KR102482074B1 - A circuit breaker - Google Patents

Abstract

The present invention relates to a circuit breaker which comprises: a case which includes a lower case and an upper case; an input terminal which is coupled to the lower case, and is connected with an external wire; a moving module which is coupled to the lower case, and includes a movable contact that is short-circuited from a fixed contact of the input terminal in response to the occurrence of an overcurrent; an instantaneous operation module which is coupled to an upper side of the moving module, and enables manual opening and closing; and a PCB module which is inserted into and coupled to the lower case, is electrically connected to the moving module, to detect electric leakage and arc generation, and operates the instantaneous operation module.

Description

Circuit breaker {A circuit breaker}

The present invention relates to circuit breakers, and more particularly to circuit breakers with improved assembly properties.

In general, earth leakage circuit breakers are installed in distribution panels of homes, shopping malls, factories, offices, department stores, etc., and an electromagnet or bimetal operates according to overcurrent that occurs in the case of a short circuit or short circuit, and The power supply to the internal load is cut off by being turned off so that the contacts of are spaced apart.

In an earth leakage breaker having a PCB that generates an earth leakage test current, a ring structure ZCT (Zero Phase Current Transformer) is generally mounted on the PCB. The ZCT senses when the test current is applied and operates the trip device, thereby disconnecting the connection between the lead-in terminal of the power supply line and the load terminal connected to the internal load so that the power supply to the internal load is cut off.

However, since the conventional compact earth leakage breaker needs to assemble and install a PCB including a handle part, a bimetal, a fixed iron core, and a ZCT in one case, assembly is not easy, and assembly must be performed manually.

Therefore, there is a problem in that workability and productivity are lowered.

(Patent Document 1) JP 2021-197297 A

(Patent Document 2) JP 2021-150116 A

(Patent Document 3) JP 2021-140908 A

(Patent Document 4) JP 2021-513724 A

An object to be solved by the present invention in consideration of the above problems is to provide a circuit breaker with improved assembly properties.

In particular, the present invention is to provide a circuit breaker that does not require separate wiring work during assembly.

The circuit breaker of the present invention for solving the above technical problem is a case including a lower case and an upper case, coupled to the lower case, an input terminal to which an external wire is connected, coupled to the lower case, and according to the occurrence of overcurrent A movable module including a movable contact that is short-circuited from the fixed contact of the input terminal, an instantaneous operation module coupled to the upper side of the movable module and enabling manual opening and closing, and inserted into the lower case, electrically connected to the movable module It may include a PCB module that is connected to, detects electric leakage and arc generation, and operates the instantaneous operation module.

In an embodiment of the present invention, the PCB module may include a moving connector plate electrically contacting the movable module.

In an embodiment of the present invention, the PCB module includes a wire having one end connected to the moving connector plate and the other end connected to an electrode, and the wire may pass through the ZCT.

In an embodiment of the present invention, the PCB module may include a first PCB for mounting the ZCT and a second PCB for processing a detection result of the arc detector.

In an embodiment of the present invention, the PCB module may include a module case accommodating the first PCB, the second PCB, and the arc detector, and the module case may be coupled to the lower case.

In an embodiment of the present invention, the first PCB may further include a pin core that is magnetized and operated according to a detection result of the ZCT or the arc detector.

In an embodiment of the present invention, the instantaneous operation module includes a handle rotatably coupled to the upper side of the side plate by a handle shaft and operated to an open/closed position according to a user's manipulation, and a handle shaft on both sides of the side plate. It may include an armature coupled by, a U pin coupled to a lower portion of the handle to operate a lever, and a trip bar rotatably coupled to one end of the side plate.

In an embodiment of the present invention, the movable module may include a movable contact at one end of the movable contact, a bimetal partially in contact with an opposite side of the movable contact of the movable contact, and a magnet partially in contact with the bimetal. .

In an embodiment of the present invention, the movable contact, the bimetal, and the magnet have a fastening hole, and a fitting part protruding downward from the circumference of the fastening hole of the magnet is inserted into the fastening hole of the bimetal and the movable contact, so that they are mutually coupled. It can be.

In an embodiment of the present invention, fastening holes of the movable contact, the bimetal, and the magnet coincide with the fastening holes of the moving connector plate provided in the PCB module, and may be fixed to the lower case by bolts.

