A protector integrating a fuse and circuit breaker module

Abstract

This invention discloses a protector integrating a fuse and a circuit breaker module. A pair of connecting seats are formed on the end face of the circuit breaker housing near the fuse housing; a pair of connecting slots for horizontal insertion of the connecting seats are formed on the end face of the fuse housing near the circuit breaker; a pair of connecting screws are vertically inserted into the fuse housing; the connecting screws are screwed onto the connecting seats inserted into the corresponding connecting slots; a circuit breaker plug contact extends from the lower end of the end face of the circuit breaker housing near the fuse housing; a contact groove for horizontal insertion of the circuit breaker plug contact is formed at the lower end of the end face of the fuse housing near the circuit breaker; a strip-shaped contact is provided at the lower inner end of the fuse housing; an integrated connecting screw is provided on the strip-shaped contact; the strip-shaped contact and the circuit breaker plug contact are connected by the integrated connecting screw. This invention achieves the integration of the fuse and circuit breaker without additional wiring layout, overcoming the shortcomings of the fuse and circuit breaker as independent working modules.

Description

Technical Field

[0001] This invention relates to the field of circuit protectors, and more particularly to a protector that integrates a fuse and a circuit breaker module. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting its fusible element when the current exceeds a specified value. Fuses have a high breaking capacity (some specifications can reach 200kA), strong current limiting capability, and low allowable energy. However, a fuse needs to be replaced with a new fusible element after it blows to function properly.

[0003] A circuit breaker is a switching device capable of closing, carrying, and interrupting circuits under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. After interrupting a fault current, a circuit breaker generally can be used again without replacing any parts. However, its breaking capacity is not strong, its breaking time is long, and its current-limiting capacity is weak.

[0004] Regarding the aforementioned technologies, the inventors believe that the following problems exist: Circuit breakers and fuses are generally used as two independent working modules, and even when they are installed on the circuit, they are arranged separately, requiring additional lines for connection. This is not conducive to overcoming the inherent shortcomings of fuses and circuit breakers, and is also not conducive to circuit layout. Summary of the Invention

[0005] To address the technical problem that circuit breakers and fuses cannot overcome their own shortcomings and are not conducive to line layout when used as two independent working modules, this invention provides a protector that integrates a fuse and a circuit breaker module.

[0006] The present invention provides a protector that integrates a fuse and a circuit breaker module, employing the following technical solution: A protector integrating a fuse and a circuit breaker module includes a fuse and a circuit breaker; the circuit breaker includes a circuit breaker housing; the fuse includes a fuse housing and a fuse carrier; the fuse carrier is vertically inserted into the fuse housing from top to bottom; a pair of connecting seats are formed on the end face of the circuit breaker housing near the fuse housing; a pair of connecting slots for horizontal insertion of the connecting seats are formed on the end face of the fuse housing near the circuit breaker; a pair of connecting screws are vertically inserted into the fuse housing; the connecting screws are screwed into the corresponding side of the connecting slot. On the connecting seat within the connecting slot; a circuit breaker plug contact extends from the lower end of the end face of the circuit breaker housing near the fuse housing; a contact groove is formed at the lower end of the end face of the fuse housing near the circuit breaker for horizontal insertion of the circuit breaker plug contact; a strip-shaped contact is provided at the lower end of the interior of the fuse housing; an integrated connecting screw is provided on the strip-shaped contact; a connection operation hole is formed at the lower end of the fuse housing for vertical passage of the integrated connecting screw; the strip-shaped contact and the circuit breaker plug contact are connected by the integrated connecting screw.

[0007] By adopting the above technical solution, a pair of connection sockets of the circuit breaker are inserted into a pair of connection slots of the fuse, and then a pair of connection screws are screwed through the fuse housing and onto the corresponding connection sockets. This connects the circuit breaker and the fuse together. Then, the integrated connection screw passes through the connection operation hole to connect the strip contact and the circuit breaker plug contact to complete the circuit connection between the circuit breaker and the fuse. This eliminates the need for additional wiring layout. When the line is overloaded, the circuit breaker will activate, and after the problem is resolved, it can be restored simply by closing the circuit breaker without replacing the fuse element. When there is a short circuit, the fuse will activate, and the fuse element will melt quickly with a short breaking time. At the same time, it has strong breaking capacity, strong current limiting capacity, and low allowable energy, overcoming the shortcomings of the two as independent working modules.

