CN106601562B - Electrothermal relay - Google Patents
Electrothermal relay Download PDFInfo
- Publication number
- CN106601562B CN106601562B CN201510659341.4A CN201510659341A CN106601562B CN 106601562 B CN106601562 B CN 106601562B CN 201510659341 A CN201510659341 A CN 201510659341A CN 106601562 B CN106601562 B CN 106601562B
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- China
- Prior art keywords
- bar
- bimetal leaf
- electrothermal relay
- drift
- tripping mechanism
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/042—Means for indicating condition of the switching device with different indications for different conditions, e.g. contact position, overload, short circuit or earth leakage
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
Embodiment of the disclosure provides a kind of electrothermal relay, comprising: bimetal leaf is configured to deform when super-high-current flows through to trigger tripping mechanism movement；Tripping mechanism is coupled with the bimetal leaf and is configured to the displacement transfer of the bimetal leaf to moving contact, to disconnect the contact between the moving contact and static contact；And drift indicator, it is configured to detect the drift value of the bimetal leaf and visually indicates the position of the bimetal leaf.Electrothermal relay according to an embodiment of the present disclosure can easily indicate the position of bimetal leaf using drift indicator.
Description
Technical field
Embodiment of the present disclosure relates generally to a kind of electrothermal relay, particularly the drift instruction of electrothermal relay.
Background technique
Electrothermal relay is widely used in industry, for implementing effective protection to electrical.Electrothermal relay includes thermal element,
The electric current for flowing into thermal element generates heat, and making to have the bimetal leafs of the different coefficients of expansion, deformation occurs, and deformation pushes connecting rod movement,
Disconnect control circuit, to make contactor power loss, main circuit is disconnected, and realizes that the overload of electric component (such as motor) is protected
Shield.However, the bimetal leaf of electrothermal relay drifts about with aging or the deformation of creep of material, heat is thus seriously affected
The tripping characteristic of relay, prevent electrothermal relay is from normally playing original function.It is desirable to be changed for drifting problem
Into.
Summary of the invention
In view of the above problems, the first purpose of embodiment of the disclosure is to provide a kind of electrothermal relay, at least can
Solve above-mentioned one or more technical problems existing in the prior art.
According to one aspect of the disclosure, a kind of electrothermal relay is provided, comprising: bimetal leaf；With the bimetal leaf coupling
The tripping mechanism of conjunction；Wherein the bimetal leaf is configured to deform when super-high-current flows through to trigger the tripping machine
Structure movement；The tripping mechanism is configured to the deformation according to the bimetal leaf, disconnects connecing between moving contact and static contact
Touching；And drift indicator, it is configured to detect the drift value of the bimetal leaf and indicates the position of the bimetal leaf.
In accordance with an embodiment of the present disclosure, the drift indicator includes the drift for being pivotally mounted to the electrothermal relay
Amount amplification bar, the drift value amplification bar are configured to: when the bimetal leaf drifts about, in response to the bimetal leaf
Drift and pivot.
In accordance with an embodiment of the present disclosure, the drift value amplification bar includes sliding slot, and receiving axis is suitable in the sliding slot, described
Axis is prominent from being configured on the component that the drift in company with the bimetal leaf moves together, and the drift value amplification bar is described
It is pivoted under the action of axis.
In accordance with an embodiment of the present disclosure, the tripping mechanism includes: the first bar for loading the bimetal leaf, in response to institute
It states the deformation of bimetal leaf and translates；The second bar being substantially arranged side by side with first bar；Pivotly with second bar
The third bar of connection, a part installation of the third bar is to first bar, so that in the bi-metal plate deformed by institute
The translational motion for stating the first bar is converted into the rotation of third bar, the 4th bar, be pivotally mounted to electrothermal relay and with it is described
The arrangement of third bar separation, and be configured in response to the rotation of the third bar and rotate and moving contact trigger assembly,
It is configured to the rotation of the 4th bar and triggers the moving contact movement.
In accordance with an embodiment of the present disclosure, second bar is slidably disposed in the electrothermal relay and is configured
It drifts about together with first bar in bimetal leaf drift.
