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CN101299402B - Pyromagnetic release - Google Patents

Pyromagnetic release Download PDF

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Publication number
CN101299402B
CN101299402B CN200810122551XA CN200810122551A CN101299402B CN 101299402 B CN101299402 B CN 101299402B CN 200810122551X A CN200810122551X A CN 200810122551XA CN 200810122551 A CN200810122551 A CN 200810122551A CN 101299402 B CN101299402 B CN 101299402B
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CN
China
Prior art keywords
push rod
pedestal
tripping
circuit breaker
release device
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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.)
Active
Application number
CN200810122551XA
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Chinese (zh)
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CN101299402A (en
Inventor
唐维春
吴海霞
陈志刚
王炯华
管瑞良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changshu Switchgear Manufacturing Co Ltd
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Changshu Switchgear Manufacturing Co Ltd
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Priority to CN200810122551XA priority Critical patent/CN101299402B/en
Publication of CN101299402A publication Critical patent/CN101299402A/en
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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

A kind of thermo magnetic trip release device
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, be main generally with thermal overload protection, short-circuit protection as the circuit breaker of traditional mechanical formula structure.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,, have back level function and protecting module mostly no matter be pyromagnetic adjustable or traditional pyromagnetic nonadjustable circuit breaker; 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, and its mechanism is: after functional module detected operating current, the functional module release hit and is installed in the push rod 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, the contact of circuit breaker is broken off by tripping.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 the two thermal conditioning draw bar and the magnetic dropout draw bars that are coupling; 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 detected operating current, the functional module release hit and is installed in the push rod 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 and still is magnetic dropout draw bar and all can produce the mistake indication, it is unreliable 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 accomplished like this; A kind of thermo magnetic trip release device; It comprises that the draw bar, that a pedestal, is located on the pedestal movably is located at tripping device and one group of pyromagnetic protective device that is installed on the pedestal on the pedestal, it is characterized in that also comprising that one is provided in the push rod on the pedestal slidably, and an end of push rod is corresponding with the circuit breaker operation mechanism locker; The release of level functional module is corresponding behind the other end of push rod and the circuit breaker; Hit push rod when the release of level functional module moves behind the circuit breaker, push rod is attacked the action of circuit breaker operation mechanism locker directly, makes breaker open operation.
In a concrete embodiment of the present invention, be fixed with a support on the described pedestal, described push rod and support connect.
In another concrete embodiment of the present invention, be fixed with on the described push rod one be used to make the back-moving spring that push rod resets an end, the other end and the support of back-moving spring are fixed.
Go back among the concrete embodiment of the present invention, offer guide runner on the described pedestal, described push rod is slidingly fitted on the guide runner.
In another concrete 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 prominently leading to be equipped with on the prominent seat, 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 concrete embodiment of the present invention, described baffle plate towards an end of push rod constitute breach retaining prominent with a guide groove corresponding to the prominent bottom of breach retaining; 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 among concrete embodiment, described gradient relation is meant that the position of first kink is higher than second kink.
In of the present invention and then concrete 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 said pedestal, and described magnetic dropout actuator lever matches with short trouble tripping on movably being located at said pedestal, and the structure of tripping of described thermal overload fault and short trouble tripping is identical.
Of the present invention again more and among concrete embodiment; Extend on the described pedestal be useful on supply 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 concrete embodiment; Offer a pair of groove on the described pedestal; The middle part of described thermal overload fault tripping is connected across on one of them groove in the described a pair of groove through first spring, and the middle part of described short trouble tripping is connected across on another groove in a pair of groove through 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, made 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 sketch map 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 sketch map of the loam cake of circuit breaker.
Fig. 7 is the sketch map 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 is able to install four pyromagnetic protective devices 4; 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 is located in four pyromagnetic protective device containing cavities 14, thereby constitutes 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 do not constitute the restriction to technical scheme 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 6 sliding the joining of push rod that also will detail below supplying, and the function of a pair of groove 12 is that thermal overload fault tripping 51 and the short trouble tripping 52 of the tripping device 5 that equally also will detail below supplying is to ride the form setting.
The shape of support 2 does not receive 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; Side constitutes along (state shown in Figure 1) extension a pair of first, second fixing feet 22,23 in the front side of baffle plate 21; With screw the upper surface at a distance from retaining 13 that is used for branch heat insulating protecting apparatus 4 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 through 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 edge of breach retaining prominent 211 is 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, and the fault type of being said here is meant: one is the thermal overload fault of circuit breaker, another is the short trouble of circuit breaker.
