CN201185139Y - AC contactor - Google Patents
AC contactor Download PDFInfo
- Publication number
- CN201185139Y CN201185139Y CNU2008200074486U CN200820007448U CN201185139Y CN 201185139 Y CN201185139 Y CN 201185139Y CN U2008200074486 U CNU2008200074486 U CN U2008200074486U CN 200820007448 U CN200820007448 U CN 200820007448U CN 201185139 Y CN201185139 Y CN 201185139Y
- Authority
- CN
- China
- Prior art keywords
- arc
- conductive plate
- pedestal
- coil
- shaped
- 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
Links
- 230000005291 magnetic Effects 0.000 claims abstract description 24
- 210000002356 Skeleton Anatomy 0.000 claims description 9
- 239000000789 fastener Substances 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 6
- 240000004282 Grewia occidentalis Species 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003068 static Effects 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000000171 quenching Effects 0.000 description 10
- 238000010791 quenching Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses an alternative-current contactor, and is provided with an arc-extinguishing device and a coil device, wherein, the arc-extinguishing device comprises a movable contact, two U-shaped static contacts and an arc-extinguishing mechanism that is arranged at both sides of the movable contact, and is characterized in that the U-shaped groove of each static contact is also provided with a first U-shaped arc element that is used for strengthening the magnetic field strength; the first arc element comprises a U-shaped plate-shaped main body and an arc part that is arranged at one end of the main body and is projected towards the movable contact. The alternative-current contactor of the utility model can effectively strengthen the strength of the magnetic field, thereby increasing the movement speed of the electric arc and improving the arc-extinguishing effect.
Description
Technical field
The utility model belongs to electric product structure-design technique field, is specifically related to a kind of A.C. contactor.
Background technology
U-shaped arc leading angle arc extinguishing is to utilize ferromagnetic U-shaped arc leading angle when contact disconnects, and forms magnetic field in voltage contact area, drives electric arc and outwards moves; When electric arc forms four sections series connection short arcs, during current over-zero, utilize the effective extinguish arcs of proximal pole effect, no longer restrike.
U-shaped arc quenching plate arc-control device is simple in structure because of it; arc extinction performance is good; can protect arc-extinguish chamber preferably, make it avoid being subjected to high arc temperature ground and directly act on and scaling loss, thereby the arc-control device that adopts the U-shaped arc quenching plate to make extensively be applied on the low capacity A.C. contactor.
Up to now, the A.C. contactor of external all employing U-shaped arc leading angle arc extinguishings, dynamic/static contact made of copper of employing without exception and U-shaped arc leading angle match.Studies show that because the arc blow-out magnetic field that the U-shaped arc leading angle forms will be by long space, magnetic field intensity is not high, arc motion speed is unhappy, has influence on arc quenching effect to a certain extent.
Coil block in traditional contactor comprises and is used to that the skeleton of coil is set and is arranged on coil on the skeleton, the power line that the lead-out wire of described coil is general and housing is interior is electrically connected, and the binding post operated by rotary motion of contactor is in the housing upper end, its shortcoming is when complete distribution, if the control power supply in the lower end of contactor, then needs a lead-in wire of control power supply around arriving contactor housing top, wiring is not only inconvenient, but also need long external connection, cause waste.
The utility model content
The purpose of this utility model provides a kind of effective increase magnetic field intensity, thereby increases the A.C. contactor of arc motion speed, raising arc quenching effect.
The technical scheme that realizes the utility model purpose is: a kind of A.C. contactor, have arc-control device and coil device, described arc-control device comprises a moving contact, two U-shaped fixed contacts and be positioned at the arc-extinguishing mechanism of moving contact both sides that its design feature is: also to be provided with basic configuration in the U-lag of described each fixed contact be U-shaped, be used to increase by the first striking part of magnetic field intensity; The described first striking part comprises the tabular main body of U-shaped, is arranged on the striking portion towards moving contact direction projection of main body one end.
