P- 003

P- 118 Moulded
MCCB Case
NXMCircuit Breakers Overview

NXM series moulded case circuit breaker

Breaker

The moulded case circuit breaker will provide protection for the circuit and equipment in case
of overload, short circuit and under voltage condition occurred in the power distribution circuit.
Besides, it can also provide protection of overload, short circuit and under voltage for the non-
frequent start of motor

▪ Frame size:
NXM-250S/4300A
NXMS series moulded case circuit breaker: 63A, 125A, 160A, 250A, 400A, 630A, 800A,
1000A, 1250A, 1600A
NXM series moulded case circuit breaker
▪ Rated operational voltage: Ue : 220V/230V/240V, 380V/400V/415V, 500V , 690V
▪ Breaking capacity code: E, S, F, H
▪ Number of poles: 2P, 3P, 4P
▪ Release type:thermal magnetic fixed type; magnetic fixed type; electronic type.
▪ Installation method: Fixed type; plug-in type

NXMS-250H/3300

Nameplate interpretation
NXM-250S/4300A
1
1 Product type: Frame size; breaking capacity; poles number
In:250A
2
Ui:800V 2 In: Rated operational current
3 6
50/60Hz
4 7 3 Ui: Rated insulation voltage
5 Ii:10In 8

4 Frequency of A.C.
9
ZHEJIANG CHINT ELECTRICS CO.,LTD
5 Ii: 10In Multiple of current of transient behavior
6 Uimp: Rated impulsive withstand voltage
7 Cat A: Utilization category of breaker
8 +40℃ : Ambient temperature
9 Electrical symbol for circuit breaker with isolating function
Ue Icu/Ics
10 (V) (kA)
12 10 Ue: Rated operational voltage
220/230/240 50/30
380/400/415 36/20
11 The product is in conformity with standard IEC/EN 60947.2
IT 12 Icu/Ics: Ultimate short circuit breaking capacity/Service short circuit breaking capacity
IEC/EN 60947-2

11 Arc isolation board must be installed

NXM Nameplate of thermomagnetic

stationary molded case circuit breaker
 Overview Moulded CaseNXM MCCB
Circuit Breakers P- 119
P- 004

1 Product type: Frame size; breaking capacity; poles number

2 In: Rated operational current
NXM-250S/4300A 3 IR: Long-time-delay setting current range
1
In:250A 125A~250A
2 Ui:800 Uimp:8kV
4 Ui: Rated insulation voltage

M
3 50/60Hz Cat A 6
5 Frequency of A.C.
4 Ii:10In 7

5
6 Uimp: Rated impulsive withstand voltage

ZHEJIANG CHINT ELECTRICS CO.,LTD

9 7 Cat A: Utilization category of breaker
8 Electrical symbol for circuit breaker with isolating function
9 Ue: Rated operational voltage
10 The product is in conformity with standard IEC/EN 60947.2
11 Icu/Ics: Ultimate short circuit breaking capacity/Service short circuit
Ue Icu/Ics breaking capacity
10 (V) (kA)
12
220/230/240 50/30
380/400/415 36/20

IEC/EN 60947-2 IT

11 Arc isolation board must be installed

Nameplate of NXMS electronic

molded case circuit breaker

Electronic release

Run ....0.9Ir
1.2Ir
PTU
160 180 4 5 6 8 t
0.5 1 150 60 80 3 4 10
200 6 tr
140 225 2 8 3 12
OFF OFF 12 100 1.5 OFF 2 OFF
125 250 0.3s
N×(In) Ir(A) tr(S) Isd (Ir ) Ii (xIn)
r r I

1 2 3 4 5 6 7

1 PTU interface
2 Neutral pole protection current setting, with 2 steps of current that is
adjustable and can be turned off (OFF)
3 Rated current setting with 8 steps
4 Long-time-delay (s) setting with 4 steps
5 Short-time-delay current Isd setting with 7 steps that is adjustable and can be
turned off (OFF)
6 Instantaneous action current Ii setting with 7 steps and that can be turned off (OFF)

7 Current-time protection curve

 P- 120 MCCB NXM

NXM series moulded case circuit breaker

Model definition and description

NXM 160 S P 4 300

Code of release
Product Breaking capacity Operation way Number of
Frame size code type and inner
code code2) code poles code
accessories3)

63A E: 15kA No code: 2: 2 poles First number

NXM: moulded
S: 25kA direct handle represents the
case circuit 3: 3 poles
125A F: 36kA operation release type
breaker H: 50kA 4: 4 poles
160A P: motor 2: only magnetic
E: 20kA operation type
S: 36kA
250A 3: thermal
F: 36kA Z:rotary handle magnetic type
H: 50kA operation
400A The second
E: 36kA number and the
630A S: 50kA third number are
F: 50kA codes of inner
800A H: 70kA accessories
S: 50kA
1000A
F: 50kA
H: 70kA
1250A
S: 50kA
1600A H: 70kA

Model selection examples:

NXM-160SP/4300 2 A 100 R: To order one moulded case circuit breaker with 160A frame size, 35kA breaking capacity, thermal adjustable and
magnetic fixed release, with motor-driven mechanism, 4 poles, with no inner accessories, motor protection, the category of four poles is A. The rated
current is 100A and rear connection.

Note: 1) The rated current of each frame can be seen in table 1.

2)
The corresponding poles number and breaking capacity related to frame size can be seen in table 2.
3)
For tripping method and inner accessories, see page 17-20.

Comparison table of frame sizes and rated current

Rated current (A) 10 15 16 20 25 30 32 40 50 60 63 65 70 75 80 90 100 110 125 140 150 160
63
125
160
250
Frame
size 400
(A) 630
800
1000
1250
1600

Comparison table of frame sizes, number of poles and breaking capacity

Frame size (A) 63 125 160 250
Number of poles 2P 3P 4P 2P 3P 4P 2P 3P 4P 2P 3P 4P
E
Frame S
size
(A) F

H
 Product selection NXM MCCB P- 121

2 A 160 Other

Usage Product with N pole Rated Code of installation

code the code is selectable current1) or secondary voltage

No code: A: there is no over current release 10A~1600A No code: front

distribution installed at pole N and the N pole will connection
protection always connect, which will not operate
R: rear
2: motor with the other three poles.
protection connection
B: there is no over current release DR: plug-in type
installed at pole N and the N pole will
rear connection
operate with the other three poles;

C : there is over current release

installed at N pole, and the N pole will
operate with the other three poles;

D : there is over current release

installed at N pole, and the N pole will
always connects, which will operate
with the other three poles

Table 1

170 180 200 225 250 280 315 320 400 500 600 630 700 800 900 1000 1250 1600

Table 2

400 630 800 1000 1250 1600

2P 3P 4P 2P 3P 4P 2P 3P 4P 2P 3P 4P 2P 3P 4P 2P 3P 4P
 P- 122 MCCB NXM

NXM series moulded case circuit breaker,code of inner accessories

□ Alarm contact, ■ Auxiliary contact, ● Shunt release, ○ Under voltage release.

Left Right
installation installation

Handle

NXM-63E/S NXM-63F/H
Accessories code
NXM-125E/S NXM-125F/H
Accessories name
Thermal magnetic
Only magnetic 3P 4P 3P 4P
release

No inner accessories 200 300

Alarm contact 208 308 □ □ □ □

Shunt release 210 310 ● ● ● ●

Auxiliary contact (1NO1NC) ■ ■ ■ ■

220 320
Auxiliary contact (2NO2NC)

Under voltage release 230 330 ● ● ● ●

Shunt release, auxiliary contact (1NO1NC) ● ■ ● ■ ● ■ ● ■

240 340
Shunt release, auxiliary contact (2NO2NC)

Under voltage release, shunt release 250 350 ● ● ● ● ● ● ● ●

Two groups of auxiliary contact (2NO2NC) 260 360

Under voltage release, auxiliary contact (1NO1NC) ● ■ ● ■ ● ■ ● ■

270 370
Under voltage release, auxiliary contact (2NO2NC)

