CN101299402A - Pyromagnetic release - Google Patents
Pyromagnetic release Download PDFInfo
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- CN101299402A CN101299402A CNA200810122551XA CN200810122551A CN101299402A CN 101299402 A CN101299402 A CN 101299402A CN A200810122551X A CNA200810122551X A CN A200810122551XA CN 200810122551 A CN200810122551 A CN 200810122551A CN 101299402 A CN101299402 A CN 101299402A
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- push rod
- pedestal
- tripping
- circuit breaker
- release device
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Abstract
A thermomagnetic releaser is arranged on the plastic case breaker, for directly striking the plastic case breaker operation mechanism locking device, which includes a base, a draw rod arranged on the base and a group of thermomagnetic protective device mounted on the base, characterized by also including a pushing rod slideably mounted on the base for causing the breaker operation locking device to act relative to the breaker operation locking device. The invention has the advantages of simple buckling process with no middle transistion tache, and no mistake indication is provided in the breaker thermomagnetic releaser with the thermomagnetic fault indication mechanism to ensure the action reliable.
Description
Technical field
The present invention relates to a kind of thermo magnetic trip release device, be configured on the breaker of plastic casing, be used for directly hitting the release of breaker of plastic casing operating mechanism locker.
Background technology
Breaker of plastic casing is applicable to that exchanging 50Hz, insulation voltage is that 800V, rated operational current are in 690A and the following distribution network, is used to distribute electric energy and protection circuit, power supply and power consumption equipment.Circuit breaker has overload, short circuit and under-voltage protection function, avoids circuit and power-supply device to be damaged.
The defencive function of breaker of plastic casing mainly contains thermal overload protection, short-circuit protection, delay protection, electronic type protection and earth leakage protective or the like.When implementing protection, as the circuit breaker of traditional mechanical formula structure generally based on thermal overload protection, short-circuit protection.The circuit breaker of Thermomagnetic type structure can be realized thermal overload protection and short-circuit protection.With regard to the circuit breaker of existing Thermomagnetic type structure; no matter be pyromagnetic adjustable or traditional pyromagnetic nonadjustable circuit breaker; have back level function and protecting module mostly; so-called back level function and protecting module is meant trip signal such as leakage function module can be provided; the push rod of this circuit breaker is installed in the breaker upper cover; its mechanism is: after functional module detects operating current; the functional module release hits the push rod that is installed in the breaker upper cover; hit the draw bar of thermo magnetic trip release device again by push rod; thereby make traction and tripping release; and then hit the tripper of circuit breaker by tripping, the contact of circuit breaker is disconnected.Obviously, the dropout process has adopted the middle transition structure, that is, push rod hits thermo magnetic trip release device draw bar, draw bar and tripping release then, and the operating mechanism locker by tripping strike circuit breaker makes breaker open operation at last.So this structure more complicated, the tripping process is loaded down with trivial details.And have in the thermo magnetic trip release device structure of pyromagnetic faulty indication (demonstration) at circuit breaker; the draw bar of circuit breaker is divided into two thermal conditioning draw bars that are coupling and magnetic dropout draw bar; be used for respectively thermal overload and short circuit overload are played a protective role; if re-use above-mentioned pusher structure; after the back level functional module (trip signal such as leakage function module can be provided) that circuit breaker has detects operating current; the functional module release hits the push rod that is installed in the breaker upper cover; hit the draw bar of thermo magnetic trip release device again by push rod; but hit the thermal conditioning draw bar still is that magnetic dropout draw bar all can produce the mistake indication; it is unreliable to move, thereby it is just no longer suitable to make the push rod of the thermo magnetic trip release device of said structure directly hit the situation of draw bar.
Summary of the invention
Task of the present invention is will provide a kind of tripping process simply and not to exist intermediate conversion links, draw bar can not produce mistake to indicate situation, reliable in action, no matter have pyromagnetic faulty indication or do not have the breaker of plastic casing thermo magnetic trip release device all applicatory of pyromagnetic faulty indication.
Task of the present invention is finished like this; a kind of thermo magnetic trip release device; it comprises that a pedestal, is located at draw bar and the one group of pyromagnetic protective device that is installed on the pedestal on the pedestal, it is characterized in that also including one be provided in slidably on the pedestal and with the corresponding push rod that is used to make the action of circuit breaker operation mechanism locker of circuit breaker operation mechanism locker.
In a specific embodiment of the present invention, be fixed with a support on the described pedestal, described push rod and support connect.
