JP2003289604A - Terminal block for breaker and distribution board with primary-feed breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal block and a distribution board that enable a branch breaker, particularly for a primary feed to be arranged at the same place with other secondary-side branch breakers and that maximize the number of circuits of the branch breakers, when the primary-feed branch breaker is arranged inside the distribution board. <P>SOLUTION: This terminal block connects power source conductors to plug-in terminals of a breaker, which has a fixing means to a board and the plug-in terminals, and an opening, which is opened continuously from the short-side surface to the long side surface and provided for connecting conductors to the plug-in terminals. The terminal block consists of a conductive unit, provided with a terminal part that connects the power supply conductors and a bar-shaped end part that is connected to the plug-in terminals, and an insulated frame unit that holds the conductive unit and that is provided with the fixing means to the board. The terminal block is positioned in contact with the long-side surface of the breaker. The bar-like end part of the conductive unit is inserted into the plug-in terminals for connection and is led out of the opening in the long-side surface of the breaker. The terminal block for a breaker of such a structure and the distribution board with the primary feed breaker utilizing the terminal block are provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a part of a plurality of branch breakers equipped with a plug-in terminal connected to a distribution bar, and relates to a means for connecting a power source from a part other than the distribution bar. One of the main breakers for some branch breakers of the distribution board equipped with breakers and multiple branch breakers
Involved in the means for supplying power from the secondary side.

A distribution board has a structure in which a branch copper bar is arranged on the secondary side of a main breaker, a plurality of branch breakers are connected to the branch copper bar, and electricity is supplied from the branch breaker to load equipment. ing. When connecting a safety monitoring device such as a fire alarm as a load device, if the main breaker is cut off due to overload or electric leakage, the supply of power supply voltage is stopped and the monitoring device does not work. There is. Therefore, for such monitoring equipment, primary feed wiring is provided so that power is supplied (primary feed) from the primary side of the main breaker through a dedicated branch breaker, and safety monitoring equipment is provided even if the main breaker is cut off. The power supply voltage to is continuously supplied.

[0003]

2. Description of the Related Art Conventionally, the wiring of the above-mentioned primary feed is shown in FIG.
In a distribution board having a branch breaker with a plug-in terminal structure on the power supply side, a part of a branching copper bar (distribution bar) is modified for primary feed wiring to connect the connection bar 1021.
0 and 10220 are arranged, and the primary feed wire 10 connected to the primary side terminal of the main breaker 1 at one end of the connection bar.
230 and 10240 were connected, and the other end was wired so that a branch breaker 10200 dedicated to primary feeding was plugged in.

[0004]

However, when the branch breaker dedicated to the primary feed is installed on the distribution board, it is necessary to provide the connection bar, and therefore the branch breaker dedicated to the primary feed is used in addition to the branch breaker dedicated to the primary feed. There is a problem that the number of circuits of the branch breaker is reduced because it is necessary to remove the branch breaker facing the sandwiching the branch breaker and the branching copper bar (distribution bar).

Therefore, according to the present invention, when the primary feed branch breaker is arranged in the distribution board, the primary feed branch breaker can be arranged at the same place as the other secondary side branch breakers. An object of the present invention is to provide a terminal block and a distribution board that can maximize the number of branch breaker circuits.

[0006]

Therefore, the first aspect of the present invention comprises a fixing means to the substrate and a plug-in terminal, which is provided with an opening for connecting a conductor to the plug-in terminal. A terminal block for connecting a power supply conductor to a plug-in terminal of a breaker continuously opened from a short side surface to a long side surface, the terminal block connecting a terminal portion for connecting a power supply conductor and the plug-in terminal. The terminal block comprises a conductor having a bar-shaped end portion, an insulating frame body for holding the conductor and fixing means for fixing the conductor to the substrate, and the terminal block is located in contact with a long side surface of the breaker. The bar-shaped end portion is inserted into and connected to a plug-in terminal and is led out from an opening on a long side surface of the breaker, thereby providing a breaker terminal block.

A second aspect of the present invention comprises a substrate, a main breaker, a distribution bar connected to the secondary side of the main breaker, and a plug-in terminal connected to the distribution bar, and the long side surface of the substrate. Of a distribution board having a plurality of branch breakers fixed side by side so that they are adjacent to each other, the branch breakers located at the side end portions of the plurality of branch breakers are replaced with the breaker and the breaker terminal block according to claim 1. The present invention provides a distribution board with a primary feed breaker, characterized in that a terminal portion of the terminal block and a primary side of a main breaker are connected by a power conductor.

