A molded case circuit breaker and drawer device

Abstract

The application provides a plastic shell circuit breaker and a drawer device, which comprises a circuit breaker, a body mounting group, a drawer group and an electrical connection group. The circuit breaker is mounted in the body mounting group. The electrical connection group is mounted in the drawer group. A terminal moving head is mounted on the body mounting group. A terminal static head is mounted on the drawer group. A handle is arranged on the drawer group. The handle drives the circuit breaker to move in the drawer group. The accurate mounting of the plastic shell circuit breaker is realized by a U-shaped body mounting rack and a body mounting sheet with a mounting hook. Through the linkage cooperation of the control rod of the drawer group, the transmission rod and the driving rod of the body mounting group and the traction rod of the circuit breaker, the plastic shell circuit breaker can be closed in the isolation position, can be normally debugged, cannot be closed in the tripping position, can be safely connected, can be closed in the connection position and can normally work.

Description

Technical Field

[0001] This invention relates to molded case circuit breakers, and more particularly to drawer assemblies for molded case circuit breakers. Background Technology

[0002] In low-voltage power distribution equipment, drawer-type devices are often used to enable rapid connection and deployment of components such as circuit breakers to power lines, or to quickly disconnect and isolate them during maintenance. For rapid deployment of molded case circuit breakers (MCCBs), to save effort, the main mounting assembly can be installed first, and then the entire assembly placed in the drawer-type device. The extended handle in the drawer-type device is used to press the MCCB into or pull it out, achieving electrical connection or isolation between the MCCB and the drawer-type device. Existing main mounting assemblies typically consist of multiple sheet metal parts snapped together on both sides of the circuit breaker. These assemblies have a guide structure; the extended handle moves the MCCB by pushing the guide structure. During power distribution deployment, the drawer-type device may be energized because it is pre-connected to the power distribution network. In this energized state, if the MCCB is in the closed position, it will be electrically connected or disconnected from the drawer-type device, constituting live operation and potentially leading to safety accidents. Therefore, an external tripping device is installed on the molded case circuit breaker. This means that the molded case circuit breaker is in a state where it cannot be closed until it is fully connected to the drawer assembly; it can only be closed after the connection is complete. In other words, once the external tripping device is installed, the molded case circuit breaker cannot be closed, making normal commissioning impossible outside the drawer assembly. Furthermore, the installation method involving multiple sheet metal parts can easily lead to asymmetry in the left and right sheet metal positions, potentially causing misalignment between the molded case circuit breaker and the drawer assembly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a molded case circuit breaker and a drawer device that are simple and accurate to assemble, and that can still be closed and normally debugged outside the drawer device.

[0004] To achieve the above objectives, the present invention provides a molded case circuit breaker and a drawer assembly, comprising a circuit breaker, a body mounting assembly, a drawer assembly, and an electrical connection assembly. The circuit breaker is mounted within the body mounting assembly. The electrical connection assembly is mounted within the drawer assembly. A moving terminal is mounted on the body mounting assembly. A stationary terminal is mounted on the drawer assembly. A handle is provided on the drawer assembly.

[0005] The handle drives the circuit breaker to move within the drawer assembly, and the relative position of the circuit breaker and the drawer assembly includes:

[0006] In the isolated position, the circuit breaker is disconnected from the electrical connection group on the drawer assembly, the circuit breaker can be closed, and the moving terminal is separated from the stationary terminal.

[0007] In the tripped position, the circuit breaker cannot be closed, and the moving terminal and the stationary terminal are connected and conductive.

[0008] In the connection position, the circuit breaker is connected to the electrical connection group on the drawer assembly, and the circuit breaker can be closed. The moving terminal and the stationary terminal are connected.

[0009] Specifically, the main body mounting assembly is equipped with a U-shaped main body mounting bracket and a main body mounting plate with mounting hooks; the main body mounting assembly is fixed to the circuit breaker via the main body mounting plate. A control rod is fixed on the drawer assembly, and a transmission rod is rotatably mounted on the main body mounting assembly. A traction rod is rotatably mounted on the circuit breaker. The control rod drives the transmission rod to rotate at different relative positions between the circuit breaker and the drawer assembly, the transmission rod drives the drive rod to move, and the drive rod pushes the traction rod, thereby enabling or disabling the circuit breaker to close.

