KR100804080B1 - Measuring instrument corporation and circuit breaker corporation being connected to terminal block for uninterrupted power supply - Google Patents

Abstract

A terminal block for an uninterrupted power supply, a measuring instrument corporation, and a circuit breaker corporation connected to the terminal block for the uninterrupted power supply are provided to be easily manipulated by one touch method without additional manipulation by an operator. A terminal block for uninterrupted power supply includes a terminal block body(100), a switch(200), and a connection terminal. A power source-side supply terminal unit(100a) is formed on the end of the terminal block body and a load-side supply terminal unit(100b) is formed on the other end of the terminal block body. The terminal block body is provided with an installation surface(110) between the power source-side supply terminal block and the load-side supply terminal block. The switch is installed in the terminal block body. One end of the connection terminal block is installed in the load-side supply terminal block unit by the switch and the other end of the connection terminal block is connected to the power source-side supply terminal block unit.

Description

Measuring instrument corporation and circuit breaker corporation Being connected to terminal block for uninterrupted power supply}

1 is a front view showing a terminal block and a meter capable of performing an uninterruptible construction of the prior art.

2 is a perspective view showing a state in which a wattmeter is coupled to the uninterruptible terminal block according to the first embodiment of the present invention.

3 is an exploded perspective view of FIG. 2.

4 is an exploded perspective view showing components of the power supply side supply end and the load side supply end of FIG.

5 is an exploded perspective view illustrating the connection terminal of FIG. 2.

6 is a cross-sectional view illustrating the switch of FIG. 2.

7 is a perspective view illustrating a state in which a circuit breaker is coupled to an uninterruptible terminal block.

8 is a cross-sectional view illustrating a process of coupling an uninterruptible terminal block and a power meter according to Embodiment 1 of the present invention.

9 is a cross-sectional view illustrating a state in which a power meter is coupled to an uninterruptible terminal block according to Embodiment 2 of the present invention.

10 is a cross-sectional view illustrating a process in which a circuit breaker is coupled to an uninterruptible terminal block according to Embodiment 2 of the present invention.

<Description of Major Reference Codes>

100 ... Terminal block body 110 ... Mounting surface

200 ... Switchgear 300 ... Connector

500 ... wattmeter 600 ... circuit breaker

1000 ... Uninterruptible terminal block 2000 ... Uninterruptible terminal block and power meter combination and wiring breaker combination

The present invention relates to an uninterruptible terminal block and a power meter combination and a circuit breaker combination coupled to the uninterruptible terminal block. In particular, the uninterruptible terminal block and its uninterruptible terminal block, which can shorten the replacement work time of the combination, can be replaced by the uninterruptible state when the combination is replaced. The present invention relates to a power meter combination and a circuit breaker assembly coupled to an uninterruptible terminal block.

In general, the combination coupled to the terminal block is divided into a power meter and a circuit breaker.

First, a wattmeter is a gauge installed to visually check the power used in a factory, home, or self-employment. Such a wattmeter is a mechanical method of turning a circular measuring plate in response to a current and a digital method of directly indicating a numerical value.

On the other hand, the circuit breaker is to cut the line in the event of wire protection, opening and closing of the load, a short circuit accident, and serves to cut off the power by operating (pushing or pulling) a handle protruding on one surface of the circuit breaker by the user.

Such a power meter or wiring breaker is formed in a box shape, the housing having a measuring plate or a blocking terminal in an inner space, and a terminal portion formed on the lower side of the housing.

However, in the structure of the terminal portion formed on the lower side of the housing of the conventional electricity meter or the circuit breaker, the wires are in contact with each other in the process of inserting or drawing the exposed portion of the wire into the terminal groove of the terminal block when the assembly is replaced due to termination, extension, and instrument breakdown. There was a problem that a large human accident may occur due to a burn on the face or the front exposed area due to the explosion of the assembly.

That is, when the conventional electricity meter or wiring breaker is coupled to or replaced with the terminal block, the terminal conductor in the terminal groove formed in the terminal block is installed or disassembled adjacent to the inlet side of the terminal groove. At this time, safety accidents are caused to occur between the wires.

In order to solve this problem of contact, a separate power circuit breaker is installed, and the cut-off switch of the power circuit breaker is "off" and placed in an electrostatic state, and then a combination (capacity meter, circuit breaker) connected to the terminal block is replaced. However, the above method has a problem in that it is not possible to supply power to the customer for a long time, causing inconvenience.

