JPS6258096B2 - - Google Patents

Info

Publication number
JPS6258096B2
JPS6258096B2 JP55027196A JP2719680A JPS6258096B2 JP S6258096 B2 JPS6258096 B2 JP S6258096B2 JP 55027196 A JP55027196 A JP 55027196A JP 2719680 A JP2719680 A JP 2719680A JP S6258096 B2 JPS6258096 B2 JP S6258096B2
Authority
JP
Japan
Prior art keywords
plate
arc
movable contact
piece
movable
Prior art date
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.)
Expired
Application number
JP55027196A
Other languages
Japanese (ja)
Other versions
JPS56121247A (en
Inventor
Kunio Takemura
Hideya Kondo
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2719680A priority Critical patent/JPS56121247A/en
Publication of JPS56121247A publication Critical patent/JPS56121247A/en
Publication of JPS6258096B2 publication Critical patent/JPS6258096B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Breakers (AREA)

Description

【発明の詳細な説明】 この発明は回路しや断器に関するものである。[Detailed description of the invention] This invention relates to circuit breakers.

従来、短絡電流検出素子のヨークよりアーク走
行板を一体に延出して構造を簡単にしたものがあ
つた(特開昭54−57171号)。
Conventionally, there was a device which simplified the structure by integrally extending the arc running plate from the yoke of the short-circuit current detection element (Japanese Patent Application Laid-open No. 57171/1983).

しかし、可動接触子とアーク走行板とを同電位
に保つ必要のために構造が複雑化するとともに、
可動接触子の回動中心に対して同じ側に可動接
点、短絡電流検出素子およびばねがあるため、可
動接点に発生したアークの熱が短絡電流検出素子
およびばねに影響を及ぼすおそれがあるという欠
点があつた。
However, the structure becomes complicated due to the need to maintain the movable contact and the arc traveling plate at the same potential, and
Since the movable contact, short-circuit current detection element, and spring are located on the same side with respect to the center of rotation of the movable contact, the heat of the arc generated at the movable contact may affect the short-circuit current detection element and spring. It was hot.

したがつて、この発明の目的は、簡単な構成に
よりアーク走行板と可動接触子とを電気的に接続
できるとともに、アークの熱の短絡検出素子およ
びばねへの影響を低減することができる回路しや
断器を提供することである。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a circuit that can electrically connect an arc traveling plate and a movable contact with a simple configuration and can reduce the influence of arc heat on a short-circuit detection element and a spring. and provide disconnectors.

この発明の第1の実施例を第1図ないし第11
図に示す。すなわち、この回路しや断器の構成お
よび動作を項別にして説明するとつぎのとおりで
ある。
A first embodiment of this invention is shown in FIGS. 1 to 11.
As shown in the figure. That is, the configuration and operation of this circuit breaker will be explained item by item as follows.

() 構成 この回路しや断器は共通メカをもつた2極型
であつて、組立上、ベースおよびカバーのほ
か、3つのブロツクに区分できる。
() Structure This circuit breaker is a two-pole type with a common mechanism, and can be divided into three blocks in addition to the base and cover for assembly purposes.

(イ) ベースおよびカバー(第1図ないし第3
図、第9図) ベース1は成形材料で角形に成形され、表面側
には中央部にフレーム設置溝1a(第3図)およ
びフレーム設置溝1aを間にして両側部に長手方
向の両端部まで延びた長溝1b(第2図)が形成
され、裏面側には裏板貼着用凹部1c(第2図、
第3図)が形成されている。フレーム設置溝1a
には第3図のように底部に凹部1cに貫通する取
付孔1dを形成し、設置溝1aの電源側側壁1e
は上方に突出して溝内壁面中央に換気兼リンク逃
げ用縦スリツト1fを形成し、側壁1eの外面に
カバーガイドスリツト1gをテーパ形成し、また
第1図のように側壁1eと同じ高さで側壁1eの
両端部より側部と平行に可動軸ガイド壁1hを延
出形成し、側壁1eの両端面にカバー位置決め突
部1iを形成している。さらに第1図および第3
図のようにベース1の両端部中央で内側にカバー
取付孔1jを形成し、外側にガイド突部1kを形
成してしや断器取付孔1lを形成し、フレーム設
置溝1aと負荷側のカバー取付孔1jとの間で所
定位置に一対の第1ブロツク取付スリツト1m
(一方のみを図示)を形成している(凹部1cに
貫通)。
(a) Base and cover (Figures 1 to 3)
(Fig. 9) The base 1 is formed into a rectangular shape using a molding material, and has a frame installation groove 1a (Fig. 3) in the center on the front side and both ends in the longitudinal direction on both sides with the frame installation groove 1a in between. A long groove 1b (Fig. 2) extending to
Figure 3) is formed. Frame installation groove 1a
As shown in FIG. 3, a mounting hole 1d penetrating the recess 1c is formed at the bottom, and the power supply side side wall 1e of the installation groove 1a is
A vertical slit 1f for ventilation and link escape is formed in the center of the inner wall surface of the groove by protruding upward, and a cover guide slit 1g is formed in a tapered manner on the outer surface of the side wall 1e, and the same height as the side wall 1e is formed as shown in FIG. A movable shaft guide wall 1h is formed to extend from both ends of the side wall 1e in parallel with the sides, and cover positioning protrusions 1i are formed on both end faces of the side wall 1e. Furthermore, Figures 1 and 3
As shown in the figure, a cover mounting hole 1j is formed on the inside at the center of both ends of the base 1, a guide protrusion 1k is formed on the outside, a shingle disconnector mounting hole 1l is formed, and the frame installation groove 1a and the load side A pair of first block mounting slits 1 m are located at predetermined positions between the cover mounting hole 1j and the cover mounting hole 1j.
(only one of which is shown) is formed (through the recess 1c).

長溝1bは第1図および第2図のように(他方
の長溝は同一であるので省略)両端面の開口部1
nを電線接続口として、その内側に一対のリブ1
o,1pを形成して負荷側端子容部1qと電源側
端子容部1rとを形成し、また長溝1bの中央部
に仕切リブ1sを形成して仕切リブ1sの容部1
q側を第1ブロツク用容部1tとし、その底部に
バイメタル調整用孔1uを形成し、また容部1r
側を第3ブロツク用容部1vとし、容部1vには
ベース1の裏面の凹部1cに貫通する取付スリツ
ト1wを形成している。また第1図のようにベー
ス1の両側部表面で長溝1bに沿つてカバー位置
決め突条1xを形成している。
The long groove 1b has openings 1 on both end faces as shown in Figures 1 and 2 (the other long groove is omitted as it is the same).
n is the wire connection port, and a pair of ribs 1 are installed inside it.
o, 1p to form a load-side terminal receptacle 1q and a power-side terminal receptacle 1r, and a partition rib 1s is formed in the center of the long groove 1b to form a receptacle 1 of the partition rib 1s.
The q side is a first block container 1t, a bimetal adjustment hole 1u is formed at its bottom, and a container 1r is formed on the q side.
The side thereof is a third block receptacle 1v, and a mounting slit 1w penetrating into the recess 1c on the back surface of the base 1 is formed in the receptacle 1v. Further, as shown in FIG. 1, cover positioning protrusions 1x are formed on the surfaces of both sides of the base 1 along the long grooves 1b.

カバー2は、第1図ないし第4図のように成形
材料により縦横寸法をベース1と同一に形成して
ベース1の表面に被さるようにし、中央部2aが
所定高さをもちその中央に換気兼ハンドル用孔2
bを形成し、両端部中央には第1図および第3図
のようにカバー取付孔2cとベース1のガイド突
部1kに嵌合する切欠部2dとを形成し、さらに
両端部の両側部に第1図および第2図のようにド
ライバ差込孔2eを形成し、その孔2eの内面に
換気スリツト2e′を形成し、孔2eの下面縁部を
端子押え2e″としている。一方カバー2の内側
は、第3図のようにハンドル用孔2bに孔縁裏面
よりカバー2の側面と平行な垂下壁2fおよびベ
ース1の側壁1eに対向して側壁1eの上面のカ
バー位置決め突部1iに嵌合する側壁2gを形成
し、その側壁2gにベース1の換気兼リンク逃げ
用スリツト1fに連続するスリツト2hを形成
し、またカバーガイドスリツト1gに対応して側
壁2gの下面よりカバー2の下面に連続するカバ
ーガイドリブ2iを形成している。また第2図の
ように中央部2aの裏面でベース1の第3ブロツ
ク用容部1vに対向する位置に排気通路形成高さ
をもつ消弧グリツド押えリブ2jを形成し、中央
部2aの電源側側壁2kにアークガス排気通路形
成スリツト2lを形成し、これに連通する電源側
ドライバ差込孔2eの側部を切欠く切欠部2mお
よび差込孔2eの内周面で切欠部2mに連通して
孔入口に臨むスリツト2nを形成している。
As shown in Figures 1 to 4, the cover 2 is made of molding material and is formed to have the same vertical and horizontal dimensions as the base 1 so as to cover the surface of the base 1.The cover 2 has a central part 2a of a predetermined height and is provided with ventilation in the center. Hole for double handle 2
A cover mounting hole 2c and a notch 2d that fits into the guide protrusion 1k of the base 1 are formed at the center of both ends as shown in FIGS. As shown in FIGS. 1 and 2, a driver insertion hole 2e is formed in the hole 2e, a ventilation slit 2e' is formed on the inner surface of the hole 2e, and the lower edge of the hole 2e is used as a terminal holder 2e''.On the other hand, the cover 2, as shown in FIG. A slit 2h is formed in the side wall 2g that is continuous with the ventilation and link escape slit 1f of the base 1, and a slit 2h is formed in the side wall 2g to be connected to the ventilation/link escape slit 1f. A continuous cover guide rib 2i is formed on the lower surface of the base 1.As shown in FIG. An arc grid holding rib 2j is formed, an arc gas exhaust passage forming slit 2l is formed in the power supply side wall 2k of the central portion 2a, and a notch 2m and a gap are formed in the side of the power supply side driver insertion hole 2e communicating with the arc gas exhaust passage forming slit 2l. A slit 2n is formed on the inner circumferential surface of the insertion hole 2e, communicating with the notch 2m and facing the hole entrance.

