JP2009118616A - Electromagnetic contactor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize an electromagnetic contactor by reducing the depth dimension and the height dimension thereof. <P>SOLUTION: The dimension in the depth direction of the electromagnetic contactor 1 is reduced by the amount that a power supply conductor 16 is arranged to orthogonally intersect with the longitudinal direction of a fuse 11, and the height dimension of the electromagnetic contactor 1 is reduced by the amount that the longitudinal direction of a switch 20 is arranged in the same direction as the longitudinal direction of the fuse 11, thereby the electromagnetic contactor 1 can be miniaturized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electromagnetic contactor that supplies power from a plurality of phase power supply conductors to a load conductor via a fuse and a switch.

  In general, a receiving / transforming facility uses a switch for daily operation stop, and the load current is electrically switched by the switch. There is a type of switch that cuts off the fuse by blowing the fuse when the current exceeds the daily load current, that is, the accident current. This switch is called a magnetic contactor with a fuse (hereinafter abbreviated as an electromagnetic contactor). In general, the conventional magnetic contactor has a drawback that the height direction becomes high because the longitudinal direction of the fuses arranged horizontally and the longitudinal direction of the switch are arranged orthogonally.

As a conventional electromagnetic contactor technique, in the electromagnetic contactor storage panel 101 shown in FIG. 9, a switch (load breaker or electromagnetic contactor) 103 disposed in the housing 102 is provided in the partition wall 104. Connected to the disconnection portion 105 on the input side. The power supply conductor 106 connected to the disconnecting part 105 is connected to the upper power supply 107 of the switch 103. The load conductor 109 connected to the output-side disconnecting portion 108 extends in the depth direction on the back grounding portion 110 side that covers the inside of the housing 102. Reference numeral 111 denotes a current transformer connected to the load conductor 109, and 112 denotes a cable head. (For example, see Patent Document 1)
Further, in the electromagnetic contactor 201 shown in FIG. 10, the magnetic contactor 201 is connected to the disconnecting portion 203 in the partition wall 202. The power supply conductor 204 and the load conductor 205 connected to the disconnecting portion 203 extend in the depth direction on the back grounding portion 206 side that closes the casing of the magnetic contactor. (For example, see Patent Document 2)
JP 58-163207 A JP 58-29307 A

   In the above prior art, the magnetic contactor not only has the disadvantage that the dimension H in the height direction and the dimension W in the depth direction become large, but also because the depth direction of the magnetic contactor becomes longer, the electromagnetic contactor is attached to the components in the electromagnetic contactor. Work is not easy.

  An object of the present invention is to provide a small-sized electromagnetic contactor with reduced depth and height dimensions.

A first aspect of the present invention is an electromagnetic contactor for supplying power from a plurality of power source conductors to a load conductor via a fuse and a switch.
A fuse is arranged in the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, and the power supply conductor orthogonal to the longitudinal direction of the fuse is arranged to face the side surface in the longitudinal direction of the fuse. And were electrically connected.

A second aspect of the present invention is an electromagnetic contactor for supplying power from a plurality of phase power supply conductors to a load conductor via a fuse and a switch,
The fuse and the switch are arranged in the same plane in the magnetic contactor so that the longitudinal direction faces the depth side of the magnetic contactor, and the power supply conductor orthogonal to the longitudinal direction of the fuse is arranged opposite to the longitudinal side surface of the fuse. The fuse and the power supply conductor were electrically connected.

A third aspect of the present invention is an electromagnetic contactor for supplying power from a plurality of power supply conductors to a load conductor via a fuse and a switch,
A fuse is placed in the magnetic contactor so that the longitudinal direction faces the depth side of the magnetic contactor, and the fuse is placed on one side of the switch that is arranged in the same direction as the longitudinal direction of the fuse. The power supply conductor orthogonal to the longitudinal direction was disposed opposite to the longitudinal side surface of the fuse, and the fuse and the power supply conductor were electrically connected.

A fourth aspect of the present invention is an electromagnetic contactor for supplying power from a plurality of power supply conductors to a load conductor via a fuse and a switch,
The fuse and the switch that are arranged opposite to each other are arranged so that the longitudinal direction of the fuse is oriented in the vertical direction, extends in the same direction as the longitudinal direction of the fuse, and the power supply conductor is arranged opposite the side surface of the fuse longitudinal direction. And were electrically connected.