In accordance with an embodiment of the present disclosure, axis is disposed on second bar.
In accordance with an embodiment of the present disclosure, the drift value amplification bar further includes the instruction for indicating the position of the bimetal leaf
Label.
In accordance with an embodiment of the present disclosure, the electrothermal relay is provided with the openning for observing the cue mark, institute
It states openning and is provided with multiple temperature marks, the temperature mark and bimetallic when the electrothermal relay cold conditions at different temperatures
Predeterminated position where piece is corresponding.
In accordance with an embodiment of the present disclosure, the electrothermal relay further includes regulating member, and the regulating member is configured to root
Keep the transmission parts of the tripping mechanism mobile according to the position of the bimetal leaf shown in the drift indicator meaning so that
The predeterminated position of the position of bimetal leaf when restoring to the electrothermal relay cold conditions.
In accordance with an embodiment of the present disclosure, the tripping mechanism includes: the first bar for loading the bimetal leaf；With described
The second bar that one bar is substantially arranged side by side；The third bar being pivotably connected with second bar, a part of the third bar
Installation is to first bar, so that the movement of first bar is converted into turning for third bar in the bi-metal plate deformed
It is dynamic, the 4th bar, the arrangement for being pivotally mounted to electrothermal relay and being separated with the third bar, and be configured in response to
The rotation of the third bar and pivot and moving contact trigger assembly, be configured to the rotation of the 4th bar and trigger
The moving contact movement；The regulating member includes: the rotation that the knob and cam pack are configured to be adapted for knob
Then the 4th bar is pushed to pivot, and then restore the bimetal leaf to described predetermined via the third bar and the first bar
Position.
Electrothermal relay according to an embodiment of the present disclosure can easily indicate the position of bimetal leaf using drift indicator
It sets, user can be adjusted electrothermal relay to appropriate location using measure according to the position of the bimetal leaf of display, to described
Drift compensates.
Detailed description of the invention
Now embodiment of the disclosure will be described with reference to appended attached drawing only by way of example, in which:
Fig. 1 is the schematic diagram of the bimetal leaf course of work of electrothermal relay according to an embodiment of the present disclosure；
Fig. 2 is the schematic diagram of the drift indicator of electrothermal relay according to an embodiment of the present disclosure；
Fig. 3 is the sectional perspective schematic diagram of electrothermal relay according to an embodiment of the present disclosure；
Fig. 4 is the local overlooking schematic diagram of electrothermal relay according to an embodiment of the present disclosure；
Fig. 5 is the partial schematic diagram of the drift regulating member of electrothermal relay according to an embodiment of the present disclosure；And
Fig. 6 is the schematic diagram of mark component according to the exemplary embodiment of the disclosure.
Specific embodiment
Now embodiment of the disclosure is specifically described in conjunction with attached drawing.It should be noted that similar in attached drawing
Component or functional unit may use same number mark.Appended attached drawing is intended only to illustrate embodiment of the disclosure.
Those skilled in the art can obtain substitution skill from the description below on the basis of without departing from disclosure spirit and scope
Art scheme.
The drifting problem of the bimetal leaf of electrothermal relay is a problem for perplexing electrothermal relay field.On the one hand, heat after
With permanent use the deformation of creep can occur for the bimetal leaf of electric appliance.And in order to ensure the sensitivity of electrothermal relay, hot relay
The tripping mechanism of device is critically designed, once the deformation of creep occurs for bimetal leaf, then seriously affects the precision of electrothermal relay.Example
Such as, in some cases, if the deformation of creep occurs for bimetal leaf, when electrothermal relay work, bimetal leaf is in super-high-current
When deforming when flowing through, it may cause and be difficult to trigger tripping mechanism and normally thread off.How to the deformation of creep of electrothermal relay (or
Drift) to compensate be the technical issues of urgent expectation solves.On the other hand, in some applications, since electrothermal relay works
Under the conditions of different temperature, such as the electrothermal relay having works under conditions of down to -25 degrees Celsius, and some electrothermal relays
It is used at a high temperature of 60 degrees Celsius.Bimetal leaf is very sensitive to temperature, and different temperature will cause bimetal leaf different
Deformation.Therefore, dispatch from the factory manufacture electrothermal relay at a temperature of different application, need to reset the initial work of electrothermal relay
Make state.How efficiently to carry out setting to the thermal drift of electrothermal relay is also the technical issues of urgent expectation solves.