In other words, in the current work of replacing the electricity meter or the circuit breaker, install a separate power cut and then turn off the power and then perform the replacement work.

Recently, the configuration of the terminal block and the meter capable of uninterruptible construction described in Korean Patent Publication No. 423528 (hereinafter, referred to as "prior art"), which has been devised to secure such disadvantages, will be briefly described with reference to FIG. 1.

As shown in the drawing, the terminal block and the meter capable of performing the uninterruptible construction of the prior art are correspondingly coupled with the insertion piece 2 formed in the wattmeter 1, and the first inlet 12 receives power from the power supply source 4; A terminal portion 11 composed of a first outlet portion 14 and a second outlet portion 15 for outputting power to the second inlet portion 13 and the customer 5; and the second inlet portion 13; A terminal housing (10) comprising a common line (30) which always electrically connects the first outlet portion (14); It is moved to the left and right on the upper surface of the terminal housing 10, one side is composed of an additional terminal housing 20 to form a sliding pin 40 is always connected to the second outlet (15).

Such, when replacing the conventional electricity meter (1), there was an inconvenience to replace the electricity meter (1) after moving the sliding pin 40 to the left and right to maintain the uninterrupted state.

In addition, when the power meter 1 is removed while the sliding pin 40 is not moved due to carelessness of the worker, there is a problem in that the worker may be exposed to electric current and may be electrocuted.

The present invention has been made to solve the above problems, an object of the present invention is to provide a quick change of the combination coupled to the terminal block in the uninterrupted state, as a result of the uninterruptible terminal block and its uninterruptible terminal block that can shorten the working time To provide a meter combination and wiring breaker assembly for coupling to.

It is another object of the present invention to provide an uninterruptible terminal block and an uninterruptible terminal block coupled to the uninterruptible terminal block, which are easy to use by omitting the operation of moving the terminal to the left or right to maintain the uninterrupted state when the assembly is replaced.

In order to achieve the above object, the uninterruptible terminal block and the uninterruptible power terminal assembly and wiring breaker assembly coupled to the uninterruptible terminal block, the power supply side supply terminal portion (100a) and the load side supply terminal (140b) having a power supply side supply terminal (140a) In the uninterruptible terminal block consisting of a load side supply terminal portion (100b) having,
A power supply terminal 100a is formed at one end and a load supply terminal 100b is formed at the other end, and a terminal block main body 100 having an installation surface 110 is provided between the power supply terminal 100a and the load supply terminal 100b. ); A switch 200 installed in the terminal block main body 100; And a connection terminal 300 having one end intermittently disposed on the load side supply terminal part 100b by the switch 200 and the other end connected to the power side supply terminal part 100a. A contact terminal 220 installed below the pressing bar 210 and the pressing bar 210 to be lifted and being in contact with the power supply terminal piece 170 and the power supply connection piece 130a; It is characterized in that it consists of a spring that is in contact or non-contact with the power supply side piece 170 and the power supply side connection piece (130a) in accordance with the lifting and lowering of the push bar (210).

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In addition, the installation surface 110 is preferably formed at a position lower than the upper surface of the power supply terminal portion (100a) and the load side terminal portion (100b).

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On the other hand, the connection terminal 300 includes a first contact portion 310 in contact with the power supply side supply terminal piece 170; A second contact portion 320 in contact with the load side connection piece 130b; It is composed of a connection contact portion 330 connecting the first contact portion 310 and the second contact portion 320.

The push bar 210 is preferably installed at a position lower than the upper surface of the power supply terminal 140a.

In addition, the power side supply terminal 140a and the load side supply terminal 140b, when viewed from the side, the first contact surface 142 and the second contact surface 143 is formed perpendicular to the predetermined coupling space, The contact surfaces 142 and 143 are integrally connected roundly from the bottom, and are formed to have the front side and the back side open.