Shunt release, alarm contact 218 318 ● ■ ● ■ ● ■ ● ■

Auxiliary contact (1NO1NC),alarm contact ■ ■ ■ ■

■ ■ ■ ■
228 328
Auxiliary contact (2NO2NC), alarm contact

Under voltage release, alarm contact 238 338 ● ● ● ● ● ● ● ●

Shunt release, auxiliary contact (1NO1NC), alarm 248 ● ■ ● ■ ● ■ ● ■

348 ■ ■ ■ ■
contact

Two groups of auxiliary contact (2NO2NC), alarm 268 368

contact

Under voltage release, auxiliary contact (1NO1NC), ■ ■ ■ ■

278 378 ● ■ ● ■ ● ■ ● ■
alarm contact
 NXM MCCB P- 123

NXM-160E/S NXM-160F/H

3P 4P 3P 4P

□ □ □ □

● ● ● ●

■ ■ ■ ■

■ ■ ■ ■

● ● ● ●

■ ● ■ ● ■ ● ■ ●

■ ● ■ ● ■ ● ■ ●

● ● ● ● ● ● ● ●

■ ■ ■ ■ ■ ■ ■ ■

● ■ ● ■ ● ■ ● ■

● ■ ● ■ ● ■ ● ■

■ ● ■ ● ■ ● ■ ●

■ ■ ■ ■
■ ■ ■ ■

■ ■ ■ ■
■ ■ ■ ■

● ■ ● ■ ● ■ ● ■

■ ● ■ ● ■ ● ■ ●
■ ■ ■ ■

■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■

■ ● ■ ● ■ ● ■ ●
■ ■ ■ ■
 P- 124 MCCB NXM

(Continued from the table above)

Accessories code NXM-250E/S NXM-250F/H

Accessories name
Thermal magnetic
Only magnetic 3P 4P 3P 4P
release

No inner accessories 200 300

Alarm contact 208 308 ■ ■ ■ ■

Shunt release 210 310 ● ● ● ●

Auxiliary contact (1NO1NC) ■ ■ ■ ■

220 320
Auxiliary contact (2NO2NC) ■ ■ ■ ■

Under voltage release 230 330 ● ● ● ●

Shunt release, auxiliary contact (1NO1NC) ● ■ ● ■ ● ■ ● ■

240 340
Shunt release, auxiliary contact (2NO2NC) ● ■ ● ■ ● ■ ● ■

Under voltage release, shunt release 250 350 ● ● ● ● ● ● ● ●

Two groups of auxiliary contact (2NO2NC) 260 360 ■ ■ ■ ■ ■ ■ ■ ■

Under voltage release, auxiliary contact (1NO1NC) ● ■ ● ■ ● ■ ● ■

270 370
Under voltage release, auxiliary contact (2NO2NC) ● ■ ● ■ ● ■ ● ■

Shunt release, alarm contact 218 318 ■ ● ■ ● ■ ● ■ ●

■ ■ ■ ■
Auxiliary contact (1NO1NC), alarm contact ■ ■ ■ ■
228 328
■ ■ ■ ■
Auxiliary contact (2NO2NC), alarm contact ■ ■ ■ ■

Under voltage release, alarm contact 238 338 ● ■ ● ■ ● ■ ● ■

Shunt release, auxiliary contact (1NO1NC), ■ ■ ■ ■

248 348 ■ ● ■ ● ■ ● ■ ●
alarm contact

Two groups of auxiliary contact (2NO2NC), ■ ■ ■ ■

268 368 ■ ■ ■ ■ ■ ■ ■ ■
alarm contact

Under voltage release, auxiliary contact (1NO1NC), ■ ■ ■ ■

278 378 ● ■ ● ■ ● ■ ● ■
alarm contact
 NXM MCCB P- 125

NXM-400E/S/F/H NXM-800S/F/H
NXM-1250S/H NXM-1600S/H
NXM-630E/S/F/H NXM-1000S/H

3P 4P 3P 4P 3P 4P 3P 4P

■ ■ ■ ■ ■ ■ ■ ■

● ● ● ● ● ● ● ●

■ ■ ■ ■ ■ ■ ■ ■

■ ■ ■ ■ ■ ■ ■ ■

● ● ● ● ● ● ● ●

■ ● ■ ● ■ ● ■ ● ● ● ● ●
■ ■ ■ ■

■ ● ■ ● ■ ● ■ ● ● ● ● ●
■ ■ ■ ■

● ● ● ● ●
●

■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■

■ ● ■ ● ● ■ ● ■ ● ● ● ●
■ ■ ■ ■

● ■ ● ■ ● ■ ● ■ ● ● ● ●
■ ■ ■ ■

■ ● ■ ● ■ ● ■ ● ● ■ ● ■ ● ■ ● ■

■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■

■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ■ ■

■ ● ■ ● ● ■ ● ■ ● ■ ● ■ ● ■ ● ■

■ ■ ■ ■ ● ● ● ●
■ ● ■ ● ■ ● ■ ● ■ ■ ■ ■ ■ ■ ■ ■

■ ■ ■ ■ ■ ■
■ ● ■ ● ■ ■ ■ ■ ■ ■ ■ ■

■ ● ■ ● ● ■ ● ■ ● ● ● ●
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
 P- 126 MCCB NXM

Technical Parameters

NXM series moulded case circuit breaker

Frame Size, rated current Inm (A) 63 125 160 250

10,16,20,25,30,32,
10,16,20,25,30, 32,40,50,60,63,70,75,80,
Rated current In (A), 40℃ , 55℃ 40,50,60,63,70,75, 160,170,180,200,225,250
32,40,50,60,63 100,125,140,150,160
80,100,125

Rated insulation voltage Ui(V) 800 800 800 800

Rated impulse withstand voltage Uimp(kV) 8 8 8 8
Rated operational voltage Ue(V), AC50/60Hz 220/230/240, 380/400/415/500 220/230/240, 380/400/415/500 220/230/240, 380/400/415 220/230/240, 380/400/415

Breaking capacity code E S F H E S F H E S F H E S F H

2P - - - - - - - -
Number of poles 3P
4P
AC220/230/240V 18 36 50 75 18 36 50 75 40 50 50 75 40 50 50 75
Rated ultimate short circuit
AC380/400/415V 15 25 36 50 15 25 36 50 20 36 36 50 20 36 36 50
breaking capacity Icu (kA)
AC500V - - 15 25 - - - - - - - - - - - -

AC220/230/240V 18 18 50 50 18 18 50 50 30 30 50 50 30 30 50 50
Rated service short circuit
breaking capacity Ics (kA) AC380/400/415V 15 15 36 36 15 15 36 36 20 20 36 36 20 20 36 36

AC500V - - 15 25 - - - - - - - - - - - -

In conformity with standards IEC/EN 60947-2

Utilization category A A A A
Isolation function
Ambient temperature -35℃ ~+70℃
Arcing distance ≤50 ≤50 ≤50 ≤50
Without maintenance 20000 20000 20000 20000
Mechanical life (times)
With maintenance 40000 40000 40000 40000
Electricallife (times) AC415V, In 10000 10000 10000 10000

Magnetic Distribution protection

Release type and release Motor protection
protection type
Thermal magnetic Distribution protection
release Motor protection
Auxiliary contact
Alarm contact
Auxiliary contact, alarm contact
Shunt release
Under voltage release
Accessories
Manual operational mechanism
Motor-driven mechanism
Rear connection
Plug-in type
Extending terminal bonding bar
For special use of prepaid ammeter - - - -
Derivative product
Overload alarm non-trip - - -
Width (2P/3P/4P) 56/78/103 56/78/103 63/90/120 78/105/140
Dimension and size(mm) 135 135 155 165
Height
Width (w) X height (H)X depth(D)
Depth (E/S/F/H type) 71/71/81/81 71/71/81/81 75.5/75.5/91/91 77/77/102/102
 NXM MCCB P- 127

400 630 800 1000 1250 1600

250,280,300,315,320,350,400 400,450,500,600,630 630, 700, 800 800,900,1000 1000, 1250 1000, 1250,1600

1000 1000 1000 1000 1000 1000

12 12 12 12 12 12
220/230/240, 380/400/415 220/230/240, 380/400/415 220/230/240, 380/400/415 220/230/240, 380/400/415 220/230/240, 380/400/415 220/230/240, 380/400/415

E S F H E S F H S F H S H S H S H
- - - - - - - - - - - - - - - - -

50 75 75 100 50 75 75 100 75 75 100 75 100 75 100 75 100

36 50 50 70 36 50 50 70 50 50 70 50 70 50 70 50 70
- - - - - - - - - - - - - - - - -

50 50 75 75 50 50 75 75 50 75 75 50 75 50 75 50 75
36 36 50 50 36 36 50 50 36 50 50 36 50 36 50 36 50
- - - - - - - - - - - - - - - - -

A A A A A A

≤100 ≤100 ≤100 ≤100 ≤100 ≤100

10000 10000 8000 5000 5000 5000
20000 20000 10000 10000 10000 10000
8000 8000 5000 2500 2500 2500

- - - -
- - - -

- - - - - - - - - - -
- - - -
140/185 140/185 182/240 210/280 210/280 210/280
257 257 270 280 370 370
108.5/108.5/108.5/108.5 108.5/108.5/108.5/108.5 114/114/114 118/118 153/153 1600A:158/158
<1600A:153/153
 P- 128 MCCB NXM

