文件编号
Doc.No.
NDT2920002
版次
Edition
第
5
版
Version5
实施日期
Implementation date
20181213
3
1、适用范围与用途 Application Scope and Purpose
本断路器主要应用于交流 50/60Hz，额定工作电压 380/400/415V、500V、660/690V，额定工作电
流至 1600A 的电路中作不频繁转换之用。具有过载长延时反时限、短路短延时反时限、短路短延时定
时限、短路瞬时、预报警、接地故障保护、“四遥”功能、过载报警不脱扣及欠电压保护功能，能保护线
路和电源设备不受损坏。
The breaker is mainly used in the circuit of AC 50/60Hz, rated working voltage 380/400/415V or
660/690V and rated working current up to 1600A. Provided with overload long-delay inverse time,
short circuit short- delay inverse time, short circuit short- delay definite time and instantaneous short
circuit grounding fault protection and “Four remoteness” function, overload alarm without tripping
and under voltage protection functions, the breaker can protect the circuit and electric power unit from
being damaged.
2、型号说明 Description of model
序号 No. 序号名称 Description
NDM3E
1
企业代号 Enterprise code
ND Nader 牌 低压电器
ND Nader low-voltage electric appliance
2
产品代号 Product code
M 塑料外壳式断路器 Molded case circuit breaker
3
设计序号 Design code
3
4
派生代号 Derived code
E：电子式 E:Electronic type
5
壳架等级 Rated frame current
125、250、400、630、800、1250、1600
6
分断等级代号 Breaking class code
M：较高分断 M:moderate breaking class
H：高分断 H:high breaking class
7
操作方式 Operation mode
无代号：手柄直接操作
Without code：operation directly
P：电动操作 P:motorized operation
Z：转动手柄 Z:operation with rotary handle
8
脱扣器类型 Release type
无代号：基本型 Without code: basic type
G：接地保护型 G:grounding type
T：通讯型 T: communication type
GT：接地保护通讯型
GT: grounding and communication type
9
极数 Numbers of Poles
3、4
10
附件代号 Accessory code
见附件代号对照表
Refer to Accessory code comparison table
11
用途代号 Usage code
无代号：配电用 Without code : power distribution
