The Next Reliable Choice

Modular Din Rail Product

$)*/5t&NQPXFS
UIF
8PSME
Founded in 1984, CHINT Group is a leader in Chinese industrial electric appliance and new
energy sectors. With total assets of 36.5 billion RMB and nearly 30 thousand employees, the
company is running business that covers the whole power equipment industrial chain
including power generation, transmission, transformation, distribution, and consumption. The
company is also operating in the fields of urban rail traffic, energy equipment manufacturing,
new energy storage materials, energy Internet, investment & financing platform, and business
incubator. The products have been sold to over 120 countries and regions around the world,
and have entered main component markets in Europe, Asia, Middle East, and Africa.

The group ranks among top 500 private enterprises in China, and has been the largest tax payer
among all manufacturers in Wenzhou for a few consecutive years. Zhejiang CHINT Electric
Appliance Corporation under CHINT Group is the largest company in domestic LV electric
appliance industry in terms of production and sales amount, and also the first company
running LV electric appliance as main business listed in A-share market. CHINT Solar has built
over a hundred photovoltaic power stations around the world, serving as the largest
photovoltaic power station investor and operator in all domestic private players.

CHINT has always following the policies of innovation-driven industrial development. It's the
first among all competitors to pass ISO9001 quality system certification, ISO 14001 environment
system certification, and OHSAS18001 occupational health safety management certification.
The group also holds China Compulsory Certificate (CCC), international CB safety certificate, US
UL certificate, Finland FI certificate, Belgium CEBEC certificate, Netherland KEMA certificate, and
Germany VDE certificate. The group now owns over 1000 domestic and foreign patents, and
has led or participate in establishment and revision of over 120 industrial standards. Its HV and
LV electric appliances and photovoltaic inverters won Germany Wed Dot Award. CHINT led
development of critical manufacturing equipment PECVD, LPCVD, and MOCVD for China's first
silicon based thin film photovoltaic cells, which has significantly improved semiconductor
equipment manufacturing level in China.

The group has won a number of awards including China Industrial Award, National Quality
Management Award, China Excellent Private Science & Technology Enterprise, China Top Ten
Machinery Manufacturers with Core Competitiveness, China Top Ten Leading Private
Enterprises with Independent Innovation Capabilities, China Contract-Fulfilling and Trustworthy
Enterprise, National Advanced Private Enterprise for Employment and Social Security, and China
Charity Award.

In the future, CHINT will march towards the targets of creating world famous brands and
contributing to an industrial power. It will focus on building the Energy Internet and becoming
a smart energy developer and operator. The group will make great efforts to implement three
policies: globalization, M&A and integration, and smart manufacturing. Four platforms will be
created, including scientific innovation and industrial incubation platform, online industrial and
civil Internet of Things platform, online & offline supply chain interaction platform, and
investment & financing and payment platform. Four industrial clusters will also be developed,
including smart electrical system solution industrial cluster for smart grid, industrial automation
information cluster for smart cities, clean energy, environment protection, and energy
conservation industrial cluster for smart micro-grid, high-tech material information technology
and high-end equipment industrial cluster for smart manufacturing, and Internet of Things IT
and smart home industrial group for smart business.
The Next Reliable Choice

Modular Din Rail Product

Large current with small

Contact site indicating window, dimension, save the installation
more clearly on the position space
All products have the contact site 50A MCCB is only 18mm width, while 63A
indicating window, which can prevent RCCB is only 36mm width.
wrong operation, and make the using
more reliable.

More choice of specifications Complete accessories,

of the residual operating current multifunctional combination
6 specifications including 10mA, 30mA, More accessories selection to achieve
50mA,75mA, 100mA and 300mA, for a customer needs, reduce customization
wider choice and more accurate and cost.
protection.

Absolute adaptability, with

steady and reliable operation
in extreme conditions
-35°C/+70°C operating temperature range.
Meets several applications requirements.
10NA
&BSUI
MFBLBHF
QSPUFDUJPO
First prevent the danger
More reliably on safety
Content
Identifier description P-01

