CN201629276U - Low voltage bipolar automatic circuit breaker - Google Patents
Low voltage bipolar automatic circuit breaker Download PDFInfo
- Publication number
- CN201629276U CN201629276U CN2009202184131U CN200920218413U CN201629276U CN 201629276 U CN201629276 U CN 201629276U CN 2009202184131 U CN2009202184131 U CN 2009202184131U CN 200920218413 U CN200920218413 U CN 200920218413U CN 201629276 U CN201629276 U CN 201629276U
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- contact
- circuit breaker
- disconnection
- closure
- circuit
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Abstract
A low voltage bipolar automatic circuit breaker is provided with a protected pole and a neutral pole, wherein the protected pole comprises one or a plurality of protection devices for dealing with faults; a contact of the neutral pole is electrically connected with a terminal of the protected pole; while the terminal of the neutral pole is connected to the contact of the protected pole; and the protection devices are connected to a single closing/disconnecting movement mechanism used for disconnecting the contact of the pole.
Description
Technical field
The utility model relates to a kind of low voltage dipole automatic circuit breaker, relates in particular to a kind ofly to have the protected utmost point (or phase) and second neutral pole () dipole automatic circuit breaker or mutually just is typically expressed as the type of 1P1N or 1P+N circuit breaker.
Background technology
The low pressure automatic circuit breaker is the electric device of known type.They are used in the electrical system (for example civilian, industry or commercial) usually, with via circuit breaker automatic disconnection and then make power failure in response to fault state itself, and guarantee protection and user security to electrical system.
Typically, these fault state are short circuit, overload and earth leakage.In order to guarantee protection at these faults, the one or more protection equipment that can distinguish normal running situation and fault state usually and circuit breaker link.These equipment generally include actuator, and this actuator is interfered the motion of circuit breaker along with the failure condition of determining, thereby make motion thread off automatically and make contact disconnect.
The protection equipment of the most frequently used known type is hot equipment of magnetic and differential apparatus, and the hot equipment of magnetic is realized the protection at short circuit and overload, and differential apparatus is grounded earth leakage protective.
One of shortcoming of Fa Xianing is the following fact sometimes, that is: in some applications, protection equipment is by treating that the add-on module that links with circuit breaker forms, to realize concrete defencive function.In practice, circuit breaker and protection equipment are arranged in the independent housing, and these housings have modular predetermined width (DIN (Deutsche industry norm (DIN)) module equals 17.5mm).These housings are linked and be connected to obtain required protection type.
This makes cost increase, because must set in advance connection and the interface arrangement that is suitable for holding a plurality of housings of each equipment and is used to realize be connected with the operability of circuit breaker, thereby needs the corresponding work amount at erection stage.
In addition, even at protection equipment with disconnect parts and be contained under the situation in the same housing, this housing also has relatively large size usually, such as, greater than the width of two standard modules.The protection equipment that also it is emphasized that known type need be used for special mechanism that it is connected with the dropout motion, thus make the design of circuit breaker and the equipment that links with it and the implementation phase in the complexity that all becomes.
In this case, the defective of another particular importance is the following fact, that is: according to concrete national implementation procedure, the protected utmost point and the neutral pole position in the housing of circuit breaker can change; Such as, in some countries, with regard to the front view of circuit breaker, suppose that neutral pole (" neutral phase ") is arranged in the right side, the then protected utmost point or be arranged in mutually the left side, then just in time opposite in other country.For the manufacturer, this can cause sizable complexity, because according to mutually and the position of neutral pole, and the layout of essential modification circuit breaker, especially the layout of motion of threading off, thus increasing one's load aspect production cost, assembling, code administration and the stock.
The utility model content
Thereby main task of the present utility model provides a kind of low voltage dipole automatic circuit breaker that can overcome above-mentioned defective.