[0010] Furthermore, the transmission rod is provided with a shaft hole, through which it is rotatably mounted on the main body mounting assembly. A drive rod shaft is provided on one side of the transmission rod, and a control rod shaft is provided on the other side.

[0011] Furthermore, a control plate is provided on the side of the control lever facing the control lever shaft, and the control plate has an isolation surface, a tripping surface, and a connecting surface arranged sequentially from top to bottom. The control plate is coupled to the control lever shaft.

[0012] Furthermore, a U-shaped drive groove is provided at one end of the drive rod facing the drive rod shaft, and the drive rod shaft is placed in the drive groove. A traction edge is provided at the other end of the drive rod, and the traction edge faces the traction rod. An isolation edge is provided on the side of the drive rod facing the traction rod.

[0013] Furthermore, a rotating shoulder is provided on the traction rod, and the traction rod is rotatably mounted inside the circuit breaker via the rotating shoulder. A traction protrusion is provided on the traction rod near the drive rod.

[0014] Furthermore, a mounting plate is provided at the end of the mounting plate facing the circuit breaker, and the mounting plate is provided with mounting holes for fastening the circuit breaker. The mounting plate is bent into a mounting hook facing the mounting bracket.

[0015] Furthermore, the mounting bracket is U-shaped, with side plates on both sides and a base plate on the bottom. The side plates have mounting grooves through which the mounting hooks can pass.

[0016] Furthermore, the circuit breaker is provided with a body hole, which is aligned and coupled with the mounting hole.

[0017] The technical advantage of this invention lies in achieving accurate installation of the molded case circuit breaker through a U-shaped mounting bracket and a mounting plate with mounting hooks, effectively suppressing installation deviations caused by sheet metal fastening in traditional techniques. Through the coordinated operation of the control lever of the drawer assembly, the transmission and drive levers of the mounting assembly, and the traction lever of the circuit breaker, the invention enables the molded case circuit breaker to be closed and undergo normal commissioning in the isolated position, closed and safely electrically connected in the tripped position, and closed and functioning normally in the connected position. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a molded case circuit breaker and drawer device involved in this invention.

[0019] Figure 2 This is a schematic diagram of the circuit breaker body installation structure of a molded case circuit breaker and drawer device involved in this invention.

[0020] Figure 3 This is an exploded view of the main body mounting assembly of a molded case circuit breaker and drawer device according to the present invention.

[0021] Figure 4 This is a schematic diagram of the drawer assembly of a molded case circuit breaker and drawer device according to the present invention.

[0022] Figure 5 This is an exploded view of the drawer assembly of a molded case circuit breaker and drawer device according to the present invention.

[0023] Figure 6 This is a schematic diagram of the control lever of a molded case circuit breaker and drawer device involved in this invention.

[0024] Figure 7 This is a schematic diagram of the traction rod of a molded case circuit breaker and drawer device involved in this invention.

[0025] Figure 8 This is a schematic diagram of the drive rod of a molded case circuit breaker and drawer device according to the present invention.

[0026] Figure 9 This is a schematic diagram of the transmission rod of a molded case circuit breaker and drawer device involved in this invention.

[0027] Figure 10 This is a schematic diagram of the isolated state of a molded case circuit breaker and drawer device involved in this invention.

[0028] Figure 11 This is a schematic diagram of the tripping state structure of a molded case circuit breaker and drawer device involved in this invention.

[0029] Figure 12 This is a structural schematic diagram of the connection state of a molded case circuit breaker and drawer device involved in this invention.

[0030] Figure 13 This is a schematic diagram of the separated state of the moving and stationary terminals of a molded case circuit breaker and drawer assembly according to the present invention.

[0031] Figure 14 This is a schematic diagram of the connected state of the moving and stationary terminals of a molded case circuit breaker and drawer assembly according to the present invention.

