JP7195235B2 - Quick connect terminal units and circuit breakers - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick-connect terminal unit that is detachably attached to a main body of a circuit breaker and a circuit breaker.

A load attached to a circuit breaker often has a ground wire. Also, the grounding wire of the load device is often bundled and covered with other wires. When the ground wire is bundled and covered with other wires, it is troublesome to extend and connect only the ground wire away from the circuit breaker. Therefore, Patent Document 1 discloses a circuit breaker having a quick-connecting terminal to which a grounding wire of a load device is connected, and in which the grounding wire of the load device is connected to a grounding terminal provided on a switchboard via the quick-connecting terminal. is proposed. This allows the ground wire to be grounded via the circuit breaker. In addition, since the grounding wire of the load device is connected to the quick connection terminal, it is easy to connect the grounding wire to the circuit breaker.

JP 2016-127791 A

However, in the circuit breaker described in Patent Document 1, since the quick connection terminal is connected to the ground terminal of the switchboard, the grounding destination is limited to the ground terminal of the switchboard, leaving no room for selection. If more than one type of circuit breaker is placed in the switchboard, it may be required to separate the ground system. For example, in Extension Regulations 1350-13 "Restrictions on Common Grounding Wires and Electrodes" issued by the Japan Electric Association, "Equipment installed on electric circuits protected by earth leakage circuit breakers and unprotected electric circuits Do not share the grounding wire and grounding electrode such as, etc. However, this does not apply when using a grounding electrode with a low resistance of 2Ω or less.” For this reason, for example, when a grounding electrode with a low resistance of 2Ω or more is used in a switchboard where an earth leakage circuit breaker and a circuit breaker for wiring are mixed, the grounding of the earth leakage circuit breaker and the circuit breaker for wiring must be separated from each other. Systematization is necessary.

In the technique described in Patent Document 1, the grounding destination is limited to the ground terminal of the switchboard. The ground system cannot be separated. Therefore, when using a grounding electrode with a low resistance of 2Ω or less, there is a possibility that an abnormal operation or the like may occur in the load device due to the wiring circuit breaker and earth leakage circuit breaker being in the same grounding system.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a quick-connect terminal unit that has a quick-connect terminal to be connected to a ground wire and that can increase the degree of freedom in grounding.

In order to solve the above-described problems and achieve the object, a quick-connect terminal unit of the present invention is a quick-connect terminal unit detachably attached to a load side of a main body of a circuit breaker. A connection terminal portion and a second quick connection terminal portion are provided. The first quick-connect terminal section has a quick-connect terminal connected to one of a plurality of power supply wires connected to the load device. The second quick-connect terminal portion is electrically connected to the quick-connect terminal connected to the grounding wire connected to the load device, the quick-connecting terminal connected to the grounding wire, and engaged with the grounding conductor. It has an electrically conductive ground connection member that can be formed. The second quick-connect terminal portion has a plurality of spaces in which the grounding connection member can be arranged, and the grounding connection member is arranged in one of the plurality of spaces, thereby providing a plurality of grounding connections according to the load device. One of the wires was made selectable .

ADVANTAGE OF THE INVENTION According to this invention, it is effective in the flexibility of grounding being able to be improved, having a quick connection terminal connected to a ground wire.

FIG. 1 is a perspective view showing the appearance of a circuit breaker with a quick-connect terminal unit attached to a main body according to Embodiment 1 of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows a part of circuit breaker concerning Embodiment 1 in a cross section A plan view of the circuit breaker according to the first embodiment FIG. 2 is a perspective view showing the appearance of the circuit breaker with the quick-connect terminal unit removed from the main body according to the first embodiment; FIG. 3 is a cross-sectional view of the circuit breaker in which the electric wire and the grounding conductor are inserted into the quick-connect terminal unit according to the first embodiment, taken along line V-V shown in FIG. FIG. 2 is an external perspective view of a conductive member included in the quick-connect terminal unit according to the first embodiment; FIG. 2 is a perspective view showing an appearance of an elastic member included in the quick-connect terminal unit according to the first embodiment; FIG. 2 is a perspective view showing an appearance of a latch included in the quick-connect terminal unit according to the first embodiment; FIG. 2 is an exploded perspective view showing the appearance of members constituting the casing of the quick-connect terminal unit according to the first embodiment; FIG. 2 is a perspective view showing the appearance of a connection display button included in the quick-connect terminal unit according to the first embodiment; FIG. 2 is a perspective view showing the appearance of a wiring breaker and an earth leakage breaker installed in parallel as the circuit breaker according to the first embodiment; BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows a part of earth-leakage circuit breaker concerning Embodiment 1 in a cross section BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows a part of circuit breaker for wiring concerning Embodiment 1 in a cross section FIG. 13 is a perspective view showing the external appearance of a state in which the ground fault circuit breaker shown in FIG. 12 and the circuit breaker for wiring shown in FIG. 13 are installed in parallel.

BEST MODE FOR CARRYING OUT THE INVENTION A quick-connect terminal unit and a circuit breaker according to embodiments of the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

Embodiment 1.
FIG. 1 is a perspective view showing the appearance of a circuit breaker with a quick-connect terminal unit attached to a main body according to a first embodiment of the present invention. FIG. 2 is a side view showing a cross section of part of the circuit breaker according to the first embodiment.

A circuit breaker 100 shown in FIG. 1 is connected to an electric line between a power source (not shown) and a load device (not shown). The circuit breaker 100 is a wiring breaker that opens an electric circuit from a closed state when an overcurrent or short-circuit current flows in the connected electric circuit, or a circuit breaker that causes an overcurrent, short-circuit current, or leakage current in the connected electric circuit. A ground fault circuit breaker that opens an electric circuit from a closed state when a current flows. Although the circuit breaker 100 is described here as a two-pole circuit breaker, the circuit breaker 100 may be a one-pole circuit breaker or a three-pole circuit breaker. good too. Moreover, the circuit breaker 100 is not limited to devices such as a circuit breaker for wiring and an earth leakage breaker, and may be simply referred to as a switch that opens and closes an electric circuit.

The circuit breaker 100 includes a box-shaped main body 1 having a handle 9 and a quick-connect terminal unit 2 detachably attached to the main body 1 . The main body 1 has an opening/closing mechanism for switching between an open state and a closed state of the electric circuit, and acts on the opening/closing mechanism when an overcurrent or a short-circuit current flows in the electric circuit to cause the opening/closing mechanism to open the electric circuit from the closed state. It has a tripping mechanism, an electrode connected to an electric circuit, and the like.