Thus, according to the present invention, when the primary feed branch breaker is arranged in the distribution board, the primary feed branch breaker can be arranged at the same place as the other branch breakers on the secondary side. Further, it is possible to provide a terminal block and a distribution board that can provide the maximum number of branch breaker circuits.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to the drawings. 6 to 9 are explanatory views of a distribution board in which the power supply terminals of the branch breaker are of the plug-in type and the primary feed-only branch breaker is not provided. In FIG. 6, 1 is a main breaker, and 2 and 3 are branch breaker installation parts, and a plurality of branch breakers are arranged in two rows.
There are 8 branch breakers in total, 4 on 3 side. The main breaker and multiple branch breakers are 9 and 4
Secondary distribution terminal 102 of the main breaker
And the power supply side terminals of the plurality of branch breakers are electrically connected. The branch breakers on the 2nd and 3rd sides face each other with a distribution bar interposed. 5 and 6 are the voltage switching devices of the branch breakers located on the uppermost left side of the figure and 5 is the upper side 7
In the branch breaker (6), 6 is a voltage switching device for the branch breaker on the lower side (8), and the supply voltage to each branch breaker is switched between 100V and 200V of a single-phase three-wire system.

FIG. 7 is a diagram showing in detail the main breaker, branch breaker and distribution bar of FIG. 6, and FIG.
The disassembled structure of the distribution bar including 0V200V voltage switching means is shown. In FIG. 8, 11 to 13 are main conductors, 11 is a single-phase three-wire type L1 pole, 12 is an N pole, and 13 is an L2 pole, which are connected to the secondary side of the main breaker 1, respectively. From the N-pole main conductor of 12 there are U-shaped cutouts as many as the number of branch breakers 1201, and in the main conductors of 11 and 13, U-shaped cutouts 1101 and 1301 and connecting portions. 1102 and 1302 are provided by the number of branch breakers in one row. 501 and 601 are switching screws, 50
2 and 602 are connection plates, 503 and 603 are switching connectors, 5
04 and 604 are female thread members, and 501 to 504 and 110
1, 1201 to 5 voltage switching devices 601-604,
1202 and 1301 constitute 6 voltage switching devices.

Reference numeral 10 in FIG. 9 is an insulating frame for insulating each voltage switching device from each other, and the inside thereof is partitioned into a number of partitions of the voltage switching device, and each partition has a connection plate and a branch breaker of the main conductor. Notched window portions 1001 and 1002 extending the connection portion to
Is provided.

The voltage switching device of FIG. 8 is combined as follows. The screw 501 penetrates the long hole portion of the connection plate 502 and the switching connector 503 and is screwed to the female screw member 504. The U-shaped notch 1101 or 1201 is sandwiched between the female screw member 504 and the switching connector 503. Is screwed on. 1
The U-shaped notches of 101 and 1201 are arranged so that the U-shaped open portions face each other.
In the state where the screw is loosened, the screw 501, the switching connector 503, and the female screw member 504 move in the elongated hole of the connection plate 502,
It is configured so that it can move back and forth between the U-shaped notches 1101 and 1201.

In FIG. 8, the distribution bar and the branch breaker include a connecting plate 602 extending from the insulating frame 10 and a connecting portion 1.
102 is a plug-in terminal 80 on the power supply side of the branch breaker 8
1 and 802 are plugged in and elastically connected. In this state, the screw 601 is moved to a position close to the branch breaker 8 in the elongated hole of the feed plate 602, and the screw is tightened.
02 is a branch breaker 8 electrically connected to the N pole
Is connected to the N pole and L2 pole of a single-phase three-wire system, a voltage of 100 V is supplied to the branch breaker 8, and if it is moved closer to the position farther from the branch breaker 8 in the long hole and the screw is tightened,
The connection plate 602 is electrically connected to the L1 pole, and the branch breaker 8 is connected to the L1 pole and the L2 pole of the single-phase three-wire system.
A voltage of 200V will be supplied to the branch breaker 8. Similarly, branch breaker 7 installed facing each other
Also, the supply voltage can be switched by the voltage switching device 5.

1 and 2 are explanatory views of a breaker terminal block according to the present invention. In FIG. 1, 20 is a breaker, 2
Reference numeral 1 is a substrate, 22 is a terminal block, and 23 and 24 are power supply conductors. The breaker 20 has a fitting recess (not shown) on the mounting surface for the board 21, and the fitting projection 2 of the board 21 is placed in the fitting recess.
11 engages with each other, and a claw (not shown) protrudes from the breaker 20 and is fixed to the substrate 21 with respect to the groove 212 of the substrate 21. The short side surface 201 of the breaker 20 has openings 2051 and 2061 for plug-in terminals, and the openings have openings 2052 and 2062 continuous to the long side surface 202 side.

Reference numeral 22 denotes a terminal block, which is composed of terminal portions 2222 and 2232 and a bar-shaped end portion 222 as shown in FIG.
1 and 2231 and conductors 222 and 223, and an insulating frame 221. The bar is assembled as shown in FIG. 1 so as to expose the bar-shaped end portions 2221 and 2231 and the terminal portions 2222 and 2232 from the insulating frame body. End 22
21 and 2231 are inserted from the plug-in terminal openings 2051 and 2061 of the short side surface 201 of the breaker 20 to be connected to the plug-in terminals, are housed in the openings 2052 and 2062, and the insulating frame is located in contact with the long side surface 202. ，
The holes 2211 of the insulating frame are fixed to the holes 213 of the substrate 21 with screws 25. Then, the terminal portions 2222, 2232
Power supply conductors 23 and 24 are connected to the circuit breaker 20, and the breaker 20 is supplied with a voltage from the power supply conductors 23 and 24.

