CN106449279A - A DC contactor with auxiliary contacts - Google Patents
A DC contactor with auxiliary contacts Download PDFInfo
- Publication number
- CN106449279A CN106449279A CN201610947762.1A CN201610947762A CN106449279A CN 106449279 A CN106449279 A CN 106449279A CN 201610947762 A CN201610947762 A CN 201610947762A CN 106449279 A CN106449279 A CN 106449279A
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- China
- Prior art keywords
- auxiliary
- contact
- exit
- spring
- contactor
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a DC contactor with auxiliary contacts. The DC contactor comprises a pushing mechanism, a main movable spring having double main movable contacts, and two main leading-out terminals respectively provided with a main static contact. The active spring is arranged on the pushing mechanism to enable the main movable contacts to make contact or separate from the main static contacts when the pushing mechanism acts. The DC contactor also comprises an auxiliary movable spring having double auxiliary movable contacts and at least two auxiliary leading-out terminals respectively provided with an auxiliary static contact. The auxiliary movable spring is also arranged on the pushing mechanism to enable the auxiliary movable contacts to make contact or separate from the auxiliary static contacts when the pushing mechanism acts. By changing an original microswitch into an auxiliary contact structure, where pushing is directly carried out by the pushing mechanism, the DC contactor has the advantages of being simple in structure, high in reliability and high in main contact load and can design various load types and contact types.
Description
Technical field
The present invention relates to a kind of D.C. contactor, more particularly to a kind of D.C. contactor with auxiliary contact.
Background technology
Catalyst is a kind of control apparatus of automatization, and it is to flow through current induced magnetic field using coil, makes contact closure,
To reach the electrical equipment controlling load.
D.C. contactor generally includes and (includes master for connecting the main contacts loading to realize load is carried out break-make control
Movable contact and main stationary contact), wherein main stationary contact is installed on main exit, and active contact is to be located on dynamic spring and be arranged on to push away
On motivation structure, when coil stimulating, pushing mechanism drives dynamic spring motion, so that active contact is contacted with main stationary contact.Prior art
This D.C. contactor in order to detect the break-make situation of main contacts, be usually installed with a microswitch, microswitch is
It is contained in the correspondence position in D.C. contactor, then equipped with a moving arm on pushing mechanism, when pushing mechanism drives dynamic spring motion
When so that active contact is contacted with main stationary contact, pushing mechanism drives moving arm to move simultaneously, touches microswitch by moving arm
Swing arm, so that microswitch is switched on or switched off, signal be switched on or switched off to microswitch by the circuit board of D.C. contactor
Detection, thus realize the detection to main contacts break-make situation.This of prior art realizes auxiliary contact work(using microswitch
The D.C. contactor of energy is primarily present following drawback：
1st, realize the function of auxiliary contact by pushing mechanism and microswitch, too complicated in structure, reliability is relatively
Difference；
2 need to be mounted so that microswitch, and product can only adopt plastic package structure, thus it is specified negative to be only applicable to main contacts
Carry relatively low；
3rd, the parameter of auxiliary contact is limited by microswitch；
4th, microswitch needs outside buying.
Content of the invention
It is an object of the invention to overcoming the deficiency of prior art, providing a kind of D.C. contactor with auxiliary contact, leading to
Cross and original microswitch is changed to the auxiliary contact structure that pushed directly on by pushing mechanism, have that structure is simple, reliability is high,
Main contacts load is higher and can design multiple loadtypes and the feature of contact types.
The technical solution adopted for the present invention to solve the technical problems is：A kind of D.C. contactor with auxiliary contact, bag
Include pushing mechanism, there is the active spring of double active contacts and two main exits being each configured with main stationary contact, described active
Spring is arranged on pushing mechanism to make in pushing mechanism action active contact be contacted with main stationary contact or to separate；Described direct current connects
The auxiliary that tentaculum also includes having double auxiliary movable contacts moves the auxiliary exit that spring and at least two is each configured with auxiliary stationary contact,
Described auxiliary is moved spring and is also mounted on pushing mechanism, and makes also to make auxiliary movable contact connect with auxiliary stationary contact during pushing mechanism action
Touch or separate.