The circuit breaker 100 has an operating surface 15 from which a handle 9 that interlocks with an opening/closing mechanism protrudes, and a back surface 16 on the opposite side of the operating surface 15 . The circuit breaker 100 is installed on a vertical plane inside a switchboard (not shown) with the rear surface 16 serving as the installation plane. Since the vertical plane inside the switchboard is a plane parallel to the vertical direction, when the circuit breaker 100 is installed on the vertical plane inside the switchboard, the longitudinal direction of the circuit breaker 100 is the vertical direction. Hereinafter, the direction along the operation surface 15 and the facing direction between the main body 1 and the quick-connect terminal unit 2 is referred to as the "longitudinal direction". A direction along the operation surface 15 and perpendicular to the longitudinal direction is referred to as a "width direction", and a direction perpendicular to the operation surface 15 is referred to as a "thickness direction". 1 and 2, XYZ-axis coordinates are shown with the longitudinal direction as the Z-axis direction, the width direction as the X-axis direction, and the thickness direction as the Y-axis direction. One longitudinal end 10a of the main body 1 is connected to a power supply, and the other longitudinal end 10b is connected to a load device via a quick-connect terminal unit 2. As shown in FIG. Hereinafter, the end portion 10a of the main body portion 1 may be referred to as the power source side end portion 10a, and the end portion 10b of the main body portion 1 may be referred to as the load side end portion 10b.

The body portion 1 includes three power terminals 6 each formed of a conductive member. These three power supply terminals 6 are arranged side by side in the thickness direction at the end 10a of the main body 1 on the power supply side. A metal bar (not shown) is fitted into each power terminal 6 by being slid in the Z-axis direction, which is the longitudinal direction. Each power supply terminal 6 is not limited to a connection terminal in which a metal bar is fitted, and may be a connection terminal in which an electric wire is connected by screwing. The metal bar or electric wire connected to the power supply terminal 6 is a power supply side conductor electrically connected to the power supply.

The quick-connection terminal unit 2 includes a plurality of quick-connection terminal portions 3A, 3B, and 3C each having a quick-connection terminal 30 connected to a load-side electric wire. The load-side electric wire is an electric wire connected to a load device (not shown). The quick-connect terminal portions 3A and 3B are examples of a first quick-connect terminal portion, and the quick-connect terminal portion 3C is an example of a second quick-connect terminal portion. Hereinafter, when each of the plurality of quick-connecting terminal portions 3A, 3B, and 3C is indicated without distinguishing them individually, they may be referred to as quick-connecting terminal portions 3 in some cases. Three load-side electric wires are connected to the quick-connect terminal unit 2 . Of these three load-side wires, two load-side wires are power supply wires that are load-side wires for power supply, and the remaining one load-side wire is a ground wire that is a load-side wire for grounding.

The quick-connection terminals 30 of the quick-connection terminal portions 3A and 3B function as load-side voltage terminals that are electrically connected to the corresponding one of the two power supply lines. The quick-connect terminal 30 of the quick-connect terminal portion 3C functions as a load-side ground terminal electrically connected to the ground wire.

As shown in FIG. 1, the two quick-connect terminal portions 3A and 3B are formed side by side in the width direction, and when the quick-connect terminal unit 2 is attached to the main body portion 1, the end portion of the body portion 1 on the load side is formed. 10b. Moreover, the quick-connect terminal portion 3C is formed at a position protruding from the quick-connect terminal portion 3A in the longitudinal direction of the circuit breaker 100, and when the quick-connect terminal unit 2 is attached to the main body portion 1, is formed at a position farther from the body portion 1 than the quick-connecting terminal portions 3A and 3B.

As shown in FIG. 2, the quick-connect terminal 30 of the quick-connect terminal portion 3 has an insertion hole 31 into which an electric wire (not shown) is inserted, and a conductive member 32 electrically connected to the electric wire inserted from the insertion hole 31. and a holding portion 33 that holds an electric wire electrically connected to the conductive member 32 . The quick-connect terminal 30 also includes a releasing portion 34 that releases the state in which the wire is held by the holding portion 33 when mechanically operated. In the quick-connect terminal 30 , the electric wire is electrically connected to the conductive member 32 by inserting the electric wire through the insertion hole 31 , and the electric wire electrically connected to the conductive member 32 is held by the holding portion 33 . .

The conductive members 32 of the quick-connect terminal portions 3A and 3B are electrically connected to the electrodes of the main body portion 1 when the quick-connect terminal unit 2 is attached to the main body portion 1 . Therefore, when the quick-connect terminal unit 2 is attached to the main body 1 and the power supply line is attached to the quick-connect terminal parts 3A and 3B, the power supply line is electrically connected to the electrode of the main body 1 through the conductive member 32. connected

The quick-connect terminal portion 3C has a plurality of connection members 35 formed to be engageable with a grounding conductor (not shown), one end connected to the plurality of connection members 35, and the other end connected to the conductive member 32. and an electrically conductive connecting member 71 . The quick-connect terminal portion 3</b>C has a plurality of spaces 42 in which connection members 35 can be arranged, and each of the plurality of connection members 35 is arranged in a corresponding one of the plurality of spaces 42 . The connection member 35 is formed by a conductive member. The plurality of connecting members 35 are arranged side by side in the thickness direction and electrically connected to the conductive member 32 by connecting members 71 . The grounding wire connected to the quick-connect terminal portion 3C is connected to the grounding conductor inserted into the connecting member 35 via the conductive member 32, the connecting member 71, and the connecting member 35. As shown in FIG.

Thus, the quick-connect terminal portion 3C of the quick-connect terminal unit 2 has the quick-connect terminal 30 connected to the ground wire and the connection member 35 electrically connected to the ground conductor. Therefore, when the quick-connect terminal unit 2 is used, the load device can be grounded simply by inserting the grounding conductor into the connection member 35, so that the working efficiency of the grounding operation can be improved.

In addition, since the quick-connect terminal unit 2 has a plurality of connection members 35 formed to be engageable with the grounding conductors, even if there are a plurality of grounding conductors of different systems, grounding of the systems can be performed. can be selected and grounded. Therefore, in the quick-connect terminal unit 2, for example, even if a circuit breaker for wiring and an earth leakage circuit breaker coexist in a switchboard, the grounding system for the circuit breaker for wiring and the earth leakage circuit breaker can be separated and grounded.

The configuration of the circuit breaker 100 will be described in more detail below. 3 is a plan view of the circuit breaker according to Embodiment 1. FIG. 4 is a perspective view showing the appearance of the circuit breaker according to the first embodiment with the quick-connect terminal unit removed from the main body. FIG. 5 is a cross-sectional view of the circuit breaker in which the electric wire and the grounding conductor are inserted into the quick-connect terminal unit according to the first embodiment, taken along the line V-V shown in FIG. 3. FIG.