[0032] Figure 15 This is a schematic diagram of the moving contact of a molded case circuit breaker and drawer device according to the present invention.

[0033] Figure 16 This is a schematic diagram of the structure of the stationary contact piece of a molded case circuit breaker and drawer assembly involved in this invention.

[0034] Figure 17 This is a schematic diagram illustrating the connection between the moving and stationary contacts of a molded case circuit breaker and drawer assembly according to the present invention. Detailed Implementation

[0035] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0036] Marker explanation:

[0037] Circuit breaker 1, body hole 101,

[0038] 102 traction rod, 1021 rotating shoulder, 1022 traction lug.

[0039] Main body installation group 2,

[0040] The main body mounting bracket 201, mounting bracket side plate 2011, mounting bracket base plate 2012, mounting groove 2013, drive rod groove 2014, transmission rod hole 2015, guide post hole 2016, and terminal hole 2017 are all included.

[0041] Body mounting plate 202, mounting plate 2021, mounting hole 2022, transition plate 2023, mounting hook 2024.

[0042] Transmission rod 203, shaft hole 2031, drive rod shaft 2032, control rod shaft 2033.

[0043] Drive rod 204, drive groove 2041, traction edge 2042, isolation edge 2043.

[0044] Guide column 205, rotating shaft 207,

[0045] Terminal moving head 206,

[0046] Moving contact 2061, moving contact wiring terminal 20611, moving contact plug 20612, moving contact conductive section 20613, moving contact positioning hook 20614.

[0047] Moving head 2062, moving head fixed hole 2063, moving head partition 2064.

[0048] Drawer set 3,

[0049] Drawer shelf 301, drawer shelf side plate 3011, handle hole 3012, knob hole 3013, terminal slot 3014, control rod hole 3015, drawer shelf base plate 3016, guide slot 3017, mounting hole 3018, fixing hole 3019.

[0050] Handle 302, rotating hole 3021, drive hook 3022, drive handle 3023, grip 3024, drive hook 3025, locking slot 3026, unlocking knob 303.

[0051] Terminal static head 304,

[0052] 3041 stationary contact piece, 30411 stationary contact piece wiring terminal, 30412 stationary contact piece conductive head, 30413 stationary contact piece elastic segment.

[0053] Stationary connector 3042, stationary head fixed hole 3043, stationary head partition 3044, external connector 3045.

[0054] Control lever 305, control lever seat 3051, control plate 3052, control lever fixed hole 3053, isolation surface 3054, tripping surface 3055, connecting surface 3056, electrical connection group 4.

[0055] Insulating base 401, terminal block 402, electrical connection port 403, mounting pin 404, fixing pin 405.

[0056] Figure 1 As shown, this embodiment of a molded case circuit breaker and drawer assembly includes a circuit breaker 1, a body mounting assembly 2, a drawer assembly 3, and an electrical connection assembly 4. The circuit breaker 1 is installed within the body mounting assembly 2. The electrical connection assembly 4 is installed within the drawer assembly 3.

[0057] Figure 2As shown, the main body mounting assembly 2 includes a main body mounting bracket 201, a main body mounting plate 202, a transmission rod 203, a drive rod 204, a guide post 205, a terminal moving head 206, and a rotating shaft 207. The circuit breaker 1 is provided with a main body hole 101.

[0058] in, Figure 3 As shown, the mounting bracket 201 is a U-shaped structure formed by bending. The two sides of the U-shape are parallel mounting bracket side plates 2011, and the bottom of the U-shape is a mounting bracket base plate 2012. A mounting groove 2013 is provided on the upper part of the mounting bracket side plate 2011 for mounting the mounting piece 202. A guide post hole 2016 is provided in the middle of the mounting bracket side plate 2011, and the guide post 205 is fixed to the mounting bracket 201 through the guide post hole 2016. The mounting bracket side plate 2011 also has a terminal hole 2017, and the terminal moving head 206 is fixed to the mounting bracket 201 through the terminal hole 2017. A transmission rod hole 2015 is bent out on the mounting bracket base plate 2012, and the mounting transmission rod 203 is rotatably mounted to the mounting bracket 201 through the transmission rod hole 2015 via a rotating shaft 207. A drive rod groove 2014 is also provided on the mounting bracket base plate 2012. The drive rod groove 2014 is a through hole, through which the drive rod 204 can pass.