ベース1とカバー2との結合は第3図のように
ベース1の表面にカバー2を載せ、ガイド突部1
kと切欠部2dおよびガイドリブ2iとガイドス
リツト1gを嵌合し、カバー位置決め突条1xに
カバー2の側壁下面を嵌着して、めピン3の先
端部をベース1の取付孔1jよりカバー2の取付
孔2cに通し、上部先端部を治具でカバー2にか
しめる。またベース1の裏面凹部1cはベース1
上にブロツク設置後裏板4を接着する。
To connect the base 1 and the cover 2, place the cover 2 on the surface of the base 1 as shown in Figure 3, and
k and the notch 2d, and the guide rib 2i and the guide slit 1g, fit the lower surface of the side wall of the cover 2 into the cover positioning protrusion 1x, and insert the tip of the pin 3 into the mounting hole 1j of the base 1 of the cover 2. Pass it through the mounting hole 2c, and caulk the top end to the cover 2 with a jig. Furthermore, the concave portion 1c on the back surface of the base 1 is
After installing the block on top, the back plate 4 is glued.

(ロ) 第1のブロツク(第1図、第2図、第9
図、第10図) 第1のブロツクAは主に引外し素子と可動接触
子を一体化したものである。すなわち、第10図
のようにヨーク5は板状体を逆U字形に折曲して
形成し、その上片5aにプランジヤ筒体用取付孔
5bを穿孔し、その一側片5cの外面に位置決め
突起5dを突出するとともに一対のアーク走行板
用抱持片5eをその両側部より延出し、また他側
片5fの先端に固定板用凹部5gを切欠形成して
かしめ用脚5hを形成している。引外し素子の1
つを構成するプランジヤ筒体6は下部が開口して
上部に小径の取付筒部6aを形成し、下部開口よ
りプランジヤ(可動鉄心)7を摺動自在に挿入し
て筒部6aより引外し板作動つば7aを有する細
軸先端部7bを突出して胴体部7cを筒体6の上
部内面に係止し(第2図参照)、さらに筒体6の
下部開口に臨む強制開極用の出力部となる、細軸
後端部7dに復帰コイルばね8を通してその先端
部を胴体部7cの後端に押付け、細軸後端部7d
を挿通する挿通孔9aを形成した固定鉄心9を筒
体6の下部開口に固着する。固定鉄心9の下面に
は小径のかしめ用筒部9bを形成している。さら
に筒体6の外面にコイル10を巻き、コイル10
の下側端部に負荷側端子板10aを溶接してい
る。
(b) The first block (Fig. 1, Fig. 2, Fig. 9)
(Fig. 10) The first block A mainly integrates a tripping element and a movable contact. That is, as shown in FIG. 10, the yoke 5 is formed by bending a plate-like body into an inverted U shape, and has a plunger cylinder mounting hole 5b formed in its upper piece 5a, and a plunger cylinder mounting hole 5b formed on the outer surface of its one side piece 5c. The positioning protrusion 5d is protruded, a pair of arc traveling plate holding pieces 5e are extended from both sides thereof, and a fixing plate recess 5g is cut out at the tip of the other side piece 5f to form a caulking leg 5h. ing. Tripping element 1
The plunger cylindrical body 6 that constitutes the two has an open bottom and a small-diameter mounting cylinder 6a at the top, and a plunger (movable iron core) 7 is slidably inserted into the bottom opening and the trip plate is removed from the cylinder 6a. A thin shaft tip 7b having an operating collar 7a is protruded to lock the body 7c to the upper inner surface of the cylinder 6 (see FIG. 2), and an output part for forced electrode opening faces the lower opening of the cylinder 6. The return coil spring 8 is passed through the thin shaft rear end 7d, and its tip is pressed against the rear end of the body 7c.
A fixed iron core 9 having an insertion hole 9a formed therein is fixed to the lower opening of the cylindrical body 6. A small-diameter caulking cylinder portion 9b is formed on the lower surface of the fixed iron core 9. Further, a coil 10 is wound around the outer surface of the cylindrical body 6.
A load-side terminal plate 10a is welded to the lower end of the load-side terminal plate 10a.

固定板11は板状体の一端部を下向きに折返え
してバイメタル固定用垂直片11aと水平折返し
片11bとを形成し(第2図参照)、中央片11
cに固定鉄心取付孔11dを穿孔し、他端に切欠
11eを形成してヨーク固定用かしめ脚11fを
形成し、中央片11cで垂直片11aの隣接側端
部の両側部に切欠部11gを形成し、垂直片の折
曲部に曲げやすくするための孔部11a′を形成
し、水平折返し片11bにねじ孔11hを形成
し、さらに中央片11cの一側部に取付片11i
を垂下させてその先端にフオーク状かしめ脚11
jを形成している。
The fixing plate 11 is formed by folding one end of a plate-like body downward to form a bimetal fixing vertical piece 11a and a horizontal folding piece 11b (see FIG. 2), and a central piece 11.
A fixed core mounting hole 11d is drilled in c, a notch 11e is formed at the other end to form a yoke fixing caulking leg 11f, and notches 11g are formed on both sides of the adjacent end of the vertical piece 11a at the central piece 11c. A hole 11a' is formed in the bent part of the vertical piece for easy bending, a screw hole 11h is formed in the horizontal folded piece 11b, and a mounting piece 11i is formed in one side of the central piece 11c.
A fork-shaped caulking leg 11 is attached to the tip of the leg.
forming a j.

ヨーク5と固定板11とは、ヨーク5の下部開
口位置に固定板11の中央片11cを臨ませ、ヨ
ーク5の上片5aの取付孔5bに筒体6の取付筒
部6aを下側から嵌め、固定鉄心9のかしめ用筒
部9bを固定板11の取付孔11dに上側から嵌
めて、コイル10の巻かれた筒体6をヨーク5と
固定板11とで挾着し、ヨーク5の一側片5cの
先端部にかしめ脚11fを挾着状態にかしめ、ヨ
ーク5のかしめ用脚5hを固定板11の切欠部1
1gに挾着状態にかしめて相互に固着するととも
に固定鉄心9の筒部9bを取付孔11dの孔縁に
かしめ固着している。
The yoke 5 and the fixing plate 11 are arranged so that the center piece 11c of the fixing plate 11 faces the lower opening position of the yoke 5, and the mounting cylinder part 6a of the cylinder 6 is inserted into the mounting hole 5b of the upper piece 5a of the yoke 5 from below. Fit the caulking cylinder part 9b of the fixed core 9 into the mounting hole 11d of the fixed plate 11 from above, and clamp the cylinder 6 around which the coil 10 is wound between the yoke 5 and the fixed plate 11. The caulking leg 11f is attached to the tip of the one side piece 5c, and the caulking leg 5h of the yoke 5 is attached to the notch 1 of the fixing plate 11.
1g in a clamped state and fixed to each other, and the cylindrical portion 9b of the fixed iron core 9 is fixed to the edge of the mounting hole 11d by caulking.

アーク走行板12は板状体をZ字折曲して縦形
に配置し、上部数直片12aの上端両側部に消弧
グリツド支持段12bを形成し、上部垂直片12
aと水平片12cとの折曲部は斜め下方に屈曲状
態で突出させてアーク移行部12dとなし、下部
垂直片12eには位置決め孔12fと両側部より
可動接触子支持片12gを下方に張出し、支持片
12gの端部に互いに対向する可動接触子用支軸
12hを外面よりプレスして突出している。この
アーク走行板12はヨーク5の一側片5cの位置
決め突起5dに位置決め孔12fを嵌合させて、
下部垂直片12eをヨーク5の一側片5cに当接
し、その抱持片5eを折り曲げて下部垂直片12
eを抱持状態にかしめる。この状態で支軸12h
は第2図のように固定板11の下部に位置する。
The arc traveling plate 12 is a plate-shaped body bent in a Z shape and arranged vertically, and arc extinguishing grid support steps 12b are formed on both sides of the upper end of the upper vertical piece 12a.
The bent part between a and the horizontal piece 12c is bent obliquely downward and forms an arc transition part 12d, and the lower vertical piece 12e has a positioning hole 12f and a movable contact support piece 12g extending downward from both sides. , mutually opposing movable contact support shafts 12h are pressed from the outer surface of the ends of the support pieces 12g to protrude. This arc travel plate 12 has a positioning hole 12f fitted into a positioning projection 5d of one side piece 5c of the yoke 5,
The lower vertical piece 12e is brought into contact with one side piece 5c of the yoke 5, and the holding piece 5e is bent to remove the lower vertical piece 12.
Crimp e into a hugging state. In this state, the spindle is 12h
is located at the bottom of the fixed plate 11 as shown in FIG.