It is set to normally opened structure, when pushing mechanism action makes active contact quiet with master between described active contact and main stationary contact
During contact, auxiliary movable contact during described pushing mechanism action, is also made to contact with auxiliary stationary contact or separate.
Described auxiliary exit is four, and two of which auxiliary exit is set to assist normally opened exit, and two other is auxiliary
Exit is helped to be set to assist normally closed exit, two assist the auxiliary that normally opened exit is separately positioned on corresponding to the dynamic spring of auxiliary to move
At the position of contact, and this position is on the moving direction that pushing mechanism makes main contacts contact.
Described auxiliary exit is two, and this two auxiliary exits are set to assist normally opened exit, and two auxiliary are normally opened
Exit is separately positioned at the position corresponding to the auxiliary movable contact of the dynamic spring of auxiliary, and this position is to make main touching in pushing mechanism
On the moving direction of point contact.
Described auxiliary exit is two, and this two auxiliary exits are set to assist normally closed exit, and two auxiliary are normally closed
Exit is separately positioned at the position corresponding to the auxiliary movable contact of the dynamic spring of auxiliary, and this position is to make main touching in pushing mechanism
On the detached moving direction of point.
Described D.C. contactor also includes case, and described main exit and the normally opened exit of auxiliary are separately mounted to case
On, make active contact, main stationary contact, auxiliary movable contact and auxiliary stationary contact all be contained in the intracavity of case.
Described case is provided with step, described main exit and assist normally opened exit to be separately mounted to case upper and lower
At rank, so that the cooperation position of active contact and main stationary contact, auxiliary movable contact are with the cooperation position assisting stationary contact respectively
It is in the space being separated by step.
Described case is ceramic case.
Described active spring and the dynamic spring of auxiliary are yi word pattern structure, and active spring is big with the dynamic spring projection in the plane of auxiliary
Cause in vertical state.
Described pushing mechanism includes pusher seat, catch bar and U-shaped basket, and described pusher seat is fixed on one end of catch bar, U-shaped
Basket is arranged in pusher seat, and described auxiliary is moved spring and is fixed in pusher seat, and described active spring is arranged on U-shaped basket by contact spring
Interior, against active spring, the other end is against in pusher seat for one end of contact spring.
It is to have resilient flake structure that described auxiliary moves spring, realizes auxiliary contact with the elastic deformation using the dynamic spring of auxiliary
Overtravel.
Compared with prior art, the invention has the beneficial effects as follows：
1st, the present invention has the auxiliary of double auxiliary movable contacts and moves spring and extremely due to employing to be additionally provided with D.C. contactor
Few two are each configured with assisting the auxiliary exit of stationary contact, and the dynamic spring of auxiliary is also mounted on pushing mechanism, and makes pushing mechanism
Also auxiliary movable contact is made to contact with auxiliary stationary contact or separate during action, the present invention is directly to increase auxiliary on pushing mechanism to move
Spring, then one group or two groups auxiliary stationary contact is increased on exit, realize the function of one group or two groups auxiliary contact, be compared to
Original microswitch pattern, has the characteristics that structure is simpler, reliability is higher.
2nd, this structure of the present invention can design the auxiliary contact of multiple loadtypes and contact types, can adopt one
Organize normally opened auxiliary contact or normally closed auxiliary contact realizes the function of synchronous monitoring main contacts break-make it is also possible to normally opened auxiliary using one group
Help contact or normally closed auxiliary contact to realize other circuit functions, such as power saving function etc., can also be touched using two groups of auxiliary respectively
Point (one group of normally opened auxiliary contact and one group of normally closed auxiliary contact) to be realized synchronous monitoring main contacts break-make simultaneously and its to realize electricity
Normally opened one end and normally closed one end in auxiliary exit can also be linked together, form conversion by the functions such as road energy-conservation
Auxiliary contact.
3rd, this scheme of the present invention, can either adopt plastic package structure, be adapted to main contacts nominal load relatively low when make
With；Ceramic structure can be adopted, by auxiliary contact and main contacts all welded seals in ceramic cavity, to be adapted to main contacts again
Use when load is higher.