In the technique scheme, the basic configuration of the striking portion of the described first striking part is L shaped, and is arranged on the Liang Jiaochu near an end of arc-extinguishing mechanism on U-shaped main body top.
In the technique scheme, described each striking portion wraps a jiao of fixed contact.
In the technique scheme, described moving contact is provided with the second striking part that is used to increase magnetic field intensity; The described second striking part comprises flat main part and is arranged on the striking portion towards fixed contact direction projection of main part corner.
In the technique scheme, the basic configuration of the described second striking part is a rectangle, and being provided with a basic configuration at its four corners is L shaped striking portion; The basic configuration of described moving contact is a rectangle, and described each striking portion wraps a jiao of moving contact.
In the technique scheme, described coil device comprises coil block and the pedestal that is provided with the coil block relative fixed; Described coil block comprises the skeleton and the coil that is arranged on the skeleton that is used to be provided with coil; A plurality of terminal screw assemblies that described pedestal is provided with conductive plate and matches with conductive plate, described lead-out wires of coil is electrically connected with each conductive plate; Described terminal screw assembly is arranged on the two side ends up and down of pedestal.
In the technique scheme, the basic configuration of described pedestal is similar to rectangle, and described coil block is arranged on the center of pedestal; The quantity of described conductive plate is two and is arranged on the left and right sides of pedestal, two terminal screw assemblies is set on each conductive plate at least.
In the technique scheme, described pedestal both sides respectively are provided with a groove, and described each conductive plate is arranged in the groove; Also be provided with the protector that is used to protect each terminal screw assembly on the described pedestal.
In the technique scheme, described conductive plate is provided with Fastener, and described pedestal is being provided with draw-in groove with the corresponding position of Fastener; The middle part of described conductive plate is provided with and is used for the ramp that is electrically connected with lead-out wires of coil.
In the technique scheme, be equipped with the screw that matches with screw assembly on each conductive plate; Described terminal screw assembly comprises screw and pad; Described each ramp is the projection of a projection on the conductive plate.
The utlity model has positive effect: (1) the utility model patent is at the shortcoming of traditional U-shaped arc quenching plate arc-control device; in the U-lag of each fixed contact, also be provided with basic configuration and be U-shaped; be used to increase by the first striking part of magnetic field intensity; this first striking part and fixed contact are fixed as one; because and the tight coupling of arc current; can encourage stronger magnetic field; this magnetic field and original magnetic field are superimposed; driving electric arc moves rapidly; thereby shorten the quenching time greatly; improve breaking capacity; the electric arc arc root silver contact that speeds away simultaneously; jump to be enclosed in four jiaos of contacts striking portion on; effectively contact wear is reduced in the protection contact, helps the raising of electric life.(2) the utility model also can install the second striking part that is used to increase magnetic field intensity additional on the moving contact of contactor, and at the corner of the second striking part basic configuration is set is L shaped and the striking portion that wraps four jiaos of moving contacts, this the second striking part and the first striking part match, can better increase magnetic field intensity, strengthen the intensity of electromagnetic force F, make the electric arc arc root silver contact that speeds away, jump to be enclosed in four jiaos of moving contacts the striking portion of the second striking part on, accelerate arc motion, make electric arc move on on the arc-extinguishing mechanism rapidly, cooling, extinguish arcs shortens the quenching time, improves breaking capacity.(3) the utility model product is provided with the pedestal that is provided with the coil rack relative fixed, and the terminal screw assembly that conductive plate is set on described pedestal and matches with conductive plate, and described lead-out wires of coil is electrically connected with each conductive plate, the external connection of control power supply can be to coil power supply, so the utlity model has the advantage of easy-to-connect by being connected with the terminal screw electrical component.(4) the utility model is arranged on the two side ends up and down of pedestal to described terminal screw assembly, makes the external connection of control power supply to be connected with the terminal screw electrical component of pedestal upper end, also can be connected with the terminal screw electrical component of pedestal lower end; Even the control power supply is in the lower end of the utility model product, also only need be connected to the lead-in wire of control power supply on the terminal screw assembly of pedestal lower side and get final product, need not the outlet of control power supply so just needs the external connection of weak point around to top of the present utility model again, economizes on resources.(5) the utility model is arranged on conductive plate in the groove of the pedestal left and right sides, prevents that effectively conductive plate from exposing, and increases fail safe.(6) the utility model also is provided with the protector that is used to protect each terminal screw assembly on pedestal, thereby avoids terminal screw to expose, and has the advantage of protection against electric shock, increase fail safe.