5th of this invention is an electromagnetic contactor which supplies the electric power from the power supply conductor of a several phase to a load conductor via a fuse and a switch,
A fuse is arranged on the intermediate support plate of the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, and the power supply conductor is arranged opposite to the longitudinal side surface of the fuse so as to be orthogonal to the longitudinal direction of the fuse. Attach a switch so that the longitudinal direction is on the depth side of the magnetic contactor on the intermediate support plate opposite to the surface, and place the transformer and current transformer between the fuse, the switch, and the magnetic contactor floor, The primary charging part of the transformer and the charging part of the current transformer were electrically connected to a fuse and a switch arranged above the transformer and the current transformer.

6th of this invention is an electromagnetic contactor which supplies the electric power from the power supply conductor of a several phase to a load conductor via a fuse and a switch,
A fuse is arranged on the intermediate support plate of the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, a power supply conductor is arranged so as to be orthogonal to the longitudinal direction of the fuse, and the intermediate support plate on the side opposite to the fuse arrangement surface Attach a switch so that the longitudinal direction is on the depth side of the magnetic contactor, and place a transformer and current transformer between the fuse, the switch, and the magnetic contactor floor surface. Are connected to the transformer and the fuse and the switch located above the current transformer, and the load side contact connected to the current transformer is connected to the load conductor lead-out part. The load conductor lead-out portion was disposed between the back grounding portion that blocks the depth of the magnetic contactor, and the fuse and current transformer facing the magnetic contactor floor.

According to the electromagnetic contactor of the present invention, the combination of the magnetic contactor and the power supply conductor is equivalent to the amount that the power supply conductor is arranged so as to be orthogonal to the longitudinal side surface of the fuse of each phase arranged in the longitudinal direction. Since the depth dimension can be reduced, the depth of the casing of the magnetic contactor can be reduced, and attachment work in the depth direction can be easily performed.
In addition, compared to the case where the longitudinal direction of the switch is arranged in the height direction, in the present invention, the height dimension of the electromagnetic contactor is reduced by the amount that the longitudinal direction of the switch is arranged in the same direction as the longitudinal direction of the fuse. it can.
As a result, the depth dimension of the combination of the magnetic contactor and the power supply conductor can be reduced, so that the depth dimension of the housing can be reduced. In addition, since the height of the magnetic contactor can be reduced, it is possible to produce a multi-stage type magnetic contactor housing that stacks the magnetic contactors in a small size, or in the case of the same height, more It became possible to load the electromagnetic contactor.

Example 1
Embodiments according to the present invention will be described with reference to FIGS. 1A, 1B and 1C, and FIGS.

  1A, 1B and 1C are longitudinal sectional views of an electromagnetic contactor according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. FIG. 6 is a cross-sectional view taken along line BB in FIG. 1, 2, and 3 are electrically connected.

  As shown in FIG. 1 to FIG. 3 and FIG. 6, the magnetic contactor 1 supplies power from a plurality of phases of the power conductor 2 to the load conductor lead-out portion 5 via the fuse 3 and the switch 4.

  The magnetic contactor 1 is accommodated in the housing 6. The housing 6 has an insertion port 7 at one end, and is configured in a box shape by closing the depth side opposite to the insertion port 7 with a back surface grounding portion 8.

  The magnetic contactor 1 has a magnetic contactor floor 9. Wheels 10 are provided on the magnetic contactor floor 9. The electromagnetic contactor 1 can be moved between the insertion port 7 and the back surface grounding portion 8 by a wheel 10.

  The magnetic contactor 1 includes an intermediate support plate 11 made of an insulating member between the fuse 3 and the switch 4.

  For example, as shown in FIG. 3, the intermediate support plate 11 is supported on the electromagnetic contactor floor 9 by a plurality of support columns 12. Further, as shown in FIG. 2, the support column 12 is attached to the electromagnetic contactor floor 9 by screws 13, and the partition plate 14 is attached to the intermediate support plate 11. Further, sandwiching brackets 15A and 15B for sandwiching the fuse 3 are attached to the insertion port side and the back grounding portion side of the intermediate support plate 11 facing each partition plate 14.

  The fuse 3 has three phases arranged in parallel in the horizontal direction so that the longitudinal direction faces the back grounding portion 8 side. Each of the fuses 3 is partitioned by a partition plate 14. Since the fuse 3 has the same configuration in all three phases, the one-phase fuse 3 will be described.

  The fuse 3 has a power supply side terminal 17 and a load side terminal 18 at both ends of a cylindrical main body (hereinafter referred to as a cylinder) 16. These terminals 17 and 18 are inserted into the clamps 15A and 15B, and the clamps 15A and 15B are tightened by the clamps 19 (see FIG. 6) made of nuts and bolts to fix the fuse 3.