Below in conjunction with drawings and Examples, the present invention is described in further detail；But a kind of band auxiliary contact of the present invention
D.C. contactor be not limited to embodiment.
Brief description
Fig. 1 is the schematic diagram of the sectional perspective construction of the embodiment present invention；
Fig. 2 is the top view of the local structure (containing ceramic case) of the embodiment present invention；
Fig. 3 is the sectional view of the line A-A along along Fig. 2；
Fig. 4 is the sectional view of the line B-B along along Fig. 2；
Fig. 5 is the C portion enlarged diagram in Fig. 4；
Fig. 6 is the top view of the local structure (not containing ceramic case to use and its U-shaped basket) of the embodiment present invention；
Fig. 7 is the sectional view of the line D-D along along Fig. 6；
Fig. 8 is the sectional view of the E-E line along along Fig. 6.
Specific embodiment
Embodiment
Referring to shown in Fig. 1 to Fig. 8, a kind of D.C. contactor with auxiliary contact of the present invention, including pushing mechanism 1, tool
There are the active spring 2 of double active contacts and two main exits 3 being each configured with main stationary contact, active contact can integrally be set
Put on active spring 2 or single part is arranged on active spring 2, the present embodiment is wholely set using active contact
On active spring 2, equally, main stationary contact can be integrally disposed upon on main exit 3 or single part is arranged on
On main exit 3, the present embodiment is integrally disposed upon on main exit 3 using main stationary contact, and described active spring 2 is arranged on promotion machine
To make in pushing mechanism 1 action active contact contact with main stationary contact or to separate on structure 1；Described D.C. contactor also includes tool
The auxiliary having double auxiliary movable contacts 41 is moved spring 4 and at least two and is each configured with assisting the auxiliary exit of stationary contact, described auxiliary
Dynamic spring 4 is also mounted on pushing mechanism 1, and makes also to make auxiliary movable contact 41 contact with auxiliary stationary contact during pushing mechanism 1 action
Or separate；Likewise, auxiliary movable contact 41 can be integrally disposed upon on the dynamic spring 4 of auxiliary or single part installation
On the dynamic spring 4 of auxiliary, the present embodiment is arranged on for independent part on the dynamic spring 4 of auxiliary using auxiliary movable contact 41, assists stationary contact
Point can also be integrally disposed upon on auxiliary exit or single part is arranged on auxiliary exit, this enforcement
Example is integrally disposed upon on auxiliary exit using auxiliary stationary contact.
In the present embodiment, between active contact and main stationary contact, it is set to normally opened structure, when pushing mechanism 1 action makes actively to touch
When point is contacted with main stationary contact, auxiliary movable contact 41 during described pushing mechanism 1 action, is also made to contact with auxiliary stationary contact or separate.
In the present embodiment, auxiliary exit is four, and two of which auxiliary exit is set to assist normally opened exit 51, separately
Outer two auxiliary exits are set to assist normally closed exit 52, and two assist normally opened exit 51 to be separately positioned on corresponding to auxiliary
At the position of auxiliary movable contact 41 of dynamic spring, and this position is on the moving direction that pushing mechanism makes active stationary contact contact.
In the present embodiment, D.C. contactor also includes ceramic case 6, described main exit 3 and the normally opened exit 51 of auxiliary
It is separately mounted on ceramic case 6, make active contact, main stationary contact, auxiliary movable contact and auxiliary stationary contact all be contained in pottery
The ceramic intracavity of case 6.
In the present embodiment, ceramic case 6 is provided with step 61, and described main exit 3 and the normally opened exit 51 of auxiliary are pacified respectively
It is contained at the upper and lower step of case, i.e. main exit 3 is arranged at the top bar 62 of ceramic case 6, assist normally opened exit
51 be arranged on ceramic case 6 get out of a predicament or an embarrassing situation at 63 so that the cooperation position of active contact and main stationary contact, auxiliary movable contact with
The cooperation position of auxiliary stationary contact is in the space being separated by step 61 respectively.
In the present embodiment, active spring 2 and the dynamic spring 4 of auxiliary are yi word pattern structure, and active spring 2 and the dynamic spring 4 of auxiliary are flat
Projection on face is substantially in vertical state.