Description of drawings
Fig. 1 is a kind of perspective view of the present utility model;
Fig. 2 is a kind of perspective view of arc-control device in the A.C. contactor shown in Figure 1;
Fig. 3 is the sectional structure schematic diagram of arc-control device in the A.C. contactor shown in Figure 1;
Fig. 4 is the perspective view of the first striking part in the AC contactor arc control device shown in Figure 1;
Fig. 5 is the perspective view of the second striking part in the AC contactor arc control device shown in Figure 1;
Fig. 6 is the installation site schematic diagram of coil device in the A.C. contactor shown in Figure 1;
Fig. 7 is a kind of perspective view of coil device in the A.C. contactor shown in Figure 1;
A kind of perspective view that Fig. 8 is a coil device shown in Figure 7 when another angle is observed;
Fig. 9 is a kind of perspective view of coil device shown in Figure 7 after removing conductive plate and terminal screw assembly;
A kind of perspective view that Figure 10 is a coil device shown in Figure 9 when another angle is observed;
Figure 11 is a kind of perspective view of conductive plate in the coil device shown in Figure 7;
Figure 12 is a kind of perspective view of conductive plate shown in Figure 11 after installing the screw connector assembly.
Be labeled as shown in the accompanying drawing: moving contact 1, U-shaped fixed contact 2, arc-extinguishing mechanism 3, the second striking parts 4, main part 41, striking portion 42, the first striking parts 5, main body 51, striking portion 52, spring 6, housing 7; Coil device 8, coil block 81, pedestal 82, groove 821, protector 822, draw-in groove 823, coil 811, skeleton 812, conductive plate 83, Fastener 831, ramp 832, screw 833, terminal screw assembly 84, screw 841, pad 842, lead-out wires of coil 85, housing 9.
Embodiment
(embodiment 1)
Fig. 1 to Figure 12 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is a kind of perspective view of the present utility model; Fig. 2 is a kind of perspective view of arc-control device in the A.C. contactor shown in Figure 1; Fig. 3 is the sectional structure schematic diagram of arc-control device in the A.C. contactor shown in Figure 1; Fig. 4 is the perspective view of the first striking part in the AC contactor arc control device shown in Figure 1; Fig. 5 is the perspective view of the second striking part in the AC contactor arc control device shown in Figure 1; Fig. 6 is the installation site schematic diagram of coil device in the A.C. contactor shown in Figure 1; Fig. 7 is a kind of perspective view of coil device in the A.C. contactor shown in Figure 1; A kind of perspective view that Fig. 8 is a coil device shown in Figure 7 when another angle is observed; Fig. 9 is a kind of perspective view of coil device shown in Figure 7 after removing conductive plate and terminal screw assembly; A kind of perspective view that Figure 10 is a coil device shown in Figure 9 when another angle is observed; Figure 11 is a kind of perspective view of conductive plate in the coil device shown in Figure 7; Figure 12 is a kind of perspective view of conductive plate shown in Figure 11 after installing the screw connector assembly.
Present embodiment is a kind of A.C. contactor, sees Fig. 1 to Figure 12, has arc-control device, coil device 8 and housing 9.