[0008] Optionally, a terminal block is provided inside the fuse housing at the end away from the circuit breaker; a resiliently configured load contact is provided at the end of the terminal block near the circuit breaker; a clearance groove is formed on the side wall of the fuse carrier; an upper contact of the fuse carrier is provided in the clearance groove; the upper contact of the fuse carrier is used to abut against the load contact; a stationary contact is provided at the upper end of the strip contact; a lower contact of the fuse carrier is provided at the bottom of the fuse carrier; the lower contact of the fuse carrier is used to abut against the stationary contact.

[0009] By adopting the above technical solution, the fuse connects the circuit by having the lower contact of the fuse carrier at the bottom contact with the stationary contact and the upper contact of the fuse carrier on the side wall contact with the load contact on the terminal block.

[0010] Optionally, the fuse housing has an interlocking mechanism inside at one end near the circuit breaker; the circuit breaker also includes a reset lever swinging on the upper end of the circuit breaker housing and a reset lifting seat vertically and elastically movable; the reset lifting seat and the reset lever are linked; through the linkage structure, the reset lifting seat swings to drive the reset lifting seat to rise and fall; a pressure block is formed on the upper end face of the reset lifting seat near the fuse; the pressure block extends out of the circuit breaker housing and a first moving groove is formed on the circuit breaker housing for the pressure block to move vertically; a second moving groove is formed on the end face of the fuse housing near the circuit breaker housing for the pressure block to move vertically; the interlocking mechanism is located between the pressure block and the fuse carrier; when the fuse carrier is not installed in place, the interlocking mechanism restricts the pressure block from moving downward.

[0011] By adopting the above technical solution, the interlocking mechanism can ensure that the circuit breaker's reset lever cannot be reset when the fuse carrier is not installed in place, thus ensuring that the fuse carrier is installed in place and preventing mistaken installation.

[0012] Optionally, the sidewall of the molten material is formed with a protrusion, and the lower end is formed with a sliding groove; the sliding groove consists of a horizontal groove and a pair of vertical grooves; the pair of vertical grooves are provided with openings at the lower sides of both ends of the horizontal groove and at the lower end of one of the vertical grooves; the interlocking mechanism includes a horizontally swinging limit block and a vertically elastically movable vertical limit seat; the vertical limit seat includes a vertically movable seat; the horizontal limit block is located between the vertically movable seat and the molten material; the upper end of the vertically movable seat is formed with an insertion limit groove for horizontal insertion of the horizontal limit block; the end of the vertically movable seat away from the molten material is formed with a driving abutment block, and the end near the molten material is formed with a horizontal extension seat; the end of the horizontal extension seat away from the vertically movable seat is formed with a cylindrical sliding column that mates with the sliding groove; the pressure block abuts against the upper end of the driving abutment block; the protrusion is used to drive the horizontal limit block to swing horizontally.

[0013] By adopting the above technical solution, when the fuse carrier is not installed in place, the horizontal limiting block is inserted into the insertion limiting groove of the vertical moving seat. At this time, the vertical limiting seat cannot move downward, and thus the pressure block cannot move downward either. When the fuse carrier is vertically inserted into the fuse housing from top to bottom, the sliding column is inserted into the vertical groove at the lower end of the sliding groove. Then, the fuse carrier is rotated. During this process, the sliding column moves along the horizontal groove of the sliding groove, and the protrusion of the fuse carrier drives the horizontal limiting block to swing horizontally, thus disengaging the horizontal limiting block. The vertical moving seat has an insertion limiting groove, so that the vertical limiting seat is in a free state in the vertical direction and the load contact abuts against the contact on the fusible link. Then, the pressure block moves down and drives the vertical limiting seat to move down through the driving abutment block. In this way, the sliding column moves vertically along another vertical groove of the sliding groove until the sliding column abuts against the bottom of this vertical groove of the sliding groove. This completes the locking of the fusible link. Through the above operation, when the circuit breaker is reset, the fusible link is installed in place and locked, ensuring the positional stability of the fusible link during operation.

[0014] Optionally, a connecting spring is fixed to the upper end face of the strip contact; the connecting spring is sleeved on the stationary contact and its outer diameter is smaller than the bottom diameter of the molten metal carrier.

[0015] By adopting the above technical solution, the upper end of the connecting spring abuts against the bottom of the molten metal carrier. This prevents the molten metal carrier from colliding with the stationary contact during installation, and allows the molten metal carrier to automatically extend upwards during disassembly, making it easy to remove.