Protection Feature

Distribution protection –Only magnetic release

Only magnetic Setting of short circuit Setting value of short circuit protection
Frame size Inm(A) Rated current In(A) current Ii(A) and allowance Release time
release protection current

63 10~63 Fixed 10In, ±20%

125 10~125 Fixed 10In, ±20%

160 32~160 Fixed 10In, ±20%

250 125~250 Fixed 10In, ±20%

400 250~400 Fixed 10In, ±20%

Short circuit Instantaneous
protection action
630 400~630 Fixed 10In, ±20%

800 630~800 Fixed 10In, ±20%

1000 800~1000 Fixed 10In, ±20%

1250 1000~1250 Adjustable Ii: (7-8-9-10) In

1600 1000~1600 Adjustable Ii: (7-8-9-10) In

Setting of neutral pole Setting value of neutral pole short circuit

Frame size Inm(A) Rated current In(A) protection current (A) and allowance Release time
protection current

63 10~63 Fixed Ii , ±20%

125 10~125 Fixed Ii , ±20%

160 32~160 Fixed Ii , ±20%

Neutral pole
protection Instantaneous
(code of N 250 125~250 Fixed Ii , ±20% action
poles C/D)
400 250~400 Fixed Ii , ±20%
630 400~630 Fixed Ii , ±20%
800 630~800 Fixed Ii , ±20%
1000 800~1000 Fixed Ii , ±20%
1250 1000~1250 Adjustable Ii: (7-8-9-10)In
1600 1000~1600 Adjustable Ii: (7-8-9-10)In
 NXM MCCB P- 129

Distribution protection—Thermal magnetic release

Thermal magnetic Setting of overcurrent

release Frame size Inm(A) Rated current In(A) protection Release feature

I2t=constant
63A~1000A 10A~1000A Fixed 1.05In(cold state), 2h non-trip(In ＞ 63A), 1h non-trip(In≤63A)
Overload protection
1.30In(heat state), 2h trip(In ＞ 63A), 1h trip(In≤63A)

1600 1000A~1600A Adjustable Ir adjustable range: (0.7-0.8-0.9-1)In

Thermal magnetic Setting of short circuit Setting value of short circuit protection
release Frame size Inm(A) Rated current In(A) protection current current Ii(A) and allowance Release time

63 10~63 Fixed 10In , ±20%

125 10~125 Fixed 10In , ±20%

160 32~160 Fixed 10In , ±20%

250 125~250 Fixed 10In , ±20%

400 250~400 Fixed 10In , ±20%

Short circuit Instantaneous
protection action
630 400~630 Fixed 10In , ±20%

800 630~800 Fixed 10In , ±20%

1000 800~1000 Fixed 10In , ±20%

1250 1000~1250 Adjustable Ii : (7-8-9-10) In

1600 1000~1600 Adjustable Ii : (7-8-9-10) In

Setting of neutral pole Setting value of neutral pole overload

Frame size Inm(A) Rated current In(A) protection current protection current(A)setting value
neutral pole short circuit protection current(A)

63 10~63 Fixed Ir ,Ii , ±20%

125 10~125 Fixed Ir ,Ii , ±20%

160 32~160 Fixed Ir ,Ii , ±20%

250 125~250 Fixed Ir ,Ii , ±20%

Neutral pole 400 250~400 Fixed Ir ,Ii , ±20%

protection
(code of N pole C/D) 630 400~630 Fixed Ir ,Ii , ±20%

800 630~800 Fixed Ir ,Ii , ±20%

1000 800~1000 Fixed Ir ,Ii , ±20%

1250 1000~1250 Adjustable Ii : (7-8-9-10) In

1600 1000~1600 Adjustable Ii : (7-8-9-10) In

 P- 130 MCCB NXM

Protection Feature

Distribution protection—Electronic release

Electronic release Frame size Inm(A) Rated current In(A) Setting of overcurrent protection IR (A) Release feature/time

32 16-18-20-22-25-28-30-32

63 32-36-40-45-50-56-60-63
160
125 63-70-75-80-90-100-110-125

160 80-90-100-110-125-140-150-160
I2t=constant
250 250 125-140-150-160-180-200-225-250 1.05Ir, no action within 2h
Overload long-time-delay
400 400 200-225-250-280-300-315-350-400 1.3Ir, action with 1h
protection
630 630 400-450-480-500-530-560-600-630 2Ir, tr=(12-60-80-100)s, Inm ＜ 400A

800 630-660-680-700-720-750-780-800 2Ir, tr=(12-60-100-150)s, Inm≥400A

1000
1000 630-680-720-780-820-900-950-1000

1250 1250 630-700-800-900-1000-1100-1200-1250

1600 1600 800-900-1000-1100-1250-1400-1500-1600

Action allowance ±10%

Short circuit short-time-delay

All series 32~1600 Isd=(1.5-2-3-4-5-6-8)Ir+OFF
protection tsd=0.3,±0.06s

Action allowance ±15%

Instantaneous protection 160~1600 32~1600 Ii=(2-3-4-6-8-10-12)Ir+OFF

Instantaneous action
Action allowance ±15%

Neutral pole protection

All series 32~1600 IrN=(0.5 ,1)In+OFF, Adjustable
(code of four pole C/D)

Indication of overload All series 32~1600 Ir0=1.2IR

 NXM MCCB P- 131

Distribution protection—Only magnetic release + residual current release

Setting value of short circuit

Only magnetic Rated Setting of short circuit
Frame size Inm(A) protection current Ii(A) Release time
release current In(A) protection current and allowance

125 10~125 Fixed 10I±20%n ,

160 125,160 Fixed 10I±20%n ,

Short circuit 250 160~250 Fixed 10I±20%n ,

Instantaneous action
protection
400 315~400 Fixed 10I±20%n ,

630 400~630 Fixed 10I±20%n ,

800 630~800 Fixed 10I±20%n ,

Residual current Residual current Setting value of rated residual

Frame size Inm(A) Release time
Release type release type current IΔn (A)

Non delay: single grade and

30/50/100/200/300/500
non-adjustable

Three grades and adjustable A/B/C/D

125/160/250 AC Type
Delay type: single grade and Non-delay type 5IΔn
50/100/200/300/500 ≤0.4
non-adjustable maximum breaking time(s)

Residual action Three grades and adjustable B/C/D Delay type 2IΔn limit
non-driving time (s) 0.1 0.2 0.3
current protection Non delay: single grade and Adjustable
50/100/200/300/500/1000
non-adjustable Delay type 2IΔn maximum
breaking time(s) 0.3 0.4 0.5
Three grades and adjustable B/C/D/E Adjustable
400/630 AC Type
Delay type: single grade and
50/100/200/300/500/1000
non-adjustable

Three grades and adjustable B/C/D/E

 P- 132 MCCB NXM

Protection Feature

Distribution protection—Thermal magnetic release+ residual current release

Thermal magnetic Rated current Overload protection current

Frame size Inm(A) Release feature
release In(A) Setting

I2t=constant
Overload protection All series 10A~800A Fixed 1.05 In(cold state), 2h non-release(In ＞ 63A),1h non-release(In≤63A)
1.30 In(heat state), 2h release(In ＞ 63A),1h release(In≤63A)

Setting value of short circuit

Rated current Setting of short circuit
Frame size I(A)nm protection current I(A) iand Release time
I(A)n protection current
allowance

125 10~125 Fixed 10I±20%n ,

160 125,160 Fixed 10I±20%n ,

Short circuit
160~250 10I±20%n , Instantaneous action
protection 250 Fixed

400 315~400 Fixed 10I±20%n ,

630 400~630 Fixed 10I±20%n ,

Setting value of rated residual

Frame size I(A)nm Residual current release type Release time
current I(A)Δn

Non delay: single grade and

30/50/100/200/300/500
non-adjustable

Three grades and adjustable A/B/C/D

125/160/250 AC type
Delay type: single grade and
50/100/200/300/500 Non-delay type 5IΔn maximum
non-adjustable ≤0.4
Residual current breaking time(s)

Three grades and adjustable B/C/D Delay type 2IΔn limit non-driving
protection time (s) 0.1 0.2 0.3
Non delay: single grade and Adjustable
50/100/200/300/500/1000
non-adjustable Delay type 2IΔn maximum
breaking time(s) 0.3 0.4 0.5
Adjustable
Three grades and adjustable B/C/D/E
400/630 AC type
Delay type: single grade and
50/100/200/300/500/1000
non-adjustable

Three grades and adjustable B/C/D/E

 NXM MCCB P- 133

Motor protection—Only magnetic release

Only magnetic Setting of short circuit Setting value of short circuit protection
Frame size I(A)nm Rated current I(A)n Release time
release protection current current I(A) and allowancei