バイメタル13は所定高さをもちフレーム20
に対する絶縁確保のため中間部13aが幅方向に
曲がつておりその下端部13bを固定板11の垂
直片11aに溶接し、また水平折返し片11bの
ねじ孔11hに調整ねじ14(第2図)をねじ込
み、調整ねじ14の先端面を中央片11cの裏面
に押圧する反作用で水平折返し片11bを押下げ
て垂直片11aを孔部11a′を有する折曲部で傾
けてバイメタル13の先端部13cの動作初期位
置の位置決めをする。
The bimetal 13 has a predetermined height and the frame 20
The middle part 13a is bent in the width direction in order to ensure insulation, and its lower end 13b is welded to the vertical piece 11a of the fixed plate 11, and an adjustment screw 14 (see Fig. 2) is inserted into the screw hole 11h of the horizontal folded piece 11b. is screwed in, and the horizontal folded piece 11b is pushed down by the reaction of pressing the tip end surface of the adjustment screw 14 against the back surface of the center piece 11c, and the vertical piece 11a is tilted at the bent part having the hole 11a', thereby tilting the tip end 13c of the bimetal 13. determine the initial position of the operation.

可動接触子15は板状体を中間部やや後端部よ
りの位置でわずかに折曲して先端部側が反り返る
ように形成し、その中間部の両側を下面よりプレ
スして半円弧状の軸受15aを形成し、後端部の
上面に下面よりプレスして復帰ばね支持突起15
bを突設し、先端部下面に上面よりプレスしてア
ーク移行突部15cを突設し、アーク移行突部1
5cに隣接して可動接点16を固着している。ま
た先端部からやや中間部寄りに下面よりプレスし
て後端部寄りが高くなるテーパの付いた可動枠当
接突起15dを隆設している。この可動接触子1
5はアーク走行板12の支軸12hに軸受15a
を臨ませ、支持片12gを拡開するようにたわま
せて嵌合する。また可動接触子15の後端部の支
持突起15bと固定板11の中央片11cの下面
との間に復帰ばね17を圧縮して介在する。この
復帰ばね17は逆円錐形コイルばねでその下端栓
小径部17aが支持突起15bに嵌合し、上端大
径部17bは固定鉄心9の筒部9bの挿通孔9a
に中心を位置させて、プランジヤ7の細軸後端部
7dがばね17の中心を通つて支持突起15bを
押すことができるようにしている。また復帰ばね
17の作用により可動接触子15の先端部上面は
アーク走行板12のアーク移行部12dの突出面
に当接して支持される(ベース設置後は可動枠に
支持される)。
The movable contactor 15 is formed by slightly bending a plate-shaped body at a position slightly closer to the rear end of the middle part so that the tip side is curved, and pressing both sides of the middle part from the lower surface to form a semicircular arc-shaped bearing. A return spring support projection 15 is formed by pressing from the bottom surface onto the upper surface of the rear end portion.
b is protruded, and the arc transition protrusion 15c is protruded from the lower surface of the tip by pressing from the upper surface, and the arc transition protrusion 1
A movable contact 16 is fixed adjacent to 5c. Further, a tapered movable frame abutting protrusion 15d is formed by pressing from the lower surface slightly toward the middle portion from the tip end and is raised toward the rear end portion. This movable contact 1
5 is a bearing 15a on the support shaft 12h of the arc traveling plate 12.
The supporting pieces 12g are bent to expand and fit together. Further, a return spring 17 is compressed and interposed between the support protrusion 15b at the rear end of the movable contactor 15 and the lower surface of the center piece 11c of the fixed plate 11. The return spring 17 is an inverted conical coil spring, and its lower end plug small diameter portion 17a fits into the support protrusion 15b, and its upper end large diameter portion 17b is an insertion hole 9a of the cylindrical portion 9b of the fixed iron core 9.
The center is located at , so that the thin shaft rear end 7d of the plunger 7 can push the support protrusion 15b through the center of the spring 17. Further, due to the action of the return spring 17, the top surface of the tip end of the movable contact 15 is supported by coming into contact with the protruding surface of the arc transition portion 12d of the arc traveling plate 12 (after the base is installed, it is supported by the movable frame).

つぎに、電路を形成するため第2図のように絶
縁チユーブ18aの付いた銅より線18bをバイ
メタル13の上端部とコイル10の上部端との間
に溶接し、また銅より線18cをバイメタル13
の下端部と可動接触子15の後端部下面との間に
溶接して、負荷端子板10aからコイル10、銅
より線18b、バイメタル13、銅より線18c
および可動接触子15に至る電路となし、同時に
ヨーク5等を介し可動接触子15とアーク走行板
12とを同電位に保つている。
Next, to form an electric path, a copper stranded wire 18b with an insulating tube 18a attached is welded between the upper end of the bimetal 13 and the upper end of the coil 10, as shown in FIG. 13
Welded between the lower end of the movable contact 15 and the lower surface of the rear end of the movable contact 15, the load terminal plate 10a is connected to the coil 10, the copper stranded wire 18b, the bimetal 13, and the copper stranded wire 18c.
and an electric path leading to the movable contact 15, and at the same time, the movable contact 15 and the arc traveling plate 12 are kept at the same potential via the yoke 5 and the like.

負荷側接続端子19は第10図のように板状体
を角筒状に折曲して蟻結合した端子枠19aの上
面にねじ孔19bを形成し、端子枠19aの一方
の開口より当金19cを差し込み、他方の開口よ
り負荷側端子板10aを当金19cの下面に差込
んで、端子ねじ19dをねじ込み、その先端を当
金19cの上面に当接する。なお接続される電線
は端子枠19aの前記一方の開口より当金19c
と端子板10aとの間に挿入してねじ19dで圧
締する。
As shown in FIG. 10, the load side connection terminal 19 has a screw hole 19b formed on the upper surface of the terminal frame 19a, which is formed by bending a plate-like body into a rectangular tube shape and dovetailing it. 19c, insert the load-side terminal plate 10a into the lower surface of the stopper 19c through the other opening, screw in the terminal screw 19d, and bring its tip into contact with the upper surface of the stopper 19c. Note that the electric wire to be connected is inserted through the one opening of the terminal frame 19a into the contact hole 19c.
and the terminal board 10a and tighten with screws 19d.

さて、このように構成され組立てられた第1の
ブロツクAは第2図のような形態をとりベース1
の容部1tに収容する。すなわち固定板11に設
けた取付片11iを取付スリツト1mに通して、
ベース1の裏面よりフオーク状のかしめ脚11j
を開脚状にかしめて取付スリツト1mに固定し、
同時に負荷側接続端子19を端子容部1qに位置
決めすると、可動接触子15の先端部はベース1
の第3ブロツク用容部1n上に臨むとともに、ベ
ース1の調整用孔1uに調整ねじ14の頭部が臨
んでベース1の裏側よりバイメタル13を位置調
整できることとなる。またこの状態でカバー2を
ベース1に取付けることにより、端子19の端子
枠19aの上縁角部をカバー2の押え2e″が押付
けて端子19を固定する。
Now, the first block A constructed and assembled in this way takes the form as shown in Fig. 2 and has a base 1.
It is stored in the container 1t. That is, by passing the mounting piece 11i provided on the fixed plate 11 through the mounting slit 1m,
Fork-shaped caulking legs 11j from the back of the base 1
slit into a 1m mounting slit,
At the same time, when the load-side connection terminal 19 is positioned in the terminal receptacle 1q, the tip of the movable contact 15 is attached to the base 1.
The head of the adjusting screw 14 faces the adjustment hole 1u of the base 1, so that the position of the bimetal 13 can be adjusted from the back side of the base 1. Further, by attaching the cover 2 to the base 1 in this state, the presser foot 2e'' of the cover 2 presses the upper edge corner of the terminal frame 19a of the terminal 19, and the terminal 19 is fixed.

(ハ) 第2のブロツク(第3図、第4図、第8
図、第9図) 第2のブロツクBは左右2極の電路をしや断す
る共用機構部で、第8図のように主としてフレー
ム20、ハンドル21、トリツプレバー22、引
外し板23、可動接触子を駆動する可動枠24で
構成される。第8図のようにフレーム20は板状
体をU字形に折曲し、底部中央に取付用ねじ孔2
0a(第3図)を形成し、両側片20b,20c
の略中央に可動枠挿通用縦スリツト20dを穿成
し、縦スリツト20dよりも両側片20b,20
cの一端側にやや傾きをもち両側片20b,20
cの上縁に開口する可動軸ガイドスリツト20e
を形成し、また縦スリツト20dよりも両側片2
0b,20cの他端側にハンドル支持片20fを
垂直上方に延出するとともに引外し板支持片20
gを水平方向外方に延出形成し、ハンドル支持片
20fの上端部内面の端縁を円弧状に膨ませて円
板部20f′を形成し、引外し板支持片20gの先
端部に軸受孔20hを形成し、引外し板支持片2
7gの付根の上面にばね支持突起20iを形成す
るとともに先端部下面に引外し板位置決め突起2
0jを形成し、さらにハンドル支持片20fの中
間高さ位置の側部にハンドルストツパ兼ばね支持
突起20kを形成し、上端部の内面に外面よりプ
レスして支軸20lを突成し、支持片20fの付
根部を可動軸ストツパ部20mとしている。
(c) Second block (Fig. 3, Fig. 4, Fig. 8)
(Fig. 9) The second block B is a shared mechanical part that breaks the electric circuit between the two left and right poles, and as shown in Fig. 8, it mainly consists of a frame 20, a handle 21, a trip lever 22, a trip plate 23, and a movable contact. It is composed of a movable frame 24 that drives the child. As shown in Fig. 8, the frame 20 is made by bending a plate into a U-shape, with two mounting screw holes in the center of the bottom.
0a (Fig. 3), and both side pieces 20b, 20c.
A vertical slit 20d for penetrating the movable frame is bored approximately in the center of the vertical slit 20d.
Both sides 20b, 20 have a slight inclination toward one end of c.
Movable shaft guide slit 20e opening at the upper edge of c
, and the pieces 2 on both sides from the vertical slit 20d
A handle support piece 20f extends vertically upward on the other end side of 0b, 20c, and a trip plate support piece 20
g is formed to extend horizontally outward, and the edge of the inner surface of the upper end of the handle support piece 20f is expanded into an arc shape to form a disc portion 20f', and a bearing is attached to the tip of the trip plate support piece 20g. A hole 20h is formed, and the tripping plate support piece 2
A spring support protrusion 20i is formed on the upper surface of the base of 7g, and a trip plate positioning protrusion 2 is formed on the lower surface of the tip.
0j, and a handle stopper/spring support protrusion 20k is formed on the side of the handle support piece 20f at an intermediate height position, and a support shaft 20l is formed by pressing the inner surface of the upper end portion from the outer surface to provide support. The base portion of the piece 20f is a movable shaft stopper portion 20m.

