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文件编号:
NDT2920019
文件版本:
4
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
4
页
共
18
页
1.
适用范围与用途/ Application scope
本断路器主要应用于交流
50/60Hz
,额定工作电压
415V
,额定工作电流至
630A
的电路中作不频繁转
换及电动机不频繁起动之用。断路器具有过载、短路和欠电压保护功能,能保护线路及电源设备不受损坏,
同时还可以对过电流保护不能检测的长期存在的接地故障可能引起的火灾危险和人身触电提供保护。
The breaker is mainly applied to infrequent changeover in a circuit with alternate current of 50/60Hz, rated
working voltage of 415V and rated working current to 630A, and to the infrequent start of electric motor. The
breaker has overload, short circuit and undervoltage protection functions that can prevent the line and power unit
from being damaged while protecting the possible fire danger and electric shock by the long-term failure of
ground connection which fails to be detected by overcurrent protection.
2.
型号说明/ Model and implication
ND M 3 L - □ □ / □ □ / □ □ □ □ □ □ □
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
序号
SN
序号名称
SN name
NDM3L
1
企业代号
Enterprise code
ND:
“Nader”牌低压电器
ND: “Nader” low-voltage apparatus
2
产品代号
Product
code
M:塑料外壳式断路器
M: Molded case circuit breaker (MCCB)
3
设计序号
Design
SN
3
4
系列派生代号
Derived code of
the series
L:
剩余电流保护
L: Residual current protection
5
壳架等级
Shell frame level
125
、
250
、
400
、
630
6
操作方式
Operation mode
无代号:手柄直接操作
No code: Direct handle-operated mode
P:电动操作
P: Motor-operated
Z:转动操作
Z: Rotary operation
7
功能派生代号
Derived code of
the function
无代号:AC 型漏电保护类型
No code: Type AC current leakage protection type
A:A 型漏电保护类型
A: Type A current leakage protection type
8
延时类型
Delay type
X:非延时
X: Non-time delay
Y:延时
Y: Delay
9
极数
Number of
poles
3, 4
10
脱扣器代号
Release code
0:无脱扣器
0: Release (none)
2:仅有瞬时脱扣器
2: Instantaneous tripper only
3:复式脱扣器
3: Complex tripper
11
附件代号
Accessory code
参见表 1
See Table 1
12
用途代号
Application code
无代号:配电型
No code: Power distribution type
2
:电动机保护型
2: Motor protection type
13
4 极产品中 N 极
(中性极)形式
A:N 极不安装过电流脱扣器,且 N 极始终接通
A: The N-pole isn't installed with an overcurrent release, but always
connected