As shown in FIG. 4 , the main body 1 includes a housing 10 having a base 11 and covers 12 and 13 . The base 11 and the covers 12 and 13 are each made of insulating resin and are separable from each other in the width direction of the circuit breaker 100 . Inside the housing 10, the above-described opening/closing mechanism, tripping mechanism, electrodes, and the like are arranged. The electrodes arranged inside the housing 10 include, for example, a power supply side electrode to which a power supply side wire is electrically connected, and a load side electrode to which a load side wire is electrically connected.

The handle 9 of the main body 1 is arranged on the operation surface 15 side as described above and protrudes from the opening 15 a formed in the operation surface 15 . The mechanical operation of the handle 9 activates the opening/closing mechanism to switch the electric circuit between the open state and the closed state. A load-side exhaust port 14 is formed at the load-side end portion 10b of the body portion 1, and the gas generated inside the body portion 1 is discharged to the outside through the load-side exhaust port 14.

The body portion 1 also has a fastening member that mechanically fixes the quick-connect terminal unit 2 to the body portion 1 and that is electrically connected to the quick-connect terminals 30 of the quick-connect terminal portions 3A and 3B in the quick-connect terminal unit 2. A member 7, 8 is provided. The fastening members 7 and 8 are arranged side by side in the width direction at the load-side end portion 10b of the main body portion 1 . The fastening members 7 and 8 are examples of mounting portions for detachably mounting the quick-connect terminal unit 2 to the main body portion 1 . The fastening member 7 includes a screw terminal 7a and a screw 7b. Similarly, the fastening member 8 includes a screw terminal 8a and a screw 8b. The conductive member 32 of the quick-connect terminal portion 3A is fastened to the screw terminal 7a by the screw 7b, and the conductive member 32 of the quick-connect terminal portion 3B is fastened to the screw terminal 8a by the screw 8b.

Further, as shown in FIG. 4, a contact signal output lead wire 5 is led out from the end portion 10b of the main body portion 1 on the load side. The contact signal output lead wire 5 is wired from the main body 1 to other devices in the switchboard. In order to avoid interference with the contact signal output lead wire 5, the end portion 10b on the load side of the main body portion 1 has a step at the central portion in the width direction in FIG. is also arranged at a position close to the operation surface 15 .

As shown in FIG. 4 , the quick-connect terminal unit 2 includes a cover portion 4 that covers the fastening members 7 and 8 from the operation surface 15 side. The cover portion 4 has through holes 4a and 4b extending in the thickness direction, and a tool such as a screwdriver is inserted into the through holes 4a and 4b and rotated to attach and detach the screws 7b and 8b. It can be carried out.

The quick-connect terminal unit 2 includes a housing 20 that stores the quick-connect terminals 30 of the three quick-connect terminal portions 3A, 3B, and 3C in a divided manner. The housing 20 has a base 21 and covers 22 and 23 . The base 21 and the covers 22 and 23 are each made of insulating resin and are separable from each other in the width direction of the circuit breaker 100 .

As shown in FIG. 5, the housing 20 has a plurality of storage spaces 24 for storing different quick-connect terminals 30 among the quick-connect terminals 30 of the three quick-connect terminal portions 3A, 3B, and 3C. . In the example shown in FIG. 5, the storage space 24 for storing the quick-connect terminal 30 of the quick-connect terminal portion 3B is hidden behind the quick-connect terminal portion 3A and cannot be seen.

In the housing 20, the above-described insertion hole 31 into which the power supply line 80 or the ground line 81 is inserted, and a display hole 65 through which the connection display button 40 described later of the release portion 34 can slide are formed for each storage space 24. be. In each storage space 24, the above-described conductive member 32, holding portion 33, and releasing portion 34 are arranged. The holding portion 33 has an elastic member 36 , a latch 37 and a latch spring 38 . The release unit 34 includes a connection display button 40 and a connection display spring 41 . Although the insertion hole 31 is a circular hole in the example shown in FIGS. 1 and 2, it may be a square hole or a hole of another shape as long as the power supply line 80 or the ground line 81 can be inserted therein.

Here, the configuration of the conductive member 32 will be described. 6 is an external perspective view of a conductive member included in the quick-connect terminal unit according to the first embodiment; FIG. As shown in FIG. 6 , the conductive member 32 is continuous with a support portion 32a that supports the elastic member 36 of the holding portion 33 and one end of the support portion 32a, and is fastened to the main body portion 1 by a fastening member 7 or a fastening member 8. and a terminal portion 32b. The terminal portion 32b has a U-shaped notch at the tip, and the screw 7b or the screw 8b is inserted into the notched portion. As shown in FIG. 5, the terminal portion 32b is arranged in the storage space 24 with the tip protruding from the housing 20 to the outside.

In addition, the conductive member 32 includes a contact portion 32c that contacts an electric wire inserted from the insertion hole 31, as shown in FIG. The contact portion 32 c has a wire contact surface 51 and a wire guide surface 52 . As shown in FIG. 5, the wire contact surface 51 is contacted by the tip portion 80a of the feeder wire 80 or the tip portion 81a of the ground wire 81 inserted from the insertion hole 31 . The wire guide surface 52 is formed in a curved surface shape, and guides the tip 80 a of the inserted feeder wire 80 or the tip 81 a of the ground wire 81 toward the wire contact surface 51 .

A conductive member 32 having a shape shown in FIG. 6 is used for the quick-connect terminal 30 of the quick-connect terminal portion 3A. The conductive member 32 used for the quick-connect terminal 30 of the quick-connect terminal portion 3B is aligned with the height of the fastening member 8, and the position of the terminal portion 32b is positioned on the operation surface 15 side in the thickness direction, as shown in FIG. The shape is different from that of the conductive member 32 . Further, since the quick-connect terminal 30 of the quick-connect terminal portion 3C is not electrically connected to the body portion 1, the U-shaped notch shown in FIG. Therefore, a conductive member 32 having the same shape as the quick-connect terminal 30 of the quick-connect terminal portion 3B is used. The contact portion 32c of the conductive member 32 of the quick-connect terminal portion 3C may be configured without the U-shaped notch.

Next, the configuration of the elastic member 36 forming the holding portion 33 will be described. 7 is a perspective view showing an appearance of an elastic member included in the quick-connect terminal unit according to the first embodiment; FIG. As shown in FIG. 7, the elastic member 36 includes a supported portion 36a supported by the support portion 32a of the conductive member 32, a contact pressure spring portion 36b continuing to one end of the supported portion 36a, and a supported portion 36a. It has a locking spring portion 36c that continues to the other end.

The contact pressure spring portion 36b has a tip facing the wire contact surface 51 of the conductive member 32 shown in FIG. The tip of the locking spring portion 36c faces the wire contact surface 51 of the conductive member 32 shown in FIG. It regulates the movement of 80 in the removal direction. The contact pressure spring portion 36b is an example of a first spring portion, and the locking spring portion 36c is an example of a second spring portion.

