CHINT NM1 Series Installation instructions

NO:2021.04
Standard: IEC/EN 60947-2
GB/T 14048.2
User Instruction
NM1 Series
Moulded Case Circuit Breaker

Safety Warning
1
2
3
4
Only professional technicians are allowed for installation and maintenance.
Installation in any damp, condensed-phase environment with inflammable
and explosive gas is forbidden.
You are prohibited from touching the conductive part when the product is
operating.
When the product is being installed or maintained, the power must be
switched off.
Do not install it in a place where gaseous media can corrode metals and
damage insulation.
In order to avoid dangerous accidents, the installation and fixation of the
product must be carried out in strict accordance with the requirements of
the user instructions.
5
6

1
2
01
Operating conditions
a) The normal operating ambient temperature of the product is - 5 ℃ ~ + 40 ℃;
Note: if it is used within the range of - 25 ℃~+70 ℃, please consult with the manufacturer
b) Please refer to the catalogue for the time-current characteristics and the correction coefficient
regarding to temperature and altitude
c) Pollution degree: grade 3
d) Class of pollution: Class 3
e) Main circuit installation category: Ⅲ
f) IP degree: IP30
g) Rated insulation voltage Ui: 800V;
Inspection and Test
NM1 Series Moulded Case Circuit Breaker
Smin
25min
25min
20min
Figure 1 Inspection
Model
NM1-63H
NM1-125
NM1-250
NM1-400
NM1-630
NM1-800
NM1-1250
NM1-63S M4×30
M4×45
M6×75
M6×90
M8×40
2P
-
-
2
2
-
-
-
-
3P
4
4
4
4
4
4
4
4
4P
4
4
4
4
4
4
4
-
Unit: mm
NM1-63
NM1-125
NM1-250
NM1-400
NM1-630
NM1-800
NM1-1250
Model S
50
100
Determine
product
technical
parameters;
Mounting screw Quantity
tool
Cross screwdriver
Allen wrench
Hexagon wrench
Figure 2 Minimum installation distance
Ensure
minimum
installation
distance

02
NM1 Series Moulded Case Circuit Breaker
①
Re-trip
②
Switch on
③
Switch off
④
Switch on
⑤
Press trip
CLICK！
Figure 3 Test
3
Overall and mounting dimensions
Figure 4 NM1-63、125、250
F
E
G1
22
Undervoltage release
Flash barrier
F
E
A
G
W1 W1
W
Flash barrier
2P
W1
W3
2XΦd
4XΦd H
H1(max)
H3
H4
H2
22
C
B
L
L1
G
A
A
W2
W1 W1 W1
L2
G1
6X dΦ
3P 4P
Undervoltage release
Table 1 Outline and Installation Size of NM1-63、125、250
Size type
NM1-63S
NM1-63H NM1-125S
NM1-125
H、R
NM1-125
H/2P
NM1-250S
NM1-250
H、R
NM1-250
S /2P
Product model
Size code
Outline
size
C
E
F
G
G1
H
H1
H2
85
48
23
14
6.5
71
91
19
85
48
23
14
6.5
80
100
28
85
51
23
17.5
7.5
68
86
24
85
51
23
17.5
7.5
86
104
24
85
51
23
17.5
7.5
86
102
24
102
51
23
23
11.5
87
110
24
102
51
23
23
11.5
103.5
127
24
102
51
23
23
11.5
85.5
109
23
Unit: mm

03
NM1 Series Moulded Case Circuit Breaker
Size type
NM1-63S
NM1-63H NM1-125S
NM1-125
H、R
NM1-125
H/2P
NM1-250S
NM1-250
H、R
NM1-250
S /2P
Product model
Size code
Outline
size
H3
H4
L
L1
L2
W
W1
W2
W3
A
B
Φd
6
5
135
235
117
76
25
--
--
25
117
4.5
6
5
135
235
117
76
25
103
--
25
117
4.5
4
7
155
255
136
90
30
120
65
30
130.5
4.5X6
4
7
155
255
136
90
30
120
--
30
130.5
4.5×6
4
7
150
250
130
--
30
--
65
--
129
4.5
3.5
5.5
165
362
144
105
35
140
--
35
126
5
3.5
5.5
165
362
144
105
35
140
75
35
126
5
3.5
5.5
165
362
144
--
35
--
75
--
126
5
Installation
size
Table 1 (Continued)
Figure 5 NM1-400、630、800、1250
3P
H2
H
H1(max)
H5
H4
H3
22
E
F
A
G
G1
W1 W1
W
4XΦd
22
A A1
W1 W1 W1
W2
C
C1
B
L2
L
L1
6XΦd
4P
Flash barrier
Undervoltage release Undervoltage release
Flash barrier