This task realizes that via a kind of such low voltage dipole automatic circuit breaker it is characterized in that, it comprises the housing of being made by insulating material, and described housing is equipped with:
-the first utmost point, described first utmost point comprise can coupled to each other/decoupling zero first contact and second contact, be used for carrying out the first terminal and second terminal that input and output are connected with the circuit related with described circuit breaker and be positioned at the related described circuit of described circuit breaker on, at least one electric protective equipment of reply fault;
-the second neutral pole, described second neutral pole comprise can coupled to each other/decoupling zero the 3rd contact with the 4th contact and be used for carrying out the 3rd terminal and the 4th terminal that input and output are connected with the described circuit related with described circuit breaker;
-closure/disconnection motion, described closure/disconnection motion functionally are attached to described first utmost point and described second neutral pole, to carry out the coupling/decoupling zero of described first contact and described second contact and described the 3rd contact and described the 4th contact; Wherein, described the first terminal and described second terminal are electrically connected to described the 3rd contact and described the 4th contact by means of first conductor and second conductor respectively, and described the 3rd terminal and described the 4th terminal are electrically connected to described first contact and described second contact by means of the 3rd conductor and the 4th conductor respectively.Preferably, described first utmost point comprises the first short-circuit protection equipment and second overload protection device, described circuit breaker comprises the 3rd differential protection device, and described the 3rd differential protection device and described first utmost point and described second neutral pole functionally link and be suitable for the differential current between described first utmost point and described second neutral pole is detected; The described first short-circuit protection equipment, second overload protection device and the 3rd differential protection device are suitable for taking place in the described circuit related with described circuit breaker after corresponding first failure condition, second failure condition or the 3rd failure condition, make described closure/disconnection motion dropout and make described first contact and described second contact and described the 3rd contact and the disconnection of described the 4th contact.Preferably, described circuit breaker comprises coupling arrangement, and described coupling arrangement functionally is connected to the described first short-circuit protection equipment, second overload protection device and the 3rd differential protection device with described closure/disconnection motion.Preferably, described closure/disconnection motion comprises first release lever, described first release lever is suitable for making described closure/disconnection motion to thread off, thereby allows described first contact and described second contact and described the 3rd contact and described the 4th contact automatic disconnection.Preferably; described coupling arrangement comprises first trip shaft and second interference lever; described first trip shaft functionally is connected to the described first short-circuit protection equipment and second overload protection device with described closure/disconnection motion, and described second interference lever functionally is connected to described the 3rd differential protection device with described closure/disconnection motion.Preferably, described first trip shaft and described second interference lever functionally are connected to described first release lever.Preferably, the described first short-circuit protection equipment and second overload protection device are stacked on top of each other, and are arranged in one side of described closure/disconnection motion.Preferably, described the 3rd differential protection device is positioned to longitudinal axis and the contiguous described closure/disconnection motion transverse to described circuit breaker.Preferably, the width of described circuit breaker equals two DIN standard modules.
Description of drawings
From the description of that illustrate by way of example in the accompanying drawings, preferred according to some of circuit breaker of the present utility model but non-exclusive execution mode, further characteristic and advantage will become more clear, wherein:
-Fig. 1 is the stereogram according to automatic circuit breaker of the present utility model;
-Fig. 2 is the end view of the circuit breaker of Fig. 1;
-Fig. 3 is the functional schematic diagram of the circuit breaker of Fig. 1;
-Fig. 4 is first end view of some parts of the circuit breaker of Fig. 1;
-Fig. 5 is second end view of some parts of the circuit breaker of Fig. 1;
-Fig. 6 a, 6b, 7a, 7b, 8,9 and 10 are detail drawings that the operating process of circuit breaker is shown;
-Figure 11 is the front view of the circuit breaker of Fig. 1.
Embodiment
With reference to accompanying drawing, comprise the housing of making by insulating material 10 according to low pressure automatic circuit breaker 1 of the present utility model, ccontaining first utmost point 20 of described housing (or protection phase) and neutral pole 30 (" mutually neutral "), described neutral pole is called second utmost point 30 hereinafter.The rear section 11 of housing 10 suitably is shaped and has and is used for the device of clasp joint to DIN (Deutsche industry norm (DIN)) guiding piece.In addition, the forward part of housing 10 is suitable for being attached to the lid (not shown) that is used for complete closed circuit breaker itself.
First utmost point 20 comprises: but can be coupled each other/first contact 21 and second contact 22 of decoupling zero; The come-at-able the first terminal 90 and second terminal 91 via housing 10 are used for the circuit (not shown) related with circuit breaker 1 and import and connect and output connects; With at least one electric fault protection equipment 50, described electric fault protection equipment is positioned on the described circuit related with circuit breaker 1.