In another specific embodiment of the present invention, be fixed with an end that is used to make the back-moving spring that push rod resets on the described push rod, the other end and the support of back-moving spring are fixed.
Go back in the specific embodiment of the present invention, offer guide runner on the described pedestal, described push rod is slidingly fitted on the guide runner.
In another specific embodiment of the present invention, an end of described push rod constitutes first kink, and the other end constitutes second kink, and first, second kink constitutes the gradient relation; Described support comprises baffle plate and is used for and first, second fixing fixing feet of described pedestal, first, second fixing feet is arranged on a side bottom of baffle plate spaced apartly, and on first fixing feet, be formed with and lead prominent seat, lead be equipped with on the prominent seat lead prominent, and offer guide hole on second kink of described push rod, describedly lead prominent probing in the guide hole; Offer a pair of first, second indicator hole that is used to indicate the circuit breaker failure type on the described baffle plate, described fault type is the thermal overload fault of circuit breaker and the short trouble of circuit breaker.
In another specific embodiment of the present invention, described baffle plate constitute the prominent and guide groove corresponding to the prominent bottom of breach retaining of breach retaining towards an end of push rod; It is prominent that the end of described first kink has extended retaining, prominent the matching of the prominent and described breach retaining of this retaining.
More of the present invention and in specific embodiment, described gradient relation is meant that the position of first kink is than the second kink height.
In of the present invention and then specific embodiment, described draw bar comprises fixed axis, thermal conditioning actuator lever and magnetic dropout actuator lever, the two ends of fixed axis are fixed on the corresponding wall body of length direction of pedestal, thermal conditioning actuator lever and magnetic dropout actuator lever are distribution up and down and are arranged on rotationally on the same fixed axis, wherein: described thermal conditioning actuator lever matches with the thermal overload fault tripping of tripping device on movably being located at described pedestal, and described magnetic dropout actuator lever matches with short trouble tripping on movably being located at described pedestal, and the structure of tripping of described thermal overload fault and short trouble tripping is identical.
Of the present invention again more and in specific embodiment, extend on the described pedestal be useful on for the tripping of described thermal overload fault and short trouble tripping hub setting and be made into right boss, and the tripping of described thermal overload fault is provided with one first rotating shaft, be provided with one second rotating shaft in the described short trouble tripping equally, first, second rotating shaft hub setting movably is on described boss.
In again of the present invention and then specific embodiment, offer a pair of groove on the described pedestal, the middle part of described thermal overload fault tripping is connected across on the groove by first spring, and the middle part of described short trouble tripping is connected across on the corresponding groove by second spring.
The present invention is owing to be provided with push rod on pedestal, therefore breaker of plastic casing with back level functional module (trip signal such as leakage function module can be provided) detect operating current after, the functional module release is threaded off, hit push rod during dropout, directly hit the operating mechanism locker of circuit breaker again by push rod, realize breaker open operation, thereby saved the middle transition link, promptly save push rod and hit draw bar, make draw bar and tripping release then, hit a series of transitional movement that the circuit breaker operation mechanism tripper makes breaker open operation by tripping at last, therefore owing to there is not the middle transition link, so the tripping process is simple, and the situation of mistake indication in the thermo magnetic trip release device of circuit breaker has the structure of pyromagnetic faulty indication, can not occur, guarantee reliable in action.
Description of drawings
Fig. 1 is one embodiment of the invention structure chart.
Fig. 2 is the backsight structural representation of Fig. 1.
Fig. 3 is the schematic diagram that push rod of the present invention hits the circuit breaker operation mechanism locker.
Fig. 4 is a second embodiment of the present invention structure chart.
Fig. 5 is a third embodiment of the present invention structure chart.
Fig. 6 is the schematic diagram of the loam cake of circuit breaker.
Fig. 7 is the schematic diagram of the side of Fig. 6.
Embodiment
Embodiment one: push rod 6 is installed between support 2 and the pedestal 1.
Present embodiment thermo magnetic trip release device is applicable to pyromagnetic adjustable and pyromagnetic nonadjustable circuit breaker, also is suitable for the circuit breaker that has faulty indication.