[0016] Optionally, a connection signal assembly is provided inside the fuse housing; the connection signal assembly includes a circuit board fixed to the upper part of the fuse housing; a connection signal lamp bead is connected to the upper surface of the circuit board; the upper end of the fuse housing is formed with light-transmitting holes with upper and lower openings that cooperate with the connection signal lamp bead; a first wire and a second wire are connected to the circuit board; the other end of the first wire is connected to the terminal block; the other end of the second wire is connected to the strip contact.

[0017] By adopting the above technical solution, when the fuse carrier is installed in place, the fuse carrier, terminal block, first wire, circuit board, second wire, strip contact, and stationary contact form a circuit. When the connection indicator light is lit, it indicates that the fuse carrier is in place; when the connection indicator light is off, it indicates that the fuse carrier is not in place, making it easy to confirm whether the fuse carrier is installed in place.

[0018] Optionally, the strip contact has a vertically oriented through-hole with openings at both ends near the circuit breaker; a connecting nut coaxially arranged with the vertical through-hole is provided on the upper surface of the strip contact; the integrated connecting screw passes vertically through the vertical through-hole from bottom to top and is screwed onto the connecting nut; the circuit breaker plug contact has a U-shaped locking groove that mates with the integrated connecting screw at the end near the strip contact.

[0019] By adopting the above technical solution, during installation, as the circuit breaker plug contact head is horizontally inserted, the locking groove is fitted onto the integrated connecting screw. Then, by rotating the integrated connecting screw, the circuit breaker plug contact head can be made to fit tightly against the strip contact head, ensuring that the circuit of the fuse and the circuit breaker is connected.

[0020] Optionally, an elastic washer is fitted onto the integrated connecting screw; the circuit breaker plug contact is located between the elastic washer and the strip contact.

[0021] By adopting the above technical solution, the presence of the elastic washer can further ensure the connection stability of the circuit breaker plug contact and strip contact.

[0022] Optionally, the integrated connecting screw includes an integrated screw body; the head of the integrated screw body is injection molded with a plastic plug.

[0023] By adopting the above technical solution, the plastic plug can block the connection and operation hole of the fuse housing, thus preventing dust and leakage.

[0024] Optionally, the plastic block is formed with a plurality of axially distributed annular grooves; a sealing ring is provided in the groove.

[0025] By adopting the above technical solution, the sealing ring improves the sealing effect of the plastic plug.

[0026] In summary, the beneficial effects of the present invention are as follows: 1. The integration of fuses and circuit breakers can be achieved without additional wiring layout. When the line is overloaded, the circuit breaker will activate, and the problem can be resolved by simply closing the circuit breaker without replacing the fuse element. When there is a short circuit, the fuse will activate, and the fuse element will melt quickly with a short breaking time. At the same time, it has strong breaking capacity, strong current limiting capacity, and low allowable energy, overcoming the shortcomings of the two as independent working modules.

[0027] 2. Ensure the molten metal carrier is installed in place to prevent mistaken identification. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the fuse 10 and the circuit breaker 30 when they are separated according to the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the fuse 10 and the circuit breaker 30 when they are separated according to the present invention.

[0030] Figure 3 This is a front view of the structure when the fuse 10 and circuit breaker 30 of the present invention are connected and the front housing is removed.

[0031] Figure 4 This is a schematic diagram of the structure of the fusion carrier 20 of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of the fusion carrier 20 of the present invention.

[0033] Figure 6 This is a schematic diagram of the interlocking mechanism of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure of the communication signal component 40 of the present invention.

[0035] Figure 8 This is a front view of the structure of the strip contact 15 and the circuit breaker plug contact 35 when the integrated connecting screw 19 of the present invention is separated.

[0036] Figure 9 This is the invention Figure 8 A structural schematic diagram of the rotation angle of the cross section.