[0059] Figure 4 As shown, a mounting plate 2021 is provided at one end of the main body mounting piece 202 facing the circuit breaker 1. The mounting plate 2021 has mounting holes 2022 for fastening the circuit breaker 1. The mounting holes 2022 are aligned and coupled with the main body hole 101. The main body mounting piece 202 is bent towards the main body mounting bracket 201 to form a mounting hook 2024. The mounting hook 2024 can pass through the mounting groove 2013. The mounting plate 2021 and the mounting hook 2024 are smoothly transitioned by a transition plate 2023. The mounting hook 2024 passes through the mounting groove 2013 and engages with the circuit breaker 1. The mounting holes 2022 are aligned with the main body hole 101, and screws can pass through the mounting holes 2022 and the main body hole 101 to achieve the fastening of the circuit breaker 1 and the main body mounting assembly 2. Unlike traditional multi-sheet metal structures, this design uses a one-piece molded U-shaped mounting bracket 201 and a mounting plate 202 with mounting hooks to ensure accurate installation of the circuit breaker 1. This effectively suppresses operational safety hazards caused by connection deviations between the circuit breaker 1 and the drawer assembly 3 due to installation deviations or non-parallelism of the sheet metal on the left and right sides.

[0060] Figure 4As shown, the electrical connection group 4 is divided into upper and lower groups. Each electrical connection group 4 includes an insulating base 401, a terminal block 402, mounting pins 404, and fixing pins 405. The terminal block 402 extends out and is positioned below the insulating base 401 for connecting the drawer device to the power distribution network. An electrical connection port 403 is provided above the insulating base 401 for connecting the electrical connection group 4 to the circuit breaker 1. The number of terminal blocks 402 and electrical connection ports 403 is the same as the number of poles of the circuit breaker 1. Figure 4 The circuit breaker 1 shown in this embodiment is a 3-pole circuit breaker, therefore the number of terminal blocks 402 and electrical connection ports 403 is also 3. The electrical connection group 4 is provided with mounting pins 404 and fixing pins 405 on the side near the main body mounting bracket 201. The mounting pins 404 are used for mounting and fixing the drawer assembly. The electrical connection group 4 is mounted and secured to the main body mounting bracket 201 via the fixing pins 405.

[0061] Figure 4 and Figure 5 As shown, the drawer assembly 3 includes a drawer frame 301, a handle 302, an unlocking knob 303, a terminal block 304, and a control lever 305.

[0062] in, Figure 5 As shown, the drawer frame 301 is a U-shaped structure formed by bending. The two sides of the U-shape are parallel drawer side plates 3011, and the bottom of the U-shape is a drawer base plate 3016. A handle hole 3012 is provided on the drawer side plate 3011, and a handle 302 is rotatably mounted to the drawer frame 301 through the handle hole 3012. A knob hole 3013 is provided on the drawer side plate 3011, and an unlocking knob 303 is rotatably mounted to the drawer frame 301. A terminal slot 3014 is also provided on the drawer side plate 3011, and a terminal pin 304 passes through the terminal slot 3014 and is fixedly mounted to the drawer frame 301. The drawer side plate 3011 also has a long, narrow guide groove 3017 in the middle. The guide post 205 can pass through the guide groove 3017. The circuit breaker 1 is guided by the guide post 205 in the guide groove 3017, enabling the circuit breaker 1 to move smoothly in the drawer assembly. The drawer bottom plate 3016 has a control rod hole 3015 near the transmission rod hole 2015. The control rod 305 is fixed to the drawer frame 301 through the control rod hole 3015. The drawer bottom plate 3016 has an assembly hole 3018 and a fixing hole 3019 near the electrical connection group 4. The electrical connection group 4 is installed and fastened to the drawer frame 301 through the fixing hole 3019. The assembly nail 404 passes through the assembly hole 3018 for installing and fixing the drawer assembly.