Product overview
Miniature Circuit Breaker P-02

Residual current operated circuit breaker P-03

Accessories P-04

Surge protector P-06

Isolation P-06

Technical parameters
Circuit breaker and switch parameters P-07

Residual current operated circuit breaker P-09

(RCBO) parameters

Tripping characteristics P-11

Product selection
Circuit breakers P-12

Surge protector P-12

Product description
Product description catalogue P-13
Modular DIN Rail Products

Identifier description

NXB-63 Miniature Circuit Breaker

Trademark

Product model
CE
Indication window

Wiring diagram 2-D barcode

Open/Close position
indicator

Technical parameters

Standard

NXBLE-63 Residual current operated circuit breaker

Trademark
Contact position
indication
Product model

Breaker Leakage indication

parameters

Standard
Wiring diagram

Open/Close
position indicator Leakage
parameter

2-D barcode

Test button

01 >> Empower the World

 Modular DIN Rail Products

Product overview

Miniature Circuit Breaker

Overload protection, short circuit protection and isolation. It is widely used in building power distribution, industrial power distribution,
as well as control and protection for a variety of equipment with operating current not exceeding 125A.Key products series include:

NXB-40 NXB-63

40A and below single mode 1P + N 63A and below Miniature

Miniature Circuit Breaker Circuit Breaker
( IEC/EN 60898-1) ( IEC/EN 60898-1)

NXB-80 NXB-125

80A and below 1P, 1P + N, 2P 125A and below Molded Case

Miniature Circuit Breaker Circuit Breaker
( IEC/EN 60898-1) ( IEC/EN 60898-1)

NXB-125G

125A and below Miniature

Circuit Breaker
( IEC/EN 60898-1)

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Modular DIN Rail Products

Residual Current Operated Circuit Breaker (RCBO)

It has the function of overload and short circuit protection, isolation and Earth leakage current protection, i.e., besides the protection function
of Miniature Circuit Breaker, it can also serve as additional protection for direct or indirect electric leakage/shock or protective measures for
electric fire. It is especially suited for places with low safety level, such as bathroom, swimming pool, plug socket or transformer.
Key products series include:

NXBLE-40 NXBLE-63Y

40A and below 1P + N RCBO 63A and below 1P + N RCBO

(IEC/EN 61009-1) (IEC/EN 61009-1)

NXBLE-32 NXBLE-63

32A and below RCBO 63A and below RCBO

(IEC/EN 61009-1) (IEC/EN 61009-1)

NXBLE-125 NXBLE-125G

125A and below RCBO 125A and below RCBO

(IEC / EN 60947-2) (IEC/EN 61009-1)

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 Modular DIN Rail Products

Product overview

Accessories

A variety of additional features can be achieved with wide range of accessories when used with circuit breaker, such as alerts, shunt trip, under
-voltage protection, etc. Usually the Max number of accessories assembled on the circuit breaker is three. Accessories with independent tripping
function should be assembled first, such as shunt trip, and under-voltage trip, Followed by other accessories , such as auxiliary contacts, alarm
auxiliary contacts.
Accessories that can be assembled with NXC-63 series (IEC/EN 60947-5)

AX-X1 AL-X1

Auxiliary contacts Alarm auxiliary contacts

SHT-X1 OVT-X1

Shunt release Over-voltage release

UVT-X1 OUVT-X1

Under-voltage release Over/under voltage release

Empower the World >> 04

Modular DIN Rail Products

Product overview

Accessories for NXC-125 series (IEC/EN 60947-5)

AX-X3 AL-X3
Auxiliary contacts Alarm auxiliary contacts

SHT-X3 OVT-X3
Shunt release Over-voltage release

UVT-X3 OUVT-X3
Under-voltage release Over/under voltage release

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 Modular DIN Rail Products

Product overview

Surge protector
It is mainly suitable for lightning protection for low-voltage distribution system in the building, and surge protection for the main inlet
cabinet.
Key product models include (IEC61643-11):

NXU-Ⅰ +Ⅱ NXU-Ⅱ
Surge protector that meets both Surge protector that meets
Type Ⅰand Type ⅡSPD test Type Ⅱ SPD test

NXU-Ⅲ
Surge protector that meets
Type Ⅲ SPD test

Isolation switch

With isolation function, it is mainly used for isolation and

functional analysis of terminal power distribution.

NXHB-125
125A and below isolation switch
(IEC/EN60898-3)