On the other hand, in the wattmeter combination is coupled to the uninterruptible terminal block consisting of the power supply side supply terminal portion (100a) having a power supply side supply terminal (140a) and the load side supply terminal portion (100b) having a load side supply terminal (140b) and the wattmeter (500),
The electricity meter 500 is coupled to the installation surface 110 of the uninterruptible terminal block.
When the electricity meter 500 is installed in the uninterruptible terminal block, the terminal part X of the electricity meter 500 presses the push bar 210 of the switch 200 so that the power supply terminal piece 170 and the power supply connection piece 130a are separated. Release the contact and energized through the electricity meter 500, or release the pressure of the switch (200) push bar 210 when disconnected to bring the power side supply terminal piece 170 and the power side connection piece (130a) in contact with the connection terminal ( It is characterized in that the current through the 300).

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Here, the terminal portion (X) is characterized in that the current piece 520 which is a conductor.

The current piece 520 has a circular shape in which the first current piece 521 fixed to the terminal groove 510 has a circular shape, and the second piece protrudes outward from the outer surface of the first current piece 521 by a predetermined length. The current piece 522 is formed in a rectangle.

In addition, in the circuit breaker assembly in which the uninterruptible terminal block made up of the power supply terminal portion 100a having the power supply terminal 140a and the load supply terminal portion 100b having the load side supply terminal 140b and the circuit breaker 600 are coupled to each other,
The circuit breaker 600 is coupled to the installation surface of the uninterruptible terminal block,
When the circuit breaker 600 is installed in the uninterruptible terminal block, the terminal part X of the circuit breaker 600 presses the push bar 210 of the switch 200 so that the power supply terminal piece 170 and the power supply connection piece 130a are pressed. ) To release the contact and energized through the circuit breaker 600, or release the pressure of the switch (200) push bar 210 when disconnected to bring the power side supply terminal piece 170 and the power side connection piece (130a) in contact. It characterized in that the current is energized through the connection terminal (300).

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Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

<Example 1>

Referring to Figures 2 to 8 will be described a preferred embodiment 1 of the present invention in detail.

As shown, the uninterruptible terminal block 1000 according to the first embodiment of the present invention has a power supply side supply terminal portion 100a, a load side supply terminal portion 100b and an installation surface 110 coupled to the terminal portion X of the coupling body W. The terminal block main body 100 having a control unit, the switch 200 installed in the terminal block main body 100, and the switch 200 to be intermittently connected to the load side supply terminal part 100b from the power supply side supply terminal part 100a by the switch 200. It is composed of a connection terminal 300.

Here, as shown in FIG. 3, the combination W is preferably provided with a power meter 500, and the terminal portion X is formed of a current piece 520 that is a conductor.

In addition, the combination W may be installed in which the circuit breaker 600 is coupled (see FIG. 7).

First, the terminal block main body 100 is an insulator (synthetic resin), the power supply side supply terminal portion (100a) is formed at one end and the load side supply terminal portion (100b) is formed at the other end, the power meter 500 can be installed therebetween. It is preferable that the installation surface 110 and the open space 111 is formed.

In addition, the supporting plate (not shown) in place of the open space 111 is formed on the installation surface 110 of the terminal block main body 200, the support plate (on the front and back of the installation surface 110) Not shown). That is, the support plate can prevent the flow of the electricity meter 500.

In addition, the installation surface 110 of the terminal block main body 100 is preferably formed at a position lower than the upper surface of the power supply side supply terminal portion (100a) and the load side terminal portion (100b).

Here, as shown in FIG. 3, a plurality of partition walls 120 are formed at predetermined intervals in the power supply side supply terminal portion 100a and the load side supply terminal portion 100b of the terminal block main body 100. In the inner space between the opening partition wall 120, a power side connection piece 130a and a load side connection piece 130b, a power side supply terminal 140a and a load side supply terminal 140b, and a ground portion 150 are respectively installed.

Specifically, as shown in FIG. 4, the power side connecting piece 130a and the load side connecting piece 130b extend from the respective power lead wires A to a predetermined length into the terminal block main body 100, and are downward from the center position thereof. It is preferable to be bent to extend back into the terminal block main body 100 again. In addition, a screw coupling hole 132 coupled to the screw 131 is formed near one end of the power lead line A.

In addition, the power supply terminal 140a and the load-side supply terminal 140b have a predetermined coupling space 141, and the first contact surface 142 and the second contact surface 143 are vertically formed and are integrated round to the bottom. Is connected and is formed to open the front side and the back side, it is coupled to the power side connection piece 130a and the load side connection piece 130b, respectively.

