch cover 3, input terminal 9, outlet terminal 11, input terminal 9 is connected and is being connected respectively fixed contact with outlet terminal, be provided with plug-in strip between the fixed contact of input terminal 9 and outlet terminal 11, plug-in strip is comprised of the fuse 6 that is fixedly mounted on switch cover 3, at the two ends of fuse 6, is shaped with respectively the moving contact that coordinates with fixed contact.When isolating switch was closed, the moving contact at fuse 6 two ends snapped onto respectively in the fixed contact that input terminal 9 and outlet terminal 11 be connected, and by the fusible link in fuse 6, connects input terminal 9 and outlet terminal 11.When replacing fuse 6 is installed, must just fuse 6 can be installed on switch cover 3 or take off fuse 6 from switch cover 3 and change, handling safety by pull-up switch cover 3.
Fixed contact is comprised of jump ring 5, clip 7 and Connection Block 12, and jump ring 5 is fixedly mounted on Connection Block 12 by clip 7, is fixedly installed on switch base 1 by screw 8 in the middle of Connection Block 12.Be provided with separate terminal enclosure 10 on the switch base 1 in input terminal 9 outsides.The end of end of incoming cables Connection Block is connected with input terminal 9, and the Connection Block of leading-out terminal is connected with outlet terminal 11.
Be provided with arc control device 4 above the fixed contact with outlet terminal 11 is connected, in outlet terminal 11 outsides, be provided with arc-extinguish chamber 2, the electric arc that produces while preventing from operating a switch causes short circuit and the breaking out of fire accident.
Be fixedly connected with T-shaped hook 13 on fuse 6, in the elastic fastening hook on switch cover 3, T-shaped hook 13 is connected with elastic fastening hook elasticity close-fitting.The T-shaped hook 13 of fuse 6 can be pressed in elastic fastening hook on switch cover 3, by elastic fastening hook, blocks T-shaped hook 13, prevents that fuse 6 from falling down, and also can manually fuse 6 be left behind from elastic fastening hook.
Claims (5)
1. isolating switch with fuse, comprise switch base (1), switch cover (3), input terminal (9), outlet terminal (11), input terminal (9) is connected 11 with outlet terminal) connecting respectively fixed contact, be provided with plug-in strip between the fixed contact of input terminal (9) and outlet terminal (11), it is characterized in that plug-in strip is comprised of the fuse (6) that is fixedly mounted on switch cover (3), is shaped with respectively at the two ends of fuse (6) moving contact that coordinates with fixed contact.
2. the isolating switch with fuse according to claim 1, it is characterized in that fixed contact is comprised of jump ring (5), clip (7) and Connection Block (12), jump ring (5) is fixedly mounted on Connection Block (12) by clip (7), is fixedly installed on switch base (1) by screw (8) in the middle of Connection Block (12).
3. the isolating switch with fuse according to claim 1 and 2, is characterized in that being provided with arc control device (4) in the fixed contact top that is connected with outlet terminal (11).
4. the isolating switch with fuse according to claim 1 and 2, is characterized in that on fuse (6) being fixedly connected with T-shaped hook (13), by this T-shaped hook, is fixedly mounted in elastic fastening hook on switch cover (3).
5. the isolating switch with fuse according to claim 3, is characterized in that on fuse (6) being fixedly connected with T-shaped hook (13), by this T-shaped hook, is fixedly mounted in elastic fastening hook on switch cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203565847U CN203288482U (en) | 2013-06-05 | 2013-06-05 | Disconnecting switch with fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203565847U CN203288482U (en) | 2013-06-05 | 2013-06-05 | Disconnecting switch with fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203288482U true CN203288482U (en) | 2013-11-13 |
Family
ID=49544835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203565847U Expired - Lifetime CN203288482U (en) | 2013-06-05 | 2013-06-05 | Disconnecting switch with fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203288482U (en) |
-
2013
- 2013-06-05 CN CN2013203565847U patent/CN203288482U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
|
| CX01 | Expiry of patent term |