Ask for an interview Fig. 1 and Fig. 2; provided the pedestal 1 that four pyromagnetic protective devices 4 are installed; specifically: in a side of the length direction of pedestal 1 is that the front side of present location status shown in Figure 1 has been separated out four pyromagnetic protective device containing cavities 14; four pyromagnetic protective devices 4 are located in four pyromagnetic protective device containing cavities 14; thereby constitute four-pole circuit breaker; based on being this reason; if use three pyromagnetic protective devices 4; show as three-pole breaker so, so present embodiment does not constitute the restriction to technical solution of the present invention.On the wall body of rear side that on the pedestal 1 is left end shown in Figure 1, offer a guide runner 11 and also be processed with a pair of groove 12 on guide runner 11 right-hand, the function of guide runner 11 is for 6 sliding joining of the following push rod that also will describe in detail, and the function of a pair of groove 12 is to ride the form setting for the thermal overload fault tripping 51 of the following tripping device 5 that equally also will describe in detail and short trouble tripping 52.
The shape of support 2 is not subjected to the restriction of shape shown in Figure 1, and it can have various variations, only is the preferable shape that the applicant selects among the figure.Support 2 has comprised baffle plate 21 and a pair of first, second fixing feet 22,23; a pair of first, second fixing feet 22,23 is extended formation in the front side of baffle plate 21 side along (state shown in Figure 1); with screw the upper surface of the barrier that is used for branch heat insulating protecting apparatus 4 13 on a pair of first, second fixing feet 22,23 and the pedestal 1 is fixed, and baffle plate 21 is fixing with the fixed ear base 15 on the pedestal 1 by the fixedly ear 215 that is extended on the baffle plate 21.Extended one in the bottom of first fixing feet 22 towards a side of push rod 6 and led prominent seat 221, be equipped with one on the prominent seat 221 and lead prominent 2211 leading.By shown in Figure 1, left end at baffle plate 21 promptly is processed into the guide groove 212 that breach retaining prominent 211 and is positioned at prominent 211 bottoms of breach retaining towards an end of push rod 6, the side of breach retaining prominent 211 is along corresponding with retaining prominent 611, and offer a pair of first, second indicator hole 213,214 that is used to indicate fault type in the nearly middle part and an inclined to one side side of baffle plate 21, here the fault type of being said is meant: one is the thermal overload fault of circuit breaker, and another is the short trouble of circuit breaker.
Ask for an interview Fig. 3 and in conjunction with Fig. 2, extend at the rear side of pedestal 1 and to be made into two groups of right boss 16, have shaft hole on the boss 16, in thermal overload fault tripping 51, be provided with first rotating shaft 511, and in short trouble tripping 52, being provided with second rotating shaft 521, first, second rotating shaft 511,521 hub settings pivotally are on described boss 16.The middle part of thermal overload fault tripping 51 is bearing in the groove 12 on the pedestal 1 by first spring 512, and the middle part of short trouble tripping 52 is bearing in the corresponding groove 12 on the pedestal 1 by second spring 522.
Please see Fig. 1 by emphasis, achievement point as technical scheme of the present invention, the thermo magnetic trip release device that provides, also include and have additional push rod 6 and back-moving spring 7, one end of push rod 6 constitutes first kink 61, the other end constitutes second kink 62, thereby makes push rod 6 trend towards gradient shape, and the gradient shape of being said is meant aspect ratio second kink 62 height of first kink 61 here.Be similar to zigzag on the whole or be referred to as glyph construction.It is prominent 611 to be equipped with a retaining at the upper surface of the end of first kink 61, and this retaining prominent 611 matches with the breach retaining of explaining previously prominent 211, that is to say by prominent 211 pairs of breach retaining to keep off dashing forward and 611 stop, skids off guide runner 11 to prevent whole piece of push rod 6.In addition first kink 61 also with support 2 on guide groove 212 slippery, more particularly, the guide runner 11 common grooves that form on guide groove 212 and the pedestal 1 are for 61 sliding joining of first kink.On second kink 62, offer and aforesaid 2211 guide holes that match 621 of dashing forward of leading.The end face 622 of second kink 62 is corresponding with the release of the back level functional module (trip signal such as leakage function module can be provided) of circuit breaker, so that hit end face 622 by release, push rod 6 is slided, and then promote (actuatings) or claim strike circuit breaker operation mechanism locker 8 by the end face of first kink 61 of push rod 6.Resetting behind the push rod 6 strike circuit breaker operation mechanism lockers 8 ensures by back-moving spring 7, another execution mode also can be by after manually detaining circuit breaker operation mechanism locker 8 again, promptly push rod 6 is resetted, that is to say and not use back-moving spring 7 by interlock circuit breaker operation mechanism locker 8.Yet selected the former in the present embodiment, promptly used back-moving spring 7.To this, a spring pin that figure 1 illustrates back-moving spring 7 is fixed in the spring pin fixing hole 24 on the support 2, and another spring pin of back-moving spring 7 is fixed in the fixing hole 612 that the front end of first kink 61 offers.