In the present embodiment, pushing mechanism 1 includes pusher seat 11, catch bar 12 and U-shaped basket (not shown), described promotion
Seat 11 is fixed on one end of catch bar 12, and the other end of catch bar 12 connects dynamic iron core 13, and U-shaped basket is arranged in pusher seat 11,
Described auxiliary is moved spring 4 and is fixed in pusher seat 11, and described active spring 2 is arranged in U-shaped basket by contact spring 21, contact spring
Against active spring 2, the other end is against in pusher seat 11 for 21 one end, and active spring 2 is against on U-shaped basket simultaneously, using contact spring
21 overtravels realizing main contacts.
In the present embodiment, the dynamic spring 4 of auxiliary is to have resilient flake structure, real with the elastic deformation using the dynamic spring 4 of auxiliary
The overtravel of existing auxiliary contact.
A kind of D.C. contactor with auxiliary contact of the present invention, employs to be provided with D.C. contactor and has double auxiliary
The auxiliary of movable contact is moved spring 4 and at least two and is each configured with assisting the auxiliary exit of stationary contact, and the dynamic spring 4 of auxiliary is also mounted at and pushes away
On motivation structure 1, and make during pushing mechanism 1 action, also to make auxiliary movable contact contact with auxiliary stationary contact or separate, the present invention is implemented
Example is directly to increase the dynamic spring 4 of auxiliary on pushing mechanism 1, then to increase by two groups of auxiliary stationary contacts on exit (only can also be
Have one group), realize the function of two groups of auxiliary contact, be compared to original microswitch pattern, have structure simpler, can
By the higher feature of property.
A kind of D.C. contactor with auxiliary contact of the present invention, can design the auxiliary of multiple loadtypes and contact types
Help contact, the function of synchronous monitoring main contacts break-make can be realized using one group of normally opened auxiliary contact or normally closed auxiliary contact,
Other circuit functions can be realized using one group of normally opened auxiliary contact or normally closed auxiliary contact, such as power saving function etc., acceptable
Come simultaneously real respectively using two groups of auxiliary contact (as one group of normally opened auxiliary contact and one group of normally closed auxiliary contact of the present embodiment)
Show synchronous monitoring main contacts break-make and its realize the functions such as circuit energy-conservation, or be all used for realizing synchronous monitoring main contacts break-make
Reach the purpose of dual fail-safe, normally opened one end and normally closed one end in auxiliary exit can also be linked together, be formed and turn
The auxiliary contact changing.When only with one group of normally opened auxiliary contact, auxiliary exit is two, and this two auxiliary exits are set to
Assist normally opened exit, two assist the position that normally opened exit is separately positioned on the auxiliary movable contact corresponding to the dynamic spring of auxiliary
Place, and this position is on the moving direction that pushing mechanism makes main contacts contact.When only with one group of normally closed auxiliary contact, auxiliary
Exit is helped also to be two, this two auxiliary exits are set to assist normally closed exit, two assist normally closed exit to set respectively
Put at the position of the auxiliary movable contact corresponding to the dynamic spring of auxiliary, and this position is to make the detached movement of main contacts in pushing mechanism
On direction.
In the present embodiment, it is to adopt ceramic structure, by auxiliary contact and main contacts all welded seals in ceramic cavity, energy
Enough it is adapted to main contacts load higher.When being applied to main contacts nominal load and being relatively low, can select to adopt plastic package structure.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention.Although the present invention
Disclosed above with preferred embodiment, but it is not limited to the present invention.Any those of ordinary skill in the art, are not taking off
In the case of technical solution of the present invention scope, all can be utilized the technology contents of the disclosure above that technical solution of the present invention is made perhaps
How possible variation and modification, or it is revised as equivalents Equivalent embodiments.Therefore, every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should fall
In the range of technical solution of the present invention protection.
