Over-voltage/under-voltage protection device of miniature circuit breaker

A technology of small circuit breakers and protection devices, which is applied to the operation/release mechanism of protection switches, switches operated by overvoltage, switches operated when the voltage is lower than a predetermined value, etc. , can not correspond to the iron core and other problems, to achieve the effect of simple structure

Active Publication Date: 2011-11-09
ZHEJIANG TENGEN ELECTRIC
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency of the background technology, the present invention provides an overvoltage and undervoltage protection device for a miniature circuit breaker. The problem that it cannot correspond to the iron core also solves the problem of laborious pulling out the lever when testing the flexibility of the lever assembly. It has the characteristics of simple structure, safety, reliability and convenient inspection.

Method used

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  • Over-voltage/under-voltage protection device of miniature circuit breaker
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  • Over-voltage/under-voltage protection device of miniature circuit breaker

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing:

[0015] Depend on figure 1 combine Figure 2-Figure 4 As shown, the overvoltage and undervoltage protection device of the miniature circuit breaker includes an overvoltage and undervoltage protector housing 1, an overvoltage and undervoltage trip driver 2, a lever 3 and a button 4, and an iron core 5 is arranged inside the overvoltage and undervoltage trip driver 2. , the button 4 is provided with an opening slot 6, the lower end of the lever 3 corresponds to the iron core 5, the upper end of the lever 3 is angular, the upper end of the lever 3 corresponds to the opening slot 6 and can be snapped into the opening slot 6, The opening groove 6 on the button 4 is provided with a positioning block 7, and the positioning block 7 is located on the movement track of the upper end of the lever 3, and the positioning block 7 can limit the corner position of the lever 3 and ensure th...

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PUM

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Abstract

The invention discloses an over-voltage / under-voltage protection device of a miniature circuit breaker. The device mainly solves the problem that a lever of the conventional over-voltage / under-voltage protection device is too easy to overturn to correspond to an iron core. The device is characterized in that: a positioning block (7) is arranged in an opening groove (6) on a button (4); the positioning block (7) is positioned on a movement locus of the upper end of the lever (3); and the positioning block (7) can determine the corner position of the lever (3) and guarantee that the side of thelower end of the lever (3) is positioned on the movement locus of the iron core (5). The over-voltage / under-voltage protection device of the miniature circuit breaker simultaneously solves the problem that the lever is difficult to stir during check of assembly flexibility of the lever and has the characteristics of simple structure, safety, reliability and convenience for check.

Description

technical field [0001] The invention relates to a small circuit breaker, in particular to an overvoltage and undervoltage protection device for the small circuit breaker. Background technique [0002] Miniature circuit breakers refer to low-voltage circuit breakers used on AC 50 / 60Hz rated voltage 230 / 400V and rated current below 63A. They are often used in industrial, commercial, high-rise and residential buildings. According to the needs of users, general miniature circuit breakers have overvoltage and undervoltage protection functions. There is a kind of miniature circuit breaker with an overvoltage and undervoltage protector casing connected to the side of the casing, and an overvoltage and undervoltage tripping driver is installed in the overvoltage and undervoltage protector casing. The over- and under-voltage lock, the over- and under-voltage jumper and the linkage mechanism connected with the handle of the miniature circuit breaker. The locks of the circuit breaker ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/24H01H83/10H01H83/12
Inventor 邹城华卢权胜王卫国李芃
Owner ZHEJIANG TENGEN ELECTRIC
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