63 10~63 Fixed 12In , ±20%

125 10~125 Fixed 12In , ±20%

160 32~160 Fixed 12In , ±20%

Short circuit
250 125~250 Fixed 12In , ±20% Instantaneous action
protection

400 250~400 Fixed 12In , ±20%

630 400~630 Fixed 12In , ±20%

800 630~800 Fixed 12In , ±20%

Setting of neutral pole Setting value of neutral pole overload protection current(A)
Frame size Inm(A) Rated current In(A)
protection current Setting value neutral pole short circuit protection current(A)

63 10~63 Fixed Ii ,Ir ,±20%

125 10~125 Fixed Ii ,Ir ,±20%

125,160 Fixed Ii ,Ir ,±20%

160
Neutral pole
125,160 Fixed Ii ,Ir ,±20%
protection
(code of N pole
250 160~250 Fixed Ii ,Ir ,±20%
C/D)

400 315~400 Fixed Ii ,Ir ,±20%

630 400~630 Fixed Ii ,Ir ,±20%

800 630~800 Fixed Ii ,Ir ,±20%

 P- 134 MCCB NXM

Protection Feature

Motor protection—Thermal magnetic release

Thermal magnetic Setting of overcurrent

Frame size I (A)nm Rated current I (A)n Release feature
release protection

I2t=constant
1.0In(cold state), ＞ 2h non release
1.2In(hot state), ≤2h release
Overload protection 125~800 25~630A Fixed
7.2In(hot state),4s≤T≤10s, 10A≤In≤225A
6s≤T≤20s, 225A ＜ In≤630A(including 800A frame 630A)
Trip class: 10(≤160A), 20(160A ＜ In≤630 A)

Thermal magnetic Setting of short circuit Setting value of short circuit protection
Frame size I (A)nm Rated current I (A)n Release time
release protection current current I(A) and allowancei

63 10~63 Fixed 12In ,±20%

125 10~125 Fixed 12In ,±20%

160 32~160 Fixed 12In ,±20%

Short circuit protection 250 125~250 Fixed 12In ,±20% Instantaneous action

400 250~400 Fixed 12In ,±20%

630 400~630 Fixed 12In ,±20%

800 630~800 Fixed 12In ,±20%

Setting of neutral pole Setting value of neutral pole overload protection current(A)
Frame size I (A)nm Rated current I (A) n
protection current Setting value neutral pole short circuit protection current(A)

63 10~63 Fixed Ir ,Ii , ±20%

125 10~125 Fixed Ir ,Ii , ±20%

125,160 Fixed Ir ,Ii , ±20%

160

Neutral pole protection 125,160 Fixed Ir ,Ii , ±20%

(code of N pole C/D)

250 160~250 Fixed Ir ,Ii , ±20%

400 315~400 Fixed Ir ,Ii , ±20%

630 400~630 Fixed Ir ,Ii , ±20%

800 630~800 Fixed Ir ,Ii , ±20%

 NXM MCCB P- 135

Motor protection—Electronic release

Electronic release Frame size Inm (A) Frame size Inm (A) Setting of overcurrent protection Ir (A) Release feature/time

32 16-18-20-22-25-28-30-32

63 32-36-40-45-50-56-60-63
I2t=constant
100 63-70-75-80-85-90-95-100 1.05Ir No actuation within 2h
160
125 63-70-75-80-90-100-110-125 1.2Ir Actuation within 1h
Overload long-time- delay Release class 10A 10 20 30
160 80-90-100-110-125-140-150-160
protection 1.5Ir 53 107 178 267
200 100-125-140-150-160-170-180-200
2Ir 30 60 100 150
250 250 125-140-150-160-180-200-225-250 7.2Ir 2.3 4.6 7.7 11.6
Delay time accuracy: ±20%
400 400 200-225-250-280-300-315-350-400

630 630 400-450-480-500-530-560-600-630

Operation allowance ±20%

Short circuit short-time-
160~630 32~630 Isd=(1.5-2-3-4-5-6-8)Ir+OFF
delay protection
tsd=0.3,±0.06s
Operation allowance ±15%

Instantaneous protection 160~630 32~630 Ii=(2-4-6-8-10-12-14)Ir +OFF

Instantaneous action
Operation allowance ±15%
Neutral pole protection
160~630 32~630 IrN = (0.5, 1)Ir +OFF, adjustable
(N pole code C/D)
Overload indication 160~630 Ir0 =1.2Ir
 P- 136 MCCB NXM

Protection Feature

Motor protection—Only magnetic release + r esidual current release

Only magnetic Setting of short circuit Setting value of short circuit protection
Frame size I (A)nm Rated current I (A)n Release time
release protection current current I (A) and allowancei
125 10~125 Fixed 12In ,±20%
160 125,160 Fixed 12In ,±20%
Short circuit
250 160~250 Fixed 12In ,±20% Instantaneous action
protection
400 315~400 Fixed 12In ,±20%
630 400~630 Fixed 12In ,±20%

Residual current Residual current Setting value of rated

Frame size Inm (A) Release time
Release type release type residual current IΔn(A)

Non delay: single grade and non-

30/50/100/200/300/500
adjustable

Three grades and adjustable A/B/C/D

125/160/250 AC type Non-delay type 5IΔn maximum ≤0.4
Delay type: single grade and non- 50/100/200/300/500 breaking time(s)
adjustable
Delay type 2IΔn limit non-driving
Residual action Three grades and adjustable B/C/D time (s) 0.1 0.2 0.3
Adjustable
current protection
Non delay: single grade and non- 50/100/200/300/500/1000
adjustable Delay type 2IΔn maximum
breaking time(s) 0.3 0.4 0.5
Three grades and adjustable B/C/D/E Adjustable
400/630 AC type
Delay type: single grade and non-
50/100/200/300/500/1000
adjustable

Three grades and adjustable B/C/D/E

Motor protection—Thermal magnetic release+ r esidual current release

Thermal magnetic Overload protection

Frame size Inm (A) Rated current In (A) Release feature
release current setting

I2t=constant
1.0In (cold state),>2h non release

1.2In (hot state),≤2h release

1.5In (hot state),≤4min, 10A≤In≤225A

Overload protection 125~800 25A~630A Stationary
≤8min, 225A ＜ In≤630A (including800A housing 630A)

7.2In (hot state),4s≤T≤10s, 10A≤ In≤225A

6s≤T≤20s, 225A ＜ In≤630A (including800A housing 630A) release class:

10 (≤160A), 20 (160A ＜ In≤630A)

 NXM MCCB P- 137

Motor protection—Thermal magnetic release+ residual current release

Setting value of short circuit

Thermal magnetic Setting of short
Frame size Inm(A) Rated current In (A) protection Release time
release circuit protection current
current Ii (A) and allowance

63 10~63 Stationary 12In ,±20%

125 10~125 Stationary 12In ,±20%

125,160 Stationary 12In ,±20%

160
Short circuit
125,160 Stationary 12In ,±20% Instantaneous action
protection

250 160~250 Stationary 12In ,±20%

400 315~400 Stationary 12In ,±20%

630 400~630 Stationary 12In ,±20%

Residual Residual current Setting value of rated

Frame size Inm(A) current Trip time
release type release type residual current IΔn (A)

Non delay: single grade and

non-adjustable

Three grades and adjustable

125/160/250 AC type
Non-delay type 5IΔn maximum ≤0.4
Delay type: single grade and breaking time(s)
non-adjustable 30/50/100/200/300/500
A/B/C/D
Delay type 2IΔn limit non-driving
50/100/200/300/500
Three grades and adjustable time (s) 0.1 0.2 0.3
Residual current B/C/D Adjustable
protection 50/100/200/300/500/1000
Non delay: single grade and
B/C/D/E
non-adjustable Delay type 2IΔn maximum
50/100/200/300/500/1000 0.3 0.4 0.5
breaking time(s)
B/C/D/E
Three grades and adjustable Adjustable
400/630 AC type
Delay type: single grade and
non-adjustable

Three grades and adjustable

 NXM MCCB P- 138

Power loss table

3/4pole total power loss

Product model Making current(A) Single pole resistance (mΩ)
Front connection Rear connection Plug-in rear connection
NXM-63 63 0.75 24 27 28
NXM-125 125 0.72 28 31 32
NXM-160 160 0.4 60 87 89
NXM-250 250 0.2 63 90 90
NXM-400 400 0.15 68 72 100
NXM-630 630 0.14 180 190 200
NXM-800 800 0.08 200 230 290
NXM-1000 1000 0.06 250 280 300
NXM-1600 1600 0.027 280 - -
NXMS-160 160 0.38 40 50 62
NXMS-250 250 0.3 50 75 86
NXMS-400 400 0.13 58 87 90
NXMS-630 630 0.07 110 120 130
NXMS-1000 1000 0.05 140 155 167
NXMS-1600 1600 0.027 250 - -
NXMLE-160 160 0.73 60 87 89
NXMLE-250 250 0.27 63 90 90
NXMLE-400 400 0.11 68 72 100
NXMLE-630 630 0.09 180 190 200
NXHM-63 63 0.4 28 31 35
NXHM-125 125 0.6 60 87 87
NXHM-160 160 0.2 40 50 62
NXHM-250 250 0.18 50 75 86
NXHM-400 400 0.1 58 87 90
NXHM-630 630 0.08 110 120 130
NXHM-800 800 0.05 200 230 290
NXHM-1000 1000 0.02 140 155 167

Parameter table of connecting cable/copper bar

The reference section of connecting cable/copper bar with different rated current is as follows.

