文件编号：
NDT-03560
文件版本：
11
地址：上海市浦东新区申江南路
2000
号
邮编：
201315
电话：
(021)68586699
传真：
(021)23025796
第
5
页
共
33
页
1.
适用范围与用途/ Application scope
NDM3Z 系列直流塑壳断路器（以下简称断路器）按功能分为 NDM3Z 和 NDM3ZB。NDM3Z 系列简
称断路器按壳架等级可分为 125 型、250 型、250V 型、250VM 型、320V 型、400 型、630 型和 800 型
8 个等级。断路器适用于额定工作电压至 DC1000V(250V 型至 1500V；250VM 型至 1100V；320V 型至
1500V)，额定工作电流至 800A 的直流电网电路中，用来分配电能、保护电路和电源设备。NDM3ZB 系
列简称断路器按壳架等级可分为 125 型、250 型、400 型和 800 型 4 个等级。断路器适用于额定工作电压
至 DC250V，额定工作电流至 800A 的直流电网电路中，用来分配电能、保护电路和电源设备。断路器具
有过载、短路(NDM3ZB 还具有短路短延时保护)和欠电压等保护功能。
The NDM3Z series of moulded case circuit breakers (Hereinafter referred to as MCCBs) is divided
into NDM3Z and NDM3ZB in according to functions.The NDM3Z series MCCBs can be divided into
seven classes according to their frame sizes, viz. Type 125, 250,250V, 250VM, 320V,400, 630 and 800.
The MCCBs are applicable for the DC grid circuit with the rated operational voltage up to
DC1000V(250V up to DC1500V；250VM up to DC1100V；320V up to DC1500V) and the rated
operational current up to 800A for electrical energy distribution, and circuit and power equipment
protection. The NDM3ZB series MCCBs can be divided into four classes according to their frame sizes,
viz. Type125,250,400 and 800. The MCCBs are applicable for the DC grid circuit with the rated
operational voltage up to DC250V and the rated operational current up to 800A for electrical energy
distribution, and circuit and power equipment protection.The MCCBs have the protecting functions in
case of overload, short circuit（NDM3ZB furfher has short circuit delay protection）, undervoltage and so
on.
断路器具有隔离功能，相应符号为/The MCCBs have the isolating function with the relative symbol：
本产品符合标准/Standards for this kind of products：
GB/T14048.1-2012 低压开关设备和控制设备 第 1 部分 总则/ Low-voltage switchgear and
controlgear—Part 1: General rules
GB/T14048.2-2008 低压开关设备和控制设备 第 2 部分 低压断路器/Low-voltage switchgear
and controlgear - Part 2: Low-voltage circuit-breakers
GB/T14048.4-2010 低压开关设备和控制设备 低压机电式接触器和电动机起动器（不包含 250V
系
列）
/
Low-voltage switchgear and controlgear – Low voltage electromechanical contactors and
motor-starters(not involve 250V serial)
GB/T14048.5-2008
低压开关设备和控制设备
第
5-1
部分：控制电路电器和开关元件机电式控制电
器
/
Low-voltage switchgear and controlgear--Part 5-1: Control circuit devices and switching
element--Electromechanical control circuit devices