04
NM1 Series Moulded Case Circuit Breaker
Size type
NM1-400
S、H、R/3P
NM1-400
S、H/4P
NM1-630
S、H、R/3P
NM1-630
S、H/4P
NM1-800
S、H、R/3P
NM1-800
S、H/4P
NM1-1250
S/3P
NM1-1250
H/3P
Product model
Size code
Outline
size
C
C1
E
F
G
G1
H
H1
H2
H3
H4
H5
L
L1
L2
W
W1
W2
A
A1
B
Φd
128
174
89
66
30
11.5
107.5
162
40
6
5
4.5
257
466
224
150
48
--
44
--
194
8
128
174
89
66
30
11.5
107.5
162
40
6
5
4.5
257
466
224
--
48
198
44
50
194
8
136
184.5
89
66
40.5
15.5
112
164.5
42
6.5
3.5
4.5
270.5
472
234
182
58
--
58
--
200
7
136
184.5
89
66
40.5
15.5
112
164.5
42
6.5
3.5
4.5
270.5
472
234
--
58
240
58
58
200
7
136
204
81
66
45
12
116
168
42
4.5
5
8
280
490
243
210
70
--
70
--
243
7
136
204
81
66
45
12
116
168
42
4.5
5
8
280
490
243
--
70
280
70
70
243
7
204
316
100
78
--
--
141
202
55/57
19
2
4.5
406
710
--
210
70
--
70
--
375
10
204
345.5
100
78
--
--
141
202
55/57
19
2
4.5
406
715
--
210
70
--
70
--
375
10
Installation
size
Table 2 Outline and Installation Size of NM1-400、630、1250
Unit: mm
Note: The total length of NM1-1250H + body connection plate is 545mm.
4
Installation and wiring
Figure 6 NM1-63S connecting plate and wire size
Installation
M6×12 4N·m
C≤4
11≤X≤13
a≤7
b≤17 b≤17
Φ7
Φ7
a≤7
14.5
Φ8.2
18
16
40.5
25.5
Φ6.5
7.5
12.5
4
R6
R6
4
Cross area
s(b×c)≥ 16

05
NM1 Series Moulded Case Circuit Breaker
Figure 7 NM1-63H connecting plate and wire size
Figure 8 NM1-125 connecting plate and wire size
Figure 9 NM1-250 connecting plate and wire size
Figure 10 NM1-400 connecting plate and wire size
Figure 11 NM1-630 connecting plate and wire size
Installation
Installation
Installation
Installation
Installation
14 4
M5×10 3N m·
12 Φ6
24
2138
6
M8-6H
Cross area
s(b×c)≥16
C≤4
10≤X≤13
a≤6b≤12
Φ5.5
b≤12
Φ5.5
a≤6
M8×16 8N m
·
Φ8.2
18
16
40.5
25.5
M8-6H
7.5
14.521.5
4
R6
R6
C≤4
10≤X≤13
a≤7
b≤15 b≤15
Φ8.5
Φ8.5
a≤7
Cross area
s(b×c)≥50
M8×16 10N m
·
23
15
5
27 R8
R8
39
9.4
57
20
M8-6H
Φ8.810≤X≤13
a≤7a≤7
Φ8.5
Φ8.5
b≤22 b≤22
C≤6
Cross area
s(b×c)≥120
M10×30 22N m
·
27
Φ14
43
12
Φ10.5
827 8
Φ14
43
Φ10.5
16.5≤X≤18
Φ10.5
Φ10.5
a≤12 b≤30 a≤12 b≤30
C≤9.5
Cross area
s(b×c)≥240
M12×35 26N m·
Φ13
8
38
80
12
R
C≤10
19≤X≤21
b≤40
Φ13
12
a≤14.5 a≤14.5
Φ13
b≤40
s(b×c)≥185
Double s(b×c)≥200
s(b×c)≥370
Single s(b×c)≥400
Wire Copper bar