A circuit breaker according to another aspect of the present invention includes a lower case including an input end insertion groove, a seating end and a PCB module insertion groove on the upper surface, an input end coupled to the input end insertion groove and connected to an external wire, and a seating end A movable module that is seated and coupled and includes a movable contact that is short-circuited from the fixed contact of the input terminal according to the occurrence of an overcurrent, is inserted into the PCB module insertion groove, and is electrically connected to the movable module to detect short circuit and arc occurrence , may include a PCB module that operates the instantaneous operation module.

In an embodiment of the present invention, the upper surface of the seating end is an inclined surface, and may include a fastening hole on the upper surface.

In an embodiment of the present invention, the movable module may include a movable contact at one end of the movable contact, a bimetal partially in contact with an opposite side of the movable contact of the movable contact, and a magnet partially in contact with the bimetal. .

In an embodiment of the present invention, the movable contact, the bimetal, and the magnet have a fastening hole, and a fitting part protruding downward from the circumference of the fastening hole of the magnet is inserted into the fastening hole of the bimetal and the movable contact, so that they are mutually coupled. It can be.

In an embodiment of the present invention, the fastening holes of the movable contact, the bimetal, and the magnet coincide with the fastening holes of the moving connector plate provided in the PCB module, and may be fixed to the fastening holes of the seating end by bolts.

In an embodiment of the present invention, the PCB module may include a moving connector plate electrically contacting the movable module.

In an embodiment of the present invention, the PCB module includes a wire having one end connected to the moving connector plate and the other end connected to an electrode, and an output terminal connecting the electrode and an external wire, the wire penetrating the ZCT. can do.

In an embodiment of the present invention, the PCB module includes a first PCB mounting the ZCT and a second PCB processing a detection result of the arc detector, and the first PCB is configured according to the detection result of the ZCT or the arc detector. It may further include a pin core that is magnetized and operates.

In an embodiment of the present invention, the PCB module may include a module case accommodating the first PCB, the second PCB, and the arc detector, and the module case may be coupled to the lower case.

In an embodiment of the present invention, the instantaneous operation module includes a handle rotatably coupled to the upper side of the side plate by a handle shaft and operated to an open/closed position according to a user's manipulation, and a handle shaft on both sides of the side plate. It may include an armature coupled by, a U pin coupled to a lower portion of the handle to operate a lever, and a trip bar rotatably coupled to one end of the side plate.

A circuit breaker according to another aspect of the present invention includes a lower case including an input end insertion groove, a seating end and a PCB module insertion groove on the upper surface, an input end coupled to the input end insertion groove and connected to an external wire, and a seating end A movable module that is seated and coupled and includes a movable contact that is short-circuited from the fixed contact of the input terminal according to the occurrence of an overcurrent, is inserted into the PCB module insertion groove, and is electrically connected to the movable module to detect short circuit and arc occurrence , A PCB module for operating an instantaneous operation module, wherein the movable module includes a movable contact, a bimetal, and a magnet, and the movable contact, the bimetal, and the magnet may have one end fitted to each other.

The circuit breaker of the present invention has an effect of improving assemblyability by modularizing and assembling a PCB, a load terminal, and a moving contact plate.

By making an electrical connection at the time of coupling between the module including the PCB and the case to which the operating unit is coupled, automation of the assembly process can be achieved, thereby improving productivity.

In addition, the present invention has the effect of further improving the assemblability by modularizing the movable contact, the bimetal, and the magnet.

1 is a perspective view of a circuit breaker according to a preferred embodiment of the present invention.
Figure 2 is a perspective view of a state in which the upper case is removed from Figure 1;
Figure 3 is an exploded perspective view of Figure 2;
4 is a cross-sectional configuration diagram of FIG. 2 .
5 is an exploded perspective view of an instantaneous operation module.
6 is a perspective view of a coupled state of an instantaneous operation module and a movable module.
Figure 7 is a cross-sectional view of Figure 6;
8 is an exploded perspective view of the movable module.
9 is a perspective view of the coupled state of the movable module.
10 is a perspective view of the front side of the PCB module.
11 is a rear side perspective view of the PCB module.
12 is a cross-sectional view of a coupled state of a PCB module.
13 is an exploded perspective view of the PCB module.
14 to 19 are perspective views of the assembly process of the circuit breaker of the present invention.