Embodiment two: push rod 6 is installed on the pedestal 1.
Ask for an interview Fig. 4 and Fig. 6; present embodiment all is suitable for having under support 2 and the situation that does not have support 2; the barrier 13 that being used on the pedestal 1 separated pyromagnetic protective device 4 extends one section boss 131, is equipped with one on the boss 131 and leads prominently 1311, and the guide hole 621 of push rod 6 1311 matches with leading to dash forward.
When no matter circuit breaker has support or does not have support 2, the top of push rod 6 is spacing to be provided with a retaining prominent 91 in all can the loam cake 9 by circuit breaker and to carry out spacing, after loam cake 9 closes with pedestal 1, guide runner 11 on retaining prominent 91 and the pedestal 1 is combined into a slide guide slotted eye, can carry out spacing to push rod 6 thus, when push rod 6 resets, move to the retaining prominent 611 of push rod 6 and contact with retaining prominent 91 in the loam cake 9 and promptly stop to move, push rod 6 can not come off from guide runner 11 like this.Have under support 2 situations at circuit breaker, the top of push rod 6 spacing also can the breach retaining prominent 211 by support 2 carry out spacing, as shown in Figure 1.
Embodiment three: push rod 6 is installed on the support 2.
Ask for an interview Fig. 5 and Fig. 7, the support 2 of present embodiment is offered a slide guide hole 216 at prominent 211 corresponding positions of breach retaining again on the structure of embodiment one support 2, like this push rod 6 is installed in the slide guide hole 216 of support 2, spacing that a boss 623 is used for that push rod 6 resets will be equipped with on the push rod 6, when push rod 6 resets, move to boss 623 and contact (Fig. 7 shows) with the sidewall 92 of loam cake 9, i.e. stop motion, push rod 6 can not come off from slide guide hole 216 like this.
The thermo magnetic trip release device of present embodiment is applicable to pyromagnetic adjustable and pyromagnetic nonadjustable circuit breaker, the circuit breaker of also applicable tape jam indication.
Please in conjunction with Fig. 1 to Fig. 5, thermo magnetic trip release device of the present invention is applicable to pyromagnetic adjustable and traditional pyromagnetic nonadjustable circuit breaker, when circuit breaker has back level functional module (trip signal such as leakage function module can be provided), push rod 6 is installed between pedestal 1 and support 2, after the back level functional module (trip signal such as leakage function module can be provided) that circuit breaker has detects operating current, the release of back level functional module (trip signal such as leakage function module can be provided) hits the end face 622 of second kink 62 of push rod 6, push rod 6 is free to slide forward in guide runner 11, the top end face that moves to its first kink 61 when push rod 6 contacts (Fig. 3 shows) with circuit breaker operation mechanism locker 8, push rod 6 has just embodied direct strike circuit breaker operation mechanism locker 8 like this, make breaker open operation, behind the breaker open operation, push rod 6 separates with circuit breaker operation mechanism locker 8 under the restoring force effect of back-moving spring 7.Another execution mode also can be by after manually detaining operating mechanism again, by interlock circuit breaker operation mechanism locker 8 push rod 6 is resetted, be that push rod 6 does to reply slip backward, when the retaining on sliding into first kink 61 prominent 611 contacts with breach retaining prominent 211, then stop to slide, can not deviate from guide runner 11 to guarantee push rod 6.Because above-mentioned tripping process does not need the middle transition link, so structure is terse, the tripping process is simple.