Next, the configuration of the latch 37 that constitutes the holding portion 33 will be described. 8 is a perspective view showing an appearance of a latch included in the quick-connect terminal unit according to the first embodiment; FIG. FIG. 9 is an exploded perspective view showing the appearance of members forming the housing of the quick-connect terminal unit according to the first embodiment. As shown in FIG. 8, the latch 37 of the holding portion 33 is formed at the middle portion in the extension direction and is formed at a supported portion 37a that is rotatably supported by the housing 20, and at one end portion in the extension direction. It has a wire receiving portion 37b for receiving the tip portion 80a of the feeder wire 80 or the tip portion 81a of the ground wire 81 inserted from the hole 31 . Also, the latch 37 has a latch portion 37c formed at the other end portion in the extension direction and engaged with the connection display button 40 .

The supported portion 37a is rotatably attached to a pin 62 formed on the base 21 or the cover 23 shown in FIG. The latch 37 rotates clockwise in FIG. 5 when the wire receiving portion 37b receives the tip portion 80a of the feeder wire 80 or the tip portion 81a of the ground wire 81, and the latch portion 37c rotates clockwise in FIG. .

As shown in FIG. 5, the holding portion 33 has a latch spring 38. As shown in FIG. Latch spring 38 is rotatably attached to pin 63 formed in base 21 or cover 23 shown in FIG. The latch 37 is urged by the latch spring 38 in the direction in which the latch portion 37 c engages with the connection indicating button 40 .

Next, the configuration of the connection display button 40 that constitutes the release unit 34 will be described. 10 is a perspective view showing an appearance of a connection display button included in the quick-connect terminal unit according to the first embodiment; FIG. As shown in FIG. 10, the connection display button 40 includes an operating portion 40a, a pushing portion 40b that pushes the contact pressure spring portion 36b of the elastic member 36 when the operating portion 40a is mechanically operated, and a latch of the latch 37. It has a latch engaging portion 40c that engages with the portion 37c. The connection display button 40 is inserted into the display hole 65 as shown in FIG.

Next, the operation of the quick-connect terminal unit 2 in the circuit breaker 100 will be described with reference to FIG. First, the operation when the grounding conductor 90 is inserted into the connection member 35 will be described, and then the operation when the grounding conductor 90 is inserted into the feeder line 80 will be described. In the following, the operation when the power supply line 80 is inserted into the quick-connect terminal 30 will be described. is the same as

The quick-connect terminal unit 2 has two connection members 35 that engage and are electrically connected to the corresponding ground conductors of the ground conductors 91 and 92. The two connection members 35 are shown in FIG. 5, they are arranged in the thickness direction. In the example shown in FIG. 5, one connection member 35 of the two connection members 35 is connected to the grounding conductor 91, and the remaining connection member 35 is connected to the grounding conductor 92. In the example shown in FIG. In the following description, the grounding conductors 91 and 92 are referred to as the grounding conductor 90 when they are indicated without distinguishing between them. Although the ground conductor 90 is connected to each of the two connection members 35 in FIG. 5 , the ground conductor 90 can be selectively connected to one of the two connection members 35 .

Further, the circuit breaker 100 may have a configuration in which the connection member 35 is arranged only in one of the two spaces 42 . In this case, the space 42 in which the connection member 35 is arranged differs for each type of circuit breaker 100 . For example, if the circuit breaker 100 is a wiring breaker, only one of the two connection members 35 is arranged in one of the two spaces 42 in the circuit breaker 100 . When the circuit breaker 100 is an earth leakage breaker, only the other of the two connecting members 35 is arranged in the other of the two spaces 42 in the circuit breaker 100 . This makes it possible to easily connect different grounding conductors 90 between the circuit breaker for wiring and the earth leakage circuit breaker.

Each connecting member 35 includes a flat base portion 35a and a pair of spring portions 35b extending in the same direction from one end and the other end of the base portion 35a and facing each other. The pair of spring portions 35b extend toward the distal end in a direction toward each other, then fold back and extend toward the distal end in a direction away from each other. . The grounding conductor 90 is urged by the elastic member 39 in a direction in which the contact portions 35c of the pair of spring portions 35b approach each other.

When the ground conductor 90 is inserted into the connection member 35 , the ground conductor 90 is inserted until it hits the base portion 35 a of the connection member 35 . Thus, the base 35a functions as a stopper. When the grounding conductor 90 is inserted until it contacts the base portion 35a, the connecting member 35 and the elastic member 39 are combined to hold the grounding conductor 90 between the pair of contact portions 35c that are biased toward each other by the elastic member 39. be done. By sandwiching the grounding conductor 90 between the connecting members 35 , the grounding conductor 90 is prevented from being removed from the connecting member 35 . Further, the connecting member 35 is configured so that the contact portion 35 c bites into the grounding conductor 90 , thereby further preventing the grounding conductor 90 from being removed from the connecting member 35 .

The connection member 35 is electrically connected to one end of the connection member 71, and the other end of the connection member 71 is electrically connected to the conductive member 32 of the quick-connect terminal 30 in the quick-connect terminal portion 3C. Therefore, the grounding conductor 90 is electrically connected to the conductive member 32 of the quick-connect terminal 30 in the quick-connect terminal portion 3C.

Further, when the power supply line 80 with the front end portion 80a exposed by removing the coating of the front end portion is inserted through the insertion hole 31, the front end 80a of the power supply line 80 does not touch the base 21 or the cover 23 of the housing 20. It is inserted until it contacts the formed wire stop portion 61 . When the tip portion 80a of the power supply line 80 is inserted until it contacts the wire stopper portion 61, the tip portion of the locking spring portion 36c shown in FIG. Therefore, the tip portion 80 a of the power supply line 80 is locked to the quick-connection terminal 30 , and the power supply line 80 is prevented from being removed from the quick-connection terminal 30 .

Further, in a state in which the tip portion 80a of the feeder wire 80 is inserted until it contacts the wire stopper portion 61, the tip portion 80a of the feeder wire 80 is moved to a position facing the contact pressure spring portion 36b by the spring force of the contact pressure spring portion 36b. is pressed against the wire contact surface 51 of the conductive member 32 located at the . By inserting the distal end portion 80a of the power supply line 80 into the insertion hole 31 in this manner, the distal end portion 80a of the power supply line 80 is electrically connected to the conductive member 32, and the distal end portion 80a of the power supply line 80 is It is held in a state of being electrically connected to the conductive member 32 .