Rated current (A) Section of wire (mm2)

10 1.5
16, 20 2.5
25 4.0
32 6.0
40, 50 10
63 16
80 25
100 35
125, 140 50
160 70
180, 200, 225 95
250 120
280, 315, 320, 350 185
400 240
 P- 139 MCCB NXM

Cable Copper bar

Rated current (A)
Section (mm2) Quantity Width × thickness (mm) Quantity
500 150 2 30×5 2
630 185 2 40×5 2
50×5 2
700, 800 240 2
50×10 1
50×5 3
900, 1000 - -
63×10 1
50×5 3
1250 - -
40×10 2
60×5 4
1600 - -
60×10 2

The above reference section is the reference value under 40 degrees operating environmental temperature.
The recommended value of tightening torque of different housing current connecting cable/copper bar is as follows:

Rated current (A) 63A/125A 160A 250A/320A 400A/630A 800A 1000A 1250A/1600A
Torque (N m)1) 3/64) 10 12 30 30 40 30
Torque (N m)2) 3/64) 10 12 30 30 40 30
Torque (N m)3) 3/64) 10 12 30 30 40 30

1)
Tighten the torque of busbar (or extension busbar/connection lug) in case of connecting with the body directly.
2)
Tighten the torque of connecting terminal behind the stationary breaker/tighten the torque of connecting terminal of plug in breaker.
3)
Tighten the torque of extension busbar of terminal on the plug-in pedestal.
4)
Value of torque is 3 for 10A~63A of frame current 63 and 125A breaker, value of torque is 6 for 70A~125A for frame current 125A breaker.
 NXM MCCB P- 140

NXM- 63E/S/F/H, 125E/S/F/H, NXHM- 63, 125

Front connection, dimension (mm)

75 D2
50 50 D1
25 25 25 S:21 D
H:31

49

49
2P 3P 4P
49

1 3 5LINE 1 3 5 N
1 3LINE LINE
27.5

X X X X
ON

ON

ON
121

121

121

135
55.5

55.5
55.5

27.5

27.5
OFF

OFF

OFF
LOAD 6LOAD LOAD
2 4 2 4 2 4 6 N

Y Y Y
18 18 18
26 23
26
Z
56 78 103

NXMLE-125S/F/H

Front connection, dimension (mm)

75 D2
50 D1
50 25
25 25 21 D
49

49

1PN/2P 3PN/4P

49
3P

1 N 1 3 5 1 3 5 N
LINE LINE LINE
38

38

38
ON

ON

ON
55.5

55.5

55.5

X X X X

150
142

142

142
OFF

OFF

OFF

1
LOAD
N 2 4 LOAD
6 2 4 6 N
LOAD

Y Y Y
18 18 18
23 23 23
78 Z
56 103

NXM-63E/F/S/H, 125E/F/S/H, NXHM-63,125,NXMLE-125F/S/H

Installation size of baseplate

50
25 25
12.5 12.5 12.5
1PN/2P 3P 3 4PN/P

2-Φ4.5 4-Φ4.5 6-Φ4.5

(H1/2)

(H1/2)

(H1/2)

X X X
H1

H1
H1

Y Y Y

Specification H1
D1 D2 D Remark
and model 1PN/2P 3P 3PN/4P
NXM-63E/S、125E/S 71 90 7 117 117 117 2P/3P/4P
NXM-63F/H、125F/H 81 100 7 - 117 117 3P/4P
NXMLE-125S 71 90 7 138 138 138 1PN/2P/3P/3PN/4P
NXMLE-125F/H 81 100 7 - 138 138 3P/3PN/4P
NXHM-63、125 71 90 7 - 117 117 3P/4P
 P- 141 MCCB NXM

NXM-63E/S/F/H, 125E/S/F/H, NXMLE-125S/F/H, NXHM-63, 125

Rear connection (mm)

100.5
100.5
67.5
67.5 3PN/4P
3P

H3
H2
Y

50
Y
50

50
M8
M8

NXM-63E/S/F/H, 125E/S/F/H, NXMLE-125S/F/H, NXHM-63, 125

Rear connection (mm)

75
25
50 50
25
12.5 12.5
3P 3PN/4P

41.7

X X
H3

H3
H4

H4

4-Φ4.5 6-Φ4.5

6 -Φ11.8 8 -Φ11.8

Y Y

Specification and model H2 H3 H4 Remark

NXM-63E/S/F/H, 125E/S/F/H 135 121 117 3P/4P
NXMLE-125S/F/H 136 142 138 3P/3PN/4P
NXHM-63, 125 135 121 117 3P/4P

NXM-63E/S/F/H, 125E/S/F/H, NXMLE-125S/F/H, NXHM-63, 125

Plug-in rear connection (mm)

50.5
44.5 106(3PN/4P)
29.5 80(3P)
8.5 40
3PN/4P
3PN/4P
M5

25
X 50 25
X
H7
H8
H6
H5

(H5)

H10
H9

4-Φ5.5
M6
2

Specification and model H5 H6 H7 H8 H9 H10 Remark

NXM-63E/S/F/H, 125E/S/F/H 60 75 121 159 92 144 3P/4P
NXMLE-125S/F/H 60 98 142 183 112 165 3P/3PN/4P
NXHM-63, 125 60 75 121 159 92 144 3P/4P
 NXM MCCB P- 142

NXM-63E/S/F/H, 125E/S/F/H, NXMLE-125S/F/H, NXHM-63, 125

Cabinet gate hole (small) size (mm)

NXM-63, 125
NXHM-63, 125 NXMLE-125

25 25 25
1PN/2P 3P 3PN/4P

X X X X X

57.5
57.5
D3 ≤2 D3 ≤2 57.5
Y Y Y

Z Z

NXM-63E/S/F/H, 125E/S/F/H, NXMLE-125S/F/H, NXHM-63, 125

Cabinet gate hole (large) size (mm)

NXM-63、125
NXHM-63、125 NXMLE-125
58 80 105
16.5 40 40 D
1PN/2P 3P 3PN/4P

X X X X X
H11

H11
H11

≤2 ≤2
D4 D4 Y Y Y
Z Z

Specification H11
D3 D4 Remark
and model 1PN/2P 3P 3PN/4P
NXM-63E/S、125E/S 71.5 64.5 88 88 88 2P/3P/4P
NXM-63F/H、125F/H 81.5 74.5 - 88 88 3P/4P
NXMLE-125S 71 64 110 110 110 1PN/2P/3P/3PN/4P
NXMLE-125F/H 81 74 - 110 110 3P/3PN/4P
NXHM-63、125 71 64 - 87.5 87.5 3P/4P

NXM-160E/S/F/H, NXHM-160

Rear connection, dimension (mm)

90 D5
60 60 D6
30
30 30 24.5 D
50

50

50

2P 3P 4P

1 N 1 3 5 1 3 5 N
LINE LINE LINE
24.5

24.5

24.5

X X X X
ON

ON

ON
135

135

135
51.7

51.7
OFF

OFF

OFF

LOAD LOAD LOAD

2 N 2 4 6 2 4 6 N

Y Y Y
17 17 17
32 32 29
Z
63 90 120
 P- 143 MCCB NXM

NXMS-160F/H

Front connection, dimension (mm)

90 D5
60 60 D6
30 30 24.5 D
50

50
3P 4P

1 3 5 1 3 5 N
LINE LINE
24.5

24.5
X X X
45.5

ON

ON
135

155
135
45.5
OFF

OFF
LOAD LOAD
6 N
2 4 6 2 4

Y Y
17 17
29 29
29
Z
120 120

NXMLE-160S/F/H

Front connection, dimension (mm)