The inventor of the disclosure devises a kind of position that can visually indicate bimetal leaf 10 regarding to the issue above
Scheme.By the structure of ingehious design, the drift of bimetal leaf is followed, and indicates the drift of bimetal leaf, thus, it is possible to
Enough positions for easily learning bimetal leaf.After the deviation post for obtaining bimetal leaf, user can take corresponding dynamic
Drift of opposing is compensated or is corrected.
The scheme according to the application is described in detail with reference to the accompanying drawing.It should be understood that attached drawing diagrammatically only shows
The design of the disclosure is gone out, for simplicity, the unrelated feature of inventive concept with the disclosure has been omitted.Fig. 1 is in particular
The schematic diagram in the state that shell of electrothermal relay is removed；Fig. 2 indicator 30 that drifts about in particular is installed in shell
Schematic diagram under state；Fig. 3 drifts about the sectional perspective signal that indicator 30 is installed in the state of electrothermal relay in particular
Figure.
As Figure 1-Figure 5, a kind of electrothermal relay is provided according to one aspect of the disclosure, comprising: bimetal leaf 10, quilt
It is configured to be deformed when super-high-current flows through to trigger the movement of tripping mechanism 20；Tripping mechanism 20, with 10 coupling of bimetal leaf
Merge and be configured to the displacement transfer of bimetal leaf 10 to moving contact, to disconnect the contact between moving contact and static contact；With
And drift indicator 30, it is configured to the drift value of detection bimetal leaf 10 and indicates the position of bimetal leaf 10.
Structure and working principle about bimetal leaf 10 and tripping mechanism 20 be it is well known to those skilled in the art,
Its detailed description is omitted.In the accompanying drawings, a bimetal leaf 10 is diagrammatically illustrated only to illustrate the principle of the disclosure.
In the scheme of the application, the electrothermal relay of the application has been additionally provided in drift indicator 30, and drift about indicator
30 are configured to follow the movement of bimetal leaf 10, and indicate the change in location of bimetal leaf 10.Due to being provided with drift
Indicator 30 is moved, user can easily judge the working condition of electrothermal relay.
In the illustrated embodiment, drift indicator 30 includes the drift value amplification bar for being pivotally mounted to electrothermal relay
32, drift value amplification bar 32 is configured to: when bimetal leaf 10 drifts about, drift value amplifies bar 32 in response to bimetal leaf
10 drift and pivot.Drift value amplification bar 32 is configured to that the translational motion of bimetal leaf 10 is followed to move pivotally, thus
On the one hand the offset that can effectively amplify bimetal leaf 10, on the other hand can neatly arrange offset indicate indicator
In the appropriate position of electrothermal relay shell, convenient for visually showing.
In the illustrated embodiment, drift value amplification bar 32 includes sliding slot 34, and receiving axis 242, axis 242 are suitable in sliding slot 34
Prominent on the component that the drift in company with bimetal leaf 10 moves together from being configured to, drift value amplifies bar 32 in the work of axis 242
It is pivoted with lower.Using sliding slot-axis cooperation pushing structure, the leverage of drift value amplification bar 32 can be efficiently used, is led to
The structure that leverage simplifies drift indicator 30 is crossed, reduces space occupied by drift indicator 30, is not increasing hot relay
In the case where the size of device, the drift instruction of electrothermal relay is realized.
In the illustrated embodiment, tripping mechanism 20 includes: the first bar 22 for loading bimetal leaf 10, in response to bimetallic
The deformation of piece 10 and translate；The second bar 24 being substantially arranged side by side with the first bar 22；Be pivotably connected with the second bar 24
Three bars 26, a part installation of third bar 26 is to the first bar 22, so that transporting the translation of the first bar 22 in bimorph patches deformation
Turn changes the rotation of third bar 26 into, and the 4th bar 28 is pivotally mounted to electrothermal relay and the cloth isolated with third bar 26
It sets, and is configured in response to the rotation of third bar 26 and rotates and moving contact trigger assembly, be configured to the 4th
The rotation of bar 28 and trigger moving contact movement.