And then second utmost point or neutral pole 30 comprise: but can be coupled each other/the 3rd contact 31 of decoupling zero and the 4th contact 32 (in Fig. 3 schematically illustrated and be equal to substantially contact 22); Equally via housing 10 come-at-able the 3rd terminal 92 and the 4th terminals 93, be used for being connected with the circuit input related and exporting connection with circuit breaker 1.
Preferably, contact 22 and 32 is fixed, and contact 21 and 31 can be moved between open position and make position, in contact 21 described in the described open position and 31 and corresponding fixed contact decoupling zero, and is coupled with described fixed contact in contact 21 described in the described make position and 31.
Advantageously, in according to circuit breaker 1 of the present utility model, the first terminal 90 is electrically connected to the 3rd contact 31, the second terminals 91 by means of first conductor 94 and is electrically connected to the 4th contact 32 by means of second conductor 95.The 3rd terminal 92 is electrically connected to first contact, 21, the four terminals 93 by means of the 3rd conductor 96 and is electrically connected to second contact 22 by means of the 4th conductor 97.
Conductor 94-97 can be made of one or more elements connected to one another.Particularly, as illustrating for example among Figure 11, first conductor 94 comprises that one end thereof is connected to the section of terminal 90, the middle part of laterally extending with respect to the position of terminal 90 and 92, with the second L shaped end that is connected to flexible woven fabric strip 98, described pliable and tough woven fabric strip 98 is connected to movable contact 31 according to well-known form.Such as, the second L shaped conductor 95 has an end that is connected to second terminal 91 and the other end that is connected to another conductive section 99, and described another conductive section 99 is electrically connected to fixed contact 32.
Such as, the 3rd conductor 96 and then have the first L shaped section, described first section has the first end that is connected to the 3rd terminal 92 and is connected to the second end of conductor 101, and described conductor 101 is electrically connected to movable contact 21.More detailed as from following description, becoming, such as, place between conductor 101 and the movable contact 21 such as the protection equipment at fault above-mentioned equipment 50, one or more.
Have such as, the 4th conductor 97 and to be configured as L shaped first section closely similar with first section of conductor 95, an end of described first section is connected to terminal 93, the second end is connected to conductor 102, and described conductor 102 is electrically connected to fixed contact 22.
Thus; in circuit breaker 1; contact 20 between realize mutually that in protection phase terminal 20-neutral contact 30 and neutral terminal 30-protection braiding is flexible coupling (braided connection), thereby make neutral pole 20 and 30 position realization electric conversion mutually, but the mechanical part maintenance is roughly constant.
According to circuit breaker of the present utility model in fact be suitable for by circuit breaker itself in response to fault state automatic disconnection and then interruption of power supply guarantee the protection and the user security of electrical system (such as family expenses, industry or commercialization), the normally short circuit of described fault state, overload or earth leakage.
For this reason, first utmost point 20 comprises the first short-circuit protection equipment 50 and second overload protection device 60.
This short-circuit protection equipment 50 is well-known types; and generally include magnetic actuator (by coil, removable iron core, secured core, plug-in strip; perhaps more generally; pin and spring constitute), described magnetic actuator is suitable for occurring short circuit and breaks down and make motion 40 thread off, make described first contact 21 and 22 disconnections of second contact after the situation and make described the 3rd contact 31 and 32 disconnections of the 4th contact in because of the circuit related with circuit breaker 1.
And then; the second protection equipment 60 comprises thermal actuator; described thermal actuator generally includes bimetal piece; and described thermal actuator is when being suitable in detecting because of circuit occurring overload and causing fault state, make motion 40 thread off and make described first contact 21 and the 3rd contact 31 respectively with described second contact 22 and 32 decoupling zeros of the 4th contact.
The first short-circuit protection equipment 50 and second overload protection device 60 preferably merge each other, and constitute the hot equipment of magnetic.In addition; what need indicate is; protection equipment 60 be calibrated to be used for taking place interfering when intensity is not high especially, that life period is long overload in; equipment 50 and 55 is except interfering short trouble, and they can also be interfered when having the very short overload of more high strength, time of occurrence.
In addition, automatic circuit breaker comprises the coupling arrangement that closure/disconnection motion 40 functionally is connected to the first protection equipment 50, the second protection equipment 60 and the 3rd protection equipment 70.From in essence; different with the circuit breaker of known type; protection equipment 50,60 and 70 mechanical pulsing are passed to the dropout motion via single mechanism, thereby all need the traditional scheme of special mechanism to compare with each protection equipment, have simplified the structure of circuit breaker greatly.