  Further, the power supply conductor 2 is vertically arranged so as to be orthogonal to the longitudinal side surface of the fuse 3. Connection between the power supply side terminal 17 and the power supply conductor 2 is performed as follows. As shown in FIG. 2, the relay conductor 21 is connected to the lower end side of the power supply side terminal 17. The relay conductor 21 protrudes from the lower side of the cylinder part 16 (see FIG. 6) through the middle of the cylinder part (between the power supply side terminal 17 and the load side terminal 18) and perpendicularly to the cylinder part 12 to the power supply conductor 2 side. The power contact 22 is attached to the protruding end.

  The power contact 22 can adjust the current capacity appropriately by increasing or decreasing the number of contact pieces in accordance with the current capacity. The power contact 22 is fixed to the relay conductor 21 and the intermediate support plate 11 with screws 20.

  As shown in FIG. 1A, the operation unit 23 is operated and the electromagnetic contactor 1 is moved by the wheel 10 so that the power contact 22 is electrically connected to or separated from the power conductor 2 by contact or separation. .

  The power from the power supply conductor 2 passes through the power supply contact 22 and the relay conductor 21, flows from the power supply side terminal 17 through the fuse wire (not shown) in the cylindrical portion 16, and reaches the load side terminal 18. As shown in FIG. 1C, the load side terminal 18 is connected to the movable side conductor 25 of the switch 4 via a contactor 24. The switch 4 uses a vacuum valve in this embodiment. As in the case of the power contact 22, the contact 24 can adjust the current capacity appropriately by increasing or decreasing the number of contact pieces according to the current capacity.

  As described above, the switch 4 disposed in the horizontal direction so that the longitudinal direction is directed to the back grounding portion 8 side is disposed below the fuse 3, and the longitudinal direction of the switch 4 is disposed in the horizontal direction. Since the height of the electromagnetic contactor 1 can be lowered, the electromagnetic contactor 1 can be reduced in size compared to the case where the longitudinal direction of the switch 4 is arranged in the vertical direction.

  The movable conductor 25 of the switch 4 is connected to the operating device 23 through a surface plate 28 extending downward from the intermediate support plate 11 via an insulator 26 and a wipe spring 27.

  Electric power flows from the movable side conductor 25 to the fixed side conductor 31 through a contact point (not shown) in the switch 4. The fixed-side conductor 31 is attached to an insulating support portion 32 extending downward from the intermediate support plate 11 by tightening means 33 such as a bolt or a nut.

And the operation part 23 is driven, the movable conductor 25 is moved, a movable contact point is contacted / separated with a fixed contact point (not shown), and electric power is turned on and off.
(1) Thus, in comparison with the conventional arrangement where the power supply conductor 2 is arranged in the same direction as the longitudinal direction of the fuse 3, the present invention is orthogonal to the longitudinal side surface of the fuse 3 of each phase arranged in the longitudinal direction. Thus, the depth direction of the combination of the electromagnetic contactor 1 and the power supply conductor 2 can be reduced by the amount of the power supply conductor 2 arranged, the depth dimension of the housing can be reduced, and the electromagnetic contactor 1 The installation work in the depth direction can now be done easily.
(2) Compared to the case where the longitudinal direction of the switch is arranged in the height direction, in the present invention, the electromagnetic contactor 1 is equivalent to the arrangement of the longitudinal direction of the switch 4 in the same direction as the longitudinal direction of the fuse 3. The height dimension of can now be reduced. Further, if the switch 4 and the fuse 11 are arranged on the same plane so that the longitudinal direction is arranged in the same direction as the longitudinal direction of the fuse 3, the thin electromagnetic contactor 1 having a lower height can be manufactured. .
According to the above (1) and (2), the depth dimension due to the combination of the electromagnetic contactor 1 and the power supply conductor 2 can be reduced, the height dimension can be reduced, and the electromagnetic contactor 1 can be reduced in size. The housing of the multi-stage product type magnetic contactor in which the magnetic contactors 1 are stacked on the magnetic contactor can be manufactured in a small size, or more electromagnetic contactors can be stacked if the housings are the same height. In addition, the ability to reduce the height of the magnetic contactor can increase the stability of the multi-stage electromagnetic contactor when it is installed, for example, by reducing the center of gravity of the multi-stage electromagnetic contactor and improving the earthquake resistance. This can also be said for the magnetic contactor 1 alone.
(3) Furthermore, by arranging the switch 4 on the lower side of the fuse 3, the installation area of the electromagnetic contactor 1 can be reduced. Also, compared to the case where the switch 4 with the longitudinal direction arranged vertically is arranged below the fuse 3, the magnetic contactor 1 is installed in such a way that the center of gravity is lowered and the earthquake resistance is improved as much as the height is lowered. Stability can be increased.
(Example 2)
4 is a P direction arrow view of the transformer 41 in FIG. 1A, and FIG. 5 is a Q direction arrow view of the current transformer 42 in FIG. 1B.