90 D5
60 30 30 D6
30 60 24.5 D
50

50
50

1PN/2P 3P 3PN/4P

1 N 1 3 5
LINE LINE
29

X X X X
ON

ON

51.7
28.5
51.7

51.7

160
140
140

27
140
OFF

OFF

LOAD LOAD
2
N
2 4 6

Y Y Y
17 17 17
29 29 29
Z
63 90 120 120

NXM-160E/S/F/H, NXMS-160F/H, NXMLE-160S/F/H, NXHM-160

Installation size of baseplate (mm)

60
30 30
15 15 15
1PN/2P R 3P R 3PN/4P R
6
6

4.5 4.5 4.5

X X X
H12

H12

H12

Y Y Y

Specification and H12

D6 D5 D Remark
model 1PN/2P 3P 3PN/4P
NXM-160E/S 75.5 96 13.5 130.5 130.5 130.5 2P/3P/4P
NXM-160F/H 91 112 13.5 - 130.5 130.5 3P/4P
NXMS-160F/H 91 112 13.5 130.5 130.5 130.5 3P/4P
NXMLE-160S 75.5 96 13.5 135.5 135.5 135.5 1PN/2P/3P/3PN/4P
NXMLE-160F/H 91 112 13.5 - 135.5 135.5 3P/3PN/4P
NXHM-160 75.5 96 13.5 - 130.5 130.5 3P/4P
 NXM MCCB P- 144

NXM-160E/S/F/H, NXMS-160F/H, NXMLE-160S/F/H, NXHM-160

Rear connection, dimension (mm)

96.5
63.5
96.5
3PN/4P
63.5
3P

60
Y Y X

H13

H14
60

60
M8
M8

NXM-160E/S/F/H, NXMS-160F/H, NXMLE-160S/F/H, NXHM-160

Plug-in rear connection, dimension (mm)

90
60
60 30
30 15 15
3P 3PN/4P

30

X X
H15
H14
H15
H14

R 6-Φ11 R 8-Φ11
6
6

4.5 Y 4.5 Y
Specification and model H13 H14 H15 Remark
NXM-160E/S/F/H 155 135 130.5 3P/4P
NXMLE-160F/H 155 135 130.5 3P/4P
NXMLE-160S/F/H 160 140 135.5 3P/3PN/4P
NXHM-160 155 135 130.5 3P/4P

NXM-160E/S/F/H, NXMS-160F/H, NXMLE-160S/F/H, NXHM-160

Plug-in back-panel wiring, outline and installation size (mm)

135
124(3PN/4P)
38 94(3P)
3P/4P 3PN 13 3P/3PN/4P 46

60 30
X
(H16)
H16

H18

X
H20
H21
M5

6- 8
M10
4

Y
Specification H16 H18 H20 H21 Remark
and model
NXM-160E/S/F/H 72 135 106 167 3P/4P
NXMLE-160F/H 72 135 106 167 3P/4P
NXMLE-160S/F/H 77 140 111 172 3P/3PN/4P
NXHM-160 72 135 106 167 3P/4P
 P- 145 MCCB NXM

NXM-160E/S/F/H, NXMS-160F/H, NXMLE-160S/F/H, NXHM-160

Cabinet gate hole (small) size (mm)

32 32 32
1PN/2P 3P 3PN/4P

X X X X

H22

H22
H22

D7
Y Y Y
≤2

NXM-160E/S/F/H, NXMS-160F/H, NXMLE-160S/F/H, NXHM-160

Cabinet gate hole (large) size (mm)

65 92 122
17.5 46
1PN/2P 3P 3PN/4P

X X X X
H23
H23
H23

D8
Y Y Y
≤2

Z Specification D7 D8 H22 H23 Remark

and model
NXM-160E/S 75.5 62 54 90 2P/3P/4P
NXM-160F/H 91 77.5 54 90 3P/4P
NXMS-160F/H 91 77.5 54 92 3P/4P
NXMLE-160S 75.5 62 54 95 1PN/2P/3P/3PN/4P
NXMLE-160F/H 91 77.5 54 95 3P/3PN/4P
NXHM-160 75.5 62 54 90 3P/4P

NXM-250E/S/F/H, NXHM-250

Front connection, dimension (mm)

105
70 70
35 D10
35 35
D9
101.5
101.5
101.5

2P 3P 4P 25 D

1 3 1 3 5 1 3 5 N
LINE LINE
NXM-320
30.5
30.5
33

x x x x
ON

ON

ON
145

145

145
56

165
56

56
OFF

OFF

OFF

LOAD LOAD
4 2 4 6 2 4 6 N
2

D9”
Y Y Y
23.5 23.5 23.5
29 29 29 Z
78 105 140
 NXM MCCB P- 146

NXMS-250F/H

Front connection, dimension (mm)

105

70 70
D10
35 35
D9

101.5

101.5
3P 4P 24.5 D

1 3 5 1 3 5 N
LINE LINE

30.5
30.5

x x x

51.5
51.5

ON

ON
145

145

165
OFF

OFF
LOAD LOAD
2 4 6 2 4 6 N

D9 ’’
Y Y
23.5 23.5
Z
29 29
105 140

NXMLE-250S/F/H

Front connection, dimension (mm)

105
70 70
D10
35 35 35
D9
101.5

101.5

101.5
1PN/2P 3P 3PN/4P 25 D

1 N 1 3 5 1 3 5 N
LINE LINE LINE
33

x
33

ON

ON

ON

x x x
56
33
56

170
150

150

150
OFF

OFF

OFF
56

LOAD LOAD LOAD

2 N 2 4 6 2 4 6 N

D9’’
Y Y Y
23.5 23.5 23.5
29 29 29 Z
78 105 140

NXM-250E/S/F/H, NXMS-250F/H,NXMLE-250S/F/H, NXHM-250

Front-panel wiring, installation size (mm)

70
35
17.5 35 17.5
1PN/2P 3P 3PN/4P

x x x
H24

H24

H24

2-Φ4.5 4-Φ4.5
6-Φ4.5

Y Y Y

Specification D9'' H24

D9 D10 D Remark
and model 125/160A 180/200A 225/250A 1PN/2P 3P 3PN/4P
NXM-250E/S 77 22.8 23 23 98 15 126 126 126 2P/3P/4P 98
NXM-250F/H 102 23 23.5 24 123 15 - 126 126 3P/4P 123
NXMS-250F/H 102 25 24 123 15 - 126 126 3P/4P 123
NXMLE-250S 77 25 24.5 99 15 131 131 131 1PN/2P/3PN/4P 98
NXMLE-250F/H 80 28 27.5 102 15 - 131 131 3P/3PN/4P 101
NXHM-250 77 25 24 98 15 - 126 126 3P/4P 122
 P- 147 MCCB NXM

NXM-250E/S/F/H, NXMS-250F/H, NXMLE-250S/F/H, NXHM-250, 320

Installation size of baseplate (mm)

108.5
108.5 67.5
67.5 3PN/4P
3P

70

H25
X X X

H26
70
M10

70
M10
NXM-250E/S/F/H, NXMS-250F/H, NXMLE-250S/F/H, NXHM-250, 320

Installation size of baseplate (mm)

105
70
70 35
3P 35 3PN/4P 17.5 17.5

35

X X
H27
H26

H27
H26

4 -Φ4.2
8 -Φ12

6 -Φ12 6 -Φ4.2
Y Y

Specification and model H25 H26 H27 Remark

NXM-250E/S/F/H 165 145 126 3P/4P
NXMS-250F/H 165 145 126 3P/4P
NXMLE-250S/F/H 170 150 131 3P/3PN/4P
NXHM-250, 320 165 145 126 3P/4P

NXM-250E/S/F/H, NXMS-250F/H, NXMLE-250S/F/H, NXHM-250, 320

Plug-in rear connection, dimension (mm)

150
132 140(3PN/4P)
47.5 105(3P)
13
3P/3PN/4P 52.5
3P/3PN/4P
M6

70 35
X 35
H28
H30

X
(H28)

H32
H33

M8

6 -Φ8
5.5

Specification and model H28 H30 H32 H33 Remark

NXM-250E/S/F/H 74 145 108 180 3P/4P
NXMS-250F/H 74 145 108 180 3P/4P
NXMLE-250S/F/H 79 144 113 185 3P/3PN/4P
NXHM-250, 320 74 139 108 180 3P/4P
 NXM MCCB P- 148

NXM-250E/S/F/H, NXMS-250F/H, NXMLE-250S/F/H, NXHM-250, 320

Cabinet gate hole (small) size (mm)

31 31 31
1PN/2P 3P 3PN/4P

X X X

H34
X
H34

H34
D11 Y Y Y
≤2
Z

NXM-250E/S/F/H, NXMS-250F/H, NXMLE-250S/F/H, NXHM-250, 320

Cabinet gate hole (large) size (mm)