When the thermo magnetic trip release device of circuit breaker has pyromagnetic faulty indication, draw bar 3 is divided into thermal conditioning actuator lever 32 and magnetic dropout actuator lever 33, original tripping 5 is divided into thermal overload fault tripping 51 and 52, two kinds of different faulty indication of short trouble tripping can be indicated by first, second indicator hole 213,214 on support 2.When circuit breaker had short trouble, thermal conditioning actuator lever 32 was separated self-locking with the tripping of thermal overload fault, and thermal overload fault tripping 51 promotes corresponding faulty indication type.In the case, when circuit breaker have after a level functional module after (trip signal such as leakage function module can be provided) detect operating current, if hit the push rod that is installed in the breaker upper cover with aforesaid functional module release, it is no longer suitable to hit the structure of draw bar of thermo magnetic trip release device by push rod again, therefore no matter hitting thermal conditioning actuator lever 32 still hits magnetic dropout actuator lever 33, all can produce the mistake indication.The present invention is installing push rod 6 on the pedestal 1 or between pedestal 1 and the support 2, structure as previously described in the embodiment, after the back level functional module (trip signal such as leakage function module can be provided) that circuit breaker has detects operating current, the release of functional module hits push rod 6, push rod 6 is attacked circuit breaker operation mechanism locker 8 directly, make breaker open operation, this kind structure misoperation can not occur when the thermo magnetic trip release device has pyromagnetic faulty indication, the mistake indication can not occur so reliable in action is stable.
Claims (10)
1, a kind of thermo magnetic trip release device; it comprises that a pedestal (1), is located at draw bar (3) and the one group of pyromagnetic protective device (4) that is installed on the pedestal (1) on the pedestal (1), it is characterized in that also including one be provided in slidably on the pedestal (1) and with the corresponding push rod (6) that is used to make circuit breaker operation mechanism locker (8) action of circuit breaker operation mechanism locker (8).
2, thermo magnetic trip release device according to claim 1 is characterized in that being fixed with on the described pedestal (1) support (2), and described push rod (6) connects with support (2).
3, thermo magnetic trip release device according to claim 2 is characterized in that being fixed with on the described push rod (6) end that is used to make the back-moving spring (7) that push rod (6) resets, and the other end of back-moving spring (7) and support (2) are fixing.
4, thermo magnetic trip release device according to claim 1 and 2 is characterized in that offering guide runner (11) on the described pedestal (1), and described push rod (6) is slidingly fitted on the guide runner (11).
5, thermo magnetic trip release device according to claim 2 is characterized in that an end of described push rod (6) constitutes first kink (61), and the other end constitutes second kink (62), and first, second kink (61,62) constitutes the gradient relation; Described support (2) comprises baffle plate (21) and is used for and fixing first, second fixing feet (22,23) of described pedestal (1), first, second fixing feet (22,23) is arranged on a side bottom of baffle plate (21) spaced apartly, and on first fixing feet (22), be formed with and lead prominent seat (221), lead prominent (2211) leading to be equipped with on the prominent seat (221), and offer guide hole (621) on second kink (62) of described push rod (6), describedly lead prominent (2211) and probe in the guide hole (621); Offer a pair of first, second indicator hole (213,214) that is used to indicate the circuit breaker failure type on the described baffle plate (21), described fault type is the thermal overload fault of circuit breaker and the short trouble of circuit breaker.
6, thermo magnetic trip release device according to claim 5, it is characterized in that described baffle plate (21) constitute breach retaining prominent (211) and corresponding to the dash forward guide groove (212) of bottom of (211) of breach retaining towards an end of push rod (6); The end of described first kink (61) has extended retaining prominent (611), and this retaining prominent (611) matches with described breach retaining prominent (211).
7, thermo magnetic trip release device according to claim 5 is characterized in that described gradient relation is meant that the position of first kink (61) is than second kink (62) height.
8, thermo magnetic trip release device according to claim 1, it is characterized in that described draw bar (3) comprises fixed axis (31), thermal conditioning actuator lever (32) and magnetic dropout actuator lever (33), the two ends of fixed axis (31) are fixed on the corresponding wall body of length direction of pedestal (1), thermal conditioning actuator lever (32) and magnetic dropout actuator lever (33) are distribution up and down and are arranged on rotationally on the same fixed axis (31), wherein: described thermal conditioning actuator lever (32) matches with the thermal overload fault tripping (51) of tripping device (5) on movably being located at described pedestal (1), and described magnetic dropout actuator lever (33) matches with short trouble tripping (52) on movably being located at described pedestal (1), and described thermal overload fault tripping (51) is identical with the structure of short trouble tripping (52).
9, thermo magnetic trip release device according to claim 8, it is characterized in that extending on the described pedestal (1) be useful on for described thermal overload fault tripping (51) and short trouble tripping (52) hub setting and be made into right boss (16), and described thermal overload fault tripping (51) is provided with one first rotating shaft (511), be provided with one second rotating shaft (521) in the described short trouble tripping (52) equally, first, second rotating shaft (511,521) hub setting movably is on described boss (16).