NM1-63S NM1-63H
NM1-125S
NM1-125H
NM1-125R
NM1-250S
NM1-250H
NM1-250R
NM1-400S
NM1-400H
NM1-400R
NM1-630S
NM1-630H
NM1-630R
NM1-800H
NM1-800R
NM1-1250S
NM1-1250H
06
NM1 Series Moulded Case Circuit Breaker
H
Figure 12 NM1-800 connecting plate and wire size
Installation
Figure 13 NM1-1250 connecting plate and wire size
Installation
M12×60 30N m
·
C≤15
16≤X≤18
2×Φd＞12
32
≤45
Cross area
2×(s≥400)
≤10
2 article
M12×35 28N m
·
2×Φ14
72
44
10 C≤12
1
9≤X≤2
1
Φ14
b≤44
Φ14
b≤44
s(b×c)≥240 s(b×c)≥250
s(b×c)≥480 s(b×c)≥500
a≤12 a≤12
Double
Single
Wire Copper bar
5
Accessory Information
Figure 14 Overall and mounting dimensions of the motor driven mechanism
Size
code
Product model
H 157 166 152 170 182 199 255 262 261 290
Table 3 Dimensions of NM1 Series Motor Driven Mechanism
Unit: mm

07
NM1 Series Moulded Case Circuit Breaker
Breaker
min=150mm
H
H1
30.5
D
45 °
Hinge
53
Diagram of handle
installation opening
Φ36
2XΦ5.5 ≥200
Φ78
Figure 15 Dimensions of manual operated mechanism
NM1-63 NM1-125 NM1-250 NM1-400 NM1-630 NM1-800 NM1-1250
Size
code
Product model
H
H1
51
20
53
20
56.5
20
100
20
3P:90
4P:100
3P:100
4P:90 103
18
Table 4 Installation Size of NM1 Series Manual Operating Mechanism
Unit: mm
3P:18
4P:20
3P:20
4P:18
Figure 16 Installation Size of Mechanical Interlocking Mechanism
Switch A Switch B
B
F
D
E
L
A C A
8XΦd
A B C D E F L Φd
Product model
Product model
NM1-63
NM1-125
NM1-250
NM1-400
NM1-630
NM1-800
Table 5 Installation Size of Mechanical Interlocking Mechanism
Unit: mm
25
30
35
44
58
70
117
130.5
126
194
200
243
83
90
100
136
172
168
30
30
30
30
48
28
83
90
100
41
62
42
135
155
165
257
270.5
280
186
210
240
330
412
448
4.5
4.5X6
5
7
7
7

08
NM1 Series Moulded Case Circuit Breaker
3P
L1 L3 N
Breaker
L5
Tripping release
Ctrl
C1 C2
Power
supply
B14
B12
QF B11
UC2 UC1 P1 P2
Power
UC
Power
F14
F12
QF F11
Opening
Ciruit
Figure 17 Wiring of special tripping
release for prepaid electricity meter
Figure 18
Auxiliary contact wiring
Figure 19
Wiring of alarm contact
Figure 20 Wiring of under voltage release Figure 21 Wiring of Shunt release
1 Be sure to install flash
barriers or shield before
product operation.
2 Check if the wiring is
correct.
3 After installation, the
insulation resistance to
the ground shall not be
less than 10m Ω.
Figure 22 Interphase flash barrier or shield
6
Environmental Protection
In order to protect the environment, the product or product parts should be disposed of according to
the industrial waste treatment process, or be sent to the recycling station for assortment, dismantling and
recycling.

QC PASS
Test date: Please see the packing
ZHEJIANG CHINT ELECTRICS CO., LTD.
NM1 Series
Moulded Case Circuit Breaker
IEC/EN 60947-2、
GB/T 14048.2
PD1 Check 15
09
NM1 Series Moulded Case Circuit Breaker

NM1 Series
Moulded Case Circuit Breaker
User Instruction
Zhejiang Chint Electrics Co., Ltd.
Add: No.1, CHINT Road, CHINT Industrial Zone,North Baixiang,
Yueqing, Zhejiang 325603,P.R.China
E-mail: [e-mail]
Website: http://en.chint.com