80 107 142
23.5 53.5
1PN/2P 3P 3PN/4P

104
X X X
104

104

D12 Y Y Y
≤2
Z Specification and model H34 D11 D12 Remark
NXM-250E/S 58 77.5 62.8 2P/3P/4P
NXM-250F/H 58 102.5 87.8 3P/4P
NXMS-250F/H 53.5 102.5 87.8 3P/4P
NXMLE-250S 58 77.5 62.8 1PN/2P/3P/3PN/4P
NXMLE-250F/H 58 80.5 65.5 3P/3PN/4P
NXHM-250, 320 58 77.5 62.8 3P/4P

NXM-400E/S/F/H, 630E/S/F/H, NXHM-400, 630

Front connection, dimension (mm)

132
88 88
161
44 44
108.5
D13 D
104

104

3P 4P

1 3 5 1 3 5 N
LINE LINE

X X X
H34

H35

H34

H35

H36
ON

ON
OFF

OFF

LOAD LOAD
2 4 6 2 4 6 N

D14
Y Y
30 30 Z
54 54
140 185
 P- 149 MCCB NXM

NXMS-400S/F/H, 630S/F/H

Front connection, dimension (mm)

132
88 88
44 160
44
107.5
105.5

105.5
D13 D
3P 4P

1 3 5 1 3 5 N
LINE LINE

H37
H37

H36
H35

X X X

H34
H34

ON

ON

H35
OFF

OFF
LOAD LOAD
2 4 6 2 4 6 N

D14
Y Y
30 30 Z
54 54
140 185

NXMLE-400S/F/H, 630S/F/H
Front connection, dimension (mm)

132
88 88 160
105.5

105.5

44 44 107.5
D13 D
3P 3PN/4P

1 3 5 1 3 5 N
LINE LINE
H34

H35

X X X
ON

H36
ON
OFF

OFF

LOAD LOAD
2 4 6 2 4 6 N

D14
Y Y
30 30
Z
54 54

140 185

NXM-400E/S/F/H, 630E/S/F/H, NXMS-400E/F/H, 630E/F/H, NXMLE-400S/F/H, 630S/F/H, NXHM-400, 630

Installation size of baseplate (mm)

88 Specification
44 22
H34 H35 H36 H37 H38 D13 D14 D Remark
and model
3P 3PN/4P
39.5 37.5 250A-280A
37.5 300A-315A-320A
44
NXM-400E/S/F/H 40.5 38 350A-380A
92 225 257 46 194 11
NXM-630E/S/F/H 39 400A-450A
H38

H38

X X
39 500A-550A
41.5
4-Φ7 6-Φ7 40.5 600A-630A

NXMS-400S/F/H 40 37.5 400A

89 225 257 48 194 11
NXMS-630S/F/H 39.5 41 630A

Y Y 39 38.5 250A-280A
39.5 300A-315A-320A

NXMLE-400S/F/H 40.5 39.5 350A-380A

92 235 267 51 228 11
NXMLE-630S/F/H 39.5 400A-450A
39 500A-550A
41.5
40.5 600A-630A

NXHM-400 40.5 39 400A

92 225 257 46 194 11
NXHM-630 41.5 40.5 630A
 NXM MCCB P- 150

NXM-400E/S/F/H, 630E/S/F/H, NXMS-400E/F/H, 630E/F/H, NXMLE-400S/F/H, 630S/F/H, NXHM-400, 630

Rear connection, dimension (mm)

93
93 58
58 3PN/4P M10
18
3P 18

H35
12

H36
88
X X
88

88
12

8
NXM-400E/S/F/H, 630E/S/F/H, NXMS-400E/F/H, 630E/F/H, NXMLE-400S/F/H, 630S/F/H, NXHM-400, 630

Installation size of baseplate (mm)

132
88 88
44 44
3P 3PN/4P

22
H40
H39

X X
H40
H39

4- 7 6- 7
6 - 33 8 - 33

Y Y

Specification and model H39 H40 Remark

NXM-400E/S/F/H, 630E/S/F/H 225 194 3P/4P
NXMS-400S/F/H, 630S/F/H 225 194 3P/4P
NXMLE-400S/F/H 235 228 3P/3PN/4P
NXMLE-630S/F/H 235 228 3P/3PN/4P
NXHM-400, 630 225 194 3P/4P

NXM- 400E/S/F/H, 630E/S/F/H, NXMS-400E/F/H, 630E/F/H, NXMLE-400S/F/H, 630S/F/H, NXHM-400, 630

Plug-in rear connection, dimension (mm)

111
88
187
60 3P 142 3PN//4P 71.5
23

3P

88 132

X X
H41

H45
H46
(H41)

X
H42
H43
H44

(H41)

H45
H46

4- 9 4- 9
M8

M12
8.5

Y Y

Specification and model H41 H42 H43 H44 H45 H46 Remark
NXM-400E/S/F/H, 630E/S/F/H 145 171 225 281 168 283 3P/4P
NXMS-400S/F/H, 630S/F/H 145 171 225 281 168 283 3P/4P
NXMLE-400S/F/H 155 181 235 291 178 293 3P/3PN/4P
NXMLE-630S/F/H 155 181 235 291 178 293 3P/3PN/4P
NXHM-400, 630 145 171 225 281 168 283 3P/4P
 P- 151 MCCB NXM

NXM-400E/S/F/H, 630E/S/F/H, NXMS-400E/F/H, 630E/F/H, NXMLE-400S/F/H, 630S/F/H, NXHM-400, 630

Cabinet gate hole (small) size (mm)

52 52
3P 3PN/4P

X X X

H47

H47
107.5
≤2
Y Y
Y

NXM-400E/S/F/H, 630E/S/F/H, NXMS-400E/F/H, 630E/F/H, NXMLE-400S/F/H, 630S/F/H, NXHM-400, 630

Cabinet gate hole (large) size (mm)

187

3P 142 3PN/4P 71.5

152
X X X
152

D15
≤2
Y Y
Z

Specification and model H47 D15 Remark

NXM-400E/S/F/H, 630E/S/F/H 94 96.5 3P/4P
NXMS-400S/F/H, 630S/F/H 87 96.5 3P/4P
NXMLE-400S/F/H, 630S/F/H 94 98.5 3P/3PN/4P
NXHM-400, 630 94 96.5 3P/4P

NXM-800S/F/H, NXHM-800

Front connection, dimension (mm)

174
116 116
58 58
165
114
104

104

3P 4P D16 D

1 3 5 1 3 5 N
LINE LINE
45
45

235

X X X
ON
ON

235

270
91

91

OFF
OFF

LOAD LOAD
2 4 6 2 4 6 N

D17
Y
Y
33 33
54 54 Z
182 240
 NXM MCCB P- 152

NXM-800S/F/H, NXHM-800

Installation size of baseplate(mm)

W1 W2
(W1/2) 3PN/4P (W2/2)
3P

(W2/4)

X X
H48

H48
4 - 7.5 6 - 7.5

Y Y

Specification and model D16 D17 D H48 W1 W2 Remark

43 41 10.5 200 58 116 630A
NXM-800S/F/H
44 42 10.5 200 58 116 700A
NXHM-800
45 43 10.5 200 58 116 800A

NXM-800S/F/H, NXHM-800

Rear connection, dimension (mm)

W6
W7
W6
3PN/4P
W7
3P

16 M16
16
H61

X X X
H49
H60

H50
H60

20

10
20
 P- 153 MCCB NXM

NXM-800S/F/H, NXHM-800

Rear connection, dimension(mm)

3×W8
2×W8 2×W8

3P W8 3PN/4P W8/2 W8

W8
W8
H51
H50

X X

H51
H50
4- 7 6 - 78 - 40
6 - 7.5

Y Y

Specification and model W6 W7 W8 H49 H50 H51 H60

NXM-800S/F/H 99 66 58 270 235 200 116
NXHM-800 99 66 58 270 235 200 116

NXM-800S/F/H, NXHM-800
Plug-in rear connection, dimension (mm)

110 236(3PN/4P)
92
178(3P)
3P/3PN/4P 60 3P/3PN/4P
23

100 66
M8

H56
H57

X X
(H52)
H54
H55
H52

6- 9

M12
12H53

Specification and model H52 H53 h54 H55 H56 H57 Remark
NXM-800S/F/H 124 170 235 300 168 302 3P/4P
NXHM-800 124 170 235 300 168 302 3P/4P

NXM-800S/F/H, NXHM-800
Cabinet gate hole (small) size (mm)