In the illustrated embodiment, the second bar 24 is slidably disposed in electrothermal relay and is configured in double changes
Shape piece drifts about when drifting about with the first bar 22 together.In one embodiment, slot, the second bar 24 are provided in the shell of electrothermal relay
It is arranged in slot by floating ground.Second bar 24 is coupled to bimetal leaf, and can move with the movement of bimetal leaf.
In the illustrated embodiment, the first bar is connected to bimetal leaf in the side of bimetal leaf, and the second bar is in the another of bimetal leaf
Side is connected to bimetal leaf.
In accordance with an embodiment of the present disclosure, axis 242 is disposed on the second bar 24.Thus it when the second bar is mobile, sets thereon
The axis 242 set moves together.Axis 242 highlightedly extends into sliding slot 34 from the second bar, in axis 242 in company with the drift of bimetal leaf
When mobile, axis 242 slides in sliding slot 34 simultaneously, thus pushes sliding slot inner wall.Drift value amplification bar 32 is pivotally arranged at
On electrothermal relay, under the action of the power of inner wall, drift value amplifies bar 32 and pivots, and thereby indicates that the drift value of bimetal leaf
Variation.
In accordance with an embodiment of the present disclosure, drift value amplification bar 32 further includes the indicateing arm for indicating the position of bimetal leaf 10
Note.In the illustrated embodiment, drift value amplification bar 32 is provided with sliding slot 34 far from one end of pivot, opposite with sliding slot 34
One end is provided with indicate indicator 34 ', and mark corresponding with the performance optimum performance of electrothermal relay is provided in indicate indicator 34 '
Note.
In accordance with an embodiment of the present disclosure, electrothermal relay is provided with for exposing cue mark in order to visually observing finger
The openning 52 of indicating note, openning 52 are provided with multiple temperature marks, and temperature mark is cold with electrothermal relay at different temperatures
Predeterminated position when state where bimetal leaf 10 is corresponding.It should be noted that term " cold conditions " refers to that electrothermal relay is in ring
State when not working at a temperature of border.In other words, bimetal leaf is now in the state that overheating deforming does not occur under environment temperature.
When electrothermal relay work, bimetal leaf can deform, therefore the state is known as the hot of electrothermal relay.
In fig. 6 it is shown that the schematic diagram of indicate indicator 34 ' and openning 52.In one embodiment, openning 52 is set
It sets in the side for the shell being easily observe that, such as can be arranged with operation button on one face, to facilitate observation.
As shown in fig. 6, being provided with label in indicate indicator 34 ', the position phase with the bimetal leaf of electrothermal relay is marked
Association, preferably shows position corresponding with the performance optimum performance of electrothermal relay wherein marking.The label is usually hot relay
(cold conditions) pre-production when device dispatches from the factory.When bimetal leaf deforms (such as the deformation of creep that occurs by aging or because of work
The deformation making the temperature change of environment and generating) when, indicate indicator 34 ' is slided in openning.In the illustrated embodiment, it opens
It is additionally provided with mark corresponding with temperature on mouth window, which shows the optimum position of the bimetal leaf at corresponding temperature.It is logical
Cross such arrangement, can easily identify the thermal drift that bimetal leaf occurs with temperature change, can according to heat after
The application environment of electric appliance selects suitable predeterminated position.
In accordance with an embodiment of the present disclosure, see that Fig. 1-Fig. 5, electrothermal relay further include regulating member 40, regulating member 40 is matched
Be set to keep the transmission parts of tripping mechanism 20 mobile according to the position of the bimetal leaf 10 shown in drift 30 meaning of indicator so that
The predeterminated position of the position of bimetal leaf 10 when restoring to electrothermal relay cold conditions.It, can be effectively by the way that regulating member is arranged
Deformation (or thermal drift) caused by the deformation of creep or variation of ambient temperature to sheet metal effectively compensates for.