When the distal end portion 80a of the feeder wire 80 is pressed against the contact pressure spring portion 36b, the wire receiving portion 37b of the latch 37 is pressed by the distal end portion 80a of the feeder wire 80, so that the wire receiving portion 37b of the latch 37 functions as a latch shaft as shown in FIG. The latch 37 rotates clockwise in FIG. 5 around the pin 62 . When the latch 37 rotates clockwise in FIG. 5, the engagement between the latch portion 37c of the latch 37 shown in FIG. 8 and the latch engaging portion 40c of the connection display button 40 shown in FIG. 10 is released. As a result, the operating portion 40 a of the connection display button 40 is moved to the locking portion 64 formed on the housing 20 by the biasing force of the connection display spring 41 . Depending on the position of the operation part 40a in the thickness direction, it is possible to indicate that the tip 80a of the feeder 80 is connected to the quick-connect terminal 30, that is, that the tip 80a of the feeder 80 is connected. .

When the tip portion 80a of the power supply line 80 is in a connected state, the push-in portion 40b of the connection display button 40 pushes the locking spring portion 36c to the tip portion 80a of the power supply line 80 by pushing the connection display button 40 with a tool or the like. push away from the As a result, the locking spring portion 36 c is separated from the feeder line 80 , so that the feeder line 80 can be removed from the quick-connect terminal 30 . When the power supply line 80 is removed from the quick-connect terminal 30 , the wire receiving portion 37 b of the latch 37 is no longer pressed by the tip 80 a of the power supply line 80 . Therefore, the biasing force of the latch spring 38 to the latch 37 rotates the latch 37 counterclockwise in FIG. 5, and the wire receiving portion 37b of the latch 37 returns to the position before the wire connection. Therefore, when the connection display button 40 is released, the latch engagement portion 40c of the connection display button 40 engages with the latch portion 37c of the latch 37, returning to the original position before the wire connection.

As described above, in the quick-connect terminal 30 , the holding portion 33 is held by the combination of the elastic member 36 and the latch 37 to hold the power supply line 80 or the grounding line 81 while the power supply line 80 or the grounding line 81 is electrically connected to the conductive member 32 . A holding mechanism for holding 81 is constructed. In the quick-connect terminal 30 , the release portion 34 constitutes a release mechanism that releases the holding of the power supply line 80 or the ground line 81 by the latch 37 by mechanically operating the connection display button 40 .

The storage space 24 in the quick-connect terminal portions 3A, 3B, and 3C requires a space for inserting the power supply line 80 or the ground line 81 in addition to the space in which the quick-connect terminal 30 is arranged. Therefore, there is a limit to reducing the size of the storage space 24 for the quick-connect terminal portions 3A, 3B, and 3C. A plurality of circuit breakers 100 are arranged in the switchboard, and it is assumed that these plurality of circuit breakers 100 are arranged in close contact with each other in the width direction. Therefore, it is difficult to wire the feeder line 80 and the ground line 81 from the side surface of the circuit breaker 100 facing the adjacent circuit breaker 100 .

Therefore, the quick-connecting terminal portions 3A, 3B, and 3C are formed in a box shape in which the length in the thickness direction and the length in the longitudinal direction are longer than the length in the width direction. Moreover, the quick-connect terminal portions 3A, 3B, and 3C are configured so as not to overlap each other when the circuit breaker 100 is viewed from the operation surface 15 side, that is, in plan view, as shown in FIG. The quick-connect terminal portions 3A, 3B, and 3C are configured so that the regions facing the plane 85 including the operation surface 15 in the thickness direction can be used for access and display. Specifically, the quick-connect terminal portions 3A, 3B, and 3C have the operation portion 40a of the connection display button 40 exposed in the thickness direction from the surface closer to the main body portion 1, and the thickness of the surface farther from the main body portion 1. An insertion hole 31 is positioned in the middle portion of the direction. The access means the operation of inserting the power supply line 80 or the grounding line 81 into the quick connection terminal 30 or the operation of the connection display button 40, and the display indicates that the power supply line 80 is connected. is a display by the connection display button 40 of . The display by the connection display button 40 is indicated by the position of the operation portion 40a in the thickness direction.

The quick-connect terminal portion 3C is arranged at a position farther from the plane 85 including the operation surface 15 shown in FIG. 2 than the quick-connect terminal portion 3A in the thickness direction. Thereby, in the thickness direction, the insertion hole 31 of the quick-connect terminal portion 3C can be positioned farther from the plane 85 including the operation surface 15 than the insertion hole 31 of the quick-connect terminal portion 3A. Moreover, as shown in FIG. 5, the insertion hole 31 is opened obliquely with respect to the longitudinal direction. Therefore, as shown in FIG. 5, the ground wire 81 can be inserted into the quick-connect terminal portion 3C at an angle with respect to the thickness direction. Therefore, it is possible to prevent the ground wire 81 from interfering with the worker's flow line when inserting the power supply line 80 into the quick-connect terminal portion 3A and when operating the connection display button 40 of the quick-connect terminal portion 3A. This makes it possible to easily insert the power supply line 80 into the quick-connection terminal portion 3A and operate the connection display button 40 of the quick-connection terminal portion 3A.

The position of the quick-connect terminal portion 3C in the thickness direction is in line with the operator's flow line when the quick-connect terminal portion 3C is inserted into the ground wire 81 and when the connection display button 40 of the quick-connect terminal portion 3C is operated. It is set so as to avoid interference with the feed line 80 . This facilitates insertion of the quick-connect terminal portion 3C into the ground wire 81 and operation of the connection display button 40 of the quick-connect terminal portion 3C.

Further, the quick-connect terminal portions 3A and 3B into which the power supply line 80 is inserted are arranged side by side in the width direction in the same manner as other circuit breakers in order to prevent erroneous wiring. In addition, as described above, it is assumed that a plurality of circuit breakers 100 are arranged side by side in the switchboard. A narrower width is desirable. Therefore, in the quick-connect terminal unit 2, the quick-connect terminal portion 3C is not arranged side by side with the quick-connect terminal portions 3A and 3B in the width direction, but is arranged side by side with the quick-connect terminal portion 3A in the longitudinal direction. As a result, the quick-connect terminal unit 2 can prevent the width of the circuit breaker 100 from increasing while providing the quick-connect terminal portion 3C into which the ground wire 81 is inserted.

Further, the quick-connect terminal portion 3C is arranged at a position farther from the plane 85 including the operation surface 15 in the thickness direction than the quick-connect terminal portion 3A. Therefore, when the main body 1 is attached to the quick-connect terminal unit 2, as shown in FIG. 2, a space 70 is formed between the load-side end 10b of the main body 1 and the quick-connect terminal 3C. be. It can also be said that the circuit breaker 100 is formed in an arch shape so as to straddle the space 70 by the body portion 1 and the quick-connect terminal unit 2 . Therefore, the contact signal output lead wire 5 can be easily pulled out of the circuit breaker 100 from the space 70 .