[0037] Explanation of reference numerals in the attached figures: 10. Fuse; 11. Fuse housing; 110. Contact slot; 1101. Fusible element insertion hole; 1102. Light-transmitting hole; 12. Fuse wiring screw; 13. Terminal block; 14. Load contact; 15. Strip contact; 150. Vertical through hole; 151. Connecting nut; 16. Stationary contact; 161. Connecting spring; 162. Stationary contact connecting screw; 17. Horizontal limit block; 171. Rotation center column; 172. Torsion spring; 18. Vertical limit seat; 181. Vertical moving seat; 1810. Insertion limit slot; 182. Drive abutment block; 183. Horizontal extension seat; 1831. Sliding column; 184. Return spring; 19. Integrated connecting screw; 191. Integrated screw body; 192. Plastic plug; 193. Sealing ring; 20. Fusion carrier; 200. Sliding groove; 201. Clearance groove; 21. Protrusion; 22. Contact on the fusion carrier; 30. Circuit breaker; 31. Circuit breaker housing; 32. Reset lever; 33. Connecting lever; 34. Reset lifting seat; 341. Pressure block; 35. Circuit breaker plug contact; 350. Snap-fit ​​groove; 36. Connecting seat; 40. Connecting signal component; 41. First wire; 42. Circuit board; 43. Connecting signal lamp bead; 44. Second wire. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-9 The present invention will be described in further detail below.

[0039] This application discloses a protector that integrates a fuse and a circuit breaker module, with reference to... Figures 1-3 It includes fuse 10 and circuit breaker 30; fuse 10 and circuit breaker 30 are integrated into one unit; in this way, when the line is overloaded, circuit breaker 30 will function, and after the problem is solved, it can be restored simply by closing the circuit breaker, without the need to replace the fuse element of fuse 10; when there is a short circuit, fuse 10 will function, the fuse element will melt quickly, the breaking time is short, and at the same time, it has strong breaking capacity, strong current limiting capacity, and low allowable energy, overcoming the shortcomings of the two as independent working modules.

[0040] refer to Figure 1 and Figure 2 The fuse 10 includes a fuse housing 11 and a fuse carrier 20. The fuse housing 11 consists of a pair of housings distributed front and back and connected together by screws. The bottom of the fuse housing 11 is formed with a connection operation hole with openings at the top and bottom, and the top is formed with a light-transmitting hole 1102 with openings at the top and bottom and a fuse carrier insertion hole 1101. The fuse carrier insertion hole 1101 is used for inserting the fuse carrier 20. The left end of the fuse housing 11 near the circuit breaker 30 is formed with a pair of connection slots, a second moving slot 1100 and a contact through slot 110.

[0041] refer to Figure 3 The fuse housing 11 has a terminal block 13 fixed to its right end, a strip contact 15 fixed to its bottom, and an interlocking mechanism on its upper left. The interlocking mechanism ensures that the fuse element 20 is in its normal operating position before the circuit breaker is closed. A fuse terminal screw 12 for connecting wires is installed on the terminal block 13. A resiliently shaped load contact 14 is formed on the left end of the terminal block 13. The end of the load contact 14 away from the terminal block 13 is annular. A stationary contact connecting screw 162 is inserted from bottom to top into the middle of the strip contact 15. The upper part of the stationary contact connecting screw 162... A stationary contact 16 is screwed to the end; a connecting spring 161 is sleeved on the stationary contact 16; the lower end of the connecting spring 161 is fixed to the upper end face of the strip contact 15; the left end of the strip contact 15 has a vertical through hole 150 with openings at the top and bottom; a connecting nut 151 coaxially arranged with the vertical through hole 150 is welded to the upper end face of the strip contact 15; an integrated connecting screw 19 is inserted from bottom to top in the connecting operation hole; an elastic washer 194 is sleeved on the screw of the integrated connecting screw 19 and passes vertically through the vertical through hole 150 and is screwed onto the connecting nut 151.

[0042] refer to Figure 8 , Figure 9The integrated connecting screw 19 includes an integrated screw body 191; the head of the integrated screw body 191 is injection molded with a plastic plug 192; the plastic plug 192 is formed with a plurality of axially distributed annular grooves; a sealing ring 193 is sleeved inside the groove.

[0043] refer to Figure 3 , Figure 6 The interlocking mechanism includes a horizontal limiting block 17 and a vertical limiting seat 18; a rotating central column 171 is formed in the middle of the horizontal limiting block 17; the rotating central column 171 is vertically rotatably disposed within the fuse housing 11; a torsion spring 172 is sleeved on the rotating central column 171; one end of the torsion spring 172 is fixed to the horizontal limiting block 17, and the other end is fixed to the fuse housing 11; the vertical limiting seat 18 includes a vertical moving seat 181; the vertical moving seat 181 is vertically movably disposed within the fuse housing 11; a vertically oriented reset spring 184 is disposed within the fuse housing 11. The lower end of the reset spring 184 abuts against the fuse housing 11, and the upper end abuts against the vertical moving seat 181. The upper end of the vertical moving seat 181 is formed with an insertion limiting groove 1810 for horizontal insertion of the horizontal limiting block 17. The end of the vertical moving seat 181 away from the horizontal limiting block 17 is formed with a drive abutment block 182, and the end near the fuse carrier 20 is formed with a horizontal extension seat 183. The end of the horizontal extension seat 183 away from the vertical moving seat 181 is formed with a cylindrical sliding column 1831. The drive abutment block 182 is vertically slidably disposed in the second moving groove 1100.