Empower the World >> 06

Modular DIN Rail Products

Parameters

Circuit breaker and switch parameters

Product model NXB-40 NXB-63

Compliant standards IEC60898-1 IEC60898-1
Rated current (A) 6~40 1~63
Rated voltage (V ~) 230 230/400
Rated frequency (Hz) 50/60 50/60
Number of poles 1P+N 1P, 1P+N, 2P, 3P, 3P+N, 4P
Mechanical life (cycles) 20000 20000
Electrical life (cycles) 10000 10000
Rated short-circuit breaking capacity Icu (A) 4500 6000(2P/230V 10000)
Short-circuit breaking capacity Icu (A) 4500 6000(2P/230V 7500)
Rated impulse withstand voltage (1.2 / 50)(kV) 4 4
Dielectric test voltage (V) (Power frequency 1 minute) 2000 (Power frequency 1 minute) 2000
Anti-humid and heat properties (GB/T2423.4:55℃/90~96%,25℃/95~100%) 28 cycles 28 cycles
Minimum cross section (mm²) 1 1
Maximum cross section (mm²) 16 25
Terminals Standard connection torque (N·m) 1.5 2
Maximum withstand torque (N m) 2 2.5
Wire insertion depth (mm) 10 12.5
Reference temperature for setting of thermal element (℃) 30 30
Ambient temperature (℃) -35~+70 -35~+70
Ambient storage temperature (℃) -35~+85 -35~+85
Applicable altitude (m) 5000 5000
Type B (3In ~ 5In) ■
Type C (5In ~ 10In) ■ ■
Electromagnetic Type D (10In ~ 14In)
trip type ■ ■
Type C (6.4In ~ 9.6In)
Type D (9.6In~14.4In)

50 ~ 60Hz 1In 1In

Electromagnetic
tripping current 100Hz 1.1In 1.1In
correction factor under
different power 200Hz 1.2In 1.2In
frequency 400Hz 1.5In 1.5In
(recommended value)
DC 1.5In 1.5In
≤3 (0.9~0.95)In (0.9~0.95)In
Derating factor with
multiple products 4~6 (0.86~0.80)In (0.86~0.80)In
side by side (0.78~0.76)In (0.78~0.76)In
7~9
(recommended value)
>9 0.76In 0.76In
Temperature compensation Change for every 10℃ increase from the reference temp -(0.04~0.07)In -(0.03~0.05)In
coefficient (recommended
value) Change for every 10℃ decrease from the reference temp +(0.04~0.07)In +(0.04~0.07)In

≤2000m In In
Rated
current correction factor 3000m 0.96In 0.96In
for high altitude use
4000m 0.94In 0.94In
(recommended value)
5000m 0.92In 0.92In

≤2000m Ue Ue
Rated
voltage correction factor 3000m 0.89Ue 0.89Ue
for high altitude use
4000m 0.78Ue 0.78Ue
(recommended value)
5000m 0.68Ue 0.68Ue
Cable entry Top or bottom entry Top or bottom entry

Mounting TH35-7.5-rail mounting TH35-7.5-rail mounting

Pollution degree Pollution degree Ⅱ Pollution degree Ⅱ
Direct mounting IP20 IP20
Protection degree
Mounted in the distribution box IP40 IP40

AX-X1, AL-X1, SHT-X1, AX-X1, AL-X1, SHT-X1,

Accessories that can be assembled
OVT-X1, UVT-X1, OUVT-X1 OVT-X1, UVT-X1, OUVT-X1

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 Modular DIN Rail Products

NXB-80 NXB-125 NXB-125G NXHB-125

IEC60898-1 IEC60947-2 IEC60898-1 IEC60947-3
80 63~125 63~125 63~125
230 230/400 230/400 230/400
50/60 50/60 50/60 50/60
1P, 1P+N, 2P 1P, 2P, 3P, 4P 1P, 2P, 3P, 4P 1P, 2P, 3P, 4P
20000 20000 20000 10000
10000 6000(In≤100A), 4000(In>100A) 6000(In≤100A), 4000(In>100A) 3000
6000(2P/230V 10000) 10000 10000 20Ie
6000(2P/230V 7500) 7500 7500 3Ie
4 4 4 6
(Power frequency 1 minute) 2000 (Power frequency 1 minute) 1890 (Power frequency 1 minute) 2000 (Power frequency 1 minute) 1890
28 cycles 28 cycles 28 cycles 28 cycles

1 6 6 1
25 50 50 50
2 3.5 3.5 3.5
3 4 4 4
12.5 15 15 15
30 30 30 30
-35~+70 -35~+70 -35~+70 -35~+70
-35~+85 -35~+85 -35~+85 -35~+85
5000 5000 5000 5000
■ ■
■ ■
■ ■
■
■
1In 1In 1In
1.1In 1.1In 1.1In
1.2In 1.2In 1.2In
1.5In 1.5In 1.5In
1.5In 1.5In 1.5In
(0.9~0.95)In (0.9~0.95)In (0.9~0.95)In
(0.86~0.80)In (0.86~0.80)In (0.86~0.80)In
(0.78~0.76)In (0.78~0.76)In (0.78~0.76)In
0.76In 0.76In 0.76In
-(0.03~0.05)In -(0.03~0.05)In -(0.03~0.05)In
+(0.04~0.07)In +(0.04~0.07)In +(0.04~0.07)In
In In In
0.96In 0.96In 0.96In
0.94In 0.94In 0.94In
0.92In 0.92In 0.92In
Ue Ue Ue
0.89Ue 0.89Ue 0.89Ue
0.78Ue 0.78Ue 0.78Ue
0.68Ue 0.68Ue 0.68Ue
Top or bottom entry Top or bottom entry Top or bottom entry Top or bottom entry