ハンドル21は絶縁材料を用いて第8図のよう
に略逆Y字体に形成し、上部体をカバー2のハン
ドル用孔2bより突出する操作部21aとし、2
個の裾部体の一方をリンク連接用突出部21b、
他方をリセツト操作用突出部21cとし、三者の
中央連接部に軸受孔21dを穿孔し、軸受孔21
dを含めて両突出部21b,21cの下半分を細
幅にして段21eを形成し、その一側面でリンク
連接用突出部21bに肉厚確保用隆出部21fを
形成して溝21gを残し、隆出部21fに貫通す
る軸孔21hと軸孔21hを中央部で分離するリ
ンク挿通用スリツト21iを形成し、なお軸受孔
21dにばね支持筒部21jを突成している。こ
のハンドル21はばね支持筒部21jにねじりコ
イルばね製復帰スプリング25のコイル孔を通し
て、軸受孔21dをフレーム20のハンドル支持
片20fの上端部に臨ませ、支持片20fを開脚
状態にわずかたわませてその支軸20lを軸受孔
21dに挿入し、この支持片20fにより復帰ス
プリング25を抜止めし、復帰スプリング25の
一端を段21eに沿つて溝21gに通し、また他
端をねじり付勢状態でばね支持突起20kに係止
してハンドル21を第7図のようにオフ状態にす
る方向に回動し、リセツト操作用突出部21cの
段21eがフレーム20のストツパ兼ばね支持突
起20kの表面に当接して位置決めされる。
The handle 21 is formed of an insulating material into a substantially inverted Y shape as shown in FIG.
A protrusion 21b for linking one side of the hem body,
The other is the reset operation protrusion 21c, and a bearing hole 21d is bored in the central connecting part of the three parts.
The lower halves of both protruding parts 21b and 21c, including d, are narrowed to form a step 21e, and on one side of the step 21e, a protruding part 21f for ensuring wall thickness is formed on the link connecting protruding part 21b, and a groove 21g is formed. In addition, a link insertion slit 21i is formed to separate the shaft hole 21h at the center from a shaft hole 21h penetrating the protruding portion 21f, and a spring support cylindrical portion 21j is protruded from the bearing hole 21d. This handle 21 is made by passing the coil hole of the torsion coil spring return spring 25 through the spring support tube 21j, so that the bearing hole 21d faces the upper end of the handle support piece 20f of the frame 20, and the support piece 20f is slightly opened in the open state. The support shaft 20l is inserted into the bearing hole 21d, the return spring 25 is prevented from coming out by the support piece 20f, one end of the return spring 25 is passed through the groove 21g along the step 21e, and the other end is twisted. When the handle 21 is engaged with the spring support protrusion 20k in the energized state and rotated in the direction to turn the handle 21 into the OFF state as shown in FIG. is positioned in contact with the surface of

リンク26は第8図のようにくの字形平板で両
端部に軸孔26a,26bを形成し、その上端部
をハンドル21のスリツト21iに通し、軸孔2
6a,21hを整合させ、フレーム20の外寸幅
の長さをもつた第1の可動軸27を挿通して連接
し(単に挿通するだけ)、ハンドル21をスプリ
ング25のばね力に抗して回動することにより第
1の可動軸27の両端部がフレーム20のストツ
パ部20mに係止して、ハンドル21のオン状態
の姿勢位置決めを構成している。
The link 26 is a dogleg-shaped flat plate with shaft holes 26a and 26b formed at both ends as shown in FIG.
6a and 21h, insert and connect the first movable shaft 27 having the length of the outer dimension width of the frame 20 (simply insert it), and move the handle 21 against the spring force of the spring 25. By rotating, both ends of the first movable shaft 27 are engaged with the stopper portions 20m of the frame 20, thereby positioning the handle 21 in the ON state.

トリツプレバー22は、第8図のようにフレー
ム20の内寸幅より小さい幅をもつた矩形板状体
であつて、一端部を引外し板係合部22aとし、
他端部の両側より下方に軸受片22bを垂設して
軸受片22bに軸孔22cを形成し、また他端部
の端縁中央にリンク挿通スリツト22dを形成し
ている。このトリツプレバー22の前記一端部下
面に接点圧ばね28の一端部が溶接され、接点圧
ばね28はさらに細幅の板ばねで形成し、その他
端部をトリツプレバー22の軸受片22b間を突
き出る程度に形成し、かつその後縁にリンク挿通
スリツト28aを形成している。
The trip lever 22 is a rectangular plate-shaped body having a width smaller than the inner width of the frame 20 as shown in FIG. 8, and has one end as a tripping plate engaging portion 22a.
A bearing piece 22b is vertically disposed below both sides of the other end, and a shaft hole 22c is formed in the bearing piece 22b, and a link insertion slit 22d is formed at the center of the edge of the other end. One end of a contact pressure spring 28 is welded to the lower surface of the one end of the trip lever 22, and the contact pressure spring 28 is further formed of a narrow leaf spring, with the other end extending to the extent that it protrudes between the bearing pieces 22b of the trip lever 22. A link insertion slit 28a is formed at the rear edge.

リンク26、トリツプレバー22および接点圧
ばね28の三者はフレーム20の外寸幅の長さを
もつ第2の可動軸29によりフレーム20のガイ
ドスリツト20eに組立てられる。すなわち、リ
ンク26を第1の可動軸27を支点に回動してそ
の軸孔26bをフレーム20の可動軸ガイドスリ
ツト20eに位置し、接点圧ばね28のリンク挿
通スリツト28aにリンク26の軸孔26bの縁
端部を通し、接点圧ばね28をトリツプレバー側
に近寄せるようにたわみ付勢して軸孔26bと軸
孔22cを整合し、フレーム20のスリツト20
eの一方より第2の可動軸29を軸孔26b,2
2cに貫通して軸端をスリツト20e上に摺動自
在に位置させ、接点圧ばね28のスリツト28a
のある端部を第2の可動軸29の表面に弾接支持
し、その圧力により可動軸29の軸方向移動を規
制する。
The link 26, the trip lever 22, and the contact pressure spring 28 are assembled in the guide slit 20e of the frame 20 by a second movable shaft 29 having a length equal to the outer width of the frame 20. That is, the link 26 is rotated about the first movable shaft 27 to position its shaft hole 26b in the movable shaft guide slit 20e of the frame 20, and the shaft hole 26b of the link 26 is positioned in the link insertion slit 28a of the contact pressure spring 28. The contact pressure spring 28 is biased toward the trip lever side to align the shaft hole 26b and the shaft hole 22c, and the slit 20 of the frame 20 is inserted through the edge of the frame 20.
The second movable shaft 29 is inserted into the shaft holes 26b, 2 from one side of the
2c, the shaft end is slidably positioned on the slit 20e, and the slit 28a of the contact pressure spring 28 is inserted.
An end portion of the movable shaft 29 is elastically supported on the surface of the second movable shaft 29, and the axial movement of the movable shaft 29 is restricted by the pressure.