Further, the space 70 is formed between the load-side end portion 10b of the body portion 1 and the quick-connection terminal portion 3C, so that the load-side exhaust port 14 formed in the body portion 1 is not closed, and the quick-connection is performed. A terminal unit 2 can be attached to the body portion 1 . Further, when mounting claws (not shown) formed on the quick-connecting terminal unit 2 for mounting the quick-connecting terminal unit 2 to the body portion 1 are arranged on the rear surface 16 side of the quick-connecting terminal portions 3A and 3B, the mounting claws can be easily accessed. In the circuit breaker 100, the mounting claws can be easily accessed, and the position of the quick-connecting terminal portion 3 in the longitudinal direction can be freely set, so that the degree of freedom in design can be improved. For example, by extending the position of each quick-connect terminal portion 3 further in the longitudinal direction, it is possible to secure a space on the main body portion 1 side, so it is also possible to have a structure that requires space, such as an ultra-current-limiting unit or a two-point breaker. .

The quick-connect terminal portion 3C is formed at a position farther from the body portion 1 than the quick-connect terminal portion 3A in the longitudinal direction of the circuit breaker 100 and at a position protruding from the quick-connect terminal portion 3A. That is, the quick-connect terminal portion 3A and the quick-connect terminal portion 3C are arranged side by side in the longitudinal direction, and the longitudinal space outside the quick-connect terminal portion 3B is a free space. As shown in FIG. 4, the contact signal output lead wire 5 is pulled out from the body portion 1 at a position closer to the quick-connect terminal portion 3B in the width direction of the circuit breaker 100. As shown in FIG. Therefore, compared to the case where the contact signal output lead wire 5 is pulled out from a position closer to the quick connection terminal portions 3A and 3C in the width direction of the circuit breaker 100 in the main body portion 1, the contact signal output lead wire 5 can be placed inside the switchboard. can be easily routed to other devices in

In the quick-connect terminal portion 3C shown in FIG. 5, the terminal portion 32b of the conductive member 32 electrically connected to the connection member 35 is pulled out from the side surface 17 of the quick-connect terminal unit 2, but the circuit breaker 100 is , the terminal portion 32b may be arranged in the housing 20. FIG.

FIG. 11 is a perspective view showing the appearance of a circuit breaker according to the first embodiment in which a circuit breaker for wiring and an earth leakage breaker are installed in parallel. In the example shown in FIG. 11, three ground fault circuit breakers 100A and one circuit breaker 100B are closely arranged in the width direction. The earth leakage breaker 100A opens the electric circuit from the closed state when an overcurrent, short-circuit current, or leakage current flows in the connected electric circuit. The circuit breaker 100B for wiring opens an electric circuit from a closed state when an overcurrent or a short-circuit current flows in the connected electric circuit. The earth leakage breaker 100A and the circuit breaker 100B have the same configuration as the circuit breaker 100 described above, except that the internal configuration of the main body 1 is different.

As shown in FIG. 11, the connection member 35 of the earth leakage circuit breaker 100A is connected to the grounding conductor 91, and the connection member 35 of the circuit breaker 100B is connected to the grounding conductor 92 of a system different from the grounding conductor 91. . As a result, the ground fault circuit breaker 100A and the circuit breaker 100B for wiring are connected to different grounding systems. In the example shown in FIG. 11, the grounding conductors 91 and 92 are metal bars, but they may be conductive members other than metal bars. In this case, the connection member 35 is not limited to the configuration described above as long as it can be engaged with the grounding conductors 91 and 92 .

Further, when installing the earth leakage circuit breaker 100A or the wiring circuit breaker 100B to the switchboard, the grounding conductor 90 of the desired system can be inserted into the connection member 35 in advance. Therefore, after that, the connection to the ground terminal provided on the switchboard can be completed only by connecting the ground wire 81 of the load device to the quick-connect terminal 30 of the quick-connect terminal portion 3C.

Although two spaces 42 in the thickness direction in which the connection members 35 of the quick-connect terminal unit 2 can be arranged have been described, three or more spaces 42 may be provided in the thickness direction. . Each connection member 35 of the quick-connect terminal portion 3C is arranged in the longitudinal direction of the circuit breaker 100 so as to face the direction away from the body portion 1, but each connection member 35 of the quick-connect terminal portion 3C is not limited to the directions described above. For example, each connection member 35 of the quick-connect terminal portion 3C has a space for inserting the grounding conductor 90 between the vertical surface of the switchboard and the quick-connect terminal portion 3C when the circuit breaker 100 is mounted on the vertical surface of the switchboard. If available, they may be arranged to face the vertical plane of the switchboard.

In the quick-connect terminal unit 2, some of the plurality of connection members 35 are arranged in the longitudinal direction of the circuit breaker 100 in a direction away from the main body 1, and the remaining connection members 35 Member 35 may be arranged to face the vertical plane of the switchboard. Also, in the quick-connect terminal unit 2 , some or all of the plurality of connection members 35 may be arranged to face the direction inclined toward the vertical surface of the switchboard with respect to the longitudinal direction of the circuit breaker 100 .

In addition, as shown in FIG. 2, the circuit breaker 100 has a space 70 formed between the body portion 1 and the quick-connect terminal portion 3C. The space 70 has the same length in the width direction as the width of the quick-connect terminal portion 3A, and has a length half the thickness of the quick-connect terminal portion 3A in the thickness direction. can carry the In addition, the space 70 is set in the range of 0.4 to 0.6 times the thickness of the quick-connect terminal portion 3A in the thickness direction, but is not limited to this range.

In the example shown in FIG. 11, the four quick-connect terminal units 2 are closely arranged in the width direction, and the four quick-connect terminal units 2 are connected in the width direction by the spaces 70 in the four quick-connect terminal units 2. A length of wiring duct 72 is formed. Therefore, for example, a plurality of contact signal output lead wires 5 drawn out from the earth leakage circuit breaker 100A and circuit breaker 100B for wiring can be passed through the wiring duct 72 . Moreover, since the other quick-connect terminal portions 3 do not protrude from the quick-connect terminal portion 3B, a space is formed between the quick-connect terminal portions 3C adjacent in the width direction. Therefore, the wiring of each of the earth leakage circuit breaker 100A and the circuit breaker 100B can be pulled out from the space formed between the quick-connect terminal portions 3C adjacent in the width direction, and the degree of freedom of wiring can be increased.