[0044] refer to Figures 1-5 The sidewall of the ferrule 20 has a relief groove 201 formed at one end and a protrusion 21 and a sliding groove 200 at the other end; the lower end of the ferrule 20 has a lower contact; the relief groove 201 has an upper contact 22; the upper contact 22 is used to abut against the load contact 14; the lower contact is used to abut against the stationary contact 16; the protrusion 21 is used to drive the horizontal limit block 17 to swing horizontally; the sliding groove 200 consists of a horizontal groove and a pair of vertical grooves; the pair of vertical grooves are provided on the lower sides of both ends of the horizontal groove, and one of the vertical grooves is open at the lower end; the sliding groove 200 is for the sliding column 1831 to slide.

[0045] refer to Figures 1-3The circuit breaker 30 includes a circuit breaker housing 31; the circuit breaker housing 31 is composed of a pair of housings distributed front and rear and connected by screws; a pair of connecting seats 36, a first moving groove and a circuit breaker plug contact 35 are formed on the right end face of the circuit breaker housing 31; the pair of connecting seats 36 are horizontally inserted into a pair of connecting slots; a pair of connecting screws are vertically inserted through the front end face of the fuse housing 11; the pair of connecting screws are screwed into the connecting seats 36; a U-shaped locking groove 350 is formed on the right end of the circuit breaker plug contact 35; the circuit breaker plug contact 35 is horizontally inserted into the contact through groove 110 and the locking groove 350 locks the screw of the integrated screw body 191; thus, the fuse 10 and the circuit breaker 30 can be integrated without additional wiring layout; the elastic washer 194 is located on the lower side of the circuit breaker plug contact 35; refer to Figures 1-3 The upper end of the circuit breaker housing 31 is provided with a swaying reset lever 32, and the right end of the interior is provided with a vertically elastically movable reset lifting seat 34. The reset lifting seat 34 and the reset lever 32 are provided with a linkage structure. The linkage structure is a connecting swing rod 33 hinged to the reset lever 32. The other end of the connecting swing rod 33 is hinged to the reset lifting seat 34. The reset lifting seat 34 is used for circuit breaker reset. The upper end of the right end face of the reset lifting seat 34 is formed with a pressure block 341. The pressure block 341 is vertically slidably disposed in the first moving groove. When the fuse 10 and the circuit breaker 30 are connected together, the right end of the pressure block 341 is vertically moved and disposed in the second moving groove 1100 and abuts against the upper end face of the drive abutment block 182.

[0046] refer to Figure 3 and Figure 7 To facilitate confirmation of whether the fuse carrier 20 is installed in place, a connection signal assembly 40 is provided inside the fuse housing 11. The connection signal assembly 40 includes a circuit board 42 fixed inside the upper part of the fuse housing 11. A connection signal lamp 43 is connected to the upper surface of the circuit board 42. The connection signal lamp 43 faces the light-transmitting hole 1102. A first wire 41 and a second wire 44 are connected to the circuit board 42. The other end of the first wire 41 is connected to the terminal block 13. The other end of the second wire 44 is connected to the strip contact 15.

[0047] The working principle of the protector integrating a fuse and circuit breaker module of this application is as follows: When connecting fuse 10 and circuit breaker 30, a pair of connectors 36 are aligned with a pair of connector slots, and the circuit breaker contact 35 is aligned with the contact slot 110. Then, they are brought close together so that the connectors 36 are horizontally inserted into the connector slots and the circuit breaker contact 35 is horizontally inserted into the contact slot 110. Next, a pair of connecting screws pass vertically from front to back through fuse housing 11 and are screwed onto the connectors 36. Finally, the integrated connecting screws 19 are tightened so that the circuit breaker contact 35 and the contact slot are aligned. The two contacts 15 are tightly attached to each other, thus completing the connection between the fuse 10 and the circuit breaker 30. This integration of the fuse 10 and the circuit breaker 30 can be achieved without additional wiring layout. When the line is overloaded, the circuit breaker 30 will activate, and the problem can be resolved by simply closing the circuit breaker without replacing the fuse element of the fuse 10. When there is a short circuit, the fuse 10 will activate, and the fuse element will melt quickly with a short breaking time. At the same time, it has strong breaking capacity, strong current limiting capacity, and low allowable energy, overcoming the shortcomings of the two as independent working modules.