10, thermo magnetic trip release device according to claim 9, it is characterized in that offering on the described pedestal (1) a pair of groove (12), the middle part of described thermal overload fault tripping (51) is connected across on the groove (12) by first spring (512), and the middle part of described short trouble tripping (52) is connected across on the corresponding groove (12) by second spring (522).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810122551XA CN101299402B (en) | 2008-05-31 | 2008-05-31 | Pyromagnetic release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810122551XA CN101299402B (en) | 2008-05-31 | 2008-05-31 | Pyromagnetic release |
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| Publication Number | Publication Date |
|---|---|
| CN101299402A true CN101299402A (en) | 2008-11-05 |
| CN101299402B CN101299402B (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810122551XA Active CN101299402B (en) | 2008-05-31 | 2008-05-31 | Pyromagnetic release |
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| CN (1) | CN101299402B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986412A (en) * | 2010-11-19 | 2011-03-16 | 常熟开关制造有限公司(原常熟开关厂） | Overload tripping device of breaker |
| CN102005344A (en) * | 2010-11-19 | 2011-04-06 | 常熟开关制造有限公司(原常熟开关厂） | Tripping gear of frame-type breaker |
| CN102568961A (en) * | 2011-12-15 | 2012-07-11 | 常熟开关制造有限公司(原常熟开关厂） | Tripping traction device for circuit breaker |
| CN102568954A (en) * | 2010-12-22 | 2012-07-11 | 施耐德电器工业公司 | Residual current protection tripping mechanism and tripper |
| CN103021746A (en) * | 2012-11-30 | 2013-04-03 | 浙江中凯科技股份有限公司 | Operating mechanism controlling and protecting switching device |
| CN104008934A (en) * | 2014-04-30 | 2014-08-27 | 浙江之路电气有限公司 | Molded case circuit breaker |
| CN111048361A (en) * | 2019-12-28 | 2020-04-21 | 常熟市通润开关厂有限公司 | Thermal release adjusting method of molded case circuit breaker |
-
2008
- 2008-05-31 CN CN200810122551XA patent/CN101299402B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986412B (en) * | 2010-11-19 | 2012-11-07 | 常熟开关制造有限公司(原常熟开关厂） | Overload tripping device of breaker |
| CN102005344A (en) * | 2010-11-19 | 2011-04-06 | 常熟开关制造有限公司(原常熟开关厂） | Tripping gear of frame-type breaker |
| CN101986412A (en) * | 2010-11-19 | 2011-03-16 | 常熟开关制造有限公司(原常熟开关厂） | Overload tripping device of breaker |
| CN102005344B (en) * | 2010-11-19 | 2012-12-05 | 常熟开关制造有限公司(原常熟开关厂） | Tripping gear of frame-type breaker |
| CN102568954B (en) * | 2010-12-22 | 2014-10-15 | 施耐德电器工业公司 | Residual current protection tripping mechanism and tripper |
| CN102568954A (en) * | 2010-12-22 | 2012-07-11 | 施耐德电器工业公司 | Residual current protection tripping mechanism and tripper |
| CN102568961B (en) * | 2011-12-15 | 2014-02-26 | 常熟开关制造有限公司(原常熟开关厂） | Tripping traction device for circuit breaker |
| CN102568961A (en) * | 2011-12-15 | 2012-07-11 | 常熟开关制造有限公司(原常熟开关厂） | Tripping traction device for circuit breaker |
| CN103021746A (en) * | 2012-11-30 | 2013-04-03 | 浙江中凯科技股份有限公司 | Operating mechanism controlling and protecting switching device |
| CN103021746B (en) * | 2012-11-30 | 2014-11-05 | 浙江中凯科技股份有限公司 | Operating mechanism controlling and protecting switching device |
| CN104008934A (en) * | 2014-04-30 | 2014-08-27 | 浙江之路电气有限公司 | Molded case circuit breaker |
| CN104008934B (en) * | 2014-04-30 | 2016-06-29 | 浙江之路电气有限公司 | Breaker of plastic casing |
| CN111048361A (en) * | 2019-12-28 | 2020-04-21 | 常熟市通润开关厂有限公司 | Thermal release adjusting method of molded case circuit breaker |
| CN111048361B (en) * | 2019-12-28 | 2021-09-24 | 常熟市通润开关厂有限公司 | Thermal release adjusting method of molded case circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101299402B (en) | 2012-02-15 |
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