W3 W3
3P 3PN/4P

X X X
H58
H58

D18 Y Y
≤2

Y
 NXM MCCB P- 154

NXM-800S/F/H, NXHM-800

Cabinet gate hole (large) size (mm)

W5
W4 (W4/2)
3P 3PN/4P

X X X

H59

H59
D19 ≤2 Y Y

Specification and model D18 D19 H58 W3 H59 W4 W5 Remark

NXM-800S/F/H 114.5 104 93 52 162 184 242 3P/4P
NXHM-800 114.5 104 93 52 162 184 242 3P/4P

NXM-1000S/H, NXHM-1000
Front connection, dimension (mm)

210
140 140 168
70 70 118
D20 D
106

106

3P 4P

1 3 5 LINE 1 3 5 N LINE
52

X
52

X
280
ON

X
100

243

ON
100

243
OFF

OFF

LOAD
2 4 6 LOAD
2 4 6 N

D21
Y
Y
45 45
Y
60 60
210 280

NXMS-1000S/H

Front connection, dimension (mm)

210
140 140 168
70 70 118
D20 D
106

3P 4P
106

1 3 5 LINE
1 3 5 N LINE
52

X
280
52

X
ON
94

243

243

X
ON
100
OFF

OFF

LOAD
2 4 6 LOAD
2 4 6 N

D21
Y Y
45 45
Y
60 60
210 280
 P- 155 MCCB NXM

NXM-1000S/H, NXMS-1000S/H, NXHM-1000

Installation size of baseplate (mm)

140
3P 70 4P 35

70

X X
243

243
4 - 7.5 6 - 7.5

Y Y

Specification and model D20 D21 D Remark

NXM-1000S/H 41 41 12 800A
NXHM-1000 43 42 12 1000A
NXMS-1000S/H 43 43 12 800/1000A

NXM-1000S/H, NXMS-1000S/H, NXHM-1000

Rear connection, dimension (mm)

84
4P
84
3P M16
20
16

16
280

243
X X
210
140

70

10

NXM-1000S/H, NXMS-1000S/H, NXHM-1000

Rear connection, dimension (mm)

210
140 140

3P 70 4P 70

X X
243

243

4 - 76 - 40 8 - 40
6- 7

Y Y
 NXM MCCB P- 156

NXM-1000S/H, NXMS-1000S/H, NXHM-1000

Plug-in rear connection, dimension (mm)

158.5
143.5 284(4P)
87 214(3P)
27 3P/4P 107

3P/4P

90 95
M10

X X

(146)

177
309
243
305
146

181

6 - 12
M12
10

NXM-1000S/H, NXMS-1000S/H NXHM-1000

Cabinet gate hole (small) size (mm)

3P 62 4P 62

X X X
H60

H60

117 Y
≤2 Y

NXM-1000S/H, NXMS-1000S/H NXHM-1000

Cabinet gate hole (large) size (mm)

282
3P 212 4P 106

X X X
172

172

105 ≤2 Y

Specification and model H60 Remark

NXM-1000S/H 102 3P/4P
NXMS-1000S/H 95 3P/4P
NXHM-1000 102 3P/4P
 P- 157 MCCB NXM

NXM-1250S/H,1600S/H

Front connection, dimension (mm)

242
92.5

92.5
70 140 158
D22 D
3P 4P
1 3 5 N 1 3 5
LINE LINE

37.8
37.8

X X X

370
ON

ON
120
120

OFF

OFF
LOAD
2 4 6LOAD N 2 4 6

Y Y

53.5 53.5
78 78
Z
210 280

NXMS-1250S/H,1600S/H

Front connection, dimension (mm)

242
70 140 158
92.5

92.5

D22 D
3P 4P
1 3 5 N 1 3 5
LINE LINE
40
40

X X X
ON
ON
120

120

370
OFF
OFF

LOAD
2 4 6 N 2 4 6LOAD

Y Y
53.5 53.5

78 78 Z

210 280

NXM-1250S/H,1600S/H，NXMS-1250S/H,1600S/H
Installation size of baseplate (mm)

140
70 70
3P 4P

35

X X
314

314

4 -Φ6 6 -Φ6

Y Y

Specification and model D22 D Remark

55 1000A
NXM-1250S/H, 1600S/H 57 15.5 1250A
65 1600A
57 1250A
NXMS-1250S/H, 1600S/H 15.5
65 1600A
 NXM MCCB P- 158

NXM-1250S/H,1600S/H，NXMS-1250S/H,1600S/H

Cabinet gate hole (small) size (mm)

80 4P 80
3P

X
X X

122

127
1)
158.5
≤2
Y Y
Z

NXM-1600S/H, NXMS-1600S/H/, NXHM-1600

Cabinet gate hole (large) size (mm)

282
3P 212 4P 106

X
X X
177
177

2)
149
≤2
Y
Z Y
 P- 159 MCCB NXM

NXM-63 NXM-63

Tripping curve Temperature compensation curve

10000 160
7200
3600
150
1200
600
140
300
120
130
Actuation time (s)

60

Rated current (%)

30
20 120
10
5 110
2
1
0.5 100
0.2
90
0.1
0.05
0.02 80

1 2 3 4 5 7 8 12 20
-35 -25 -15 -5 0 10 20 30 40 50 60 70
Rated current multiples Ambient temperature (°C)

NXM-125, NXMLE-125 NXM-125, NXMLE-125

Tripping curve Temperature compensation curve

10000 160
7200
3600 150
1200
600 140
300
120 130
Actuation time (s)

60
Rated current (%)

30
120
20
10
110
5
2
1 100
0.5
0.2
90
0.1
0.05
0.02 80

1 2 3 4 5 7 8 12 20 -35 -25 -15 -5 0 10 20 30 40 50 60 70

Rated current multiples Ambient temperature (°C)

 NXM MCCB P- 160

NXM-160, NXMLE-160 NXM-160, NXMLE-160

Tripping curve Temperature compensation curve

10000 160
7200
3600 150
1200
600 140
300
120 130
Actuation time (s)

Rated current (%)

60
30
120
20
10
110
5
2
100
1
0.5
0.2 90
0.1
0.05 80
0.02

-35 -25 -15 -5 0 10 20 30 40 50 60 70

1 2 3 4 5 7 8 12 20
Ambient temperature (°C)
Rated current multiples

NXM-250, NXMLE-250 NXM-250, NXMLE-250

Tripping curve Temperature compensation curve

10000 170
7200
160
3600
1200
150
600
300
140
120
60 130
Actuation time (s)

30
Rated current (%)

20 120
10
5
2 110
125~250A
1 100
0.5 250~320A
0.2
90
0.1
0.05 80
0.02

-35 -25 -15 -5 0 10 20 30 40 50 60 70

1 2 3 4 5 7 8 12 20

Rated current multiples Ambient temperature (°C)

 P- 161 MCCB NXM

NXM-400/630, NXMLE-400/630 NXM-400/630, NXMLE-400/630

Tripping curve Temperature compensation curve

10000
160
7200
3600
1200 150
600
300 140
120
60 130
Actuation time (s)

Rated current (%)

30
20 120
10
5
2 110
1
0.5 100
0.2
0.1 90
0.05
0.02 80

1 2 3 4 5 7 8 12 20 -35 -25 -15 -5 0 10 20 30 40 50 60 70

Rated current multiples Ambient temperature (°C)

NXM-800 NXM-800

Tripping curve Temperature compensation curve

160
10000
7200
3600 150
1200
600 140
300
120 130
Actuation time (s)

60
30 120
Rated current (%)

20
10 110
5
2
1 100
0.5
0.2 90
0.1
0.05
80
0.02

-35 -25 -15 -5 0 10 20 30 40 50 60 70

1 2 3 4 5 7 8 12 20

Rated current multiples Ambient temperature (°C)

 NXM MCCB P- 162

NXM-1000 NXM-1000

Tripping curve Temperature compensation curve

10000 160
7200
3600 150
1200
600 140
300
120 130
Actuation time (s)

60

Rated current (%)

30
120
20
10
5 110
2
1 100
0.5
0.2
90
0.1
0.05
0.02 80

1 2 3 4 5 7 8 12 20 -35 -25 -15 -5 0 10 20 30 40 50 60 70

Rated current multiples Ambient temperature (°C)

NXM-1250,1600 NXM-1250,1600

Tripping curve Temperature compensation curve

170
10000
7200 160
3600
1200 150

600
140
300
120 130
60
Rated current (%)
Actuation time (s)

30
120
20
10
110
5
2
100
1
0.5
0.2 90

0.1
80
0.05
0.02
-35 -25 -15 -5 0 10 20 30 40 50 60 70
1 2 3 4 5 7 8 12 20

Rated current multiples Ambient temperature (°C)