Fig. 5 shows the detailed schematic of the regulating member 40 according to one embodiment of the disclosure.In the implementation of diagram
In example, regulating member 40 includes knob 42 and cam pack, and knob 42 and cam pack are configured in response to the rotation of knob
And the 4th bar 28 is pushed to pivot, and then restore bimetal leaf 10 to predetermined position via third bar 26 and the first bar 22.
On the one hand, when using relay under the conditions of different temperature, user can be adjusted according to the position of indicate indicator
Regulating member 40, to adjusting the bimetal leaf of electrothermal relay to optimum position.In addition, electrothermal relay bimetal leaf by
When creep occurs for aging etc., electrothermal relay can be reset to by optimum position by regulating member 40 again.
In the illustrated embodiment, since regulating member 40 has borrowed the motion work of the bimetal leaf of electrothermal relay
Section components, thus the textural anomaly of regulating member 40 is simple.In the illustrated embodiment, the first bar, the second bar, third
Bar, the 4th bar and moving contact trigger assembly come realize bimetal leaf heat power-off, by means of the first bar, the second bar, third bar
With the 4th bar, when bimetal leaf drifts about, by regulating member with occur the opposite side of drift push up the 4th bar,
Third bar, the second bar, the movement of the first bar, to restoring bimetal leaf to optimum position.
In the illustrated embodiment, as the regulating member of temperature compensation mechanism 40 using the shape of knob and cam pack
Formula, it should be appreciated that temperature compensation mechanism can use other regulative modes.Under teachings of the present application, this field it is general
Logical technical staff is readily apparent that other various realization structures.
Pass through the introduction gone out given in above description and relevant drawings, many modifications of the disclosure described herein
It will be recognized by disclosure those skilled in the relevant art with other embodiment.Therefore, it should be understood that, the disclosure
Embodiment is not limited to disclosed specific embodiment, and modification and other embodiment are intended to be included in this
Within scope of disclosure.In addition, although above description and relevant drawings are in certain example combination forms of component and/or function
Example embodiment is described under background, it will be appreciated that, component can be provided by alternate embodiment
And/or the different combinations of function are without departing from the scope of the present disclosure.On this point, for example, with explicitly described above
Other combining forms of different component and/or function be also expected within the scope of the present disclosure.Although here
Using concrete term, but they are only used with general and descriptive meaning and are not intended to and are limited.
Claims (9)
1. a kind of electrothermal relay, comprising:
Bimetal leaf；
The tripping mechanism coupled with the bimetal leaf；
Wherein the bimetal leaf is configured to deform when super-high-current flows through to trigger the tripping mechanism movement；Institute
It states tripping mechanism and is configured to deformation according to the bimetal leaf, disconnect the contact between moving contact and static contact；And
Drift about indicator, is configured to detect the drift value of the bimetal leaf, and indicate the position of the bimetal leaf；
Wherein the drift indicator includes the drift value amplification bar for being pivotally mounted to the electrothermal relay, and wherein institute
State drift value amplification bar be configured to when the bimetal leaf drifts about, in response to the bimetal leaf drift and pivot
Turn.
2. electrothermal relay according to claim 1, wherein the drift value amplification bar includes sliding slot, is fitted in the sliding slot
In receiving axis, the axis is from being configured in company with the drift of the bimetal leaf and prominent, the drift value on the component of movement
Amplification bar is mobile in response to the drift of the axis and pivots.
3. electrothermal relay according to claim 1, wherein the tripping mechanism includes:
The first bar for loading the bimetal leaf, in response to the bimetal leaf deformation and translate；
The second bar being substantially arranged side by side with first bar；
A part of the third bar being pivotably connected with second bar, the third bar is installed to first bar, so that
The translational motion of first bar is converted into the rotation of third bar in the bi-metal plate deformed；
4th bar, the arrangement for being pivotally mounted to electrothermal relay and being separated with the third bar, and be configured to respond to
In the third bar rotation and rotate；And
Moving contact trigger assembly is configured to the rotation of the 4th bar and triggers the moving contact movement.