TH35-7.5-rail mounting TH35-7.5-rail mounting TH35-7.5-rail mounting TH35-7.5-rail mounting

Pollution degree Ⅱ Pollution degree III Pollution degree III Pollution degree Ⅱ
IP20 IP20 IP20 IP20
IP40 IP40 IP40 IP40

AX-X1, AL-X1, SHT-X1, AX-X3, AL-X3, SHT-X3, AX-X3, AL-X3, SHT-X3,

OVT-X1, UVT-X1, OUVT-X1 OVT-X3, UVT-X3, OUVT-X3 OVT-X3, UVT-X3, OUVT-X3

Empower the World >> 08

Modular DIN Rail Products

Residual current operated circuit breaker parameter

Product model NXBLE-40 NXBLE-63Y

Compliant standards IEC61009-1 IEC61009-1
Rated current (A) 6~40 6~63
Rated residual operating current (A) 0.01, 0.03 0.01, 0.03
Leakage protection type AC AC
Rated voltage (V ~) 230 230
Rated frequency (Hz) 50/60 50/60
Number of poles 1P+N 1P+N
Mechanical life (cycles) 20000 20000
Electrical life (cycles) 10000 10000
Rated short-circuit breaking capacity (A) 4500 4500
Short-circuit breaking capacity (A) 4500 4500
Rated impulse withstand voltage (1.2 / 50)(kV) 4 4
Dielectric test voltage (V) (Power frequency 1 minute) 2000 (Power frequency 1 minute) 2000
Anti-humid and heat properties (GB/T2423.4:55℃/90~96%,25℃/95~100%) 28 cycles 28 cycles
Minimum cross section (mm²) 1 1
Maximum cross section (mm²) 16 25
Terminals Standard connection torque (N·m) 1.5 2
Maximum withstand torque (N m) 2 2.5
Wire insertion depth (mm) 10 12.5
Reference temperature for setting of thermal element (℃) 30 30

Ambient working temperature (℃) -35~+70 -35~+70

Ambient storage temperature (℃) -35~+85 -35~+85

Applicable altitude (m) 5000 5000

Type B (3In ~ 5In)
Type C (3In ~ 5In) ■ ■
Electromagnetic Type D (3In ~ 5In) ■ ■
trip type
Type C (6.4In ~ 9.6In)
Type D (9.6In~14.4In)

50 ~ 60Hz 1In 1In

Electromagnetic
tripping current 100Hz 1.1In 1.1In
correction factor under
different power 200Hz 1.2In 1.2In
frequency 400Hz 1.5In 1.5In
(recommended value)
DC 1.5In 1.5In
≤3 (0.9~0.95）In (0.9~0.95）In
Derating factor with
multiple products 4~6 (0.86~0.80)In (0.86~0.80)In
side by side
7~9 (0.78~0.76)In (0.78~0.76)In
(recommended value)
>9 0.76In 0.76In
Temperature compensation Change for every 10℃ increase from the reference temp -(0.03~0.050)In -(0.03~0.050)In
coefficient (recommended
value) Change for every 10℃ decrease from the reference temp -(0.04~0.07)In -(0.04~0.07)In
≤2000m In In
Rated
current correction factor 3000m 0.96In 0.96In
for high altitude use
(recommended value) 4000m 0.94In 0.94In

5000m 0.92In 0.92In

≤2000m Ue Ue
Rated
voltage correction factor 3000m 0.89Ue 0.89Ue
for high altitude use
4000m 0.78Ue 0.78Ue
(recommended value)
5000m 0.68Ue 0.68Ue
Cable entry Top-in, Bottom-out Top-in, Bottom-out
Mounting TH35-7.5-rail mounting TH35-7.5-rail mounting

Pollution degree Pollution degree Ⅱ Pollution degree Ⅱ

Direct mounting IP20 IP20
Protection class
Mounted in the distribution box IP40 IP40