Claims (11)
1. a kind of D.C. contactor with auxiliary contact, the active spring that including pushing mechanism, there are double active contacts and two points
It is not configured with the main exit of main stationary contact, described active spring is arranged on pushing mechanism to make in pushing mechanism action actively
Contact is contacted with main stationary contact or separates；It is characterized in that：Described D.C. contactor also includes thering is the auxiliary of double auxiliary movable contacts
Power-assist spring and at least two is each configured with assisting the auxiliary exit of stationary contact, and described auxiliary is moved spring and is also mounted at pushing mechanism
On, and make during pushing mechanism action, also to make auxiliary movable contact contact with auxiliary stationary contact or separate.
2. the D.C. contactor with auxiliary contact according to claim 1 it is characterised in that：Described active contact is quiet with master
It is set to normally opened structure, when pushing mechanism action makes active contact contact with main stationary contact, described pushing mechanism moves between contact
Also auxiliary movable contact is made to contact with auxiliary stationary contact or separate when making.
3. the D.C. contactor with auxiliary contact according to claim 2 it is characterised in that：Described auxiliary exit is four
Individual, two of which auxiliary exit is set to assist normally opened exit, and two other auxiliary exit is set to assist normally closed exit,
Two assist normally opened exit to be separately positioned at the position corresponding to the auxiliary movable contact of the dynamic spring of auxiliary, and this position is to push away
Motivation structure makes on the moving direction that main contacts contacts.
4. the D.C. contactor with auxiliary contact according to claim 2 it is characterised in that：Described auxiliary exit is two
Individual, this two auxiliary exits are set to assist normally opened exit, and two assist normally opened exit to be separately positioned on corresponding to auxiliary
At the position of auxiliary movable contact of dynamic spring, and this position is on the moving direction that pushing mechanism makes main contacts contact.
5. the D.C. contactor with auxiliary contact according to claim 2 it is characterised in that：Described auxiliary exit is two
Individual, this two auxiliary exits are set to assist normally closed exit, and two assist normally closed exit to be separately positioned on corresponding to auxiliary
At the position of auxiliary movable contact of dynamic spring, and this position is to make on the detached moving direction of main contacts in pushing mechanism.
6. the D.C. contactor with auxiliary contact according to claim 3 or 4 it is characterised in that：Described D.C. contactor
Also include case, described main exit and assist normally opened exit be separately mounted on case, make active contact, main stationary contact,
Auxiliary movable contact is all contained in the intracavity of case with auxiliary stationary contact.
7. the D.C. contactor with auxiliary contact according to claim 6 it is characterised in that：Described case is provided with step,
Described main exit and the normally opened exit of auxiliary are separately mounted at the upper and lower step of case, so that active contact is quiet with master
The cooperation position of contact, auxiliary movable contact and the cooperation position of auxiliary stationary contact are in the space being separated by step respectively.
8. the D.C. contactor with auxiliary contact according to claim 6 it is characterised in that：Described case is ceramic shield
Shell.
9. the D.C. contactor with auxiliary contact according to claim 1 it is characterised in that：Described active spring and auxiliary are dynamic
Spring is yi word pattern structure, and active spring is with the dynamic spring projection in the plane of auxiliary substantially in vertical state.
10. the D.C. contactor with auxiliary contact according to claim 9 it is characterised in that：Described pushing mechanism includes
Pusher seat, catch bar and U-shaped basket, described pusher seat is fixed on one end of catch bar, and U-shaped basket is arranged in pusher seat, described auxiliary
Power-assist spring is fixed in pusher seat, and described active spring is arranged in U-shaped basket by contact spring, and one end of contact spring is against master
Dynamic spring, the other end is against in pusher seat.