[0048] When the fusible link 20 is loaded, the horizontal limiting block 17 is inserted into the insertion limiting groove 1810 of the vertical moving seat 181. At this time, the vertical limiting seat 181 cannot move downward, so the pressure block 341 cannot move downward either. When the fusible link 20 is vertically inserted into the fuse housing 11 from top to bottom, the sliding column 1831 is inserted into the vertical groove at the lower end opening of the sliding groove 200. Then the fusible link 20 is rotated. During this process, the sliding column 1831 moves along the horizontal groove of the sliding groove 200, and the protrusion 21 of the fusible link 20 drives the horizontal limiting block 17 to swing horizontally. In this way, the horizontal limiting block 17 disengages from the vertical moving seat 181. The insertion limiting slot 1810 of 1 is installed, so that the vertical limiting seat 18 is in a free state in the vertical direction and the load contact 14 abuts against the contact 22 on the fuse element. Then, the pressure block 341 moves down and drives the vertical limiting seat 18 to move down through the driving abutment block 182. In this way, the sliding column 1831 moves vertically along another vertical groove of the sliding groove 200 until the sliding column 1831 abuts against the bottom of this vertical groove of the sliding groove 200. This completes the locking of the fuse element 20. Through the above operation, when the circuit breaker 30 is reset, the fuse element 20 is installed in place and locked, ensuring the positional stability of the fuse element 20 during operation. When the fuse carrier 20 is installed in place, the fuse carrier 20, terminal block 13, first wire 41, circuit board 42, second wire 44, strip contact 15, and stationary contact 16 form a circuit. When the connection indicator light 43 is lit, it indicates that the fuse carrier 20 is in place. When the connection indicator light 43 is off, it indicates that the fuse carrier 20 is not in place, which makes it easy to confirm whether the fuse carrier 20 is installed in place.

[0049] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A protector integrating a fuse and a circuit breaker module, characterized in that: Includes a fuse (10) and a circuit breaker (30); the circuit breaker (30) includes a circuit breaker housing (31); the fuse (10) includes a fuse housing (11) and a fuse carrier (20); the fuse carrier (20) is vertically inserted into the fuse housing (11) from top to bottom; a pair of connecting seats (36) are formed on the end face of the circuit breaker housing (31) near the fuse housing (11); a pair of connecting slots for horizontal insertion of the connecting seats (36) are formed on the end face of the fuse housing (11) near the circuit breaker (30); a pair of connecting screws are vertically inserted through the fuse housing (11); the connecting screws are screwed into the connecting slots inserted into the corresponding sides. On the base (36); a circuit breaker plug contact (35) extends from the lower end of the end face of the circuit breaker housing (31) near the fuse housing (11); a contact groove (110) for horizontal insertion of the circuit breaker plug contact (35) is formed at the lower end of the end face of the fuse housing (11) near the circuit breaker (30); a strip contact (15) is provided at the lower end of the interior of the fuse housing (11); an integrated connecting screw (19) is provided on the strip contact (15); a connection operation hole for vertical passage of the integrated connecting screw (19) is formed at the lower end of the fuse housing (11); the strip contact (15) and the circuit breaker plug contact (35) are connected by the integrated connecting screw (19); An interlocking mechanism is provided inside the fuse housing (11) at one end near the circuit breaker (30); the circuit breaker (30) also includes a reset lever (32) swinging on the upper end of the circuit breaker housing (31) and a reset lifting seat (34) vertically and elastically movable; the reset lifting seat (34) and the reset lever (32) are provided with a linkage structure; through the linkage structure, the reset lifting seat (34) swings to drive the reset lifting seat (34) to rise and fall; the upper end of the reset lifting seat (34) near the fuse (10) is formed with Pressure block (341); the pressure block (341) extends out of the circuit breaker housing (31) and the circuit breaker housing (31) has a first moving groove formed on it for vertical movement of the pressure block (341); the fuse housing (11) has a second moving groove (1100) formed on its end face near the circuit breaker housing (31) for vertical movement of the pressure block (341); the interlocking mechanism is located between the pressure block (341) and the fuse carrier (20); when the fuse carrier (20) is not installed in place, the interlocking mechanism restricts the pressure block (341) from moving downward.