In order to fully understand the configuration and effects of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in various forms and various changes may be made. However, the description of the present embodiment is provided to complete the disclosure of the present invention and to completely inform those skilled in the art of the scope of the invention to which the present invention belongs. In the accompanying drawings, the size of the components is enlarged from the actual size for convenience of description, and the ratio of each component may be exaggerated or reduced.

Terms such as 'first' and 'second' may be used to describe various elements, but the elements should not be limited by the above terms. The above terms may only be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a 'first element' may be named a 'second element', and similarly, a 'second element' may also be named a 'first element'. can Also, singular expressions include plural expressions unless the context clearly indicates otherwise. Terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those skilled in the art unless otherwise defined.

Hereinafter, a circuit breaker according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

1 is a perspective view of a circuit breaker according to a preferred embodiment of the present invention, FIG. 2 is a perspective view of a state in which the upper case is removed from FIG. 1, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a cross-sectional view of FIG. 2 to be.

1 to 4, the circuit breaker of the present invention includes a case 10 including a lower case 11 and an upper case 12, a PCB module 60 coupled and fixed to the lower case 11, It includes an instantaneous operation module 50, an input terminal 30, an operation module 40 and a crossbar 20.

The input terminal 30 includes a fixed contact point 31 and is fixedly installed in the lower case 11 .

An external wire is connected to the input terminal 30.

The movable module 40 includes a movable contact 41 contacted or separated from the fixed contact 31, a bimetal 42 coupled to one end of the movable contact 41, and a magnet fixed to the bimetal 42. (43).,

Hereinafter, the detailed configuration and operation of elements constituting the present invention will be described in more detail.

5 is an exploded perspective view of an instantaneous operation module, FIG. 6 is a perspective view of a coupled state of an instantaneous operation module and a movable module, and FIG. 7 is a cross-sectional view of FIG.

Referring to FIGS. 5 to 7 , the instantaneous operation module 50 is rotatably coupled to the upper side of the side plate 51 by the handle shaft 53 and is operated in an open-closed position according to a user's manipulation. The handle 52, the armature 54 coupled by the handle shaft 53 on both sides of the side plate 51, and the U pin 55 coupled to the lower part of the handle 52 to operate the lever 56 ) and a trip bar 57 rotatably coupled to one end of the side plate 51.

In this structure, when the user moves the handle 52 to the closed position, the handle 52 rotates around the handle shaft 53. The U pin 55 coupled to the lower portion of the handle 52 moves under the force of the handle 52 .

At this time, since the U pin 55 is coupled to the central portion of the lever 56, the U pin 55 moves the lever 56 downward together while moving downward. Since the lever 56 is in contact with the crossbar 20, it moves the crossbar 20 together while moving downward.

The crossbar 20 presses the movable contactor 41, which will be described in more detail later, to come into contact with the fixed contact 31 of the input terminal 30 described above.

Conversely, when the user moves the handle 52 to the blocking position, the lever 56 moves upward, and the position of the crossbar 20 is restored by an elastic body (not shown). Therefore, the movable contact 41 is separated from the fixed contact 31 and cuts off the current supply.

As such, the instantaneous operation module 50 can be manually operated, and opens and closes according to the position of the handle 52 .

In addition, the movable contact 41 can be moved by the action of the bimetal 42.

If a fault current such as overcurrent occurs, the bimetal 42 bends and pushes the gap screw 58 coupled to the trip bar 57, so the trip bar 57 rotates, and part of the trip bar 57 The restraint of the lever 56 spanning is released.

At this time, the crossbar 20, which is pressed by the lever 56 in surface contact, moves upward by an elastic body (not shown) located at the bottom, and the movable contactor 41 located at the top of the crossbar 20 is also moved at the same time. As it is lifted, the fixed contact 31 and the movable contact of the movable contact 41 separate from each other, so that the current is cut off.

The movable contact 41, the bimetal 42, and the magnet 43 are provided with a coupling hole on one side where they come into contact with each other, and are mutually coupled to form the movable module 40.

As can be seen in the detailed assembly process of the present invention, which will be described later, assemblability can be improved compared to the conventional method of individually assembling the movable contactor 41, the bimetal 42, and the magnet 43.

8 is an exploded perspective view of the movable module 40, and FIG. 9 is a perspective view of the movable module 40 in a coupled state.