  As shown in FIG. 1A, the fuse 3 and the switch 4 are attached to the upper surface and the lower surface of the intermediate support plate 11 of the magnetic contactor 1, and the fuse longitudinal direction, the longitudinal direction of the switch, and the electromagnetic contactor floor 9. And a transformer 41 and a current transformer 42 are arranged between the fuse 3 and the switch 4 and the magnetic contactor floor 9. The transformer 41 and the current transformer 42 are fixed to the electromagnetic contactor floor 9 by screws 43.

  As shown in FIG. 4, in the transformer 41, two insulating cylinders 45 pass through the intermediate support plate 11 from the main body wound with the conductor around the iron core 44 and extend to the vicinity of the load side terminal 18 of the fuse 3. Yes. Two primary lead wires 46A and 46B wound around the iron core 44 pass through the insulating cylinder 45 through the protective fuse 47, and as shown in FIG. 2, the one-phase load side terminal 48A and the two-phase load It is connected between the side terminals 48B. These primary lead lines 46 </ b> A and 46 </ b> B constitute a primary charging unit 46.

  The primary charging unit 46 is drawn to the upper side of the transformer 41. The line voltage from the primary side charging unit 46 between the fuses 3 is measured by the load side U terminal 49 and the load side V terminal 50 of FIG.

  As shown in FIG. 5, the current transformer 42 has a primary side lead wire 52 </ b> A and a secondary side lead wire 52 </ b> B wound around the iron core 51, and these primary side lead wire 52 </ b> A and secondary side lead wire. 52B is pulled out to the switch 4 side above the current transformer.

  As shown in FIG. 1A, the primary lead line 52 </ b> A is connected to the fixed conductor 31 of the switch 4. The primary lead wire 52A is disposed between the switch 4 and the insulating support portion 32, and is fixed between the switch 4 and the insulating support portion 32 by tightening with a tightening means 33 including a bolt and a nut. Is done.

  The secondary lead wire 52B and the load side contactor 53 are fixed by tightening means 54 composed of bolts and nuts.

  As shown in FIG. 3, the load side contactor 53 is formed in a plate shape, and is arranged so that the main surfaces of the front and back surfaces are upper and lower surfaces. The load side contactor 53 is connected to the load conductor drawing portion 5. The load conductor lead-out portion 5 is formed in a plate shape and is arranged so that the main surfaces of the front and back surfaces are the left and right surfaces.

  As shown in FIG. 6, the load conductor drawing portion 5 is attached to a load conductor support portion 57 in the insulating cover 56. The load side contactor 53 can adjust the current capacity appropriately by increasing / decreasing the number of contact pieces in accordance with the current capacity as in the case of the power supply contactor 22 and the contactor 24 described above.

  As shown in FIG. 5, the primary lead wire 52 </ b> A, the secondary lead wire 52 </ b> B, and the fastening means 33 are the charging unit 52, and are connected to the switch 4 side above the current transformer 42.

As described above, the primary charging unit 46 of the transformer 41 and the charging unit 52 of the current transformer 42 are drawn out to the fuse 3 side and the switch 4 side, which are above the transformer 41 and the current transformer 42, In addition to being connected to the fuse 3 and the switch 4, the connection position of the primary charging unit 46 is higher than the connection position of the charging unit 52, compared to the connection position being the same position, Since the insulation distance becomes longer, the insulation of the charging part can be simplified correspondingly, the transformer 41 and the current transformer 2 can be arranged close to each other, and the charging part can be miniaturized. The height and depth direction of the magnetic contactor 1 can be reduced.
Furthermore, compared to the case where the charging unit 52 and the iron core 44 are arranged at the same height, the charging unit 52 is arranged obliquely at a position higher than the iron core 44 of the transformer 41 in this third embodiment. As a result, the depth direction of the magnetic contactor 1 can be particularly reduced by a sufficient insulation distance, so that the load-side conductor lead-out portion 5 can be disposed between the lower side of the fuse 3 and the current transformer 42. Became. As a result, the electromagnetic contactor 1 can be miniaturized.