また引外し板23は第8図のように絶縁性成形
材料で中心に換気兼トリツプレバー逃げ用窓孔2
3aを有する略角板状に成形されて、上片部23
bは両端部を外方に延出してその端部でフレーム
20と反対側側面にバイメタル感圧突起23cを
形成し、上片部23bの窓孔角部にばね支持部2
3dを切欠き、また両側片部23eは窓孔形成面
に支持突起23fを対向突設し、両側片部23e
のフレーム対向面を山形に延出して延出部23g
より横方向外方にプランジヤ感圧用張出部23h
を張出させ、張出部23hのフレーム対向側面に
それぞれ一対のプランジヤ感圧突起23i,23
jを形成して突起23i,23j間でプランジヤ
挿通部23kを形成し、さらに引外し板23の下
端部23lを下方に延出してそのフレーム対向側
面の窓孔側に孔縁を薄肉とするトリツプレバーガ
イドテーパ23mを形成し、下端部下面にトリツ
プレバーラツチ用係合段部23nを形成してい
る。この引外し板23はフレーム20の引外し板
支持片20gに窓孔23aを位置させ、支持片2
0gを閉脚状態にわずかたわませて支軸突起23
fを軸受孔20hに嵌合させ(第4図参照)、さ
らにたわみ線形ばね30の中間部を支持片20g
との間の支軸突起23fにかけて一端部を窓孔上
角部の支持部23dに掛け、他端部を支持片20
gの付根のばね支持突起20iに掛け、もつて引
外し板23を、バイメタル感圧突起23c、段部
23hおよびプランジヤ感圧突起23i,23j
がそれぞれ前進する方向に支軸突起23fを回転
中心として回動付勢し、支持片20gの引外し板
位置決め突起20jに下端部23lを係止してい
る。
The tripping plate 23 is made of an insulating molded material and has a window hole 2 in the center for ventilating and trip lever escape, as shown in Figure 8.
The upper piece part 23 is formed into a substantially rectangular plate shape having 3a.
b has both ends extending outward to form a bimetallic pressure-sensitive protrusion 23c on the side surface opposite to the frame 20, and a spring support part 2 at the corner of the window hole of the upper piece part 23b.
3d is notched, and both side pieces 23e have supporting protrusions 23f protruding from the window hole forming surfaces, and both side pieces 23e
Extend the frame facing surface into a chevron shape to form an extending portion 23g.
Plunger pressure sensitive overhang 23h laterally outward
A pair of plunger pressure-sensitive projections 23i, 23 are provided on the side surface of the projecting portion 23h opposite to the frame.
A plunger insertion part 23k is formed between the protrusions 23i and 23j by forming a plunger insertion part 23k, and further, a lower end part 23l of the tripping plate 23 is extended downward, and a hole edge is made thin on the window hole side of the side surface facing the frame. A lever guide taper 23m is formed, and a trip lever latch engagement step portion 23n is formed on the lower surface of the lower end. This tripping plate 23 has a window hole 23a located in the tripping plate support piece 20g of the frame 20, and
0g is slightly bent in the closed state and the spindle protrusion 23
f into the bearing hole 20h (see Fig. 4), and then attach the middle part of the flexible linear spring 30 to the support piece 20g.
One end is hung on the support part 23d at the upper corner of the window hole, and the other end is attached to the support piece 20.
Hang the spring support protrusion 20i at the base of g and hold the tripping plate 23.
are each urged to rotate in the forward direction about the support shaft protrusion 23f as a rotation center, and the lower end portion 23l is locked to the tripping plate positioning protrusion 20j of the support piece 20g.

可動枠24はフレーム20の縦スリツト20d
に挿通できる厚みとフレーム幅の約3倍の長さを
もち両側縁が円弧状になつた絶縁板状体であつ
て、フレーム20をベース1に取付けた後接点圧
ばね28の下面で縦スリツト20dの長手方向に
スライド自在に挿通され、両端部下面がベース1
に設置された可動接触子15の突起15d上に対
接することとなる。
The movable frame 24 has a vertical slit 20d in the frame 20.
It is an insulating plate-like body with a thickness that can be inserted through the frame 20 and a length about three times the width of the frame, and whose edges are arcuate on both sides. 20d is inserted in a slidable manner in the longitudinal direction, and the lower surfaces of both ends are attached to the base 1.
It comes into contact with the protrusion 15d of the movable contactor 15 installed at.

この第2のブロツクBのベース取付けは、第3
図のようにフレーム20の支持片20gをベース
1の負荷側に向けてベース1の容部1aに挿入
し、引外し板23を少し回転させてプランジヤ挿
通部23k上にプランジヤ7のつば7aが位置す
るように通し、ベース1の裏面の取付孔1dより
取付ビス31を底部のねじ孔20aにねじ込み、
締付固定する。この状態で第2の可動軸29の端
面はベース1のガイド壁1hの内面に対面して軸
方向移動が抜止規制され、リンク26の屈曲部は
ハンドル21の動作にともなつてベース1のスリ
ツト1fを遊通し、引外し板23のバイメタル感
圧突起23cはバイメタル13の上端部13cに
対向し、さらにカバー2をベース1に被覆する
と、ハンドル用孔2bよりハンドル21の操作部
21aが突出し、第1の可動軸27の両端面が垂
下壁2fにガイドされて抜止規制され、またスリ
ツト2hにリンク26の屈曲部が遊通するように
なる。またこのようなベース上の配置構造によ
り、しや断器を屋内外の柱または壁面に取付けた
とき、ベース1は電源側が上位に負荷側が下位に
なるので、バイメタル13やプランジヤ筒体6で
発生した熱は対流作用により引外し板23の窓孔
23a、フレーム20の内部、ベース1のスリツ
ト1fおよびスリツト2hを通てハンドル用孔2
bより外部へ排熱される構成となる。
This second block B is attached to the base of the third block B.
As shown in the figure, insert the support piece 20g of the frame 20 into the container part 1a of the base 1 toward the load side of the base 1, rotate the tripping plate 23 a little, and insert the collar 7a of the plunger 7 onto the plunger insertion part 23k. screw the mounting screw 31 into the screw hole 20a at the bottom from the mounting hole 1d on the back of the base 1,
Tighten and fix. In this state, the end surface of the second movable shaft 29 faces the inner surface of the guide wall 1h of the base 1, and its axial movement is prevented from coming off. 1f, the bimetal pressure-sensitive protrusion 23c of the tripping plate 23 faces the upper end 13c of the bimetal 13, and when the cover 2 is further covered with the base 1, the operating part 21a of the handle 21 protrudes from the handle hole 2b, Both end surfaces of the first movable shaft 27 are guided by the hanging wall 2f and are prevented from coming off, and the bent portion of the link 26 freely passes through the slit 2h. In addition, due to this arrangement on the base, when the circuit breaker is installed on a pillar or wall indoors or outdoors, the power supply side is on the top and the load side is on the bottom of the base 1. The generated heat passes through the window hole 23a of the tripping plate 23, the inside of the frame 20, and the slits 1f and 2h of the base 1 to the handle hole 2 due to convection.
The structure is such that heat is exhausted to the outside from b.

(ニ) 第3のブロツク(第1図、第2図、第10
図) 第3のブロツクCは、第10図のように固定接
触子32、アーク走行板33、消弧グリツド3
4、電源側接続端子35で構成されている。第1
0図のように固定接触子32は所定幅をもつた板
状体であつて一端部をコの字形に上側に折返えし
て折返し片32aの上面に固定接点36を固着す
るとともに固定接点36と折返し片32aの端縁
との間に固定接点36とほぼ同じ高さをもつたア
ーク移行兼アーク走行板位置決め用突起32bを
下面よりプレスして形成し、また接触子32の他
端部にベース設置上の段差に基づきZ字に折曲し
て電源側端子板32cとしている。アーク走行板
33は板状体を略L字形に折曲してその垂直片3
3aの中央に屈曲部より上端部にかけて外面より
プレスして内面側にアーク走行兼熱変形防止用補
強リブ33bを形成し、上端部両側に消弧グリツ
ド載置用段部33cを形成し、また水平片33d
の端縁に前記位置決め突起32bに嵌合する切欠
部33eを形成し、水平片33dの一側部より取
付片33fを垂下させて先端部にフオーク状のか
しめ脚33gを形成している。電源側接続端子3
5の構造は負荷側接続端子と同じであり、同符号
を付している。
(d) Third block (Fig. 1, Fig. 2, Fig. 10)
(Fig.) The third block C consists of a fixed contact 32, an arc traveling plate 33, an arc extinguishing grid 3, as shown in Fig. 10.
4. Consists of a power supply side connection terminal 35. 1st
As shown in Figure 0, the fixed contact 32 is a plate-shaped body with a predetermined width, and one end is folded upward in a U-shape to fix a fixed contact 36 to the upper surface of the folded piece 32a. An arc transition/arc travel plate positioning protrusion 32b having approximately the same height as the fixed contact 36 is formed by pressing from the lower surface between the edge of the folded piece 32a and the other end of the contact 32. The power supply side terminal board 32c is bent into a Z-shape based on the step on the base installation. The arc traveling plate 33 is made by bending a plate-like body into a substantially L-shape, and forming a vertical piece 3 of the plate-shaped body.
A reinforcing rib 33b for arc travel and prevention of thermal deformation is formed on the inner surface by pressing from the outer surface from the bending part to the upper end at the center of 3a, and a stepped part 33c for placing arc extinguishing grids is formed on both sides of the upper end. Horizontal piece 33d
A notch 33e that fits into the positioning protrusion 32b is formed at the end edge of the mounting plate 33, and a mounting piece 33f is suspended from one side of the horizontal piece 33d to form a fork-shaped caulking leg 33g at its tip. Power supply side connection terminal 3
5 has the same structure as the load side connection terminal, and is given the same reference numeral.

また消弧グリツド34は7枚の磁性体製グリツ
ドプレート34aの一端にV字溝34bを切欠
き、両側に位置決め凹部34cとかしめ突起34
dとを形成して等間隔に並べ、突起34dに対応
した孔を有する絶縁製サイドプレート34eをそ
の両側に係合させかしめ固定したもので、サイド
プレート34eの両側部にかぎ形に凹んだ載置部
34fを形成し、サイドプレート34eの上下面
を凹部34cに位置決めする。
Further, the arc extinguishing grid 34 has a V-shaped groove 34b cut out at one end of seven magnetic material grid plates 34a, and a positioning recess 34c and a caulking protrusion 34 on both sides.
d are arranged at equal intervals, and an insulating side plate 34e having holes corresponding to the protrusions 34d is engaged and fixed by caulking on both sides of the insulating side plate 34e. A placement portion 34f is formed, and the upper and lower surfaces of the side plate 34e are positioned in the recess 34c.