Further, the earth leakage circuit breaker 100A and the wiring circuit breaker 100B may each have a configuration in which one connecting member 35 is arranged in a mutually different space 42 . 12 is a side view showing a cross section of part of the earth leakage breaker according to the first embodiment. FIG. 13 is a side view showing a cross section of part of the circuit breaker for wiring according to the first embodiment. FIG. 14 is a perspective view showing the external appearance of a state in which the ground fault circuit breaker shown in FIG. 12 and the circuit breaker for wiring shown in FIG. 13 are installed in parallel.

In the earth leakage circuit breaker 100A shown in FIG. 12, the connecting member 35 is arranged in the lower space 42 in FIG. 12 of the two spaces 42, and the connecting member 35 is arranged in the upper space 42 in FIG. not 13, the connection member 35 is arranged in the upper space 42 in FIG. 13 of the two spaces 42, and the connection member 35 is arranged in the lower space 42 in FIG. is not placed.

Therefore, as shown in FIG. 14, even if the grounding conductors 91 and 92 are arranged straddling the earth leakage breaker 100A and the circuit breaker 100B, the grounding conductor 91 is connected to the earth leakage breaker 100A. Although it is connected to the connecting member 35, it is not connected to the connecting member 35 of the circuit breaker for wiring 100B. Further, the grounding conductor 92 is connected to the connection member 35 of the circuit breaker for wiring 100B, but is not connected to the connection member 35 of the earth leakage circuit breaker 100A. Therefore, different grounding conductors 91 and 92 can be easily connected between the circuit breaker 100B and the earth leakage circuit breaker 100A.

As described above, the quick-connect terminal unit 2 according to the first embodiment is a quick-connect terminal unit detachably attached to the body portion 1 of the circuit breaker 100, and the quick-connect terminal portions 3A, 3B, and 3C are Prepare. The quick-connect terminal portions 3A and 3B are examples of a first quick-connect terminal portion, and the quick-connect terminal portion 3C is an example of a second quick-connect terminal portion. The quick-connect terminal portions 3A and 3B have a quick-connect terminal 30 connected to a power supply line 80, which is a power supply cable connected to a load device. The quick-connection terminal portion 3C is electrically connected to the quick-connection terminal 30 connected to the grounding wire 81, which is the grounding wire connected to the load device, and to the quick-connection terminal 30 connected to the grounding wire 81. It has an electrically conductive connecting member 35 formed to be engageable with the electrical conductor 90 . The quick-connect terminal portion 3</b>C has a plurality of spaces 42 in which the connecting member 35 can be arranged, and the connecting member 35 is arranged in one of the plurality of spaces 42 . As a result, the quick-connect terminal unit 2 can have the quick-connect terminal 30 to be connected to the ground wire 81 while increasing the degree of freedom in grounding. For example, since the quick-connect terminal portion 3C has the connection member 35 formed to be engageable with the grounding conductor 90, even if there are a plurality of grounding conductors 90 of different systems, the grounding of the system is possible. A conductor 90 can be selected to be grounded.

The connecting member 35 is formed so that the grounding conductor 90 can be inserted in the longitudinal direction, which is the direction in which the quick-connect terminal unit 2 and the main body 1 face each other, and when the grounding conductor 90 is inserted, the grounding conductor 90 is sandwiched. As a result, the ground conductor 90 can be inserted into the quick-connect terminal unit 2 from the longitudinal direction. 90 can be avoided.

The quick-connect terminal portions 3A and 3B are attached to the end portion 10b of the body portion 1 on the load side. The quick-connect terminal portion 3C is formed at a position farther from the body portion 1 than the quick-connect terminal portions 3A and 3B in the longitudinal direction and protruding from the quick-connect terminal portion 3A. This can prevent the circuit breaker 100 from becoming longer in the width direction.

Further, the quick-connect terminal portion 3C is provided at a position farther from the plane 85 including the operating surface 15 of the circuit breaker 100 than the quick-connect terminal portions 3A and 3B. In a state in which the main body 1 is attached to the quick-connect terminal unit 2, a space 70 is formed between the main body 1 and the quick-connect terminal 3C for drawing out the wiring from the main body 1 to the outside. This facilitates wiring.

The quick-connect terminal portions 3A and 3B are arranged side by side along the load-side end portion 10b of the body portion 1 . As a result, the quick-connect terminals 30 to which the power supply lines 80 are connected are arranged side by side in the width direction, so that it is possible to prevent incorrect wiring or the like.

Also, the connection member 35 is arranged at a position farther than the quick-connect terminal 30 with respect to the plane 85 including the operating surface 15 of the circuit breaker 100 . This can prevent the circuit breaker 100 from becoming longer in the width direction.

Moreover, the plurality of spaces 42 are arranged side by side in the thickness direction, which is the direction perpendicular to the plane 85 . As a result, for example, in a state in which the earth leakage breaker 100A and the circuit breaker 100B are arranged side by side in the width direction, even if there are a plurality of grounding conductors 90 of different systems, Conductor 90 can be easily selected and grounded.

Moreover, the circuit breaker 100 includes a plurality of connection members 35 . Each of the plurality of connecting members 35 is arranged in a corresponding one of the plurality of spaces 42 . Thereby, for example, the ground fault circuit breaker 100A and the circuit breaker 100B for wiring can have the same configuration of the quick connection terminal unit 2 .

Each of the plurality of quick-connecting terminal portions 3 includes an insertion hole 31 into which an electric wire connected to a load device is inserted, a conductive member 32 electrically connected to the electric wire inserted from the insertion hole 31, and an electric wire. holding portion 33 for holding the electric wire in a state in which is electrically connected to the conductive member 32; As a result, the state in which the electric wire is connected can be maintained, or the state in which the electric wire is maintained can be released.

The conductive member 32 also includes an elastic member 36 and a latch 37 . The elastic member 36 has a wire contact surface 51 that contacts the wire inserted through the insertion hole 31 . The holding portion 33 includes a contact pressure spring portion 36b that faces the wire contact surface 51 and presses the wire inserted from the insertion hole 31, and a chain that faces the wire contact surface 51 and restricts movement of the wire in the withdrawal direction. and a locking spring portion 36c. The contact pressure spring portion 36b is an example of a first spring portion, and the locking spring portion 36c is an example of a second spring portion. The latch 37 has a wire receiving portion 37b that receives a wire inserted from the insertion hole 31, a wire receiving portion 37b that moves when the wire receiving portion 37b receives the wire, and a position before the movement when the wire receiving portion 37b stops receiving the wire. and a latch portion 37c that returns to the The release portion 34 includes an operation portion 40a, a pushing portion 40b that pushes the contact pressure spring portion 36b when the operation portion 40a is mechanically operated, and a latch portion 37c that is moved to the post-movement position. It has a latch engaging portion 40c that engages with the latch portion 37c and releases the engagement with the latch portion 37c when the position of the latch portion 37c returns to the position before movement. As a result, the state in which the electric wire is connected can be maintained, or the state in which the electric wire is maintained can be released.