11. D.C. contactors with auxiliary contact according to claim 10 it is characterised in that：It is tool that described auxiliary moves spring
Resilient flake structure, realizes the overtravel of auxiliary contact with the elastic deformation using the dynamic spring of auxiliary.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947762.1A CN106449279B (en) | 2016-10-26 | 2016-10-26 | A kind of D.C. contactor with auxiliary contact |
| PCT/CN2017/107668 WO2018077190A1 (en) | 2016-10-26 | 2017-10-25 | Dc contactor having auxiliary contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947762.1A CN106449279B (en) | 2016-10-26 | 2016-10-26 | A kind of D.C. contactor with auxiliary contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106449279A true CN106449279A (en) | 2017-02-22 |
| CN106449279B CN106449279B (en) | 2019-01-01 |
Family
ID=58178766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610947762.1A Active CN106449279B (en) | 2016-10-26 | 2016-10-26 | A kind of D.C. contactor with auxiliary contact |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106449279B (en) |
| WO (1) | WO2018077190A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507739A (en) * | 2017-09-19 | 2017-12-22 | 三友联众集团股份有限公司 | A kind of sealed contact assembly |
| WO2018077190A1 (en) * | 2016-10-26 | 2018-05-03 | 厦门宏发电力电器有限公司 | Dc contactor having auxiliary contact |
| CN108597955A (en) * | 2018-01-23 | 2018-09-28 | 厦门宏发电力电器有限公司 | A kind of high voltage direct current relay with auxiliary contact |
| WO2018205296A1 (en) * | 2017-05-09 | 2018-11-15 | 东莞市三友联众电器有限公司 | Direct current contactor having auxiliary contacts |
| CN109830403A (en) * | 2019-02-12 | 2019-05-31 | 厦门宏发电力电器有限公司 | A kind of high voltage direct current relay |
| CN109887779A (en) * | 2019-04-02 | 2019-06-14 | 浙江众信新能源科技股份有限公司 | A kind of D.C. contactor ceramic seal auxiliary switch |
| CN112309776A (en) * | 2020-11-10 | 2021-02-02 | 东莞市中汇瑞德电子股份有限公司 | High-voltage direct-current relay with auxiliary contacts |
| CN112331525A (en) * | 2020-11-23 | 2021-02-05 | 东莞市中汇瑞德电子股份有限公司 | High-capacity relay with auxiliary contact isolation mechanism |
| CN112435895A (en) * | 2020-12-07 | 2021-03-02 | 东莞市中汇瑞德电子股份有限公司 | High-capacity relay with auxiliary contacts |
| WO2024092956A1 (en) * | 2022-11-04 | 2024-05-10 | 昆山国力电子科技股份有限公司 | Small-size high-voltage direct current contactor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458370B (en) * | 2022-11-09 | 2023-02-03 | 浙江英洛华新能源科技有限公司 | Fixing structure of relay leading-out terminal |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018077190A1 (en) * | 2016-10-26 | 2018-05-03 | 厦门宏发电力电器有限公司 | Dc contactor having auxiliary contact |
| WO2018205296A1 (en) * | 2017-05-09 | 2018-11-15 | 东莞市三友联众电器有限公司 | Direct current contactor having auxiliary contacts |
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| CN108597955A (en) * | 2018-01-23 | 2018-09-28 | 厦门宏发电力电器有限公司 | A kind of high voltage direct current relay with auxiliary contact |
| CN109830403A (en) * | 2019-02-12 | 2019-05-31 | 厦门宏发电力电器有限公司 | A kind of high voltage direct current relay |
| CN109887779A (en) * | 2019-04-02 | 2019-06-14 | 浙江众信新能源科技股份有限公司 | A kind of D.C. contactor ceramic seal auxiliary switch |
| CN109887779B (en) * | 2019-04-02 | 2024-04-09 | 浙江众信新能源科技股份有限公司 | Ceramic sealing auxiliary switch for direct current contactor |
| CN112309776A (en) * | 2020-11-10 | 2021-02-02 | 东莞市中汇瑞德电子股份有限公司 | High-voltage direct-current relay with auxiliary contacts |
| CN112331525A (en) * | 2020-11-23 | 2021-02-05 | 东莞市中汇瑞德电子股份有限公司 | High-capacity relay with auxiliary contact isolation mechanism |
| CN112435895A (en) * | 2020-12-07 | 2021-03-02 | 东莞市中汇瑞德电子股份有限公司 | High-capacity relay with auxiliary contacts |
| WO2024092956A1 (en) * | 2022-11-04 | 2024-05-10 | 昆山国力电子科技股份有限公司 | Small-size high-voltage direct current contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106449279B (en) | 2019-01-01 |
| WO2018077190A1 (en) | 2018-05-03 |
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