With reference to Fig. 6-10, will be described in some configurations that in circuit breaker, realize the automatic disconnection operation according to of the present utility model below.
As discussed previously, the execution mode of closure/disconnection motion comprises first release lever 41 that is suitable for by the 3rd clasp joint bar 43 being disengaged make same motion 40 to be threaded off aptly, thereby allows described contact 21,22 and 31,32 automatic disconnections.Such as, coupling arrangement comprises first trip shaft 81 that described closure/disconnection motion 40 functionally is connected to the described first protection equipment 50 and the second protection equipment 60.According to this execution mode, coupling arrangement further comprises second interference lever 82 of the 3rd protection equipment 70 that closure/disconnection motion 40 functionally is connected to.In other words; coupling arrangement is such as constituting single mechanical interface via first trip shaft 81 and second interference lever 82; by described single mechanical interface; the mechanical pulsing that is produced when having the corresponding failure situation by each protection equipment 50,60,70 is transferred into closure/disconnection motion 40, thereby such as acting on the release lever 41.
(Fig. 6 a, 6b), closure/disconnection motion 40 is retained as and is locked in make position so that the 3rd clasp joint bar 43 and first release lever 41 interact in the situation of breaker closing and when not having fault.Particularly, according to this execution mode, an end of bar 43 is engaged to by suitable projection in the body of bar 41, and consequently the rotation of described bar is stoped (and stoping circuit breaker therefore to be threaded off).
Be illustrated in the operation of automatic disconnection under the situation of the fault that generation causes because of short circuit with reference to Fig. 6 a, 6b and 7a, 7b.The first protection equipment 50 comprises the plug-in strip 501 that is connected to movable core.Under normal condition (see Fig. 6 a), the part of plug-in strip 501 be positioned first trip shaft 81 first extension 810 near.
Under the situation of the fault that takes place to cause because of short circuit, protection equipment 50 or 55 is interfered, thereby also therefore makes the plug-in strip 501 that links with it move (see Fig. 7 a, there is shown the motion of plug-in strip 501) the inside traction of movable core.Because this motion, plug-in strip 501 act on first extension 810 of the axle 81 of himself pivotal point 815 rotations.Axle 81 has second extension 811 that is integral and suitably is shaped with it.Because the rotation of axle 81, second extension 811 and first release lever 41 interact, thereby make first release lever 41 around himself pivot 418 rotation.The result, release lever 41 and the 3rd clasp joint bar 43 are disengaged, thereby allow closure/disconnection motion 40 to move and release, described closure/disconnection motion 40 jumps to open position (Fig. 7 b), thereby moving contact 21,31 and corresponding fixed contact were opened in 22,32 minutes.
Be illustrated in automatic disconnection operation under the situation of the fault that generation causes because of overcurrent with reference to Fig. 6 a, 6b, 7 and 8.As shown, the second protection equipment 60 comprises the bimetallic plates that are suitable for because of the bending of the overcurrent in the circuit.(see figure 6) under normal condition, the part of plate 60 be positioned first trip shaft 81 the 3rd extension 812 near.
Under the situation of the fault that takes place to cause because of overload, protection equipment 60 is interfered (see Fig. 8, there is shown the motion of plate 60) by the flexing of bimetallic plates.Because this motion, plate 60 act on the extension 812 of the axle 81 of himself pivotal point 815 rotations.Because this rotation, second extension 811 of axle 81 and first release lever 41 interact, thereby make motion 40 dropouts as previously mentioned and make the contact automatic disconnection.
Be illustrated in automatic disconnection operation under the situation of the fault that generation causes because of earth leakage with reference to Fig. 9 and 10.The 3rd protection equipment 70 comprise be suitable for because of earth leakage so that because of and the conductor that links of the utmost point between the piston 701 that slides of the imbalance of electric current.(see figure 9) under normal condition, an end of piston 701 is positioned near the arm 822 of second interference lever 82.Interference lever 82 suitably is articulated in a little 820, can puts 820 rotations and be maintained at off-position by suitable spring with respect to this.Second interference lever 82 further has the coupling arrangement 821 that connects with first release lever 41.Under the situation illustrated in the accompanying drawings, interference device is made of the part 410 interactional protruding 821 that is suitable for release lever 41.