2. The protector integrating a fuse and circuit breaker module according to claim 1, characterized in that: A terminal block (13) is provided inside the fuse housing (11) at the end away from the circuit breaker (30); a load contact (14) is provided at the end of the terminal block (13) near the circuit breaker (30); a clearance groove (201) is formed on the side wall of the fuse carrier (20); an upper contact (22) of the fuse carrier is provided in the clearance groove (201); the upper contact (22) of the fuse carrier is used to abut against the load contact (14); a stationary contact (16) is provided at the upper end of the strip contact (15); a lower contact of the fuse carrier is provided at the bottom of the fuse carrier (20); the lower contact of the fuse carrier is used to abut against the stationary contact (16).

3. The protector integrating a fuse and circuit breaker module according to claim 1, characterized in that: The sidewall of the melt carrier (20) is formed with a protrusion (21), and the lower end is formed with a sliding groove (200); the sliding groove (200) consists of a horizontal groove and a pair of vertical grooves; the pair of vertical grooves are connected to the lower sides of both ends of the horizontal groove, and one of the vertical grooves is open at the lower end; the interlocking mechanism includes a horizontally swinging horizontal limiting block (17) and a vertically elastically movable vertical limiting seat (18); the vertical limiting seat (18) includes a vertical moving seat (181); the horizontal limiting block (17) is located between the vertical moving seat (181) and the melt carrier (20); the upper part of the vertical moving seat (181) is... The end is formed with an insertion limiting groove (1810) for horizontal insertion of the horizontal limiting block (17); the vertical moving seat (181) has a driving abutment block (182) formed at one end away from the melting element (20) and a horizontal extension seat (183) formed at the other end near the melting element (20); the horizontal extension seat (183) has a cylindrical sliding column (1831) formed at one end away from the vertical moving seat (181) that cooperates with the sliding groove (200); the pressure block (341) abuts against the upper end of the driving abutment block (182); the protrusion (21) is used to drive the horizontal limiting block (17) to swing horizontally.

4. The protector integrating a fuse and circuit breaker module according to claim 2, characterized in that: A connecting spring (161) is fixed to the upper end face of the strip contact (15); the connecting spring (161) is sleeved on the stationary contact (16) and its outer diameter is smaller than the bottom diameter of the molten metal carrier (20).

5. A protector integrating a fuse and circuit breaker module according to claim 2, characterized in that: A communication signal assembly (40) is provided inside the fuse housing (11); the communication signal assembly (40) includes a circuit board (42) fixed inside the upper end of the fuse housing (11); a connection signal lamp bead (43) is connected to the upper surface of the circuit board (42); a light-transmitting hole (1102) with upper and lower openings that cooperate with the connection signal lamp bead (43) is formed at the upper end of the fuse housing (11); a first wire (41) and a second wire (44) are connected to the circuit board (42); the other end of the first wire (41) is connected to the terminal block (13); the other end of the second wire (44) is connected to the strip contact (15).

6. The protector integrating a fuse and circuit breaker module according to claim 1, characterized in that: The strip contact (15) near the circuit breaker (30) has a vertical through hole (150) with openings at the top and bottom; a connecting nut (151) coaxially arranged with the vertical through hole (150) is provided on the upper surface of the strip contact (15); the integrated connecting screw (19) passes vertically through the vertical through hole (150) from bottom to top and is screwed onto the connecting nut (151); the circuit breaker plug contact (35) near the strip contact (15) has a U-shaped slot (350) that mates with the integrated connecting screw (19).

7. A protector integrating a fuse and circuit breaker module according to claim 6, characterized in that: An elastic washer (194) is fitted on the integrated connecting screw (19); the circuit breaker plug contact (35) is located between the elastic washer (194) and the strip contact (15).

8. A protector integrating a fuse and circuit breaker module according to claim 1 or 6, characterized in that: The integrated connecting screw (19) includes an integrated screw body (191); the head of the integrated screw body (191) is injection molded with a plastic plug (192).

9. A protector integrating a fuse and circuit breaker module according to claim 8, characterized in that: The plastic plug (192) has several axially distributed annular grooves formed on it; a sealing ring (193) is provided in the groove.

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