AX-X1, AL-X1, SHT-X1, AX-X1, AL-X1, SHT-X1,

Accessories that can be assembled
OVT-X1, UVT-X1, OUVT-X1 OVT-X1, UVT-X1, OUVT-X1

09 >> Empower the World

 Modular DIN Rail Products

NXBLE-32 NXBLE-63 NXBLE-125 NXBLE-125G

IEC61009-1 IEC61009-1 IEC60947-2 IEC61009-1
6~32 40~63 63~125 63~125
0.03, 0.05, 0.075, 0.1, 0.3 0.03, 0.05, 0.075, 0.1, 0.3 0.03, 0.05, 0.075, 0.1, 0.3 0.03, 0.05, 0.075, 0.1, 0.3
AC AC AC AC
230/400 230/400 230/400 230/400
50/60 50/60 50/60 50/60
1P+N, 2P, 3P, 3P+N, 4P 1P+N, 2P, 3P, 3P+N, 4P 1P+N, 2P, 3P, 3P+N, 4P 1P+N, 2P, 3P, 3P+N, 4P
20000 20000 20000 20000
10000 10000 6000(In≤100A), 4000(In>100A) 6000(In≤100A), 4000(In>100A)
4500 6000 10000 10000
4500 6000 7500 7500
4 4 4 4
(Power frequency 1 minute) 2000 (Power frequency 1 minute) 2000 (Power frequency 1 minute) 1890 (Power frequency 1 minute) 2000
28 cycles 28 cycles 28 cycles 28 cycles
1 1 6 6
25 25 50 50
2 2 3.5 3.5
2.5 2.5 4 4
12.5 12.5 15 15
30 30 30 30
-35~+70 -35~+70 -35~+70 -35~+70
-35~+85 -35~+85 -35~+85 -35~+85
5000 5000 5000 5000

■ ■ ■
■ ■ ■
■ ■ ■

■
■
1In 1In 1In 1In
1.1In 1.1In 1.1In 1.1In
1.2In 1.2In 1.2In 1.2In
1.5In 1.5In 1.5In 1.5In
1.5In 1.5In 1.5In 1.5In
(0.9~0.95）In (0.9~0.95）In (0.9~0.95）In (0.9~0.95）In
(0.86~0.80)In (0.86~0.80)In (0.86~0.80)In (0.86~0.80)In
(0.78~0.76)In (0.78~0.76)In (0.78~0.76)In (0.78~0.76)In
0.76In 0.76In 0.76In 0.76In
-(0.03~0.050)In -(0.03~0.050)In -(0.03~0.050)In -(0.03~0.050)In
-(0.04~0.07)In -(0.04~0.07)In -(0.04~0.07)In -(0.04~0.07)In
In In In In
0.96In 0.96In 0.96In 0.96In
0.94In 0.94In 0.94In 0.94In
0.92In 0.92In 0.92In 0.92In
Ue Ue Ue Ue
0.89Ue 0.89Ue 0.89Ue 0.89Ue
0.78Ue 0.78Ue 0.78Ue 0.78Ue
0.68Ue 0.68Ue 0.68Ue 0.68Ue
Top-in, Bottom-out Top-in, Bottom-out Top-in, Bottom-out Top-in, Bottom-out
TH35-7.5-rail mounting TH35-7.5-rail mounting TH35-7.5-rail mounting TH35-7.5-rail mounting
Pollution degree Ⅱ Pollution degree Ⅱ Pollution degree Ⅲ Pollution degree Ⅲ
IP20 IP20 IP20 IP20
IP40 Ip40 IP40 IP40

AX-X1, AL-X1, SHT-X1, AX-X1, AL-X1, SHT-X1,

OVT-X1, UVT-X1, OUVT-X1 OVT-X1, UVT-X1, OUVT-X1 AX-X3, AL-X3 AX-X3, AL-X3

Empower the World >> 10

Modular DIN Rail Products

Tripping characteristics

Tripping characteristics are in compliant with standard IEC60898-1 and IEC61009-1

Test Type Test current Starting state Trip/Not trip time limit Expected outcome Notes
t≤1 h(for In≤63A)
a B,C,D 1.13In Cold t＜2 h(for In＞63A) Not trip

t＜1 h(for In≤63A) Current increase

b B,C,D 1.45In Right after test Trip
t＜2 h(for In＞63A) steadily within 5s

1s＜t＜60s (for In≤32A) Trip

c B,C,D 2.55In Right after test 1s＜t＜120s (for In＞32A)

B 3In
Connect the current by
d C 5In Cold t≤0.1s Not trip
closing the auxiliary switch
D 10In

