JP5956042B2 - Circuit breaker terminal structure - Google Patents

Description

The present invention relates to a terminal structure of a circuit breaker that is electrically connected to a bus provided in a distribution board, and more specifically, a selective terminal device that selectively connects a bus required for connection among buses of each phase. It concerns on the terminal structure of the circuit breaker which has this.

As an example of selectively connecting the circuit breaker terminal device and the busbar,
For example, as in Patent Literature 1 and Patent Literature 2, there is a device in which a switching device that selectively switches a bus connected to a terminal of a circuit breaker is provided on the bus.

In Patent Document 1, as shown in FIG. 12, bus bars (reference numerals 1, 2, and 3 in Patent Document 1) forming a main electric circuit and bus bar feet connected to terminals of a circuit breaker (Patent Document 1) 1 is provided with a switching device between the reference numerals 101, 301, 601 and the like. This switching device is provided in a hole of a long hole (reference number 602 of patent document 1) and a switching piece (reference number 8 of patent document 1) provided in a connection bar (reference number 6 of patent document 1) constituting the switching device. The position of the switching screw (reference numeral 7 in Patent Document 1) penetrated together is moved to one end or the other end of the elongated hole to select a conductor to be conducted, and the conductor connected to the terminal of the circuit breaker is switched to change the circuit. The voltage supplied to the circuit breaker is changed.

In Patent Document 2, as shown in FIG. 13, as in Patent Document 1, a bus bar (reference numerals 11, 12, and 13 in Patent Document 2) that forms a main electric circuit and a bus bar connected to a terminal of a circuit breaker Between the connecting portions (reference numerals 1301, 2001, etc. of Patent Document 2). And a screw (reference numeral 17 of patent document 2) which penetrates both a long hole provided in a feed plate (reference numeral 20 of patent document 2) and a cylindrical conductor (reference numeral 18 of patent document 2) constituting the switching device. Is moved to one end or the other end of the elongated hole, the conductor to be conducted is selected, the bus bar connected to the terminal of the circuit breaker is switched, and the voltage supplied to the circuit breaker is changed.

JP-A-9-271108 JP 2002-135912 A

In the case where the above-described switching device that selectively switches the bus connected to the terminal of the circuit breaker is provided on the bus side, there are the following problems. The switching unit in the switching device will be described with reference to FIG. 14 schematically showing, but when attention is paid to the screw heads located in the slot portions representing the switching state, (a) The arrangement is regular and it is possible to grasp at a glance which of the external conductors is connected to the circuit breaker. Here, with respect to (b) showing the case where the connection is switched for a part of the conductors, the way of arranging the screw heads located on the right side in the figure is different from the way of arranging the other screw heads on the left side and the central part. By looking at the condition, it can be understood that the selected conductor has changed. However, for (c), which shows the case where connections are switched for many conductors, the arrangement of the screw heads varies widely and overall is irregular, and it is very clear which conductor is connected to the circuit breaker. It will be difficult.

For this reason, when only a part of the external conductors to be connected is changed, it is easy to determine which conductor is connected to the circuit breaker, but the number of conductors whose connection has been changed As the number increases, it becomes difficult to grasp, and there is a possibility that misunderstandings are likely to occur for those who work, when making a connection or checking after connection. In addition, it is difficult to grasp the voltage supplied to the circuit breaker easily, and when a wrong conductor is selected and connected to the circuit breaker, an unnecessary voltage is supplied to the load-side circuit. In such a case, there is a risk of damage to the load-side wiring and electrical equipment. Further, since it is necessary to switch a large number of screws, improvement in workability is desired.

On the other hand, when changing the voltage, when the switching device is moved by loosening the switching screw, the bus bar feet 101 and 301 and the bus bar connection parts 2001 and 1601 remain connected to the circuit breaker. Therefore, if an unnecessary force is applied, a force is also applied to the terminal of the circuit breaker, and there is a risk that the terminal is loosened or damaged, or an electrical failure occurs.