Referring to FIGS. 8 and 9 respectively, the movable module 40 has a plate-like structure and includes a movable contactor 41 having a fastening hole 41a at one end and a side where the fastening hole 41a of the movable contactor 41 is formed. The movable contact 44 coupled to the opposite end and the fastening hole 42a disposed above the fastening hole 41a of the movable contact 41 are in contact with the movable contact 41, and the other part is in contact with the first The bimetal 42 is bent at an angle and is in contact with the upper surface of the bimetal 42 around the fastening hole 43a disposed above the fastening hole 42a, and the other part is bent at a second angle. The shaped magnet 43 and the fastening hole 42a of the magnet 43 protrude downward from the outer circumferential surface to the fastening hole 42a of the bimetal 42 and the fastening hole 41a of the movable contact 41 It includes a fitting coupling portion 43b that is fitted and modularized.

The magnet 43 and the bimetal 42 may be electrically connected to each other by a lead wire.

The configuration of the movable module 40 as described above is a movable contact 41, breaking away from the method of coupling the existing movable contactor, bimetal and magnet to the case using bolts in a state where the fastening holes of the magnet are vertically stacked. , the bimetal 42 and the magnet 43 are first stacked and coupled to each other to provide a modular structure.

Therefore, when fixing to the lower case 11, since the movable module 40 itself can be fastened and fixed, the assembly process can be performed more easily.

8 and 9 show that the fitting coupling part 43b capable of coupling the bimetal 42 and the movable contact 41 protrudes from the bottom of the magnet 43 and explains it, but by applying this, the most The bimetal 42 and the magnet 43 may be fitted and fixed by using a fitting part protruding upward from the outer circumferential side of the fastening hole 41a of the lower movable contact 41.

In addition, by placing fitting parts protruding from the top and bottom around the fastening hole 42a of the bimetal 42, the lower movable contact 41 and the upper magnet 43 may be fixed.

The present invention can separate the movable contact and the fixed contact 31 of the movable contact 41 by detecting an electric leakage or an arc.

To this end, the present invention uses a PCB module 60.

10 is a front side perspective view of the PCB module 60, FIG. 11 is a rear side perspective view, FIG. 12 is a cross-sectional view of the coupled state, and FIG. 13 is an exploded perspective view.

10 to 13, the PCB module 60 applied to the present invention includes a moving connector plate 66 in contact with the movable module 40 and a first PCB 62 on which a ZCT 64 is mounted. ), a pin core 69 mounted on the first PCB 62 and movable when overcurrent is detected, an arc detector 65 for detecting arc generation, and a second PCB for processing the detection result of the arc detector 65 63, an electrode 68 connected to a wire (not shown) passing through the ZCT 64, an output terminal 67 interconnecting the electrode 68 and an external wire, and the moving connector plate 66, the first PCB 62, the second PCB 63, the arc detector 65, the electrode 68, and the output terminal 67 are inserted and fixed to the lower case 11. Module case 61 It is composed of.

The PCB module 60 having such a configuration can be modularized by combining the moving connector plate 66, the first PCB 62, the second PCB 63, etc., which are related parts, in advance by utilizing the module case 61.

In particular, in the prior art, since one end of the wire must be fixed to the bimetal and connected to the output end of the rear end through the ZCT, it is impossible to simply assemble the top and bottom of the PCB.

However, in the present invention, one end of the wire is connected to the moving connector plate 66, and the wire penetrates the ZCT 64 and is connected to the output terminal 67 at the rear end, and the PCB module 60 is connected to the lower case ( 11), the moving connector plate 66 electrically contacts the movable module 40, so that a current path passing through the ZCT 64 can be formed by assembling the PCB module 60 up and down. .

Therefore, the present invention makes assembly very easy and can achieve automation of the assembly process.

The moving connector plate 66 includes fastening holes, and may be mutually coupled with the fastening holes 41a, 42a, and 43a of the movable module 40 described above by fastening means such as bolts.

When a short circuit is detected through the ZCT 64, the coil is magnetized to move the pin core 69 backward.

By the movement of the pin core 69, the trip bar 57 coupled to the pin core 69 also moves backward, and the lever 56 linked to the trip bar 57 loses its seating position, so that the link is free. state, the handle rotates backward by the spring assembled to the handle 52, and the link rises by the connected U pin 55 to enter the blocking state.

This blocking operation works the same even when an arc is generated in the arc detector 65 .

There are many causes of arc defects, such as aging, insulation and wiring breakdown, mechanical and electrical stress due to overuse or overcurrent, connection defects, and excessive mechanical damage to insulation and wiring.