In addition, the grounding part 150 is for preventing the power lead wire (A) and the load lead wire (B) from flowing after being inserted, and are respectively fixed to the aforementioned power side connection piece (130a) and the load side connection piece (130b), the power side It is preferable that the screw coupling hole 132 formed in the connecting piece 130a and the load side connecting piece 130b be centered and manufactured in a “U” shape so as to be coupled to both sides thereof.

That is, the ground portion 150 is inserted into the power lead wire (A) and the load lead wire (B), respectively, and at the same time firmly adhered to the power supply side connecting piece 130a and the load side connecting piece 130b by screws 131, respectively. It serves to fix (see Figure 5).

In addition, the switch 200 installed in the terminal block main body 100 is preferably installed in the power supply side supply terminal portion (100a), it is also preferable that the switch 200 is located in the load side supply terminal portion (100b). (See Figure 5).

In addition, the switch 200 is installed on the push bar 210 which is raised and lowered by the current piece 520 of the power meter 500, the terminal groove 510, the power supply side supply terminal piece is installed below the push bar 210 A spring contacting or not contacting the power supply terminal piece 170 and the power supply connection piece 130a as the contact terminal 220 contacts the 170 and the power supply connection piece 130a and the push rod 210 moves up and down. It consists of.

Specifically, as shown in Figure 6 (a), the push bar 210 is preferably made of a rectangular plastic as an insulator. Of course, the push bar 210 may be manufactured in various shapes such as circular or polygonal.

In addition, the push bar 210 is preferably provided with a protruding piece 211 at the lower end so as not to be separated from the switch mounting portion 250 of the terminal block main body 100.

Here, the upper surface of the push bar 320 is preferably installed lower than the upper surface of the power supply terminal 140a and the load-side supply terminal 140b.

In addition, as shown in Figure 6 (b), the contact terminal 330 is a conductor that is manufactured and installed in a size corresponding to the upper surface of the protruding piece 211 of the pressing rod 210, the pressing rod 210 As the rise and fall of the through the connection terminal 300 to be described later to perform the role of energizing or blocking the current to the load-side supply terminal (140b).

Here, the spring 230 serves to elastically support the pressing bar 210 as well as to raise and lower.

In addition, the terminal block main body 100 in which the spring 230 is installed is preferably provided with a support protrusion 240 for preventing the spring 340 from being separated.

In addition, if the push bar 210 performs a function of lifting and lowering elastically, it is possible to selectively apply a variety of known forms other than the spring 230.

On the other hand, the connection terminal 300 is made of a highly conductive metal material, so that when the electricity meter 500 is removed to receive the current flowing from the power lead wire (A) so that the current flows to the load side supply terminal 140b. (See Fig. 5).

Here, the connection terminal 300, as shown in Figure 5, is installed in the installation surface 110 of the terminal block main body 100, the first contact portion 310 in contact with the power supply side supply terminal piece 170 ) And a second contact portion 320 in contact with the load side connection piece 130b, and a connection contact portion 330 connecting the first contact portion 310 and the second contact portion 320.

In addition, the first contact part 310, the second contact part 320, and the connection contact part 330 constituting the connection terminal 300 may be manufactured in one piece.

In addition, the connection terminal 300 is preferably formed in the shape of a flat surface.

On the other hand, as shown in Figure 3, looking at the current piece 520 formed in the terminal groove 510 of the electricity meter 500 coupled to the installation surface 110 of the terminal block main body 100, the terminal groove 510 The first current piece 521 is fixed to and has a circular shape, and the second current piece 522 protrudes to the outside of the first current piece 521 by a predetermined length.

In addition, the current piece 250 may be manufactured in various shapes in addition to the shape known in the art.

Hereinafter, referring to FIG. 8, the operation of the uninterruptible terminal block according to the present invention, the wattmeter assembly and the circuit breaker assembly 2000 coupled to the uninterruptible terminal block will be described.

First, the power supply side supply terminal 140a, the load side supply terminal 140b, the switch 200 and the connection terminal 300 are sequentially installed in the terminal block main body 100, and then the current piece 520 of the wattmeter 500 is connected to the power supply side. It is inserted into the open side of the supply terminal 140a and the load side supply terminal 140b to be coupled.

Then, by connecting the respective power wire (A) and the load wire (B) to the ground portion 150, the current is supplied from the power supply side terminal 140a through the current side 520 of the electricity meter 500 through the load side supply terminal By flowing to 140b, a current is supplied to the customer side.