Therefore, the present invention has been made in view of the above problems,
Even when the busbar is selectively connected by the terminal device in the circuit breaker or after the busbar is connected to the terminal device, which circuit breaker selects which bus for the multiple circuit breakers. It is easy to grasp directly from the front side of the circuit breaker,
Furthermore, when switching the connection state, no tools are required and workability can be improved.
The voltage selectively applied to the circuit breaker can be clearly grasped according to the position of the terminal device,
In addition, the voltage of the bus bar cannot be changed in the state where the bus bar foot or the connection part is connected to the terminal part of the circuit breaker, and electrical failure of the terminal part is less likely to occur.
It is an object of the present invention to provide a terminal structure for a circuit breaker having a selective terminal device that is unlikely to cause misidentification of a connection bus or supply voltage for a worker.

The terminal structure of the circuit breaker according to the present invention is configured to solve the above-described problems, and one of the power supply side terminals for receiving electricity from the busbar of the distribution board is provided to the body of the circuit breaker. By connecting the power supply side terminal to the movable power supply side terminal, the position of connection between the power supply side terminal and the busbar is variable, and a predetermined power supply bus is selected from the buses of each phase of the distribution board. A voltage display unit that displays in advance a plurality of power supply voltages that can be applied in the distribution board, and is engaged with an interlocking member that is interlocked with the movable power supply side terminal to move the connection position of the movable power supply side terminal Accordingly, the voltage display unit includes a hidden plate for concealing the display of the power supply voltage that is not actually applied when the predetermined bus and the movable power supply side terminal are connected, and the circuit breakers are arranged in parallel. When the width of the body is taken, The plate is positioned at the other end in the width direction when the movable power supply side terminal is positioned at one end in the width direction, and is disposed in the width direction when the movable power supply side terminal is positioned at the other end in the width direction. The terminal structure of the circuit breaker is characterized in that the display of the voltage actually applied to the circuit breaker from the predetermined bus bar in the voltage display portion is exposed so as to be visible from the outside. Good.

According to this configuration, the hidden plate is interlocked with the movement of the movable power supply side terminal, which bus is actually selected according to the position of the movable power supply side terminal, and the indication of the applied voltage is displayed. Therefore, it is possible to provide a terminal structure for a circuit breaker that makes it easy for an operator to check the busbar to which the circuit breaker is connected and the voltage value to be supplied.

In addition, since a voltage display part can be formed over the entire surface in the width direction of the container and visibility can be improved when the supply voltage is confirmed from the outside, a circuit that makes it easier to grasp the displayed voltage value more clearly A circuit breaker terminal structure can be provided.

As described above, according to the present invention, even when the busbar is selectively connected by the terminal device in the circuit breaker, or even after the terminal device and the busbar are connected, for the plurality of circuit breakers, It is easy to grasp directly from the front side of the circuit breaker which circuit breaker is selected and which busbar is connected, and further, it is possible to improve workability by eliminating the need for tools when switching the connection state, The voltage selectively applied to the circuit breaker can be clearly grasped according to the position of the terminal device, and the voltage can be changed in the state where the bus bar foot and connection are connected to the terminal of the circuit breaker. It is possible to provide a circuit breaker terminal structure having a selective terminal device that is difficult to cause an electrical failure of a terminal portion, and is difficult for a worker to make a mistake of a connection bus or a supply voltage. it can.