See Fig. 1 to Fig. 5, described arc-control device comprises a moving contact 1, two U-shaped fixed contacts 2 and be positioned at the arc-extinguishing mechanism 3 of moving contact 1 both sides that its design feature is: also to be provided with basic configuration in the U-lag 21 of described each fixed contact 2 be U-shaped, be used to increase by the first striking part 5 of magnetic field intensity; The described first striking part comprises the tabular main body of U-shaped 51, is arranged on the striking portion 52 towards moving contact 1 direction projection of main body 51 1 ends.The basic configuration of the striking portion 52 of the described first striking part 5 is L shaped, and is arranged on the Liang Jiaochu near an end of arc-extinguishing mechanism 3 on U-shaped main body 51 tops.Described each striking portion 52 wraps a jiao of fixed contact 2.Described moving contact 1 is provided with the second striking part 4 that is used to increase magnetic field intensity; The described second striking part 4 comprises flat main part 41 and is arranged on the striking portion 42 towards fixed contact 2 direction projections of main part 41 corners.The basic configuration of the described second striking part 4 is a rectangle, and being provided with a basic configuration at its four corners is L shaped striking portion 42; The basic configuration of described moving contact 1 is a rectangle, and described each striking portion 42 wraps a jiao of moving contact 1.
See Fig. 6 to Figure 12, described coil device 8 comprises coil block 81 and the pedestal 82 that is provided with coil block 81 relative fixed; Described coil block 81 comprises the skeleton 812 and the coil 811 that is arranged on the skeleton 812 that is used to be provided with coil 811; A plurality of terminal screw assemblies 84 that described pedestal 82 is provided with conductive plate 83 and matches with conductive plate 83, described lead-out wires of coil 85 is electrically connected with each conductive plate 83; Described terminal screw assembly 84 is arranged on the two side ends up and down of pedestal 82.
The basic configuration of described pedestal 82 is similar to rectangle, and described coil block 81 is arranged on the center of pedestal 82; The quantity of described conductive plate 83 is two and is arranged on the left and right sides of pedestal 82, two terminal screw assemblies 84 is set on each conductive plate 83 at least.
Described pedestal 82 both sides respectively are provided with a groove 821, and described each conductive plate 83 is arranged in the groove 821; Also be provided with the protector 822 that is used to protect each terminal screw assembly 84 on the described pedestal 82.
Described conductive plate 83 is provided with Fastener 831, and described pedestal 82 is being provided with draw-in groove 823 with the corresponding position of Fastener; The middle part of described conductive plate 83 is provided with and is used for the ramp 832 that is electrically connected with lead-out wires of coil 85; Described each ramp 832 is projections of a projection on the conductive plate 83.
Be equipped with the screw 833 that matches with screw assembly 84 on each conductive plate 83; Described terminal screw assembly 84 comprises screw 841 and pad 842.
It is as follows that present embodiment has advantage:
(1) the utility model patent is at the shortcoming of traditional U-shaped arc quenching plate arc-control device; in the U-lag of each fixed contact, also be provided with basic configuration and be U-shaped; be used to increase by the first striking part of magnetic field intensity; this first striking part and fixed contact are fixed as one; because and the tight coupling of arc current; can encourage stronger magnetic field; this magnetic field and original magnetic field are superimposed; driving electric arc moves rapidly; thereby shorten the quenching time greatly; improve breaking capacity, the electric arc arc root silver contact that speeds away simultaneously, jump to be enclosed in four jiaos of contacts striking portion on; effectively contact wear is reduced in the protection contact, helps the raising of electric life.(2) the utility model also can install the second striking part that is used to increase magnetic field intensity additional on the moving contact of contactor, and at the corner of the second striking part basic configuration is set is L shaped and the striking portion that wraps four jiaos of moving contacts, this the second striking part and the first striking part match, can better increase magnetic field intensity, strengthen the intensity of electromagnetic force F, make the electric arc arc root silver contact that speeds away, jump to be enclosed in four jiaos of moving contacts the striking portion of the second striking part on, accelerate arc motion, make electric arc move on on the arc-extinguishing mechanism rapidly, cooling, extinguish arcs shortens the quenching time, improves breaking capacity.(3) the utility model product is provided with the pedestal that is provided with the coil rack relative fixed, and the terminal screw assembly that conductive plate is set on described pedestal and matches with conductive plate, and described lead-out wires of coil is electrically connected with each conductive plate, the external connection of control power supply can be to coil power supply, so the utlity model has the advantage of easy-to-connect by being connected with the terminal screw electrical component.(4) the utility model is arranged on the two side ends up and down of pedestal to described terminal screw assembly, makes the external connection of control power supply to be connected with the terminal screw electrical component of pedestal upper end, also can be connected with the terminal screw electrical component of pedestal lower end; Even the control power supply is in the lower end of the utility model product, also only need be connected to the lead-in wire of control power supply on the terminal screw assembly of pedestal lower side and get final product, need not the outlet of control power supply so just needs the external connection of weak point around to top of the present utility model again, economizes on resources.(5) the utility model is arranged on conductive plate in the groove of the pedestal left and right sides, prevents that effectively conductive plate from exposing, and increases fail safe.(6) the utility model also is provided with the protector that is used to protect each terminal screw assembly on pedestal, thereby avoids terminal screw to expose, and has the advantage of protection against electric shock, increase fail safe.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection range of the present utility model.
