适用范围
MS20LE系列漏电断路器适用于交流50Hz、额定电压380V，额定电流至400A以及下的电路中，可作为人身触电、漏电保护之用。也可用来防止设备绝缘损坏，产生接地故障电流而引起的火灾危险，并可用来保护线路和电动机过载及短路保护，亦可作为对线路的不频繁切换及电动机的不频繁起动用。
结构特征
本系列漏电断路器系电流动作型电子式漏电断路器，主要由零序电流互感器、电子组件板、漏电脱扣器及带有过载和短路保护的断路器组成。全部零部件安装在一个塑料外壳中。当被保护线路中有漏电或人身触电时，只要漏电I△A达到动作值，零序电流互感器的二次绕组输出一个信号，经电子组件板放大，并触发可控硅带动脱扣器动作，使断路器断开，从而切断电源起到触电保护作用。
主要技术参数
1、断路器基本参数
型号 MS20LE-160 MS20LE-250 MS20LE-400
Un（V）AC 380
Inm（A）160 250 400
极数（p）4 4 4
In（A）60、80、100、120、140、160 120、140、180、200、250 200、250、300、350、400
I△n（mA）50 50 50 100 200 300 100 200 300 500
I△no（mA）25 25 25 50 100 150 50 100 150 250
电寿命（次）5000
电流分断时间（S）≤0.1
外型及安装尺寸
Inm（A）极数外形尺寸（mm）安装尺寸（mm）
A B C D a b 安装孔
160 4 145 225 105 87 70 203 4-Φ4.5
250 4 145 277 138 111 70 240 4-Φ5
400 4 206 363 146 111 102 325 4-Φ7.5
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| 型号： | MS20LE |
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