The arc detector 65 may use an arc detection method based on high frequency characteristics of a current transformer (CT).

As such, the present invention can perform a blocking operation according to overcurrent, electric leakage, and arc generation.

Hereinafter, the assembly process of the present invention will be described in more detail.

14 to 19 are perspective views of the assembly process of the circuit breaker of the present invention.

First, referring to FIG. 14, the lower case 11 has a hexahedral shape, and the upper portion has a crossbar 20, an input terminal 30, a movable module 40, an instantaneous operation module 50, and a PCB module 60 inserted and A structure that can be fixed is provided.

Specifically, it includes an input end insertion groove 13 into which the input end 30 is inserted and fixed, a seating end 15 into which the movable module 40 is seated and fixed, and a PCB module insertion groove 16 into which the PCB module 60 is inserted and fixed. can do. Between the input end insertion groove 13 and the seating end 15, the crossbar insertion groove 14 into which the crossbar 20 is inserted is located.

In this structure, first, as shown in FIG. 15, the input end 30 is inserted and fixed into the input end insertion groove 13. The input end 30 inserted and fixed into the input end insertion groove 13 provides a fixed contact point 31 toward the crossbar insertion groove 14.

Then, as shown in FIG. 16, the crossbar 20 and the movable module 40 are seated in the crossbar insertion groove 14 and the seating end 15, respectively.

As described above, the movable module 40 is modularized by combining the movable contact 41 providing the movable contact 44, the bimetal 42, and the magnet 43 by the fitting portion 43b, There is no need to individually seat and fix the movable contactor 41, the bimetal 42, and the magnet 43, so assemblyability is improved.

The seating end 15 has an inclined upper surface such that the height of the crossbar insertion groove 14 side is higher than that of the PCB module insertion groove 16 side. In addition, the seating end 15 has fastening holes for fixing with bolts in a vertical direction in a state in which the fastening holes 41a, 42a, and 43a of the movable module 40 and the fastening holes of the moving connector plate 66 are arranged vertically. has been

The movable module 40 is coupled in a direction in which the movable contact 44 faces the fixed contact 31 .

The crossbar 20 maintains a distance between the pair of movable modules 40 and maintains mutual insulation.

Then, as shown in FIG. 17, the instantaneous operation module 50 is fixed to the upper side of the movable module 40.

Then, as shown in FIG. 18, the PCB module 60 is inserted into the PCB module insertion groove 16.

At this time, the PCB module 60 is inserted and coupled in the direction in which the moving connector plate 66 faces the movable module 40, and then the movable contact 41 of the movable connector plate 66 and the movable module 40 using bolts. , The bimetal 42 and the magnet 43 are fixed to the seating end 15.

The PCB module 60 connects one end of the wire to the moving connector plate 66, and the wire penetrates the ZCT 64 so that the other end of the wire is connected to the electrode 68 at the rear end, and the electrode 68 As a structure in which the output terminal 67 and the output terminal 67 are in contact with each other, it is possible to insert the PCB module 60 into the PCB module insertion groove 16 to complete the coupling without additional wiring work.

Then, as shown in FIG. 19, the assembly of the circuit breaker of the present invention is completed by combining the upper case 12.

As such, the present invention modularizes the components of the circuit breaker and combines them with the lower case 11 to configure the circuit breaker without a separate wiring work, thereby improving assemblyability and enabling automation.

Embodiments according to the present invention have been described above, but these are only examples, and those skilled in the art will understand that various modifications and embodiments of equivalent range are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the following claims.

10: case 11: lower case
12: upper case 13: input terminal insertion groove
14: Crossbar insertion groove 15: Seating end
16: PCB module insertion groove 20: crossbar
30: input terminal 31: fixed contact
40: movable module 41: movable contactor
42: bimetal 43: magnet
44: movable contact 50: instantaneous action module
51: side plate 52: handle
53: handle axis 54: amateur
55: U pin 56: lever
57: trip bar 58: gap screw
60: PCB module 61: module case
62: first PCB 63: second PCB
64: ZCT 65: arc detector
66: moving connector plate 67: output end
68: electrode 69: pin core

Claims (21)