Under the situation of the fault that takes place to cause because of earth leakage, protection equipment 70 is interfered, thereby makes the outer side shifting (see Figure 10, there is shown the moving right of piston 701) of piston 701 towards relay.Because this motion, piston 701 act on the arm 822 of the bar 82 of himself pivotal point 820 rotations.Because this rotation, the projection 821 of interference lever 82 and the part of first release lever 41 410 interact, thereby make contact rotation and automatic disconnection as previously mentioned.
Except from mechanical angle read fortune when simplifying, can constitute in very compact mode by each parts suitably being positioned in the housing 10 according to circuit breaker of the present utility model.
Such as, with reference to Fig. 3, first utmost point 20 and second utmost point 30 are positioned at left side and the right side of circuit breaker 1 with respect to the longitudinal axis 100 of its front view aptly with symmetric mode.Thereby closure/disconnection motion 40 can be advantageously placed in the middle with respect to described first utmost point 20 and second utmost point 30.
Particularly, the first protection equipment 50 and the second protection equipment 60 are stacked on top of each other in first utmost point 20, and arrange in one side of described closure/disconnection motion 40.More specifically, the equipment 50 and 60 that is used for magnetic heat protection is combined into monolithic entity (therefore illustrating with the individual feature piece at Fig. 3) usually and is positioned described utmost point place, is in the place ahead with respect to the front view of circuit breaker 1.And then the 3rd protection equipment 70 is positioned to transverse to longitudinal axis 100 and contiguous closure/disconnection motion 40.In other words, with regard to the front view of circuit breaker, the 3rd protection equipment 70 is positioned to be lower than the first protection equipment 50 and the second protection equipment 60 and motion 40.
Formed structure is very reasonable and compact.The layout of parts in housing 10 be symmetry roughly in fact, and makes the volume inside of housing own take to be able to optimization.Therefore, size that can limiting circuit breaker; Particularly, width becomes and equals two DIN standard modules (35mm), thereby sees to have substantial advantage from the modularization angle.
Based on foregoing as seen, circuit breaker 1 has been realized its default task, thereby allows the original multiple function that realizes that becomes of the parts that reduce with quantity and reduction.
Particularly; because neutral 30 contact mutually is connected to protection 20 terminal mutually; and protection 20 contact mutually is connected to neutral 30 terminal mutually; so it is different with the scheme of known type; can utilize roughly the same circuit breaker in the application scenario on the left of neutral pole is arranged on the application scenario on right side and is arranged on, particularly be identical dropout motion.
In addition, between protection equipment and closure/disconnection motion, use single coupling mechanism to make it possible to simplify the structure of circuit breaker itself, can have FR protection (magnetic, heat and differential) simultaneously.
And, all need special mechanism and/or needs to use the circuit breaker of prior art of add-on module different with every kind of protection, the single coupling mechanism of use makes it possible to further reduce production costs between protection equipment and cut-off/close motion.
Should be pointed out that in circuit breaker 1, can in single housing, gather multiple functional, thereby implement and installation cost aspect can save.And, because parts are very compact and reasonably be arranged in the housing, so limited the size of housing.Particularly, thus can realize that its width equals the circuit breaker that two DIN standard modules and the two poles of the earth all are protected and has substantial advantage aspect reasonability of installing and the modularization.
Based on given description, other characteristic, remodeling or improvement are possible and are tangible those of ordinary skills.Thereby these characteristics, remodeling and improvement should be regarded a part of the present utility model as.In practice, material that is adopted and size and possible form can change with state of the art as required.
Claims (9)
1. a low voltage dipole automatic circuit breaker (1) is characterized in that, it comprises the housing of being made by insulating material (10), and described housing is ccontaining:
-the first utmost point (20), described first utmost point comprise can coupled to each other/decoupling zero first contact (21) and second contact (22), be used for carrying out the first terminal (90) and second terminal (91) that input and output are connected with the circuit related with described circuit breaker (1) and be positioned at the related described circuit of described circuit breaker (1) on, at least one electric protective equipment of reply fault;
-the second neutral pole (30), described second neutral pole comprise can coupled to each other/decoupling zero the 3rd contact (31) with the 4th contact (32) and be used for carrying out the 3rd terminal (92) and the 4th terminal (93) that input and output are connected with the described circuit related with described circuit breaker (1);
-closure/disconnection motion (40), described closure/disconnection motion functionally is attached to described first utmost point (20) and described second neutral pole (30), to carry out the coupling/decoupling zero of described first contact (21) and described second contact (22) and described the 3rd contact (31) and described the 4th contact (32); Wherein, described the first terminal (90) and described second terminal (91) are electrically connected to described the 3rd contact (31) and described the 4th contact (32) by means of first conductor (94) and second conductor (95) respectively, and described the 3rd terminal (92) and described the 4th terminal (93) are electrically connected to described first contact (21) and described second contact (22) by means of the 3rd conductor (96) and the 4th conductor (97) respectively.