4. electrothermal relay according to claim 3, wherein second bar is slidably disposed the electrothermal relay
In and be configured to drift about together with first bar when the bimetal leaf drifts about.
5. electrothermal relay according to claim 4, wherein be disposed with axis on second bar.
6. electrothermal relay according to any one of claims 1-5, wherein the drift value amplification bar includes described in instruction
The cue mark of the position of bimetal leaf.
7. electrothermal relay according to claim 6, further includes:
For observing the openning of the cue mark, the openning is provided with multiple temperature marks, the temperature mark with
Predeterminated position at different temperatures when the electrothermal relay cold conditions where bimetal leaf is corresponding.
8. electrothermal relay according to any one of claims 1-5, further includes:
Regulating member, the regulating member are configured to the position according to the bimetal leaf shown in the drift indicator meaning
It sets, keeps the transmission parts of the tripping mechanism mobile, so that the position of the bimetal leaf restores to the electrothermal relay to send out
Wave predeterminated position when normal effect.
9. electrothermal relay according to claim 8, wherein
The tripping mechanism includes:
The first bar for loading the bimetal leaf, in response to the bimetal leaf deformation and translate；
The second bar being substantially arranged side by side with first bar；
A part of the third bar being pivotably connected with second bar, the third bar is installed to first bar, so that
The translational motion of first bar is converted into the rotation of third bar in the bi-metal plate deformed；
4th bar, the arrangement for being pivotally mounted to electrothermal relay and being separated with the third bar, and be configured to respond to
In the third bar rotation and rotate；And
Moving contact trigger assembly is configured to the rotation of the 4th bar and triggers the moving contact movement；
The regulating member includes knob and cam pack；The knob and cam pack are configured to be adapted for knob
It rotates and the 4th bar is pushed to pivot, and then restore the bimetal leaf to described pre- via the third bar and the first bar
If position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659341.4A CN106601562B (en) | 2015-10-14 | 2015-10-14 | Electrothermal relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659341.4A CN106601562B (en) | 2015-10-14 | 2015-10-14 | Electrothermal relay |
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| Publication Number | Publication Date |
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| CN106601562A CN106601562A (en) | 2017-04-26 |
| CN106601562B true CN106601562B (en) | 2019-08-30 |
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| CN201510659341.4A Active CN106601562B (en) | 2015-10-14 | 2015-10-14 | Electrothermal relay |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546676A (en) * | 2008-03-24 | 2009-09-30 | 富士电机机器制御株式会社 | Thermal overload relay |
| CN201369298Y (en) * | 2009-03-17 | 2009-12-23 | 现代重工(中国)电气有限公司 | Thermal overload relay with dual metal sheets |
| CN103512523A (en) * | 2012-06-20 | 2014-01-15 | 苏州工业园区高登威科技有限公司 | Thermal relay bimetallic strip detection device |
| CN204632698U (en) * | 2015-05-20 | 2015-09-09 | 浙江天正电气股份有限公司 | A kind of thermal relay |
| CN205104456U (en) * | 2015-10-14 | 2016-03-23 | 施耐德电气工业公司 | A thermal relay |
-
2015
- 2015-10-14 CN CN201510659341.4A patent/CN106601562B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546676A (en) * | 2008-03-24 | 2009-09-30 | 富士电机机器制御株式会社 | Thermal overload relay |
| CN201369298Y (en) * | 2009-03-17 | 2009-12-23 | 现代重工(中国)电气有限公司 | Thermal overload relay with dual metal sheets |
| CN103512523A (en) * | 2012-06-20 | 2014-01-15 | 苏州工业园区高登威科技有限公司 | Thermal relay bimetallic strip detection device |
| CN204632698U (en) * | 2015-05-20 | 2015-09-09 | 浙江天正电气股份有限公司 | A kind of thermal relay |
| CN205104456U (en) * | 2015-10-14 | 2016-03-23 | 施耐德电气工业公司 | A thermal relay |
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| Publication number | Publication date |
|---|---|
| CN106601562A (en) | 2017-04-26 |
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