第3のブロツクCの組立はつぎのようにベース
1上で行う。すなわち、端子板32cに電源側接
続端子35を取付けた状態で、第2図のようにそ
の端子35をベース1の端子容部1rに嵌めると
ともに固定接触子32をベース1の容部1vに嵌
め、予め設定したその容部幅と接触子幅の一致に
より、横方向、長手方向および下方向の位置決め
を行い、ついでアーク走行板33の取付片33f
をベース1の取付スリツト1wに通しながら水平
片33dの切欠部33eを突起32bに位置決め
してアーク走行板33を折返し片32a上に押付
けながら折返し片32aの弾力のもとでベース1
の裏面よりかしめ脚33gを取付スリツト1wに
かしめ付けする。これにより接触子32は堅固に
固定され、折返し片32aの弾圧力によりアーク
走行板33の水平片33dと折返し片32aが圧
接して電気的に接続され、また突起32bへの位
置決めにより垂直片33aは予定位置に立設さ
れ、前記したアーク走行板12の上部垂直片12
aと対向することとなる。一方固定接点36の上
方に可動接点16が対峙する。また消弧グリツド
34にV字溝34bを下向きにして載置部34f
によりアーク走行板12,33の上端部の段12
b,33cに載置され、この状態でカバー2がベ
ース1に被覆されることにより、カバー裏面の押
えリブ2jが消弧グリツド34の上面を押し付け
て固定することとなり、アーク走行板33のリブ
33bの上端部はグリツド34のV字溝34bの
最奥部に臨むようになるとともに、カバー2の側
壁内面と垂下壁2fおよびベース1のガイド壁1
hの外面とで消弧グリツド34および接点16,
36の部分を包囲する消弧室32gを形成してい
る。またこのような配置構造により、消弧部とバ
イメタル13とが距離をもつて分離され、しかも
しや断器の壁面取付姿勢では消弧グリツドが上位
にあるので消弧部の熱影響をバイメタル13に及
ぼすことがなく、またカバー2のスリツト2h、
切欠部2mおよびスリツト2bにより距離をもつ
たアークガス排気通路を形成し、消弧グリツド3
4の上面とカバー2のハンドル用孔2bとは垂下
壁2fで仕切られてさらに大きい隔絶距離を形成
している。
The third block C is assembled on the base 1 as follows. That is, with the power supply side connection terminal 35 attached to the terminal board 32c, the terminal 35 is fitted into the terminal receptacle 1r of the base 1 as shown in FIG. 2, and the fixed contact 32 is fitted into the receptacle 1v of the base 1. By matching the preset container width and the contact width, positioning is performed in the lateral, longitudinal and downward directions, and then the mounting piece 33f of the arc traveling plate 33 is fixed.
is passed through the mounting slit 1w of the base 1, the notch 33e of the horizontal piece 33d is positioned on the protrusion 32b, and while pressing the arc running plate 33 onto the folded piece 32a, the base 1 is moved under the elasticity of the folded piece 32a.
Caulk the caulking leg 33g to the mounting slit 1w from the back side of the screw. As a result, the contactor 32 is firmly fixed, and the elastic force of the folded piece 32a presses the horizontal piece 33d of the arc traveling plate 33 and the folded piece 32a to electrically connect them, and the vertical piece 33a is positioned against the protrusion 32b. is erected at a predetermined position, and is connected to the upper vertical piece 12 of the arc traveling plate 12 described above.
It will be facing a. On the other hand, the movable contact 16 faces above the fixed contact 36. Also, the V-shaped groove 34b is placed downward in the arc extinguishing grid 34, and the mounting portion 34f is
Accordingly, the step 12 at the upper end of the arc running plate 12, 33
b, 33c, and the cover 2 is covered with the base 1 in this state, so that the pressing rib 2j on the back side of the cover presses and fixes the upper surface of the arc extinguishing grid 34, and the rib of the arc traveling plate 33 The upper end of the grid 33b faces the innermost part of the V-shaped groove 34b of the grid 34, and also faces the inner side wall of the cover 2, the hanging wall 2f, and the guide wall 1 of the base 1.
arc extinguishing grid 34 and contact 16,
An arc extinguishing chamber 32g surrounding a portion 36 is formed. In addition, due to this arrangement, the arc extinguishing part and the bimetal 13 are separated by a distance, and since the arc extinguishing grid is located at the upper level when the disconnector is mounted on the wall, the thermal influence of the arc extinguishing part is reduced by the bimetal 13. and the slit 2h of the cover 2,
The notch 2m and the slit 2b form an arc gas exhaust passage with a distance, and the arc extinguishing grid 3
4 and the handle hole 2b of the cover 2 are partitioned by a hanging wall 2f to form a larger separation distance.

() 動作 オン動作、トリツプ動作、オフ動作および消
弧作用に分説する。
() Operation It is divided into ON operation, trip operation, OFF operation, and arc extinguishing operation.

(イ) オン動作 (a) オフ状態(第6図、第7図および第11
図b):第7図のように引外し板23はば
ね30によりフレーム20の支持片20g
の突起20jに正常姿勢に位置決めされ、
ハンドル21はスプリング25によりフレ
ーム20の支持片20gの突起20kに位
置決めされ、またハンドル21のリセツト
操作用突出部21cによりトリツプレバー
22の引外し板係合部22aを押し下げて
引外し板23のトリツプレバーラツチ用係
合段部23nに掛け、一方可動接触子15
は第6図のように復帰ばね17の作用で可
動接点16を固定接点36から開極離間
し、突部15d上の可動枠24をフレーム
20の縦スリツト20dの上位に位置させ
ている。この開極により電源側接続端子3
5と負荷側接続端子19との間は電路が開
路しオフ状態となる。
(b) ON operation (a) OFF state (Figures 6, 7 and 11)
Figure b): As shown in Figure 7, the tripping plate 23 is supported by the support piece 20g of the frame 20 by the spring 30.
is positioned in a normal posture on the protrusion 20j of
The handle 21 is positioned by the spring 25 on the protrusion 20k of the support piece 20g of the frame 20, and the reset operation protrusion 21c of the handle 21 pushes down the trip plate engaging portion 22a of the trip lever 22 to release the trip plate 23. The movable contact 15 is hooked onto the engagement step portion 23n for the bar latch.
As shown in FIG. 6, the movable contact 16 is separated from the fixed contact 36 by the action of the return spring 17, and the movable frame 24 on the protrusion 15d is positioned above the vertical slit 20d of the frame 20. Due to this opening, the power supply side connection terminal 3
5 and the load side connection terminal 19, the electric circuit is opened and the load side connection terminal 19 is in an off state.

(b) オフ状態からオン状態への動作:オフ状
態のハンドル21を図で左方向に押して第
2図、第3図および第11図aの状態にす
る。第3図のようにハンドル21を図の位
置に押すと、支軸20lを中心として第1
の可動軸27が図のように仮想線から実線
へ回動し、リンク26を介して第2の可動
軸29がスリツト20eを下降動作する。
これに伴いトリツプレバー22は引外し板
23に支持された係合部22aを支点とし
て回動し、この接点圧ばね28が可動枠2
4の上面に当つてこれを押し下げる。そし
て可動枠24の下面は第2図のように可動
接触子15の突起15dに当接して可動接
触子15の回動により突起15d上を移動
しながら可動接触子15を復帰ばね17の
反発力に抗して押下げる。このようにし
て、第2の可動軸29および可動接触子1
5は第1の可動軸27が支軸20lと第2
の可動軸29を含む平面(死点)に接近す
るまで下降動作して可動接点16が固定接
点36に接触するに至り、今度は可動接触
子15の支持のもとに第2の可動軸29に
付勢状態で支持されている接点圧ばね28
がさらに可動枠24に押されてたわみ、そ
の反作用として接点16,36間に接点圧
を与える。第1の可動軸27が前記平面
(死点)を越えると、接点圧ばね28の反
作用により第1の可動軸27を平面から越
えた方向へ離れるように作用して直近に位
置するフレーム20のストツパ部20mに
係止して支持され、ハンドル21は第3図
の状態を維持するオン状態となる。こうし
て電路は閉極し、電源が負荷に投入された
こととなる。
(b) Operation from the OFF state to the ON state: Push the handle 21 in the OFF state to the left in the figure to bring it into the states shown in FIGS. 2, 3, and 11a. When the handle 21 is pushed to the position shown in Fig. 3, the first
The movable shaft 27 rotates from the virtual line to the solid line as shown in the figure, and the second movable shaft 29 moves down the slit 20e via the link 26.
Along with this, the trip lever 22 rotates about the engagement part 22a supported by the tripping plate 23, and this contact pressure spring 28
4 and push it down. The lower surface of the movable frame 24 contacts the protrusion 15d of the movable contact 15 as shown in FIG. Press down against the In this way, the second movable shaft 29 and the movable contact 1
5, the first movable shaft 27 is connected to the support shaft 20l and the second movable shaft 27.
The movable contact 16 moves downward until it approaches the plane (dead center) that includes the movable shaft 29, and the movable contact 16 comes into contact with the fixed contact 36. This time, with the support of the movable contact 15, the second movable shaft 29 contact pressure spring 28 supported in a biased state;
is further pushed by the movable frame 24 and deflects, and as a reaction, a contact pressure is applied between the contacts 16 and 36. When the first movable shaft 27 exceeds the plane (dead center), the reaction of the contact pressure spring 28 acts to move the first movable shaft 27 away from the plane in a direction beyond the plane. The handle 21 is engaged and supported by the stopper portion 20m, and the handle 21 is in the on state in which the state shown in FIG. 3 is maintained. In this way, the electric circuit is closed and power is applied to the load.