[0063] Figure 5As shown, the handle 302 is provided with a rotating hole 3021, which is aligned with the handle hole 3012. The handle 302 is rotatably mounted on the drawer frame 301 via the rotating hole 3021. An inlet drive hook 3022 and an outlet drive hook 3025 are provided on the handle 302 near the guide groove 3017. The inlet drive hook 3022 and the outlet drive hook 3025 drive the movement of the circuit breaker 1 in the drawer assembly by pushing the guide post 205 to move in the guide groove 3017. A locking groove 3026 is provided on the side of the handle 302 near the drawer side plate 3011. The locking groove 3026 cooperates with the unlocking knob 303 to lock the circuit breaker 1 in the connected and tripped positions. A drive handle 3023 extends from the handle 302 away from the rotating hole 3021. A handle 3024 is installed at the end of the drive handle 3023 as a force-saving lever for effortless operation of moving the circuit breaker 1 in the drawer assembly.

[0064] Figure 6 As shown, a control plate 3052 is provided on the side of the control lever 305 facing the control lever shaft 2033. The control plate 3052 has an isolation surface 3054, a release surface 3055, and a connecting surface 3056 arranged sequentially from top to bottom. A control lever seat 3051 is provided on the control lever 305 facing the drawer base plate 3016. A control lever fixing hole 3053 is provided on the control lever seat 3051. The control lever 305 is fixed to the drawer frame 301 through the control lever fixing hole 3053.

[0065] Figure 7 As shown, the traction rod 102 is provided with a rotating shoulder 1021, and the traction rod 102 is rotatably mounted in the circuit breaker 1 via the rotating shoulder 1021. The traction rod 102 is also provided with a traction protrusion 1022.

[0066] Figure 8 As shown, the drive rod 204 extends into the circuit breaker 1, and a traction edge 2042 is provided at one end of the drive rod 204 facing the traction rod 102. A U-shaped drive groove 2041 is provided at the other end of the drive rod 204. The traction edge 2042 faces the traction rod 102. An isolation edge 2043 is provided on the side of the drive rod 204 facing the traction rod 102.

[0067] Figure 9As shown, the transmission rod 203 is provided with a shaft hole 2031, through which the rotating shaft 207 can pass. The transmission rod 203 is rotatably mounted on the main body mounting assembly 2 through the shaft hole 2031. A drive rod shaft 2032 is provided on the side of the transmission rod 203 facing the drive rod 204. The drive rod shaft 2032 is placed in the drive groove 2041 and is used to drive the movement of the drive rod 204. A control rod shaft 2033 is provided on the side of the transmission rod 203 near the control rod 305. The control plate 3052 is coupled to the control rod shaft 2033. The control plate 3052 drives the transmission rod 203 to rotate, thereby driving the movement of the drive rod 204.

[0068] Figure 10 , Figure 11 , Figure 12 As shown, the different relative positions between the circuit breaker 1 and the drawer assembly 3 cause the control lever 305 to drive the transmission rod 203 to rotate. The transmission rod 203 drives the drive rod 204 to move, and the drive rod 204 pushes the traction rod 102, thereby allowing the circuit breaker 1 to be closed or not to be closed. Figure 10 The circuit breaker 1 and the drawer assembly 3 are in an isolated position. The control rod shaft 2033 is located on the isolation surface 3054. The drive rod 204 is driven by the drive rod shaft 2032. The traction side 2042 faces the traction protrusion 1022. The circuit breaker 1 can be closed and the circuit breaker 1 can be adjusted normally. Figure 11 The circuit breaker 1 and the drawer assembly 3 are in an isolated position. The control rod shaft 2033 is located on the tripping surface 3055. The control rod 305 drives the transmission rod 203 to rotate, thereby pushing the drive rod 204 to move upward. The isolation edge 2043 pushes the traction protrusion 1022, causing the traction rod 102 to rotate, and the circuit breaker 1 cannot be closed. Figure 12 When the circuit breaker 1 is in the connected position with the drawer assembly 3, the control rod shaft 2033 is located on the connecting surface 3056, the transmission rod 203 returns to the lower position, the isolation edge 2043 disengages from the traction protrusion 1022, and the circuit breaker 1 can be closed. This allows the handle 302 to drive the circuit breaker 1 to move within the drawer assembly 3. Through the coordinated operation of the control rod 305 of the drawer assembly 3, the transmission rod 203 and drive rod 204 of the main body mounting assembly 2, and the traction rod 102 of the circuit breaker 1, the molded case circuit breaker can be closed and normally tested in the isolated position, cannot be closed and is safely electrically connected in the tripped position, and can be closed and operate normally in the connected position.