Claims (10)
1, a kind of A.C. contactor, have arc-control device and coil device (8), described arc-control device comprises a moving contact (1), two U-shaped fixed contacts (2) and is positioned at the arc-extinguishing mechanism (3) of moving contact (1) both sides, it is characterized in that: also to be provided with basic configuration in the U-lag (21) of described each fixed contact (2) be U-shaped, be used to increase by the first striking part (5) of magnetic field intensity; The described first striking part comprises the tabular main body of U-shaped (51), is arranged on the striking portion (52) towards moving contact (1) direction projection of main body (51) one ends.
2, A.C. contactor according to claim 1: the basic configuration of the striking portion (52) of the described first striking part (5) is L shaped, and is arranged on the Liang Jiaochu near an end of arc-extinguishing mechanism (3) on U-shaped main body (51) top.
3, A.C. contactor according to claim 2 is characterized in that: described each striking portion (52) wraps a jiao of fixed contact (2).
4, A.C. contactor according to claim 1 is characterized in that: described moving contact (1) is provided with the second striking part (4) that is used to increase magnetic field intensity; The described second striking part (4) comprises flat main part (41) and is arranged on the striking portion (42) towards fixed contact (2) direction projection of main part (41) corner.
5, A.C. contactor according to claim 4 is characterized in that: the basic configuration of the described second striking part (4) is a rectangle, and being provided with a basic configuration at its four corners is L shaped striking portion (42); The basic configuration of described moving contact (1) is a rectangle, and described each striking portion (42) wraps a jiao of moving contact (1).
6, A.C. contactor according to claim 1 is characterized in that: described coil device (8) comprises coil block (81) and the pedestal (82) that is provided with coil block (81) relative fixed; Described coil block (81) comprises the skeleton (812) that is used to be provided with coil (811) and is arranged on coil (811) on the skeleton (812); A plurality of terminal screw assemblies (84) that described pedestal (82) is provided with conductive plate (83) and matches with conductive plate (83), described lead-out wires of coil (85) is electrically connected with each conductive plate (83); Described terminal screw assembly (84) is arranged on the two side ends up and down of pedestal (82).
7, A.C. contactor according to claim 6 is characterized in that: the basic configuration of described pedestal (82) is similar to rectangle, and described coil block (81) is arranged on the center of pedestal (82); The quantity of described conductive plate (83) is two and is arranged on the left and right sides of pedestal (82), two terminal screw assemblies (84) is set on each conductive plate (83) at least.
8, A.C. contactor according to claim 6 is characterized in that: described pedestal (82) both sides respectively are provided with a groove (821), and described each conductive plate (83) is arranged in the groove (821); Also be provided with the protector (822) that is used to protect each terminal screw assembly (84) on the described pedestal (82).
