Plug-in circuit breaker

Abstract

The utility model belongs to low -voltage electric appliance technical field discloses a plug -in circuit breaker, including the shell and incoming line terminal, the shell's incoming line end is provided with first installation slot and second installation slot, and the incoming line terminal includes the protection pole bus clamp and straight -through pole bus clamp respectively arranged in first installation slot and second installation slot, and the protection pole bus clamp and straight -through pole bus clamp all include the connecting portion and two interval distribution and set up in the clamping portion of connecting portion both ends, and the clamping portion between two forms the clamping opening for clamping the busbar, and the protection pole bus clamp's clamping opening pitch is less than the clamping opening pitch of straight -through pole bus clamp. This plug -in circuit breaker structure design is more reasonable, namely according to the different of temperature rise, the clamping opening pitch of protection pole bus clamp and straight -through pole bus clamp is designed in the light of the situation, makes protection pole bus clamp and straight -through pole bus clamp can better adapt the requirement plug -pull force, has improved the experience of assembly and disassembly, has reduced the assembly and disassembly difficulty, is favorable to the maintenance of plug -in circuit breaker.

Claims

1. Plug-in circuit breaker, characterized in that include: The housing (1) has a first mounting groove (11) and a second mounting groove (12) at its inlet end; The incoming terminal (8) includes a protective pole bus clamp (81) and a through pole bus clamp (82) respectively disposed in the first mounting groove (11) and the second mounting groove (12). The protective pole bus clamp (81) and the through pole bus clamp (82) each include a connecting part (811) and two clamping parts (812) spaced apart and disposed at both ends of the connecting part (811). A clamping slot for clamping the busbar is formed between the two clamping parts (812). The clamping slot spacing of the protective pole bus clamp (81) is smaller than the clamping slot spacing of the through pole bus clamp (82).

2. Plug-in circuit breaker according to claim 1, characterized in that The minimum spacing between the clamps of the protective pole bus clamp (81) is 0.1mm-0.4mm; the minimum spacing between the clamps of the through pole bus clamp (82) is 0.4mm-0.8mm.

3. The plug-in circuit breaker of claim 1, wherein, The clamping part (812) includes a straight section (8121) and a bent section (8122). The straight section (8121) is disposed at one end of the connecting part (811), and the bent section (8122) is disposed at the end of the straight section (8121) away from the connecting part (811). The two bent sections (8122) protrude towards each other to form the clamping opening, and the minimum distance between the clamping openings is less than the distance between the two straight sections (8121).

4. Plug-in circuit breaker according to claim 3, characterized in that The clamping part (812) further includes an inclined section (8123) disposed at the end of the bent section (8122) away from the straight section (8121), and the two inclined sections (8123) are inclined in opposite directions to form a guide opening.

5. Plug-in circuit breaker according to claim 4, characterized in that Each of the two bending segments (8122) has a plurality of strip-shaped protrusions (8122a) spaced apart along the width direction of the bending segment (8122) on its facing sides, and a clamp is formed between each of the two opposing strip-shaped protrusions (8122a) on the two bending segments (8122).

6. Plug-in circuit breaker according to claim 5, characterized in that Each of the clamping parts (812) is provided with a strip gap (814) that passes through the bent section (8122) and the inclined section (8123) between any two adjacent strip protrusions (8122a).

7. The plug-in circuit breaker of claim 1, wherein, Both the protective pole bus clamp (81) and the through pole bus clamp (82) further include a fixing part (813) disposed in the clamping part (812) or the connecting part (811). The fixing part (813) of the protective pole bus clamp (81) is connected to the short circuit protection mechanism (7) disposed in the housing (1), and the fixing part (813) of the through pole bus clamp (82) is connected to the positive pole output terminal (3) disposed in the housing (1).

8. The plug-in circuit breaker according to claim 7, characterized in that, The connecting part (811) is provided with a notch (8111) extending to the clamping part (812), and the fixing part (813) is provided at the notch (8111) and connected to one of the clamping parts (812).

9. The plug-in circuit breaker of claim 1, wherein, Both the protective electrode bus clamp (81) and the through electrode bus clamp (82) are integral sheet metal parts.

10. The plug-in circuit breaker of claim 1, wherein, The protection pole bus clamp (81) and the straight-through pole bus clamp (82) are both made of alloy copper.

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