Subsequently, when the electricity meter 500 is to be removed due to a failure of the electricity meter 500, the electricity meter 500 is lifted after being held off. At this time, the push bar 210 that was elastically supported by the spring 230 installed in the opening unit 250 is lifted, and then the contact terminal 220 installed on the push bar 210 is the power supply terminal. By being in contact with the piece 170 and the power side connection piece 130a, the current is energized to the customer side without passing through the current piece 520 of the wattmeter 500.

On the other hand, if you want to combine the electricity meter 500 to be replaced, the push bar (in the process of coupling the current piece 520 of the electricity meter 500 to the insertion side of the power supply terminal 140a and the load-side supply terminal 140b) 210 is lowered in contact with the current piece 520 of the watt-hour meter 500 and the spring 230 is pressed in a compressed state. At this time, the contact terminal 220 installed on the protruding piece 211 of the push rod 210 is released from the power supply terminal piece 170 and the power supply connection piece 130a, the current flowing from the connection terminal 300 Will be blocked.

In addition, the sealing of the terminal block 1000 for the uninterruptible wattmeter and the wattmeter 500 according to the present invention have the same function as the conventional technology, and thus detailed description thereof will be omitted.

<Example 2>

Next, another embodiment of the present invention will be described with reference to FIG. 9.

However, about the same configuration as the first embodiment described above, the same reference numerals are used, and detailed description thereof will be omitted.

As illustrated in FIG. 9, the uninterruptible terminal block 1000 ′ according to the second exemplary embodiment of the present invention includes a power supply side supply terminal portion 100a ′ and a load side supply terminal portion 100b coupled to the current piece X of the coupling body W. As shown in FIG. ') And the mounting block 100', the terminal block main body 100 ', the switch 200' is installed in the terminal block main body 100 'and the switch 200' one end is supplied to the power supply side intermittently It is composed of a connecting terminal 300 'installed in the terminal portion 100a' and having the other end connected to the load side supply terminal 100b '.

Here, the combination W is preferably provided with a power meter 500 ', and the terminal portion X is formed of a current piece 520' which is a conductor.

In addition, the combination W may be installed in which the circuit breaker 600 'is coupled (see FIG. 10).

First, the terminal block main body 100 'is manufactured in a rectangular shape as an insulator (synthetic resin), one end of the power supply side supply terminal portion (100a') and the other end of the load side supply terminal portion (100b ') is formed between, It is preferable that the installation surface 110 'is formed so that the electricity meter 500' can be installed.

In addition, the installation surface 110 ′ of the terminal block main body 100 ′ is preferably manufactured to have the same height as the power supply side supply terminal portion 100 a ′ and the load side supply terminal portion 100 b ′.

Of course, the installation surface 110 ′ of the terminal block main body 100 ′ may be lower than the power supply side supply terminal portion 100 a ′ and the load side supply terminal portion 100 b ′.

Here, a screw fixing groove 132 'is fixed to the power supply terminal portion 100a' and the load side supply terminal portion 100b 'by which a power lead wire A and a load lead wire B are fixed by screws 131'. It is preferably formed.

In addition, the power supply terminal 140a 'and the load supply terminal 140b' are preferably formed in the installation surface 110 'of the terminal block main body 100'.

On the other hand, the switch 200 'is preferably installed between the above-described power side supply terminal 140a' and the load side supply terminal 140b '.

On the other hand, as shown, when looking at the current piece 520 'of the electricity meter 500' coupled to the installation surface 110 'of the uninterruptible terminal block 1000', a first current fixed to the terminal groove 510 ' The piece 521 'and the second current piece 522' are preferably manufactured in an "L" shape.

In addition, when viewed from the front, the second current piece 522 'is coupled to the power supply terminal 140a' and the load supply terminal 140b 'by an interference fit method while maintaining a firm coupling state. It is preferable that an elastic space portion 523 'is formed.

Other configuration and operation description is the same or similar to the configuration and operation description of the first embodiment described above, the detailed description thereof will be omitted.

According to the present invention of the configuration as described above, it is possible to quickly replace the assembly in the uninterrupted state by the switch and the connection terminal, and thereby there is an effect that can reduce the working time.

In addition, in order to maintain the uninterrupted state when replacing the combination, it is easy to use because it can be easily operated by one-touch type without the operator having to operate the terminal block separately.