B 5In
e Trip Connect the current by
C 10In Cold t＜0.1s
closing the auxiliary switch
D 20In

Tripping characteristics are in compliant with standard IEC60947-2

Release type Test current Starting state Trip/Not trip time limit Expected outcome Notes
t≤1 h(for In≤63A)
C,D 1.05In Cold Not trip
t≤2 h(for In＞63A)

t＜1 h(for In≤63A) Current increase

C,D 1.3In Right after test Trip
t＜2 h(for In＞63A) steadily within 5s

C,D 2In Cold t＜900s Trip

C 6.4In
Cold t≤0.2s Not trip
D 9.6In Connect the current by
9.6In closing the auxiliary switch
C
Cold t＜0.2s Trip
D 14.4In

Tripping curve

Compliant with standard IEC60898-1 and IEC61009-1 Compliant with standard IEC60947-2

1.45 t(s)
1000 10000
5000 8000
1h 1hor2h
2000 2000
1000 1000
500 500

200 200
100
100
50 50
20
20
10
10
5
t(S)

5
2
2
1
1
0.5
0.5
0.2 B C D C D
0.2
0.1
0.1
0.05
0.05
0.02
0.02
0.01
0.01
0.005
0.005
0.002
0.002
0.001
0.001
0.5 1 2 3 4 5 7 10 14 20 30 50 70 100 200 I/In
0.5 1 1.3 2 3 4 6.4 9.6 14.420 30 50 70 100 I/In

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 Modular DIN Rail Products

Cross-sectional area of the connecting copper wire

The following table shows the cross-sectional area of the copper wire corresponding to the rated current (recommended value):

2
Copper wire cross-sectional area Smm Rated current In(A)
1 In≤8
1.5 8＜In≤12
2.5 12＜In≤20
4 20＜In≤25
6 25＜In≤32
10 32＜In≤50
16 50＜In≤63
25 63＜In≤85
35 85＜In≤115
50 115＜In≤150

Product selection and order

Circuit breakers

Product model Number of poles Electromagnetic release type Rated current Rated residual operating current

NXB-40
1P+N C, D 6A, 10A, 16A, 20A, 25A, 32A, 40A
NXBLE-40 0.01A, 0.03A

1P, 1P+N, 2P, 1A, 2A, 3A, 4A, 6A, 10A, 16A,
NXB-63 B, C, D 20A, 25A, 32A, 40A, 50A, 63A
3P, 3P+N, 4P

NXBLE-32 1P+N, 2P, 3P, 6A, 10A, 16A, 20A, 25A, 32A 0.03A, 0.05A, 0.075A,
3P+N, 4P B, C, D 0.1A, 0.3A
NXBLE-63 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A

NXBLE-63Y 1P+N C, D 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A 0.01A, 0.03A
NXB-80 1P, 1P+N, 2P B, C, D 80A
NXB-125 1P, 2P, C, D
3P, 4P B, C, D
NXB-125G
63A, 80A, 100A, 125A
NXBLE-125 1P+N, 2P, C, D 0.03A, 0.05A, 0.075A,
3P, 3P+N, 4P 0.1A, 0.3A
NXBLE-125G B, C, D

Ordering example:NXB-40 C16 50 units

NXB-63 3P D63 50 units
NXBLE-63 1P+N C63 0.03A 30 units

Surge protector

Product model Remote signal contacts Inrush current Nominal discharge current Open circuit voltage Maximum continuous operating voltage Number of poles

Default: No 255V, 275V 1P, 1P+N, 2P,

NXU-Ⅰ+Ⅱ 12.5kA
F: Yes 3P, 3P+N, 4P

20kA, 40kA, 255V, 275V, 320V, 1P, 2P, 3P, 4P,

NXU-Ⅱ Default: No 385V, 440V 1P+N, 3P+N
65kA, 100kA
F: Yes
NXU-Ⅲ 10kV 255V, 275V, 320V, 385V 1P+N, 2P

Ordering example: NXU-Ⅰ+Ⅱ/F 12.5kA 275V 2P 300 units

NXU-Ⅱ/F 40kA 320V 2P 300 units
NXU-Ⅲ 10kV 320V 2P 300 units

Empower the World >> 12

Product description

Miniature Circuit Breaker

NXB-63 Miniature Circuit Breaker P-15

NXB-63H Miniature Circuit Breaker P-16

NXB-40 Miniature Circuit Breaker P-17

NXB-125 Moulded Case Circuit Breaker P-18

NXB-125G Miniature Circuit Breaker P-19

Residual current operated circuit breaker (RCBO)