The external appearance perspective view of the circuit breaker which shows 1st Embodiment is shown. The internal block diagram of the circuit breaker which concerns on the same embodiment is shown. The movable power supply side terminal part of the circuit breaker concerning the embodiment is shown. The terminal of the circuit breaker concerning the embodiment is shown. The 2nd operation part concerning the embodiment is shown. The figure which combines the 2nd operation part which concerns on the same embodiment, a moving direction inversion means, and a movable power supply side terminal part is shown. The figure which combined the 2nd operation part which concerns on the same embodiment, a moving direction inversion means, and a movable power supply side terminal part with the body of a circuit breaker is shown. Each connection position of the movable power supply side terminal part which concerns on the embodiment is shown. Each connection position of the movable power supply side terminal part which concerns on the embodiment is shown. Each connection position of the movable power supply side terminal part which concerns on the embodiment is shown. The external view at the time of arranging a plurality of circuit breakers in parallel is shown. The figure showing the conventional connection state is shown. The figure showing the conventional connection state is shown. The figure which switched in several places in the conventional connection state is shown.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, the configuration of the circuit breaker according to the first embodiment will be described with reference to FIGS.
The circuit breaker 1 according to the first embodiment is used for a single-phase three-wire commercial electric circuit. As shown in FIGS. 1 and 2, the circuit breaker is configured by overlapping cases 101a and 101b divided in the width direction when the direction in which the circuit breakers 1 are arranged in parallel is the width direction. It has a substantially box-shaped vessel. And to this vessel body, the power supply side terminal portions 102A and 102B connected to the conductors of each pole for supplying power to the circuit breaker 1, and the power supply to the load side of the circuit breaker 1 Load-side terminal portions 103A and 103B connected to the conductors of the respective poles are provided, and main conductors of the respective poles electrically connecting the power-side terminal portions 102A and 102B and the load-side terminal portions 103A and 103B. A fixed contact that is electrically connected to the power supply side and the load side, and a movable contact that is fixedly attached to each movable contact that is detachably opposed to the fixed contact, and opens and closes the movable contact. An opening / closing mechanism and a handle 104 which is connected to the opening / closing mechanism by a link and operates the opening / closing mechanism from the outside of the device body to be a first operation unit for turning on and off the electric circuit are disposed.

Next, the power supply side terminal portions 102A and 102B will be described.
The power supply side terminal portions 102A and 102B have a surface on which the operation portion of the body is provided as a front surface a, a surface facing the front surface a serving as a mounting surface to the distribution board as a back surface b, and the front surface a When the side surface c adjacent to the back surface b is a side surface c, it is provided at one end of the side surface c in the longitudinal direction of the body so as to be sandwiched between the cases 101a and 101b.

Of the power supply side terminal portions, 102A is a terminal portion (referred to as a fixed terminal portion) disposed and fixed to the container body, and 102B is an end portion on one side surface side and the other side surface in the width direction of the container body. It is a terminal portion (referred to as a movable power supply side terminal portion) disposed in a hollow portion provided on the side surface of the container so that it can continuously reciprocate between two places on the side end portion.

(Structure of movable power supply side terminal part)
On the power source side of the container body, three busbars are provided in advance in the distribution board so as to correspond to the positions of the fixedly arranged terminal portion 102A and the movable power supply side terminal portion 102B. L1, L2, and N connecting portions are disposed, the fixed terminal portion 102A is connected to the bus L2, and the movable power supply side terminal portion 102B is connected to a predetermined bus L1 in one position, In the case of the other position, it is connected to a predetermined bus N. When the movable power supply side terminal portion 102B is connected to the bus L1, a voltage of 200V is applied to the circuit breaker 1, and when the movable power supply side terminal portion 102B is connected to the bus N, the circuit breaker is applied. A voltage of 100 V is applied to 1.

Further, in order to adjust the phase balance of the single-phase three-wire system, when the fixed terminal portion 102A is connected to the bus L1, the movable power supply side terminal portion 102B is connected to the bus L2 in one position, In the case of position, it is connected to the bus N. When the movable power supply terminal portion 102B is connected to the bus L2, a voltage of 200V is applied to the circuit breaker 1, and when the movable power supply terminal portion 102B is connected to the bus N, the circuit A voltage of 100 V is applied to the circuit breaker 1.