2. circuit breaker according to claim 1 (1), it is characterized in that, described first utmost point (20) comprises the first short-circuit protection equipment (50) and second overload protection device (60), described circuit breaker (1) comprises the 3rd differential protection device (70), and described the 3rd differential protection device and described first utmost point (20) and described second neutral pole (30) functionally link and be suitable for the differential current between described first utmost point (20) and described second neutral pole (30) is detected;
The described first short-circuit protection equipment (50), second overload protection device (60) and the 3rd differential protection device (70) are suitable in the described circuit related with described circuit breaker (1) taking place after corresponding first failure condition, second failure condition or the 3rd failure condition, described closure/disconnections motion (40) is threaded off and make described first contact (21) and described second contact (22) and described the 3rd contact (31) and described the 4th contact (32) disconnection.
3. circuit breaker according to claim 2 (1); it is characterized in that; it comprises coupling arrangement, and described coupling arrangement functionally is connected to the described first short-circuit protection equipment (50), second overload protection device (60) and the 3rd differential protection device (70) with described closure/disconnection motion (40).
4. circuit breaker according to claim 3 (1), it is characterized in that, described closure/disconnection motion (40) comprises first release lever (41), described first release lever is suitable for making described closure/disconnection motion (40) to thread off, thereby allows described first contact (21) and described second contact (22) and described the 3rd contact (31) and described the 4th contact (32) automatic disconnection.
5. circuit breaker according to claim 4 (1); it is characterized in that; described coupling arrangement comprises first trip shaft (81) and second interference lever (82); described first trip shaft functionally is connected to described first short-circuit protection equipment (50) and second overload protection device (60) with described closure/disconnection motion (40), and described second interference lever functionally is connected to described the 3rd differential protection device (70) with described closure/disconnection motion (40).
6. circuit breaker according to claim 5 (1) is characterized in that, described first trip shaft (81) and described second interference lever (82) functionally are connected to described first release lever (41).
7. circuit breaker according to claim 6 (1) is characterized in that, described first short-circuit protection equipment (50) and second overload protection device (60) are stacked on top of each other, and is arranged in one side of described closure/disconnection motion (40).
8. circuit breaker according to claim 7 (1) is characterized in that, described the 3rd differential protection device (70) is positioned to transverse to the longitudinal axis (100) of described circuit breaker (1) and contiguous described closure/disconnection motion (40).
9. according to the described circuit breaker of aforementioned each claim (1), it is characterized in that its width equals two DIN standard modules.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20080330 ITMI20080330U1 (en) | 2008-10-10 | 2008-10-10 | AUTOMATIC BIPOLAR SWITCH FOR LOW VOLTAGE APPLICATIONS. |
| ITMI2008U000330 | 2008-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629276U true CN201629276U (en) | 2010-11-10 |
Family
ID=43060674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202184131U Expired - Lifetime CN201629276U (en) | 2008-10-10 | 2009-10-10 | Low voltage bipolar automatic circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201629276U (en) |
| IT (1) | ITMI20080330U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568967A (en) * | 2010-11-17 | 2012-07-11 | Abb公司 | Electric switching device |
-
2008
- 2008-10-10 IT ITMI20080330 patent/ITMI20080330U1/en unknown
-
2009
- 2009-10-10 CN CN2009202184131U patent/CN201629276U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568967A (en) * | 2010-11-17 | 2012-07-11 | Abb公司 | Electric switching device |
| CN102568967B (en) * | 2010-11-17 | 2016-02-03 | Abb公司 | Electric switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI20080330U1 (en) | 2010-04-11 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |
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| CX01 | Expiry of patent term |