产品概述
CQM3E系列电子式塑壳断路器(以下简称断路器)，适用于交流50Hz(或
60Hz),其额定绝缘电压为800V,额定工作电压690V及以下，额定工作电流至
800A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、短路瞬时和欠压保护
功能、避免不必要的停电，能提
高供电可靠性，断路器保护特性齐全、精确，能保护线路和电源设备不受损坏。
断路器具有体积小、分断高、飞弧短(部分规格零飞弧)、抗振动等特点。
本断路器可垂直安装(即竖装)，亦可水平安装(即横装)。 本断路器具有隔离
功能，其相应的符号为：
。 断路器不可倒进线。2、4、6接负载线， 即只允许1、3、
5接电源线。 断路器符合GB/T14048.2标准要求。
产品型号选型
举例：如订CQM3E-125，标准型，三极，配电用，额定电流为50A并带分励脱扣器、板前接线2只，即写为订CQM3E-125L/3310 50A，2只。
产品专利
主要技术性能指标
注：1. 根据GB14048.1术语“寿命”表示电器在修理或更换部件前完成的操作循环次数的概率。
2. 分别选装高为6.2mm(CQM3E-100)、7.5mm(CQM3E-250)、9.3mm(CQM3E-400)、 9.5mm(CQM3E-630/800)的零飞弧罩，实现零飞弧。
1. Application
molded case circuit breakers have the functions of long overload delay reverse time limit, short delay reverse time limit, short circuit delay fixed time limit, short circuit instantaneous and under-voltage protection. The protection characteristics of circuit breaker are complete and accurate. It can improve the reliability of power supply and avoid unnecessary blackouts. Only 1, 3, 5 power lines, 2, 4, 6 load lines are allowed.
Features
·Compact structure
·Electric ratings: AC 400V ,50Hz/60Hz
·Up to 800A current rating
·Mounting mode: Vertical and horizontal
·Compliant standard: IEC/EN60947-2.
·High interruption, short arc (partial zero arc) and anti-vibration.
2. Selection
3. Technical data
|
Frame size current(Inm)A
|
125
|
250
|
400
|
800
|
|
Model
|
CQM3E-125
|
CQM3E-250
|
CQM3E-400
|
CQM3E-800
|
|
Poles
|
3
|
4
|
3
|
4
|
3
|
4
|
3
|
4
|
|
Rated current In(A)
|
32(12.5～32)
63(25～63)
100(40～100)
|
250(100～250)
|
400(160～400)
|
800(315～800)
|
|
Insulation voltage Ui(V)
|
AC800
|
AC800
|
AC800
|
AC800A
|
|
Rated impulse withstand voltage Uimp(V)
|
8000
|
8000
|
8000
|
8000
|
|
Rated operating voltage Ue(V) 50Hz/60Hz
|
AC400
|
AC400
|
AC400
|
AC400
|
|
Arcing distance(mm)
|
≯50(0)²
|
≯50(0)²
|
≯100(0)²
|
≯100(0)²
|
|
Rated breaking capacity Icu(kA)
|
L:50
|
M:70
|
L:50
|
M:70
|
L:65
|
M:100
|
100
|
|
Rated service short circuit breaking capacity Ics(KA)
|
L:35
|
M:50
|
L:35
|
M:50
|
L:42
|
M:65
|
65
|
|
Rated short time withstand current Icw(kA)/1s
|
-
|
5/0.4
|
5/1
|
10/1
|
|
Utilization class
|
A
|
B
|
B
|
B
|
|
Electrical life(cycles)
|
8000
|
8000
|
7500
|
7500
|
|
Mechanical life
|
Without maintenance
|
20000
|
20000
|
10000
|
10000
|
|
With maintenance
|
40000
|
40000
|
20000
|
20000
|
|
Overall
dimensions (mm)
|
Width
|
92
|
122
|
107
|
142
|
150
|
198
|
210
|
280
|
|
Length
|
150
|
165
|
257
|
280
|
|
Height
|
92
|
90
|
106.5
|
115.5
|
Note:1. According to the IEC60947-1 term "life" denotes the probability of the number of operating cycles that an electrical appliance completes before repairing or replacing components.
2.Zero flying arc cover with height of 4mm (CQM3-63L/M,), 6.2mm CQM3-100L/M, 7.5mm (CQM3-250L/M), 9.3mm (CQM3-400L/M, CQM3-630L/M) and 9.5mm (CQM3-800L/M) is selected to realize zero flying arc.
4. Overall and mounting dimensions (mm)
|
Model
|
Poles
|
Overall dimensions
|
Mounting dimensions
|
|
A
|
B
|
C
|
D
|
a
|
b
|
φd
|
|
CQM3E-125
|
3
|
92
|
150
|
110
|
92
|
30
|
129
|
4.5
|
|
4
|
122
|
60
|
|
CQM3E-250
|
3
|
107
|
165
|
110
|
90
|
35
|
126
|
4.5
|
|
4
|
142
|
70
|
|
CQM3E-400
|
3
|
150
|
257
|
146.5
|
106.5
|
44
|
194
|
7
|
|
4
|
198
|
94
|
|
CQM3E-800
|
3
|
210
|
280
|
155
|
115.5
|
70
|
243
|
7
|
|
4
|
280
|
140
|
5. Certificate
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