3 and 4 show the movable power supply side terminal portion 102B and the blade receiver 102B3 accommodated in the movable power supply side terminal portion 102B. The fixed terminal portion 102A and the movable power supply side terminal portion 102B have blades formed in a shape in which a substantially U-shaped tip portion having a substantially virtue-shaped cross section is constricted as a terminal for connecting to the bus bar. The receptacle is stored. 3 and 4 show the movable power supply side terminal portion 102B and the blade receiver 102B3 accommodated in the movable power supply side terminal portion 102B. The blade holder sandwiches the bus bar at the narrowed portion and supplies power to the load side.

The movable power supply side terminal portion 102B is configured as a non-charging portion whose outer shell is not electrically connected to the blade receiver 102B3. A rack 102B1 provided with a plurality of teeth is formed on the front side of the outer shell, and plays a role of transmitting the moving operation of the movable power supply side terminal portion 102B to a hidden plate 105 described later. Further, a long rib 102B2 is provided in the width direction on the back side of the outer shell, and the movable power supply side terminal portion 102B is formed by fitting the rib 102B2 with the groove portion 101c provided on the body side. Acts as a guide when reciprocating in the width direction.

(Voltage display structure)
A voltage display 107 is provided on the front side of the container so as to be visible from the outside. The voltage display unit 107 is provided over the width direction of the container, and the voltage value that can be applied to the circuit breaker in the distribution board is classified and described in the central part. The voltage value that can be applied is a voltage value that is supplied to the circuit breaker 1 according to the connection position of the bus bar and the movable power supply side terminal portion 102B. In the case of this embodiment, the voltage value is approximately from the center to one side surface. The character of 100V, which is the first supply voltage, is displayed, and the character of 200V, which is the second supply voltage, is displayed from the approximate center to the other side surface. The voltage display unit 107 is configured by writing a voltage display on a nameplate and attaching it to a container. In addition, you may print or stamp directly on a container.

(Hidden board structure)
Next, the predetermined bus and the movable power source side terminal of the voltage display unit are engaged with the interlocking member interlocked with the movable power source side terminal portion 102B, and the connection position of the movable power source side terminal is moved. The hidden plate 105 that hides the display of the power supply voltage that is not actually applied at the time of connection will be described.

The hidden plate 105 is provided on the front side of the container, and the voltage display unit 107 is located on the back side of the hidden plate 105. The concealing plate 105 includes a long rectangular base formed to be approximately half the length in the width direction of the container, and a rack 105b provided with a plurality of teeth provided on the back side of the base. I have. The rack 105b is formed wider at the end of the long rib 105b1 formed on the base than the rib 105b1, and when the rib 105b1 is fitted into the opening 101b3 provided in the container body, the rack 105b is mounted. The rack 105b functions as a guide for moving in the width direction, and the rack 105b serves as a retaining member to the front side.

The concealing plate 105 is continuously connected between two positions near the one side surface and the other side surface in the width direction of the body in conjunction with the movement of the movable power supply side terminal portion 102B by the pinion 106 described later. Move back and forth. Then, at each of the positions near one side surface and the other side surface, the voltage display unit 107, that is, the movable power supply side terminal unit 102B located on the back surface of the base is not positioned by the base. The voltage display unit 107 provided on the front surface a side of the container on the side is concealed. The voltage display unit located on the back surface of the base is hidden by the base and cannot be seen from the front side, and the voltage display unit located on the portion not hidden by the base is visible from the front side. The voltage value on the concealed side is a voltage value that is not actually applied, and the voltage value exposed to the outside is a voltage value that is actually applied.

Next, the pinion 106 that links the movable power supply side terminal portion 102B and the hidden plate 105 will be described.
The pinion 106 is formed by providing a plurality of teeth around the shaft 106a. The teeth are engaged with the rack 105b provided on the hidden plate 105 and the rack 105b provided on the hidden plate 105 so as to mesh with the rack 102B1 provided on the movable power supply side terminal portion 102B. It arrange | positions so that it may be located between racks 102B1 provided in 102B. The pinion 106 is disposed near the front surface of the body of the circuit breaker, with a shaft 106a pivotally supported by a bearing portion 101d formed by recessing a part of the body.