[0069] Figure 13 and Figure 14As shown, the terminal moving head 206 has a plurality of moving connectors 2062 facing the terminal stationary head 304, and moving contact pieces 2061 are mounted on the moving connectors 2062. Moving head partitions 2064 are provided between the moving contact pieces 2061 inside the terminal moving head 206, and the moving head partitions 2064 insulate the moving contact pieces 2061 apart. The terminal moving head 206 also has a moving head fixed hole 2063, through which the terminal moving head 206 is fixed to the outside of the mounting bracket side plate 2011. The terminal stationary head 304 has a stationary connector 3042 facing the terminal moving head 206, and stationary contact pieces 3041 are mounted on the stationary connectors 3042. Stationary head partitions 3044 are provided between the stationary contact pieces 3041 inside the terminal stationary head 304, and the stationary head partitions 3044 insulate the stationary contact pieces 3041 apart. The other end of the terminal stationary head 304 is provided with an external end 3045 facing the drawer side plate 3011. The external end 3045 can pass through the terminal slot 3014. The terminal stationary head 304 is also provided with a stationary head fixing hole 3043. The external end 3045 of the terminal stationary head 304 passes through the terminal slot 3014 and is fixed to the inside of the drawer side plate 3011 through the stationary head fixing hole 3043.

[0070] Figure 15 As shown, the moving contact 2061 has a moving contact plug 20612 facing the stationary terminal 304 for connection with the stationary contact 3041. The moving contact plug 20612 is bent to form a moving contact positioning hook 20614, which engages with the moving contact 2062 for positioning the moving contact 2061. The other end of the moving contact 2061 has a moving contact connection terminal 20611 for connection with accessories of the molded case circuit breaker. The moving contact plug 20612 and the moving contact connection terminal 20611 are smoothly transitioned by a moving contact conductive section 20613.

[0071] Figure 16 As shown, the stationary contact 3041 has a stationary contact conduction head 30412 facing the moving terminal 206 for connection with the moving contact 2061. The other end of the stationary contact 3041 has a stationary contact connection terminal 30411 for external electrical wiring. The stationary contact conduction head 30412 and the stationary contact connection terminal 30411 are smoothly connected via a stationary contact elastic segment 30413.