As shown in FIG. 3, the load-side conductor lead-out portion 5 can select two types of lead-out methods: a cable A drawn to the back grounding portion 8 or a cable B drawn to the left and right. As a result, the drawn-out cable A or drawn-out cable B can be drawn to the back or left and right, so that it is possible to select a drawing method according to the situation, and the cable drawing work is facilitated.
Next, the load side conductor lead-out portion 5 and the insulating cover 56 shown in FIG. The insulating cover 56 is disposed in the electromagnetic contactor facing the back grounding portion 8, the fuse 3 and the load conductor drawing portion 5. The insulating cover 56 is made of an insulating member such as an insulating resin material.

  As shown in FIG. 6, the insulating cover 56 covers the fuse end portion on the back grounding portion side so as to surround it, and forms a fuse chamber 61 that houses the fuse end portion therein. A power supply conductor chamber 63 is formed between the fuse chamber side surface and the magnetic contactor floor surface side, and the fuse chamber side surface and the fuse chamber side surface are partitioned by an insulating partition plate 62. A power supply conductor through path 64 is formed so as to be orthogonal to the longitudinal direction of the fuse 3. The power supply conductor 2 passes through the power supply conductor through path 64 vertically.

  A load conductor drawing chamber 65 is formed below the fuse chamber 61 between the side surfaces of the adjacent power supply conductor chambers 63 via the insulating partition plate 62. The facing surface of the load conductor drawing chamber 65 facing the back grounding portion 8 is open. A load conductor support portion 57 that supports the load conductor extraction portion 5 is provided on the ceiling surface of the load conductor extraction chamber 65.

  An inlet 66 and a communication inlet 67 are provided in the fuse chamber 61, the load conductor drawing chamber 65, and the power supply conductor chamber 63 on the side opposite to the back grounding portion 8. The communication inlet 67 communicates between the fuse chamber 61 and the power supply conductor chamber 63. The communication inlet 67 also communicates with the inlet 66 side, and the power contact 22 can pass from the inlet 66 and the communication inlet 67 to the power conductor chamber 63.

The fuse 3, the load contact 53 and the power contact 22 are inserted from the inlet 66 and the communication inlet 67, and the fuse 3, the power contact 22 and the load contact 53 are connected to the fuse chamber 61 and the power conductor chamber 63. Arranged in the load conductor drawing chamber 65. In this case, the power contact 22 can reach the fuse chamber 61 and the power conductor chamber 63 from the communication inlet 67 without any obstacle. Further, the dielectric breakdown voltage of the fuse 3 can be increased by disposing the insulating cover 56 between the back grounding portion 8 and the fuse 3 and the power contact 22.
As described above, according to the present invention, it is possible to reduce the size of the electromagnetic contactor, the housing, and the combination structure thereof. In addition, the size of the magnetic contactor 1 allows the size of the housing 6 and the combination of the magnetic contactor 1 and the housing 6 to be reduced.
(Example 3)
The longitudinal direction of the fuse 3 and the switch 4 is arranged vertically as shown in FIGS. 7 and 8, and the power supply conductor 2 is arranged so as to face the longitudinal side surface of the fuse in the same direction as the longitudinal direction of the fuse. As compared with the case where the fuse 3 and the switch 4 are arranged on the floor so that the longitudinal direction thereof is horizontal, the electromagnetic contactor 1 can greatly reduce the installation area. Other configurations are substantially the same as those in the first and second embodiments, and thus the duplicated description is omitted.