Claims (14)

In the uninterruptible terminal block comprising the power supply terminal portion 100a having the power supply terminal 140a and the load supply terminal portion 100b having the load side supply terminal 140b, A power supply terminal 100a is formed at one end and a load supply terminal 100b is formed at the other end, and a terminal block main body 100 having an installation surface 110 is provided between the power supply terminal 100a and the load supply terminal 100b. ); A switch 200 installed in the terminal block main body 100; And One end of the load side supply terminal unit 100b is intermittently disposed by the switch 200, and the other end of the connection terminal 300 is connected to the power supply terminal unit 100a. The switch 200 is a push bar 210 which is installed to be elevated; A contact terminal 220 installed below the press bar 210 to be in contact with the power supply terminal piece 170 and the power supply connection piece 130a; Uninterruptible terminal block, characterized in that consisting of a spring 230 that is elastically actuated below the pressing bar 210 to enable the pressing rod 210 to move up and down. delete The method of claim 1, The installation surface 110 is an uninterruptible terminal block, characterized in that formed at a position lower than the upper surface of the power supply side supply terminal portion (100a) and the load side terminal portion (100b). delete delete delete The method of claim 3, wherein The push bar 210 is an uninterruptible terminal block, characterized in that installed in a position lower than the upper surface of the power supply side supply terminal (140a). The method of claim 1, As viewed from the side, the power supply terminal 140a and the load supply terminal 140b have a first contact surface 142 and a second contact surface 143 formed vertically with a predetermined coupling space, and the contact surfaces thereof. (142, 143) is an uninterruptible terminal block, characterized in that the front side and the rear side is formed integrally connected roundly from the bottom. In the power meter combination which is coupled to the uninterruptible terminal block consisting of a power supply side supply terminal portion (100a) having a power supply side supply terminal (140a) and a load side supply terminal portion (100b) having a load side supply terminal (140b) and a power meter (500), The uninterruptible terminal block is described in any one of claims 1, 3, 7, and 8, The electricity meter 500 is coupled to the installation surface 110 of the uninterruptible terminal block. When the electricity meter 500 is installed in the uninterruptible terminal block, the terminal part X of the electricity meter 500 presses the push bar 210 of the switch 200 so that the power supply terminal piece 170 and the power supply connection piece 130a are separated. Release the contact and energized through the electricity meter 500, or release the pressure of the switch (200) push bar 210 when disconnected to bring the power side supply terminal piece 170 and the power side connection piece (130a) in contact with the connection terminal ( A power meter combination, characterized in that the current through the 300). The method of claim 9, The terminal unit (X) is a power meter combination, characterized in that the current piece (520) that is a conductor. The method of claim 10, The current piece 520 has a circular shape in which the first current piece 521 fixed to the terminal groove 510 has a circular shape, and the second current piece protrudes outward from the outer surface of the first current piece 521 by a predetermined length. An electricity meter combination, characterized in that 522 is formed in a rectangle. In the circuit breaker assembly in which the uninterruptible terminal block consisting of the power supply side supply terminal portion 100a having the power supply side supply terminal 140a and the load side supply terminal portion 100b having the load side supply terminal 140b and the wiring breaker 600 are combined, The uninterruptible terminal block is described in any one of claims 1, 3, 7, and 8, The circuit breaker 600 is coupled to the installation surface of the uninterruptible terminal block, When the circuit breaker 600 is installed in the uninterruptible terminal block, the terminal part X of the circuit breaker 600 presses the push bar 210 of the switch 200 so that the power supply terminal piece 170 and the power supply connection piece 130a are pressed. ) To release the contact and energized through the circuit breaker 600, or release the pressure of the switch (200) push bar 210 when disconnected to bring the power side supply terminal piece 170 and the power side connection piece (130a) in contact. Breaker assembly for wiring characterized in that the current is energized through the connection terminal (300). The method of claim 12, The terminal unit (X) is a circuit breaker assembly, characterized in that the current piece (520 ') which is a conductor. The method of claim 13, The current piece 520 ′ is connected to one end of the first current piece 521 ′ fixed to the terminal groove 510 ′ and the second current piece 522 protrudes downward from one end of the first current piece 521 ′. ') Is formed and has a total "L" shape, the circuit breaker assembly.

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