FIG. 7 shows a partial cross-sectional view of the arrangement of the hidden plate 105, the pinion 106, and the movable power supply side terminal portion 102B in the container.
As shown in FIG. 7, the pinion 106 is arranged between the hidden plate 105 and the movable power supply side terminal portion 102b, and the racks 105b and 102B1 and the shaft 106a pivotally supported by the container body are rotated. As the movable power supply terminal portion 102B is moved from one connection position to the other connection position, the hidden plate 105 is interlocked. More specifically, the hidden plate 105 linked to the movable power supply side terminal 120B is located at the other end when the movable power supply side terminal 102B is located at the one end, while the movable power supply side terminal 102B is located at the other end. Is located at the one end, and the hidden plate 105 moves in the direction opposite to the direction in which the movable power supply side terminal 102B is moved in the width direction.

Wall portions 101b10 and 101a10 that contact when the hidden plate 105 is located at one of the end portions in the width direction of the container body are formed on the front side of the container body. The protruding heights of the wall portions 101b10 and 101a10 are formed to be equal to the thickness of the side surface portion of the hidden plate 105, and when the hidden plate 105 contacts, the side surface of the hidden plate 105 is not exposed to the outside. It is configured as follows.

Next, the case of moving the position of the movable power supply side terminal portion 102B will be described with reference to FIG. As an example, FIG. 8A shows a case where the bus L2 is connected to the fixed terminal 102A and the bus N is connected to the movable power supply side terminal 102B (that is, the supplied voltage is 100V). 8 (b) shows the case where the bus L2 is connected to the fixed terminal portion 102A and the bus L1 is connected to the movable power supply side terminal portion 102B (that is, the supplied voltage is 200V).

First, FIG. 8A shows the case where the bus L2 is connected to the fixed terminal portion 102A and the bus N is connected to the movable power supply side terminal portion 102B, so the voltage value supplied to the circuit breaker is 100V. The hidden plate 105 is located at the end opposite to the movable power supply side terminal 102B in the width direction of the body, and the voltage display portion 107 on the side where the movable power supply side terminal portion 102B is located has 100V characters on the outside. It is exposed and displayed.

Next, the circuit breaker is removed from the distribution board, and the movable power supply side terminal 102B is slid from the initial position of (a) to the other side surface of (b) in a state where the bus bar is not connected to the terminal. Then, the pinion starts to rotate counterclockwise in the drawing due to the meshing of the teeth of the rack 102B1 provided on the front side of the movable power supply side terminal 102B and the pinion 106. At the same time, a force is transmitted to the rack 105b provided on the back side of the hidden plate 105 meshing with the teeth of the pinion 106, and the movement starts in a direction opposite to the direction in which the movable power supply side terminal 102B is slid. Since the rack and pinion teeth have a one-to-one correspondence, the amount of movement of the hidden plate 105 and the amount of movement of the movable power supply side terminal portion 102B are the same, and the movable power supply side terminal 102B is moved to the other side surface side. When finished, the hidden plate 105 also finishes moving from the initial position to the other side surface.

In the state of FIG. 8B, the bus L2 is connected to the fixed terminal portion 102A, and the bus L1 is connected to the movable power supply side terminal portion 102B. Therefore, the voltage value supplied to the circuit breaker is 200V. On the front side where the movable power supply side terminal portion 102B is located, the voltage display portion 107 on the side where the movable power supply side terminal portion 102B is not located is concealed by the base of the hidden plate 105, and the movable power supply side terminal portion 102B is located. The voltage display 107 on the side appears. In this case, the voltage display unit 107 displays 200V characters.