[0072] When the circuit breaker 1 and the drawer assembly 3 are in the isolated position, the moving terminal 206 and the stationary terminal 304 are separated, and the moving contact 2061 and the stationary contact 3041 are not conductive. Figure 17As shown, when the circuit breaker 1 and the drawer assembly 3 are in the tripped position, the stationary contact head 30412 first contacts and conducts with the moving contact plug 20612. Then, the stationary elastic segment 30413 undergoes elastic deformation under the push of the moving contact 2061. The stationary contact head 30412 and the moving contact segment 20613 remain in contact and conduct until the circuit breaker 1 and the drawer assembly 3 reach the connection position.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A molded case circuit breaker and drawer assembly, comprising a circuit breaker (1), a body mounting assembly (2), a drawer assembly (3), and an electrical connection assembly (4); the circuit breaker (1) is installed in the body mounting assembly (2); the electrical connection assembly (4) is installed in the drawer assembly (3); a moving terminal (206) is installed on the body mounting assembly (2); a stationary terminal (304) is installed on the drawer assembly (3); and a handle (302) is provided on the drawer assembly (3). The handle (302) drives the circuit breaker (1) to move within the drawer assembly (3), and the relative positions between the circuit breaker (1) and the drawer assembly (3) include: In the isolation position, the electrical connection group (4) on the circuit breaker (1) and the drawer group (3) is separated, the circuit breaker (1) can be closed, and the moving terminal (206) and the stationary terminal (304) are separated; In the tripped position, the circuit breaker (1) cannot be closed, and the moving terminal (206) and the stationary terminal (304) are connected and conducting. In the connection position, the electrical connection group (4) on the circuit breaker (1) and the drawer group (3) is connected and conductive, the circuit breaker (1) can be closed, and the moving terminal (206) and the stationary terminal (304) are connected and conductive. The feature is that the body mounting assembly (2) is provided with a body mounting bracket (201) bent into a U-shape and a body mounting piece (202) with a mounting hook (2024); the body mounting assembly (2) is installed and fixed to the circuit breaker (1) through the body mounting piece (202); A control lever (305) is fixed on the drawer assembly (3); a transmission lever (203) is rotatably mounted on the main body mounting assembly (2); and a traction lever (102) is rotatably mounted on the circuit breaker (1). The control lever (305) drives the transmission rod (203) to rotate at different relative positions between the circuit breaker (1) and the drawer assembly (3). The transmission rod (203) drives the drive rod (204) to move. The drive rod (204) pushes the traction rod (102), thereby allowing the circuit breaker (1) to be closed or not to be closed.

2. The molded case circuit breaker and drawer device according to claim 1, characterized in that, The transmission rod (203) is provided with a shaft hole (2031), and the transmission rod (203) is rotatably mounted on the main body mounting assembly (2) through the shaft hole (2031); A drive shaft (2032) is provided on one side of the transmission rod (203); A control rod shaft (2033) is provided on the other side of the transmission rod (203).

3. A molded case circuit breaker and drawer assembly according to claim 1, characterized in that, The control lever (305) has a control plate (3052) on the side facing the control lever shaft (2033). The control plate (3052) has an isolation surface (3054), a tripping surface (3055), and a connecting surface (3056) arranged sequentially from top to bottom. The control plate (3052) is coupled to the control rod shaft (2033).

4. A molded case circuit breaker and drawer assembly according to claim 1, characterized in that, The drive rod (204) is provided with a U-shaped drive groove (2041) at one end facing the drive rod shaft (2032), and the drive rod shaft (2032) is placed in the drive groove (2041); The other end of the drive rod (204) is provided with a traction edge (2042), which faces the traction rod (102); The drive rod (204) is provided with an isolation side (2043) on the side facing the traction rod (102).

5. A molded case circuit breaker and drawer assembly according to claim 1, characterized in that, A rotating shoulder (1021) is provided on the traction rod (102), and the traction rod (102) is rotatably installed in the circuit breaker (1) via the rotating shoulder (1021); The traction rod (102) is provided with a traction protrusion (1022) near the drive rod (204).

6. A molded case circuit breaker and drawer assembly according to claim 1, characterized in that, The mounting plate (202) of the main body is provided with a mounting plate (2021) facing the circuit breaker (1), and the mounting plate (2021) is provided with mounting holes (2022) for mounting and fastening the circuit breaker (1); The mounting plate (202) is bent toward the mounting bracket (201) to form a mounting hook (2024).

7. A molded case circuit breaker and drawer assembly according to claim 1, characterized in that, The main body mounting frame (201) is a U-shaped bend, with the two sides of the U-shape being mounting frame side plates (2011) and the bottom of the U-shape being a mounting frame bottom plate (2012); The mounting bracket side plate (2011) is provided with a mounting groove (2013), and the mounting hook (2024) can pass through the mounting groove (2013).

8. A molded case circuit breaker and drawer assembly according to claim 1, characterized in that, The circuit breaker (1) is provided with a body hole (101), which is aligned and coupled with the mounting hole (2022).

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