Moreover, the circuit breaker 100 according to the first embodiment includes the quick-connect terminal unit 2 and the main body portion 1 . A power supply terminal 6 connected to a power supply is provided at a power supply side end 10a of the main body 1 which is one end in the longitudinal direction of the circuit breaker 100 . Fastening members 7 and 8 for detachably attaching the quick-connect terminal unit 2 are provided at the end portion 10b on the load side, which is the other end portion in the longitudinal direction of the main body portion 1 . The fastening members 7 and 8 are an example of attachment portions. Thereby, in the circuit breaker 100, the flexibility of grounding can be improved while having the quick-connect terminal 30 connected to the ground wire 81. FIG.

The configuration shown in the above embodiment shows an example of the content of the present invention, and it is possible to combine it with another known technology, and one configuration can be used without departing from the scope of the present invention. It is also possible to omit or change the part.

1 body portion 2 quick-connection terminal unit 3, 3A, 3B, 3C quick-connection terminal portion 4 cover portion 4a, 4b through hole 5 contact signal output lead wire 6 power supply terminal 7, 8 fastening member 7a, 8a screw terminal, 7b, 8b screw, 9 handle, 10, 20 housing, 10a, 10b end, 11, 21 base, 12, 22, 13, 23 cover, 14 load side exhaust port, 15 operation surface, 15a opening, 16 rear surface, 17 side surface, 24 storage space, 30 quick connection terminal, 31 insertion hole, 32 conductive member, 32a support portion, 32b terminal portion, 32c, 35c contact portion, 33 holding portion, 34 release portion, 35, 71 connecting member 35a base portion 35b spring portion 36, 39 elastic member 36a, 37a supported portion 36b contact pressure spring portion 36c locking spring portion 37 latch 37b wire receiving portion 37c latch portion 38 latch Spring 40 Connection display button 40a Operation part 40b Pushing part 40c Latch engagement part 41 Connection display spring 42, 70 Space 51 Wire contact surface 52 Wire guide surface 61 Wire stopper 62, 63 Pin , 64 locking portion, 65 display hole, 72 wiring duct, 80 power supply line, 80a, 81a tip portion, 81 grounding wire, 85 plane, 90, 91, 92 grounding conductor, 100 circuit breaker, 100A earth leakage breaker, 100B Circuit breaker for wiring.

Claims (9)

A quick connection terminal unit detachably attached to the load side of the main body of a circuit breaker,
a first quick-connecting terminal portion having a quick-connecting terminal connected to a power feeding wire connected to a load device;
a quick-connect terminal connected to one of a plurality of ground wires connected to the load device; and a quick-connect terminal electrically connected to the ground wire and engaged with the ground conductor. a second quick connect terminal portion having a conductive ground connection member formed therein;
The second quick-connecting terminal portion is
A plurality of spaces are provided in which the grounding connection member can be arranged, and the grounding connection member is arranged in one of the plurality of spaces, so that one of the plurality of grounding wires is disposed according to the load device. made it possible to select one
A quick connection terminal unit characterized by: A quick connection terminal unit detachably attached to the load side of the main body of a circuit breaker,
A first quick-connecting terminal having a first quick-connecting terminal and a third quick-connecting terminal, which are arranged side by side along the load-side end of the main body and connected to a power supply cable connected to a load device. and a third quick-connect terminal portion;
a second quick-connecting terminal connected to a grounding wire connected to the load device; and a conductive grounding terminal electrically connected to the second quick-connecting terminal and formed to be engageable with the grounding conductor. a second quick-connect terminal portion having a connecting member and disposed on the opposite side of the main body portion with the first quick-connect terminal portion therebetween;
A space is formed on the side opposite to the body portion with the third quick-connect terminal portion interposed therebetween,
The power supply wire is inserted from above into the first quick-connect terminal and the third quick-connect terminal, and the ground wire is inserted from above into the second quick-connect terminal,
The second quick-connect terminal portion has a first groove and a second groove, which are grooves of at least two stages, in which the grounding conductor is horizontally inserted, and at least the first groove and the second groove One of the grooves accommodates the ground connection member, and the ground conductor is inserted into at least one of the first groove and the second groove in which the ground connection member is accommodated . terminal unit. 3. The quick-connect terminal unit according to claim 2, wherein a step is formed such that the upper surface of the second quick-connect terminal portion is lower than the upper surface of the first quick-connect terminal portion . A space is formed between the body portion, the second quick-connection terminal portion, and the lower surface of the first quick-connection terminal portion for drawing out wiring from the body portion to the outside. Item 4. The quick-connect terminal unit according to item 3. The first groove accommodates a first ground connection member as the ground connection member, the second groove accommodates a second ground connection member as the ground connection member, and the first groove accommodates a second ground connection member as the ground connection member. 5. A first grounding conductor as said grounding conductor is inserted into said second groove, and a second grounding conductor as said grounding conductor is inserted into said second groove . or the quick-connect terminal unit according to any one of the above. The ground connection member is accommodated in the first groove, the ground connection member is not accommodated in the second groove, the ground conductor is inserted into the first groove, and the ground connection member is inserted into the second groove. 5. The quick-connect terminal unit according to claim 2 , wherein no conductor is inserted . The second quick-connect terminal is
an insertion hole into which the grounding wire connected to the load device is inserted;
a conductive member electrically connected to the grounding wire inserted from the insertion hole;
a holding part that holds the grounding wire while the grounding wire is electrically connected to the conductive member;
The quick-connect terminal unit according to any one of claims 2 to 6 , further comprising a releasing portion that releases the state in which the grounding wire is held by the holding portion. The conductive member is
having a wire contact surface that contacts the grounding wire inserted from the insertion hole;
The holding part is
a first spring facing the wire contact surface and pressing the ground wire inserted through the insertion hole; an elastic member having a second spring portion;
a wire receiving portion that receives the grounding wire inserted from the insertion hole; and a wire receiving portion that moves when receiving the grounding wire and moves when the wire receiving portion stops receiving the grounding wire. a latch having a latch portion that returns to the position before movement;
The release unit is
an operation portion, a pushing portion that pushes the first spring portion when the operation portion is mechanically operated, and an engagement portion that engages with the latch portion when the position of the latch portion is the post-movement position. and a latch engaging portion that releases engagement with the latch portion when the position of the latch portion returns to the position before the movement. . a quick-connect terminal unit according to any one of claims 1 to 8 ;
and the main body,
A power terminal connected to a power supply is provided at one end of the main body in the longitudinal direction of the circuit breaker,
A circuit breaker, wherein a mounting portion for detachably mounting the quick-connect terminal unit is provided at the other end portion in the longitudinal direction of the body portion.

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