(ロ) トリツプ動作 (a) バイメタル動作(第11図c):オン状
態で電路に過電流が流れるとバイメタル1
3が自己加熱される。これにより第2図に
おいてバイメタル13はわん曲動作し、下
端部13bを支点にして上端部13cが引
外し板23のバイメタル感圧突起23cに
向かつて移動する。調整ねじ14によつて
所定の限時特性に設定されたこの相互間距
離をバイメタル13が移動すると、突起2
3cを押して引外し板23を支軸23fを
中心として回動し、第3図において引外し
板23のトリツプレバーラツチ用係合段部
23nがトリツプレバー22の係合部22
aから離れる。この引外し動作により、可
動枠24と可動接触子15を介して復帰ば
ね17のばね力および接点圧ばね28のば
ね力の作用が顕現して、トリツプレバー2
2は第2の可動軸29を中心として勢いよ
く跳上げられ、これと同時に可動枠24を
押上げて可動接触子15は開極動作し、第
5図および第11図cのトリツプフリーの
状態で電路がしや断されたこととなる。
(b) Trip operation (a) Bimetal operation (Fig. 11c): When an overcurrent flows in the circuit in the on state, bimetal 1
3 is self-heated. As a result, the bimetal 13 performs a bending motion in FIG. 2, and the upper end 13c moves toward the bimetal pressure-sensitive protrusion 23c of the tripping plate 23 using the lower end 13b as a fulcrum. When the bimetal 13 moves through this mutual distance set to a predetermined time characteristic by the adjustment screw 14, the protrusion 2
3c to rotate the tripping plate 23 around the support shaft 23f, and as shown in FIG.
move away from a. Due to this tripping operation, the spring force of the return spring 17 and the spring force of the contact pressure spring 28 appear through the movable frame 24 and the movable contact 15, and the trip lever 2
2 is jumped up with great force around the second movable shaft 29, and at the same time the movable frame 24 is pushed up and the movable contact 15 is opened, and is in the trip-free state shown in FIGS. 5 and 11c. This means that the electrical circuit has been severed.

(b) 電磁動作(第11図d,e):電路に短
絡電流が流れると、コイル10の励磁が大
きくなりプランジヤ7を支持する復帰ばね
8のばね力よりも大きい吸引力を発生して
固定鉄心9に引き付けられ、バイメタル1
3が感圧突起23cを押すよりも一層早く
瞬時にプランジヤ7のつば7aが引外し板
23のプランジヤ感圧突起23i,23j
に係合して引外し板23を引外し動作させ
るとともに(第11図d)、プランジヤ7
の細軸下端部7dが固定鉄心9の挿通孔9
aより下方に突き抜けて復帰ばね17の中
心を通り可動接触子15の後端部を叩打し
て強制的に可動接触子15を開極駆動する
(第11図e)。
(b) Electromagnetic operation (Fig. 11 d, e): When a short-circuit current flows through the electric circuit, the excitation of the coil 10 increases, generating an attractive force greater than the spring force of the return spring 8 that supports the plunger 7, and fixing it. Attracted to iron core 9, bimetal 1
3 presses the pressure-sensitive protrusion 23c, the collar 7a of the plunger 7 instantaneously hits the plunger pressure-sensitive protrusions 23i, 23j of the tripping plate 23.
The plunger 7
The lower end 7d of the thin shaft is inserted into the insertion hole 9 of the fixed iron core 9.
a and passes through the center of the return spring 17 and strikes the rear end of the movable contact 15, forcibly driving the movable contact 15 to open (FIG. 11e).

(c) リセツト動作:前記トリツプフリーの状
態(第11図c,d)になると第5図にお
いて第2の可動軸29に加わる押上力はな
くなり、第2の可動軸29と支軸20lと
を含む平面が死点として構成されなくなる
ので、ハンドル21に加わつている復帰ば
ね25によりオフ状態に復帰する。ハンド
ル21の復帰にともなつてリセツト作用突
出部21cによりトリツプレバー22の係
合部22aは下降し、引外し板23の係合
段部23nに臨む。一方電路のしや断によ
りバイメタル13は自然冷却されて復帰
し、またプランジヤ7はコイル励磁がなく
なつて復帰ばね8により復帰し、これによ
り引外し板23はばね30によつて正常姿
勢に復帰する。このようにしてリセツトさ
れ第6図、第7図および第11図bに示す
オフ状態となる。
(c) Reset operation: When the trip-free state (FIG. 11c, d) is reached, the upward force applied to the second movable shaft 29 in FIG. 5 disappears, and the second movable shaft 29 and the supporting shaft 20l are Since the plane is no longer configured as a dead center, the return spring 25 attached to the handle 21 returns to the OFF state. As the handle 21 returns, the engagement portion 22a of the trip lever 22 is lowered by the reset projection 21c and faces the engagement stepped portion 23n of the tripping plate 23. On the other hand, due to the breakage of the electric circuit, the bimetal 13 is naturally cooled and returned to its original position, and the plunger 7 is returned to its original position by the return spring 8 due to the loss of coil excitation, and the tripping plate 23 is thereby returned to its normal position by the spring 30. do. In this way, it is reset to the OFF state shown in FIGS. 6, 7, and 11b.

(ハ) オフ動作(オン状態からオフ状態):第1
1図aのオン状態でハンドル21をオフ方向
(右方向)へ倒す操作をする。これにより第
1の可動軸27はフレーム20のストツパ部
20mから離れて第3図の実線から仮想線の
状態へと移行しようとし、支軸20lと第2
の可動軸29を含む平面(死点)を越えると
第2の可動軸29に加わつている接点圧ばね
28と復帰ばね17による押上力とハンドル
に加わつている復帰ばね25とによりハンド
ル21は勢いよく第11図bに示すオフ状態
に倒れる。同時に第2の可動軸29は上動し
トリツプレバー22は係合部22aを支点と
して回動し、可動接触子15は可動枠24を
押上げて開極する。引外し板23は定位置の
ままである。こうしてオフ状態となる。
(c) Off operation (from on state to off state): 1st
In the on state shown in Figure 1a, the handle 21 is tilted in the off direction (to the right). As a result, the first movable shaft 27 separates from the stopper portion 20m of the frame 20 and attempts to transition from the solid line to the virtual line in FIG.
When the handle 21 crosses the plane (dead center) containing the movable shaft 29 of the second movable shaft 29, the push-up force from the contact pressure spring 28 and the return spring 17 applied to the second movable shaft 29 and the return spring 25 applied to the handle cause the handle 21 to move with momentum. It often collapses into the off state shown in Figure 11b. At the same time, the second movable shaft 29 moves upward, the trip lever 22 rotates about the engaging portion 22a, and the movable contact 15 pushes up the movable frame 24 to open the pole. The trip plate 23 remains in place. In this way, it is turned off.

(ニ) 消弧作用 短絡電流をしや断したとき接点16,36
間で発生するアークにより、可動接触子15
と固定接触子32の折返し片32aとが接点
16,36に向かつて同方向に対向している
ので、開極後も第6図において横U字形に電
流が流れ、これによりアークを消弧グリツド
34の方向に伸長させる磁気駆動力が発生
し、アークを固定接触子32の位置決め突起
32bからアーク走行板33のリブ33b上
へと移行させる一方、可動接触子15側も突
部15cから同電位のアーク走行板12へ移
行させて、消弧グリツド34のV字溝34b
に吸引し、グリツドプレート34aでアーク
電圧を高めて消弧に至らせる。またアークガ
スは消弧グリツド34の背後よりカバー2の
押えリブ2jにより形成される空間に排出
し、スリツト2lおよびリブ33bによる凹
みを有するアーク走行板33との間の排気通
路を通つて切欠部2mおよびスリツト2nよ
り外部へ排気される。
(d) Arc-extinguishing action Contacts 16 and 36 when the short-circuit current is extinguished
Due to the arc generated between the movable contact 15
Since the folded piece 32a of the fixed contact 32 faces the contacts 16 and 36 in the same direction, a current flows in a horizontal U-shape as shown in FIG. 6 even after opening, thereby extinguishing the arc. A magnetic driving force is generated to extend the arc in the direction of 34, causing the arc to move from the positioning protrusion 32b of the fixed contact 32 onto the rib 33b of the arc traveling plate 33, while the movable contact 15 side also moves from the protrusion 15c to the same potential. V-shaped groove 34b of the arc extinguishing grid 34
The grid plate 34a increases the arc voltage to extinguish the arc. Further, the arc gas is discharged from behind the arc extinguishing grid 34 into the space formed by the holding rib 2j of the cover 2, and passes through the exhaust passage between the slit 2l and the arc travel plate 33, which has a recess formed by the rib 33b, to the notch 2m. and is exhausted to the outside through the slit 2n.

以上のように、この回路しや断器は、短絡電流
検出素子を構成するヨーク5と、アーク走行板1
2と、可動接触子15とを一体的に構成したため
ブロツク化でき、機械的電気的部品を削減して組
立を簡単にできるとともにアーク走行板12と可
動接触子15とを同電位に保つことができて、短
絡時のアークを中滑に移行することができる。
As described above, this circuit breaker consists of the yoke 5 that constitutes the short circuit current detection element and the arc traveling plate 1.
2 and the movable contact 15 are integrally constructed, it can be made into a block, and the number of mechanical and electrical parts can be reduced to simplify assembly, and the arc traveling plate 12 and the movable contact 15 can be kept at the same potential. As a result, the arc at the time of a short circuit can be shifted to a smooth one.