9, A.C. contactor according to claim 6 is characterized in that: described conductive plate (83) is provided with Fastener (831), and described pedestal (82) is being provided with draw-in groove (823) with the corresponding position of Fastener; The middle part of described conductive plate (83) is provided with and is used for the ramp (832) that is electrically connected with lead-out wires of coil (85).
10, A.C. contactor according to claim 9 is characterized in that: be equipped with the screw (833) that matches with screw assembly (84) on each conductive plate (83); Described terminal screw assembly (84) comprises screw (841) and pad (842); Described each ramp (832) is the projection of the last projection of conductive plate (83).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200074486U CN201185139Y (en) | 2008-02-25 | 2008-02-25 | AC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200074486U CN201185139Y (en) | 2008-02-25 | 2008-02-25 | AC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201185139Y true CN201185139Y (en) | 2009-01-21 |
Family
ID=40272876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200074486U Expired - Lifetime CN201185139Y (en) | 2008-02-25 | 2008-02-25 | AC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201185139Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887823A (en) * | 2009-05-14 | 2010-11-17 | 株式会社电装 | Electromagnetic relay |
| CN101231912B (en) * | 2008-02-25 | 2011-11-09 | 人民电器集团有限公司 | AC contactor |
| CN108389742A (en) * | 2018-04-27 | 2018-08-10 | 福州大学 | Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability |
| WO2022247697A1 (en) * | 2021-05-28 | 2022-12-01 | 施耐德电器工业公司 | Deflection member, breaking module, and contactor |
-
2008
- 2008-02-25 CN CNU2008200074486U patent/CN201185139Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231912B (en) * | 2008-02-25 | 2011-11-09 | 人民电器集团有限公司 | AC contactor |
| CN101887823A (en) * | 2009-05-14 | 2010-11-17 | 株式会社电装 | Electromagnetic relay |
| CN101887823B (en) * | 2009-05-14 | 2013-07-31 | 株式会社电装 | Electromagnetic relay |
| CN108389742A (en) * | 2018-04-27 | 2018-08-10 | 福州大学 | Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability |
| WO2022247697A1 (en) * | 2021-05-28 | 2022-12-01 | 施耐德电器工业公司 | Deflection member, breaking module, and contactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2647861A1 (en) | Grounding switch | |
| CN201185139Y (en) | AC contactor | |
| CN105321744A (en) | On-load capacity-regulating switch for transformer | |
| CN104779119B (en) | A kind of high-current supply relay | |
| CN202633100U (en) | Kilovolt-level double-pole dual-breaker air type isolation reversing switch for mine | |
| CN209056406U (en) | A kind of breaker with magnetic quenching structure | |
| CN101217076B (en) | AC contactor arc control device | |
| CN201163581Y (en) | Arc-extinguishing device of AC contactor | |
| CN207425733U (en) | A kind of motor drives bridging contact on-load switch | |
| CN101231912B (en) | AC contactor | |
| CN107359081A (en) | A kind of method and switching device of motor driving bridging contact on-load switch | |
| CN208401531U (en) | A kind of monitor-type overvoltage protection | |
| CN208873691U (en) | A kind of structure of contact terminal | |
| CN201556590U (en) | Durable circuit breaker | |
| CN205159256U (en) | Novel circuit breaker | |
| CN101587787A (en) | Isolating switch | |
| CN201638770U (en) | Arc guiding structure for small-size breaker | |
| CN2809830Y (en) | Magnetic-quenching arc extinguish device with automatic changeover switch for dual power supplies | |
| CN104241006A (en) | Isolating switch | |
| CN202523659U (en) | Breaker arc-extinguishing apparatus | |
| CN204497143U (en) | A kind of high-pressure vacuum breaker | |
| CN203150470U (en) | Contact mechanism for balloon arc-extinguishing air switch | |
| CN208336083U (en) | A kind of high-efficiency vacuum type breaker | |
| CN102709083A (en) | Mining kilovolt-level double-pole single-breakpoint air isolation reversing switch | |
| CN203055773U (en) | Three-position vacuum interrupter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090121 Effective date of abandoning: 20080225 |