NXBLE-32 Residual current operated circuit breaker (RCBO) P-20

NXBLE-63 Residual current operated circuit breaker (RCBO) P-21

NXBLE-63Y Residual current operated circuit breaker (RCBO) P-22

NXBLE-40 Residual current operated circuit breaker (RCBO) P-23

NXBLE-125 Residual current operated circuit breaker (RCBO) P-24

NXBLE-125G Residual current operated circuit breaker (RCBO) P-25

Accessories
AX-X1 Auxiliary contacts P-26

AL-X1 Alarm auxiliary contact P-27

SHT-X1 Shunt release P-29

OVT-X1 Overvoltage release P-31

UVT-X1 Under-voltage release P-32

OUVT-X1 Over/under voltage release P-33

AX-X3 Auxiliary contact P-34

AL-X3 Alarm auxiliary contact P-36

SHT-X3 Shunt release P-38

OVT-X3 Overvoltage release P-40

UVT-X3 Under-voltage release P-41

OUVT-X3 Over/under voltage release P-42

Surge protector

NXU-Ⅰ+Ⅱ Surge protector P-43

NXU-Ⅱ series surge protector P-45

NXU-Ⅲ series surge protector P-48

Isolation switch
NXHB-125 Isolation switch P-50
NXB-63 Miniature Circuit Breaker

NXB-63 Miniature Circuit Breaker

Compliant standards

IEC60898-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, positive isolation

Technical parameters

Rated current: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;
Rated voltage: 230V ~ (1P, 1P+N), 400V ~ (2 ~ 4P, 3P+N);
Frequency: 50/60Hz;
Electromagnetic release type: B, C, D;
Number of poles: 1P, 1P+N, 2P, 3P, 3P+N, 4P;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu): 6000A;
Short-circuit breaking capacity (Ics): 6000A;
Rated impulse withstand voltage (Uimp): 4kV;
Power consumption on each pole of the circuit breaker: see Table 1.

Table 1
Rated current In (A) Maximum power consumption per pole (W)
1~10 2
16~32 3.5
40~63 5

Dimensions and installation sizes

0
72 -1.20
3P+N, 4P
0
54 -1.20 0
3P 77.8 -1.20 (Multipolar)
0 0
36 -0.62 76.8 (Unipolar)
1P+N, 2P -1.20
0
18 -0.43 42.5±0.31
1P

tilf out
2
34.5±0.5

45±0.31
-1.20
0

1 lift
80

65.5±0.37

15 >> Empower the World

 NXB-80 Miniature Circuit Breaker

NXB-80 Miniature Circuit Breaker

Compliant standards

IEC60898-1

Compliant certification

CE

Major function

Overload protection, short circuit protection , positive isolation

Technical parameters

Rated current: 80A;

Rated voltage: 230V ~;
Frequency: 50/60Hz;
Electromagnetic release type: B, C, D;
Number of poles: 1P, 1P+N, 2P;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity: see Table 1;
Short-circuit breaking capacity: see Table 1;
Rated impulse withstand voltage Uimp(kV): 4;
Power consumption on each pole of the circuit breaker: ≤ 6.5W

Table 1

Number Rated Rated short-circuit Short-circuit

Model of poles voltage breaking capacity breaking capacity

1P, 1P+N 230V 6000A 6000A

NXB-80
2P 230V 6000A 6000A
NXB-80H 2P 230V 10000A 7500A

Dimensions and installation sizes

0
77.8 -1.20 (Multipolar)
0 0
36 -0.62 76.8 -1.20 (Unipolar)
1P+N, 2P
0
18 -0.43 42.5±0.31
1P

tilf out
2
45±0.31
34.5±0.5
-1.20
0

1 lift
80

65.5±0.37

Empower the World >> 16

NXB-40 Miniature Circuit Breaker

NXB-40 Miniature Circuit Breaker

Compliant standards

IEC60898-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, positive isolation

Technical parameters
Rated current: 6A, 10A, 16A, 20A, 25A, 32A, 40A;
Rated voltage: 230V;
Frequency: 50/60Hz;
Electromagnetic release type: C, D;
Number of poles: 1P+N;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu): 4500A;
Short-circuit breaking capacity(Ics): 4500A;
Rated impulse withstand voltage(Uimp): 4kV;
Power consumption on each pole of the circuit breaker: see Table 1.