この発明の第2の実施例を第12図に示す。す
なわち、この回路しや断器は、第1の実施例にお
いて一枚の板状体を折曲形成してヨーク5′とア
ーク走行板12′とを一体形成し、固定板11′の
折返えし側とは反対側の端部に垂直片11″を延
設してヨーク5′とアーク走行板12′の連接部に
かしめ、また固定板11′に可動接触子支持片5
0を垂設させたもので、その他は第1の実施例と
同様である。
A second embodiment of the invention is shown in FIG. That is, in the first embodiment, this circuit breaker is constructed by bending a single plate to integrally form the yoke 5' and the arc traveling plate 12', and by folding the fixed plate 11'. A vertical piece 11'' is extended to the end opposite to the yoke 5' and caulked to the joint between the yoke 5' and the arc travel plate 12', and a movable contact support piece 5 is attached to the fixed plate 11'.
0 is provided vertically, and the rest is the same as the first embodiment.

この場合、部品相互の組立がさらに簡単になる
ほか、第1の実施例と同様の効果を有する。
In this case, the parts can be more easily assembled with each other, and the same effects as in the first embodiment can be obtained.

以上のように、この回路しや断器は、アーク走
行板を連結するとともに可動接触子支持片および
取付用固定部を有するヨークと、このヨークに保
持された短絡電流検出素子と、前記可動接触子支
持片に略中間部が回転自在に軸着されて後端が前
記短絡電流検出素子の出力部に対向するとともに
先端に可動接点を設けて開極時に前記先端が前記
アーク走行板に接近する可動接触子と、前記可動
接触子の前記後端と前記ヨークとの間に介在され
た復帰ばねとを備えたため、つぎの作用効果があ
る。
As described above, this circuit breaker includes a yoke that connects arc traveling plates and has a movable contact support piece and a fixing part for mounting, a short circuit current detection element held by this yoke, and the movable contactor. A substantially middle portion is rotatably attached to the child support piece, and a rear end faces the output portion of the short-circuit current detection element, and a movable contact is provided at the tip, so that the tip approaches the arc running plate when the contact is opened. Since it includes a movable contact and a return spring interposed between the rear end of the movable contact and the yoke, it has the following effects.

すなわち、可動接触子がヨークに軸着されたた
め、簡単な構成によりアーク走行板と可動接触子
とを同電位に保つことができる。また可動接触子
の回動中心に対して可動接点が短絡電流検出素子
および復帰ばねと反対側に位置しているため、可
動接点に発生するアークの熱によつて短絡電流検
出素子および復帰ばねが影響を受けるのを低減で
き、とくに短絡電流検出素子の出力部で可動接触
子の後端を押す際に熱で出力部が可動接触子に溶
着することを防止できるとともに復帰ばねの焼損
を防止することができ、動作を確実にすることが
できる。さらにアーク走行板、可動接触子、ヨー
ク、短絡電流検出素子および復帰ばねを一体的に
ブロツク化して取付用固定部により器台に固定す
ることができるため、電気的機械的部品点数を削
減できるとともに組立が簡単になる。
That is, since the movable contact is pivotally attached to the yoke, the arc running plate and the movable contact can be kept at the same potential with a simple configuration. In addition, since the movable contact is located on the opposite side of the rotation center of the movable contact from the short-circuit current detection element and the return spring, the short-circuit current detection element and the return spring are damaged by the heat of the arc generated at the movable contact. In particular, when pushing the rear end of the movable contact at the output section of the short-circuit current detection element, it can prevent the output section from welding to the movable contact due to heat, and also prevent burnout of the return spring. can be used to ensure reliable operation. Furthermore, the arc travel plate, movable contact, yoke, short circuit current detection element, and return spring can be integrally made into a block and fixed to the instrument base using the mounting fixing part, which reduces the number of electrical and mechanical parts. Assembly becomes easier.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の第1の実施例のオン状態の
一部破断平面図、第2図はその―線断面図、
第3図は第1図―線断面図、第4図は第3図
―線断面図、第5図はトリツプ状態の第1図
―線断面図、第6図はオフ状態の第1図―
線断面図、第7図はオフ状態の第1図―線
断面図、第8図は第2のブロツクの分解斜視図、
第9図はカバーを取除いた状態の斜視図、第10
図は第1および第3のブロツクの分解斜視図、第
11図はしや断器の動作線図、第12図は第2の
実施例の第1のブロツクの側面図である。 5,5′…ヨーク、7d…出力部となる細軸後
端部、10…短絡電流検出素子のコイル、11,
11′…取付用固定部を構成する固定板、12,
12′…アーク走行板、12g,50…可動接触
子支持片、15…可動接触子、16…可動接点、
17…復帰ばね。
FIG. 1 is a partially cutaway plan view of the first embodiment of the present invention in the on state, and FIG. 2 is a cross-sectional view taken along the line,
Figure 3 is a cross-sectional view taken from Figure 1, Figure 4 is a cross-sectional view taken from Figure 3, Figure 5 is a cross-sectional view taken from Figure 1 in the trip state, and Figure 6 is a cross-sectional view taken from Figure 1 in the off state.
7 is a line sectional view taken from FIG. 1 in the off state, and FIG. 8 is an exploded perspective view of the second block.
Figure 9 is a perspective view with the cover removed; Figure 10 is a perspective view with the cover removed;
The figures are exploded perspective views of the first and third blocks, FIG. 11 is an operational diagram of the armature cutter, and FIG. 12 is a side view of the first block of the second embodiment. 5, 5'... Yoke, 7d... Thin shaft rear end portion serving as output section, 10... Coil of short circuit current detection element, 11,
11'...Fixing plate constituting the mounting fixing part, 12,
12'... Arc traveling plate, 12g, 50... Movable contact support piece, 15... Movable contact, 16... Movable contact,
17...Return spring.

Claims (1)

【特許請求の範囲】[Claims] 1 アーク走行板を連結するとともに可動接触子
支持片および取付用固定部を有するヨークと、こ
のヨークに保持された短絡電流検出素子と、前記
可動接触子支持片に略中間部が回転自在に軸着さ
れて後端が前記短絡電流検出素子の出力部に対向
するとともに先端に可動接点を設けて開極時に前
記先端が前記アーク走行板に接近する可動接触子
と、前記可動接触子の前記後端と前記ヨークとの
間に介在された復帰ばねとを備えた回路しや断
器。
1. A yoke that connects the arc traveling plate and has a movable contact support piece and a fixing part for attachment, a short circuit current detection element held by this yoke, and a substantially middle portion of which is rotatably attached to the movable contact support piece. a movable contact whose rear end faces the output part of the short-circuit current detection element, and a movable contact is provided at the tip so that the tip approaches the arc running plate when the contact is opened; and the rear end of the movable contact. A circuit breaker comprising a return spring interposed between an end and the yoke.
JP2719680A 1980-02-29 1980-02-29 Circuit breaker Granted JPS56121247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2719680A JPS56121247A (en) 1980-02-29 1980-02-29 Circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2719680A JPS56121247A (en) 1980-02-29 1980-02-29 Circuit breaker

Publications (2)

Publication Number Publication Date
JPS56121247A JPS56121247A (en) 1981-09-24
JPS6258096B2 true JPS6258096B2 (en) 1987-12-04

Family

ID=12214330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2719680A Granted JPS56121247A (en) 1980-02-29 1980-02-29 Circuit breaker

Country Status (1)

Country Link
JP (1) JPS56121247A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007087824A (en) * 2005-09-22 2007-04-05 Kawamura Electric Inc Circuit breaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457171A (en) * 1977-10-15 1979-05-08 Matsushita Electric Works Ltd Switching interlock device of breaker for wiring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457171A (en) * 1977-10-15 1979-05-08 Matsushita Electric Works Ltd Switching interlock device of breaker for wiring

Also Published As

Publication number Publication date
JPS56121247A (en) 1981-09-24

Similar Documents

Publication Publication Date Title
KR950013424B1 (en) A protecting circuit brealeer having a thermo-magnetic sub-assembly
KR100462657B1 (en) Circuit breaker
JP2000340093A (en) Overcurrent trip device for circuit breaker
JP2001035341A (en) Circuit breaker
JPS6318821B2 (en)
JPS6258096B2 (en)
JPS6119481Y2 (en)
JPS6143810B2 (en)
KR101301335B1 (en) Circuit breaker
JP3503534B2 (en) Electromagnetic trip device for circuit breakers
JP2992448B2 (en) Earth leakage breaker
JP2002329450A (en) Earth leakage breaker
JPH027133B2 (en)
JP3151319B2 (en) 2-pole remote control relay
JPH0512981A (en) Over-current tripping device for circuit breaker
JPH0751720Y2 (en) Circuit breaker accessory switch
JP2003317600A (en) Circuit breaker
JP3328996B2 (en) Circuit breaker
JP4091012B2 (en) Circuit breaker
JP3151318B2 (en) Shaft structure of interlocking lever of remote control relay with multiple poles
JP2003162953A (en) Ground-fault interrupter
JPS6215959Y2 (en)
JPS6212618B2 (en)
JPS6226903Y2 (en)
JP2003272507A (en) Circuit breaker