A case including a lower case and an upper case;
an input end coupled to the lower case and to which an external wire is connected;
an movable module coupled to the lower case and including a movable contact that is short-circuited from the fixed contact of the input terminal in response to an overcurrent;
an instantaneous operation module coupled to an upper side of the movable module and enabling manual opening and closing; and
A PCB module inserted into and coupled to the lower case, electrically connected to the movable module, detecting electric leakage and arc generation, and operating the instantaneous operation module;
The movable module,
a movable contact in which the movable contact is located at one end;
a bimetal that partially contacts the opposite side of the movable contact of the movable contact; and
Including a magnet partially in contact with the bimetal,
The movable contact, the bimetal, and the magnet have fastening holes,
The circuit breaker characterized in that the fitting part protruding downward from the circumference of the fastening hole of the magnet is inserted into the fastening hole of the bimetal and the movable contact and coupled to each other. According to claim 1,
The PCB module,
A circuit breaker comprising a moving connector plate electrically contacting the movable module. According to claim 2,
The PCB module,
A wire having one end connected to the moving connector plate and the other end connected to an electrode,
The circuit breaker, characterized in that the wire passes through the ZCT. According to claim 3,
The PCB module,
The circuit breaker characterized in that it comprises a first PCB for mounting the ZCT and a second PCB for processing the detection result of the arc detector. According to claim 4,
The PCB module,
A module case accommodating the first PCB, the second PCB, and the arc detector,
The circuit breaker, characterized in that the module case is coupled to the lower case. According to claim 4,
The first PCB,
The circuit breaker further comprises a pin core that is magnetized and operated according to a detection result of the ZCT or the arc detector. According to claim 1,
The instantaneous operation module,
a handle rotatably coupled to the upper side of the side plate by a handle shaft and operated in an open/closed position according to a user's manipulation;
Armatures coupled by handle shafts on both sides of the side plate;
U pin coupled to the lower part of the handle to operate the lever; and
A circuit breaker including a trip bar rotatably coupled to one end of the side plate. delete delete According to claim 1,
The fastening holes of the movable contact, the bimetal, and the magnet coincide with the fastening holes of the moving connector plate provided in the PCB module,
A circuit breaker characterized in that it is fixed to the lower case by bolts. A lower case including an input end insertion groove, a seating end, and a PCB module insertion groove on the upper surface;
an input end coupled to the input end insertion groove and connected to an external wire;
a movable module including a movable contact that is seated and coupled to the seating end and is short-circuited from the fixed contact of the input end when an overcurrent occurs; and
A PCB module inserted into the PCB module insertion groove, electrically connected to the movable module, detecting electric leakage and arc generation, and operating an instantaneous operation module;
The movable module,
a movable contact in which the movable contact is located at one end;
a bimetal that partially contacts the opposite side of the movable contact of the movable contact; and
Including a magnet partially in contact with the bimetal,
The movable contact, the bimetal, and the magnet have fastening holes,
The circuit breaker characterized in that the fitting part protruding downward from the circumference of the fastening hole of the magnet is inserted into the fastening hole of the bimetal and the movable contact and coupled to each other. According to claim 11,
The upper surface of the seating end is an inclined surface,
Circuit breaker characterized in that it comprises a fastening hole on the upper surface. delete delete According to claim 11,
The fastening holes of the movable contact, the bimetal, and the magnet coincide with the fastening holes of the moving connector plate provided in the PCB module,
A circuit breaker characterized in that it is fixed to the fastening hole of the seating end by a bolt. According to claim 11,
The PCB module,
A circuit breaker comprising a moving connector plate electrically contacting the movable module. According to claim 16,
The PCB module,
A wire having one end connected to the moving connector plate and the other end connected to an electrode, and an output terminal connecting the electrode and an external wire,
The circuit breaker, characterized in that the wire passes through the ZCT. According to claim 17,
The PCB module,
A circuit breaker including a first PCB mounting the ZCT and a second PCB processing a detection result of an arc detector, wherein the first PCB further includes a pin core that is magnetized and operated according to the ZCT or the detection result of the arc detector. . According to claim 18,
The PCB module,
A module case accommodating the first PCB, the second PCB, and the arc detector,
The circuit breaker, characterized in that the module case is coupled to the lower case. According to claim 11,
The instantaneous operation module,
a handle rotatably coupled to the upper side of the side plate by a handle shaft and operated in an open/closed position according to a user's manipulation;
Armatures coupled by handle shafts on both sides of the side plate;
U pin coupled to the lower part of the handle to operate the lever; and
A circuit breaker including a trip bar rotatably coupled to one end of the side plate. delete

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