FIG. 3 is a diagram of a branch breaker, a board, and a distribution bar portion when the terminal block 22 and the breaker 20 shown in FIG. 1 are mounted on a distribution board. The distribution bar 4 and the distribution bar 4 are shown in FIG. A plurality of branch breakers 31 to 37 to be connected are attached to the substrate 21, and the breaker 20 and the terminal block 22 are attached to the side ends of the branch breakers 31 to 33. In addition,
The connecting portion of the conductive bar 4 for connecting to the breaker 20 is cut in advance.

FIG. 4 is a conceptual diagram in which a main breaker 1 is further attached to the distribution bar and a plurality of branch breakers shown in FIG. 3 to constitute a distribution board. The branch breakers 31 to 37 are secondary sides of the main breaker 1. A voltage is supplied from the distribution bar 4 connected to the terminal 102, and only the breaker 20 is connected to the terminal block 22 through the power supply conductors 23 and 24.
A voltage is supplied from the secondary terminal 103. In addition, in FIG. 5, a breaker 20 ′ and a terminal block 22 ′ are attached instead of the branch breaker 34 shown in FIG.
2'is an embodiment in which a voltage is supplied from the primary side terminal 103 of the main breaker 1. The connection from the secondary side terminal 102 of the main breaker 1 to the distribution bar 4 is omitted. Thus, according to the present invention,
It is also possible to install two primary feed breakers on the side edge of the branch breaker.

[0018]

According to the breaker terminal block and the distribution board with the primary feed breaker as described above, the number of branch breakers is sacrificed as shown in FIG. 10 even when the primary feed breaker is arranged in the branch breaker installation portion. As shown in FIG. 4, it is possible to provide a breaker terminal block capable of installing eight breakers and a distribution board with a primary feed breaker if there is a breaker installation space for eight circuits as shown in FIG. Further, as shown in FIG. 5, the other breaker 34 can be changed to a primary feed breaker at the side end portion.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a breaker terminal block and a breaker of the present invention.

FIG. 2 is an exploded perspective view of a breaker terminal block.

FIG. 3 is an embodiment in which the breaker terminal block and breaker of the present invention are incorporated in a branch circuit unit of a distribution board.

FIG. 4 is a conceptual diagram of a distribution board with a primary feed breaker using the breaker terminal block of the present invention.

FIG. 5 is a conceptual diagram of a distribution board with a primary feed breaker in which two primary feed circuits are provided.

FIG. 6 is a conceptual diagram of a distribution board without primary feed.

[Fig. 7] Diagram of branch breaker, distribution bar, board, and master breaker of distribution board without primary feed

8 is an exploded explanatory view of only the conductive portion of the distribution bar shown in FIG.

9 is an insulating frame body of the distribution bar shown in FIG.

FIG. 10 is a conceptual diagram of a conventional distribution board with a primary feed breaker.

[Explanation of symbols]

1..Main breaker 103..Primary side terminal 4..Distribution bar 20..Breaker 201..Short side surface 202..Long side surface 2051,2061..Short side surface side plug-in terminal opening 2052,2062.・ Plug-in terminal opening 21 on the long side surface ・ Substrate 22 ・ ・ Terminal block 221 ・ ・ Insulating frames 222, 223 ・ ・ Conductors 2221,231 ・ ・ Bar-shaped ends 2222, 2232 ・ ・ Terminal 23, 24 .. Power supply conductors 31 to 37 .. Branch breaker

Claims (2)

[Claims] 1. A breaker having fixing means to a substrate and a plug-in terminal, and having an opening for connecting a conductor to the plug-in terminal, the opening being continuous from a short side surface to a long side surface. A terminal block for connecting a power source conductor to the plug-in terminal, the terminal block having a terminal portion for connecting the power source conductor and a bar-shaped end portion for connecting to the plug-in terminal, and holding the conductor. In addition, the terminal block is located in contact with the long side surface of the breaker, and the bar-shaped end portion of the conductor is inserted and connected to the plug-in terminal. A breaker terminal block characterized by being led out from the opening on the long side of the breaker. 2. A substrate, a main breaker, a distribution bar connected to the secondary side of the main breaker, and a plug-in terminal connected to the distribution bar, the long side being adjacent to the substrate. The branch breaker located at a side end portion of the plurality of branch breakers of a distribution board having a plurality of fixed branch breakers is replaced with the breaker and the breaker terminal block according to claim 1, and the terminal section of the terminal block is replaced. A distribution board with a primary feed breaker, in which the primary side of the main breaker is connected to the primary side with a power conductor.