Draw bar 3 comprises fixed axis 31, thermal conditioning actuator lever 32 and magnetic dropout actuator lever 33; It is on the left and right wall shown in Figure 1 that 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 strings are located on the fixed axis 31, in order to ensure resetting of thermal conditioning actuator lever 32, then can take on through the torsion spring that is nested with on fixed axis 31; A pin of torsion spring is fixed on the pedestal 1, and another pin is fixed on the body of rod of an end of thermal conditioning actuator lever 32; Magnetic dropout actuator lever 33 same strings are enclosed within on the fixed axis 31, and also ensure that by corresponding torsion spring it resets.Actuating boss 321 on the thermal conditioning actuator lever 32 is corresponding with the tripping 51 of thermal overload fault, and the actuating flange 331 on the magnetic dropout actuator lever 33 is corresponding with short trouble tripping 52.
Ask for an interview Fig. 3 and combine 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, be 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 through first spring 512, and the middle part of short trouble tripping 52 is bearing in the corresponding groove 12 on the pedestal 1 through second spring 522.
Please see Fig. 1 by emphasis; As the achievement point of technical scheme of the present invention, the thermo magnetic trip release device that provides also includes and has 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 here is meant aspect ratio second kink 62 height of first kink 61.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 prominent 211 that explain the front, 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, guide groove 212 supplies 61 sliding joining of first kink with guide runner 11 common grooves that form on the pedestal 1.On second kink 62, offer and aforesaid prominent 2211 guide holes 621 that match 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 leans on back-moving spring 7 to ensure; Another execution mode also can be through 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 through interlock circuit breaker operation mechanism locker 8.Yet selected the former in the present embodiment, promptly used back-moving spring 7.To this, the spring pin that back-moving spring 7 has been shown in Fig. 1 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; What being used on the pedestal 1 separated pyromagnetic protective device 4 13 extends one section boss 131 at a distance from retaining, 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 through circuit breaker and to carry out spacingly, and after loam cake 9 closed with pedestal 1, retaining prominent 91 was combined into a slide guide slotted eye with guide runner 11 on the pedestal 1; 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 situation at circuit breaker, the top of push rod 6 is spacing also can carry out spacing, as shown in Figure 1 through the breach retaining prominent 211 of support 2.
Push rod 6 is installed on the pedestal 1; Have under the situation of support 2; 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 is not having under support 2 situation, and the thermo magnetic trip release device of present embodiment is applicable to pyromagnetic nonadjustable circuit breaker.
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, with being equipped with spacing that a boss 623 is used for that push rod 6 resets 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 combine 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, and after the back level functional module (trip signal such as leakage function module can be provided) that circuit breaker has detected operating current, the release of back level functional module (trip signal such as leakage function module can be provided) hit 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, and push rod 6 has just embodied direct strike circuit breaker operation mechanism locker 8 like this, makes 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 through after manually detaining operating mechanism again; Through 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 can indicates by first, second indicator hole 213,214 on support 2 with 52, two kinds of different faulty indication of short trouble tripping.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 be installed in the push rod in the breaker upper cover with aforesaid functional module release strike; It is no longer suitable to hit the structure of draw bar of thermo magnetic trip release device by push rod again, and 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; Like the described structure of the embodiment of front; 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, and push rod 6 is attacked circuit breaker operation mechanism locker 8 directly, makes 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. thermo magnetic trip release device; It comprises that the draw bar (3), that a pedestal (1), is located on the pedestal (1) movably is located at tripping device (5) and one group of pyromagnetic protective device (4) that is installed on the pedestal (1) on the pedestal (1); It is characterized in that also comprising that one is provided in the push rod (6) on the pedestal (1) slidably; One end of push rod (6) is corresponding with circuit breaker operation mechanism locker (8), and the release of level functional module is corresponding behind the other end of push rod (6) and the circuit breaker, hits push rod (6) behind the circuit breaker during release action of level functional module; Push rod (6) is attacked circuit breaker operation mechanism locker (8) action directly, makes breaker open operation.
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, it is characterized in that being fixed with on the described push rod (6) one be used to make the back-moving spring (7) that push rod (6) resets an end, 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) towards an end of push rod (6) constitute breach retaining prominent (211) with one corresponding to the dash forward guide groove (212) of bottom of (211) of breach retaining; 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 concerns that the position that is meant 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 said pedestal (1); And described magnetic dropout actuator lever (33) matches with short trouble tripping (52) on movably being located at said 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 supply 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 one of them groove (12) in the described a pair of groove (12) through first spring (512), and the middle part of described short trouble tripping (52) is connected across on another groove (12) in a pair of groove (12) through second spring (522).
CN200810122551XA 2008-05-31 2008-05-31 Pyromagnetic release Active CN101299402B (en)

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 CN101299402A (en) 2008-11-05
CN101299402B true CN101299402B (en) 2012-02-15

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
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
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
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
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
CN104008934B (en) * 2014-04-30 2016-06-29 浙江之路电气有限公司 Breaker of plastic casing
CN112885673B (en) * 2019-11-29 2024-09-13 上海电器股份有限公司人民电器厂 Thermomagnetic overload adjustable current protection module and 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

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