一种漏电保护断路器

Abstract

本实用新型的实施例提供了一种漏电保护断路器，涉及低压电器技术领域。本实用新型提供的漏电保护断路器包括外壳和沿第一方向分布于外壳两端的操作手柄和插接端子，漏电保护断路器通过插接端子插接于机箱，还包括设置于外壳内的断路器本体、漏电检测互感器、漏电执行模块与控制线路板，外壳内沿第二方向划分有第一腔体和第二腔体，漏电执行模块与控制线路板位于第一腔体内，断路器本体与漏电检测互感器设置于第二腔体内；第一方向与第二方向垂直。本实用新型可以减小漏电保护断路器的长度尺寸，有效缩小断路器本体的整体体积，使得本实用新型提供的漏电断路保护器结构紧凑、体积较小，在小空间内也能实现良好的安装使用效果。

Claims

1. A residual current circuit breaker, comprising a housing (100) and an operating handle (101) and plug-in terminals (102) distributed at both ends of the housing (100) along a first direction, wherein the residual current circuit breaker is plugged into a chassis via the plug-in terminals (102), characterized in that, Also includes: The circuit breaker body (200), leakage current detection transformer (300), leakage current execution module (400) and control circuit board (500) are disposed in the housing (100). The outer casing (100) is divided into a first cavity (110) and a second cavity (120) along the second direction. The leakage current execution module (400) and the control circuit board (500) are located in the first cavity (110), and the circuit breaker body (200) and the leakage current detection transformer (300) are disposed in the second cavity (120). The first direction is perpendicular to the second direction.

2. The arc fault circuit interrupter of claim 1, wherein, The plug-in terminal (102) includes an input terminal and an output terminal, the input terminal and the output terminal are located at the same end of the housing (100), and the leakage current detection transformer (300) is located at the end of the second cavity (120) near the operating handle (101).

3. The arc fault circuit interrupter of claim 1, wherein, The outer shell (100) includes a first upper shell (103), a first lower shell (104) and a middle cover (105). The first upper shell (103) and the middle cover (105) together form the second cavity (120), and the first lower shell (104) and the middle cover (105) together form the first cavity (110).

4. The arc fault circuit interrupter of claim 1, wherein, The outer shell (100) includes a second upper shell (106), a second lower shell (107), a third upper shell (108), and a third lower shell (109). The second upper shell (106) and the second lower shell (107) together form the first cavity (110), and the third upper shell (108) and the third lower shell (109) together form the second cavity (120). The second lower shell (107) and the third upper shell (108) are spliced ​​together.

5. The arc fault circuit interrupter of claim 1, wherein, The second cavity (120) includes at least two independent chambers, and the circuit breaker body (200) is provided in each of the multiple chambers. The leakage current detection transformer (300) passes through the multiple chambers simultaneously.

6. The arc fault circuit interrupter of claim 1, wherein, One end of the housing (100) is provided with a leakage current regulator (610) and a leakage delay time regulator (620), both of which are electrically connected to the control circuit board (500).

7. The residual current circuit breaker according to any one of claims 1-6, characterized in that, The leakage current execution module (400) includes a trip unit (410) and a tripping mechanism (420). The control circuit board (500) is electrically connected to the leakage current detection transformer (300) and the trip unit (410) respectively. The trip unit (410) is drive-connected to the tripping mechanism (420).

8. The arc fault circuit interrupter of claim 7, wherein, The tripping mechanism (420) includes a rotating member (421) and a tripping shaft (422). The rotating member (421) has a driving part (4211) and an actuating part (4212) connected at a preset angle. The driving part (4211) abuts against the trip unit (410). One end of the tripping shaft (422) abuts against the actuating part (4212), and the other end of the tripping shaft (422) extends into the second cavity (120) and is connected to the circuit breaker body (200). When the trip unit (410) drives the rotating member (421) to rotate, the actuating part (4212) drives the trip shaft (422) to move, thereby driving the circuit breaker body (200) to open.

9. The arc fault circuit interrupter of claim 8, wherein, The leakage current execution module (400) further includes a leakage current indication mechanism (440), which is tractively connected to the rotating member (421) to indicate the leakage current status when the circuit breaker body (200) is tripped due to leakage current.

10. The arc fault circuit interrupter of claim 9, wherein, The leakage current indicating mechanism (440) includes a transmission rod (442), a first elastic element (4411), and a limiting part (444), wherein the transmission rod (442) is slidably disposed in the first cavity (110); The transmission rod (442) is provided with a mounting groove (4412) for accommodating the first elastic element (4411). One end of the transmission rod (442) is provided with an indicator button (443). The transmission rod (442) can move under the action of the first elastic element (4411) so that the indicator button (443) extends to the outside of the housing (100). The limiting part (444) and the indicating button (443) are respectively disposed at both ends of the transmission rod (442), and the actuating part (4212) is provided with a supporting part (4413) at the end away from the driving part (4211); there is a snap-fit ​​groove (445) between the limiting part (444) and the transmission rod (442) for accommodating the supporting part (4413), and there is a supporting groove (4414) between the supporting part (4413) and the actuating part (4212) for accommodating the limiting part (444), so that the supporting part (4413) and the limiting part (444) can be engaged with each other; When the trip unit (410) is activated, the rotating member (421) rotates until the abutment part (4413) and the limiting part (444) are released from the engagement state, and the indicated button (443) moves outside the housing (100) under the action of the first elastic member (4411).

11. The residual current circuit breaker according to claim 10, characterized in that, The limiting part (444) has a limiting surface (446), and the supporting part (4413) has a supporting surface (4415). When the indicator button (443) moves outside the housing (100), the limiting surface (446) abuts against the supporting surface (4415) to lock the trip shaft (422) in the open state.

12. The arc fault circuit interrupter of claim 1, wherein, The leakage current execution module (400) also includes a leakage current simulation mechanism (700), which is electrically connected to the leakage current detection transformer (300) and the control circuit board (500) to detect whether the leakage current protection circuit breaker can operate normally.

13. The arc fault circuit interrupter of claim 12, wherein, The leakage current simulation mechanism (700) includes a leakage current simulation button (710), a second elastic element (720), a first contact (730) and a second contact (740). The leakage current simulation button (710) is slidably disposed in the first cavity (110), and the second elastic element (720) is connected to the leakage current simulation button (710). The first contact (730) abuts against the leakage current simulation button (710); when the circuit breaker body (200) is closed, the leakage current simulation button (710) can be driven to move toward the first cavity (110) so that the first contact (730) and the second contact (740) are connected. When the first contact (730) and the second contact (740) are connected, the control circuit board (500) can drive the circuit breaker body (200) to open through the leakage current execution module (400).

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