Since the movable power supply side terminal portion 102B and the hidden plate 105 are interlocked with each other and the hidden plate 105 is moved in the direction opposite to the sliding direction of the movable power supply side terminal 102B, the operator can It is easy to accurately grasp the position of the movable power supply side terminal portion, and at one position where the movable power supply side terminal portion 102B is connected to the bus, the display of the voltage value supplied to the circuit breaker is always on the front side. Yes.
Since the voltage supplied to the circuit breaker at the other position is configured to be concealed by being located on the back side of the hidden plate 105, when the terminal portion is faced from the front side of the container body, The difference can be visually confirmed as the difference in voltage display provided on the front of the vessel, that is, the difference in terminal position. When the terminal device and the bus are selectively connected, the terminal device and the bus are connected. Even later, it is easy to directly grasp which circuit breaker is selected and which bus is connected. Since almost the entire surface of the terminal portion of the body that is not concealed by the concealment plate 105 can be used as the voltage display portion, the voltage display portion can be taken large and has good visibility, and the connection busbar or It is possible to provide a terminal structure for a circuit breaker that hardly causes misidentification of a supply voltage and has high wiring confirmation workability.

Note that the blade holder of the movable power supply side terminal portion and the main conductor inside the circuit breaker are connected by a stranded wire, so that there is an allowance for the amount of movement so as not to hinder continuous movement in the width direction. The length is given.

Further, the voltage display in the voltage display unit may be performed by color-coding at the substantially central portion in the width direction of the body, or by describing the type of busbar to be connected in addition to the display by characters. . In order to identify the power supply voltage, the color classification may be configured such that red and white, red and black have different hues, and lightness and saturation are different. Also, the bus types may be displayed as L1, N, or a combination of color coding and character display.

In addition, when the hidden plate 105 is moved along with the movement of the movable power source side terminal 102B, it is transmitted during operation that the movable power source side terminal 102B and the hidden plate 105 have reached predetermined positions. For the purpose of making the movable power supply side terminal 102B and the concealed plate 105 easily reach the positions, the protrusions 108a1, 108a2, which are moved over to the front side of the power supply side terminal portion 102B of the container and the back side of the concealed plate 105, respectively, 108b, 105c1, and 105c2 are provided. When the movable power supply side terminal 102B is moved in the width direction of the container, the protrusion on the back side of the hidden plate 105 that moves in conjunction with the protrusion on the front surface side of the container touches and gets over the movable power supply side terminal 102B. When moving from one position to the other, an appropriate click feeling can be obtained by overcoming the protrusion, and the operator can sensibly recognize that the movable power supply side terminal portion 102B has been switched. At the same time, the movable power supply side terminal 102B and the hidden plate 105 can easily reach a predetermined position.

Further, on the front side and the back side of the hidden plate 105, grooves 105d and 105e are provided in the width direction of the container. By providing the groove and partially reducing the thickness of the hidden plate, the hidden plate is elastically easily bent when the protrusions get over.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

Although the voltage display unit 107 described above is an example in which characters and colors are displayed, there is a possibility that the voltage display unit 107 may be installed in a dim place depending on the installation location of the distribution board where the circuit breaker is installed. For this reason, in view of the possibility that the positions of the voltage display unit and the second operation unit may be clearly unclear to the operator, the circuit breaker 1 has the inside of the body on the movable power supply side terminal unit 102B side. A light emitting means for obtaining power from a conductor and a conductor inside the container on the fixed terminal portion 102A side is arranged in the container, and the position of the voltage display section and the second operation section can be easily recognized by light emission of the light emitting means. You may comprise.

For example, as shown in FIG. 10, when the light emitting means 400 is arranged on the protrusion wall surface A arranged on the front side of the container, and the power supply side terminal side of the container is illuminated from the light emitting means 400. Good. Thereby, even in a dim place, the vicinity of the power display unit 107 is illuminated by the light emitting means 400, thereby improving visibility.

The light emitting means 400 obtains electric power from the conductor inside the container on the movable power supply side terminal portion 102B side and the conductor inside the container on the fixed terminal portion 102A side, so that the rectifier circuit and resistance connected to each conductor It is provided via a circuit. As the light emitting means, an LED, an EL panel, or the like may be used.