It is a sectional side view showing a schematic structure of an electromagnetic contactor concerning an embodiment of the present invention. It is a left side partial expanded sectional view of Drawing 1 (A). It is a right side partial expanded sectional view of Drawing 1 (A). It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. FIG. 4 is a schematic front view of the transformer used in FIGS. 1 to 3. FIG. 4 is a schematic front view of the current transformer used in FIGS. 1 to 3. It is CC sectional view taken on the line of FIG. 6 is a longitudinal sectional view of an electromagnetic contactor according to Example 3. FIG. 6 is a schematic side view of an electromagnetic contactor according to Embodiment 3. FIG. It is explanatory drawing of a prior art example. It is explanatory drawing of another prior art example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electromagnetic contactor, 2 ... Power supply conductor, 3 ... Fuse, 4 ... Switch, 5 ... Load side conductor extraction part, 6 ... Housing, 7 ... Insertion port, 8 ... Back grounding part, 9 ... Electromagnetic contactor floor Surfaces, 10 ... wheels, 11 ... intermediate support plates, 12 ... posts, 13 ... screws, 14 ... partition plates, 15A, 15b ... clamp metal fittings, 16 ... cylindrical main body, 17 ... power supply side terminals, 18 ... loads Side terminal, 19 ... Fastener, 21 ... Relay conductor, 22 ... Power contact, 23 ... Operation part, 24 ... Contact, 25 ... Movable conductor, 26 ... Insulator, 27 ... Wipe spring, 31 ... Fixed side conductor 32 ... Insulation support part, 33 ... Tightening means, 41 ... Transformer, 42 ... Current transformer, 44 ... Iron core, 45 ... Insulating cylinder, 46 ... Primary side charging part, 46A ... Primary side lead wire, 46B ... Two Secondary leader, 47 ... Protective fuse, 52 ... Charging part, 52A ... Primary leader, 52B ... Secondary leader 53 ... Load side contact, 56 ... Insulation cover, 57 ... Load conductor support, 61 ... Fuse chamber, 62 ... Insulation partition plate, 63 ... Power supply conductor chamber, 64 ... Power supply conductor through passage, 65 ... Load conductor extraction chamber , 66 ... entrance, 67 ... communication entrance, 51 ... iron core.

Claims (6)

In an electromagnetic contactor that supplies power from a multiphase power supply conductor to a load conductor via a fuse and a switch,
A fuse is arranged in the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, and the power supply conductor orthogonal to the longitudinal direction of the fuse is arranged to face the side surface in the longitudinal direction of the fuse. And an electrical contactor. In an electromagnetic contactor that supplies power from a multiphase power supply conductor to a load conductor via a fuse and a switch,
The fuse and the switch are arranged in the same plane in the magnetic contactor so that the longitudinal direction faces the depth side of the magnetic contactor, and the power supply conductor orthogonal to the longitudinal direction of the fuse is arranged opposite to the longitudinal side surface of the fuse. An electromagnetic contactor characterized by electrically connecting a fuse and a power supply conductor. In an electromagnetic contactor that supplies power from a multiphase power supply conductor to a load conductor via a fuse and a switch,
A fuse is arranged in the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, and the fuse is superimposed on one side of the switch that is arranged in the same direction as the longitudinal direction of the fuse. An electromagnetic contactor characterized in that a power supply conductor orthogonal to the longitudinal direction is disposed opposite to the side surface in the longitudinal direction of the fuse, and the fuse and the power supply conductor are electrically connected. In an electromagnetic contactor that supplies power from a multiphase power supply conductor to a load conductor via a fuse and a switch,
The fuse and the switch placed opposite to each other are placed so that the longitudinal direction is perpendicular to the fuse, and extends in the same direction as the longitudinal direction of the fuse, and the power supply conductor is placed facing the side of the fuse longitudinal direction. An electromagnetic contactor that is electrically connected to a conductor. In an electromagnetic contactor that supplies power from a multiphase power supply conductor to a load conductor via a fuse and a switch,
A fuse is arranged on the intermediate support plate of the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, and the power supply conductor is arranged opposite to the longitudinal side surface of the fuse so as to be orthogonal to the longitudinal direction of the fuse. Attach a switch so that the longitudinal direction is on the depth side of the magnetic contactor on the intermediate support plate opposite to the surface, and place the transformer and current transformer between the fuse, the switch, and the magnetic contactor floor, An electromagnetic contactor characterized in that a primary charging part of a transformer and a charging part of a current transformer are electrically connected to a fuse and a switch disposed above the transformer and the current transformer. In an electromagnetic contactor that supplies power from a multiphase power supply conductor to a load conductor via a fuse and a switch,
A fuse is arranged on the intermediate support plate of the magnetic contactor so that the longitudinal direction is directed to the depth side of the magnetic contactor, a power supply conductor is arranged so as to be orthogonal to the longitudinal direction of the fuse, and the intermediate support plate on the side opposite to the fuse arrangement surface Attach a switch so that the longitudinal direction is on the depth side of the magnetic contactor, and place a transformer and current transformer between the fuse, the switch, and the magnetic contactor floor surface. Are connected to the transformer and the fuse and the switch located above the current transformer, and the load side contact connected to the current transformer is connected to the load conductor lead-out part. The electromagnetic contactor is characterized in that the load conductor lead-out portion is disposed between a back grounding portion that blocks the depth of the magnetic contactor, and a fuse and a current transformer facing the magnetic contactor floor.

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