In addition, since the voltage supplied to the circuit breaker varies depending on the position of the movable power supply side terminal portion 102B, a constant current circuit is provided so that the light emitting means 400 is not destroyed due to a difference in supply voltage. The light emitting means may be configured to emit light.

Moreover, you may comprise so that LED which supplies an electric current according to the voltage provided with two or more light emission means according to the voltage supplied to a circuit breaker may be changed. By changing the light emission color of the LED, for example, a circuit may be provided so that a white LED emits light when the voltage is 100V and a red LED emits light when the voltage is 200V.

In addition, the voltage display unit 107 is configured to have transparency, and a light emitting means is provided on the back side of the voltage display unit 107 so that the front side is illuminated from the back side. It may be configured such that the color can be clearly seen from the front side.

For example, the voltage display unit 107 may be formed of a resin sheet having light permeability.

In FIG. 11, the figure at the time of arranging the circuit breaker of the 1st form in parallel is shown.
In any case, the type of bus connected to the circuit breaker and the supplied voltage can be clearly identified from the front side of the circuit breaker by the position of the movable power supply side terminal portion.
In this way, for each circuit breaker, in addition to easy identification of the type of bus to be connected and the magnitude of the supplied voltage, any circuit breaker can be used even when multiple circuit breakers are arranged in parallel. It is easy to directly grasp which bus is selected and connected to the circuit and what voltage is supplied to which circuit breaker.

The present invention can be applied to a normal circuit breaker provided in a distribution board, and can be applied to, for example, a three-pole circuit breaker in addition to a two-pole circuit breaker. In the case where a plurality of common terminal portions and movable power supply side terminal portions are provided, each movable power supply side terminal portion is moved in the width direction of the container in addition to the form in which each movable power supply side terminal portion is moved in the width direction of the container. The moving direction may be formed so that the movable power supply side terminal portion can move in an oblique direction so as to be displaced from the front side to the back side of the body.

DESCRIPTION OF SYMBOLS 1 Circuit breaker 101a Case 101a10 Wall part 101b Case 101b10 Wall part 101b3 Opening part 101c Groove part 101d Bearing part 101e Columnar member receiving part 101f Projection part 101g Bearing part 101h Groove part 101i Hole part 102 Power supply side terminal part 102A Fixed terminal part 102A1 Conductor 102B Movable power supply side terminal portion 102B1 Rack 102B2 Rib 102B3 Blade receiver 102B5 Bearing portion 103 Load side terminal portion 104 Handle 105 Hidden plate 105b Rack 105b1 Rib 105c Projection portion 105d Groove portion 105e Groove portion 106 Pinion 106a Shaft 107 Voltage display portion 108a Projection portion

Claims (1)

A circuit breaker terminal structure installed on a distribution board and connected to the bus,
In the body of the circuit breaker,
Movable to select and connect a predetermined bus among the buses of each phase of the distribution board where the connection position with the bus is variable for one of the power supply side terminals that receive electricity from the bus of the distribution board A power supply side terminal;
A voltage display unit that displays in advance a plurality of power supply voltages that can be applied in the distribution board by connecting the busbar and the power supply side terminal;
Engaged with an interlocking member that is interlocked with the movable power supply side terminal, and in connection with the movement of the connection position of the movable power supply side terminal, when the predetermined bus and the movable power supply side terminal are connected in the voltage display unit. A hidden plate that hides the display of the power supply voltage that is not actually applied,
When the parallel direction of circuit breakers is the width direction of the body,
The hidden plate is located at the other end in the width direction when the movable power supply side terminal is located at one end in the width direction,
When the movable power supply side terminal is located at the other end in the width direction, it is located at one end in the width direction,
A terminal structure of a circuit breaker, wherein a display of a voltage actually applied to the circuit breaker from a predetermined bus in the voltage display section is exposed so as to be visible from the outside.

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