Table 1
Rated current In (A) Maximum power consumption per pole (W)

1~10 2
16~32 3.5
40 5

Dimensions and installation sizes

45±0.31
-1.20
0

65.5±0.37
76.5

tilf out
2
44±0.31

lift 1

0 34.5±0.5
18 -0.43
77

17 >> Empower the World

NXB-125 Moulded Case Circuit Breaker

NXB-125 Moulded Case Circuit Breaker

Compliant standards

IEC60947-2

Compliant certification

CE

Major function

Overload protection, short circuit protection, positive isolation

Technical parameters
Rated current: 63A, 80A, 100A, 125A;
Rated voltage: 230V ~ (1P), 400V ~ (2P, 3P, 4P);
Frequency: 50/60Hz;
Electromagnetic release type: C, D;
Number of poles: 1P, 2P, 3P, 4P;
Mechanical life: 20000 cycles;
Electrical life: 6000 cycles (In≤100A); 4000 cycles (In＞100A);
Rated short-circuit breaking capacity(Icu): 10000A;
Short-circuit breaking capacity(Ics): 7500A;
Rated impulse withstand voltage(Uimp): 4kV;
Power consumption on each pole of the circuit breaker: see Table 1.
Table 1
Rated current In (A) Maximum power consumption per pole (W)

63 3.5
80 5.5
100 7.5
125 11.5

Dimensions and installation sizes

H
65.5±0.37
L 49.5±0.31

tilf out
2
80±0.23

34.5±0.5

45±0.31

1 pull out

1P 2P 3P 4P
0 0 0 0
L(mm) 27 -0.52 54 -0.74 81 -0.87 108 -1.40
0 0 0 0
H(mm) 75.5 -1.20 78.5 -1.20 78.5 -1.20 78.5 -1.20

Empower the World >> 18

 NXB-125G Miniature Circuit Breaker

NXB-125G Miniature Circuit Breaker

Compliant standards

IEC60898-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, positive isolation

Technical parameters

Rated current: 63A, 80A, 100A, 125A;

Rated voltage: 230V ~ (1P), 400V ~ (2P, 3P, 4P);
Frequency: 50/60Hz;
Electromagnetic release type: B, C, D;
Number of poles: 1P, 2P, 3P, 4P;
Mechanical life: 20000 cycles;
Electrical life: 6000 cycles (In≤100A); 4000 cycles (In＞100A);
Rated short-circuit breaking capacity(Icu): 10000A;
Short-circuit breaking capacity(Ics): 7500A;
Rated impulse withstand voltage(Uimp): 4kV;
Power consumption on each pole of the circuit breaker: see Table 1.
Table 1
Rated current In (A) Maximum power consumption p r pole (W)

63 3.5
80 5.5
100 7.5
125 11.5

Dimensions and installation sizes

H
65.5±0.37
L 49.5±0.31

tilf out
2
80±0.23

34.5±0.5

45±0.31

1 pull out

1P 2P 3P 4P
0 0 0 0
L(mm) 27 -0.52 54 -0.74 81 -0.87 108 -1.40
0 0 0 0
H(mm) 75.5 -1.20 78.5 -1.20 78.5 -1.20 78.5 -1.20

19 >> Empower the World

NXBLE-32 Residual current operated circuit breaker (RCBO)

NXBLE-32 Residual current operated circuit breaker (RCBO)

Compliant standards

IEC61009-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, positive isolation, residual current operation

Technical parameters

Rated current: 6A, 10A, 16A, 20A, 25A, 32A;

Rated residual operating current: 0.03A, 0.05A, 0.075A, 0.1A, 0.3A;
Rated voltage: 230V ~ (1P+N, 2P), 400V ~ (3P, 3P+N, 4P);
Frequency: 50/60Hz;
Electromagnetic release type: B, C, D;
Number of poles: 1P+N, 2P, 3P, 3P+N, 4P;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu): 6000A;
Short-circuit breaking capacity(Ics): 6000A;
Rated impulse withstand voltage(Uimp): 4kV.

Dimensions and installation sizes

L 42.5±0.31

tilf out
2
-1.40

45±0.31
35±0.50
0
94.5

1 lift

1P+N 2P 3P 3P+N 4P
0 0 0 0 0
L(mm) 45 -0.62 63 -0.74 90 -1.40 99 -1.40 117 -1.60
0 0 0 0 0
H(mm) 76.8 -1.20 77.8 -1.20 77.8 -1.20 77.8 -1.20 77.8 -1.20

Empower the World >> 20

NXBLE-63 Residual current operated circuit breaker (RCBO)

NXBLE-63 Residual current operated circuit breaker (RCBO)

Compliant standards

1EC61009-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, isolation, residual current operation

Technical parameters

Rated current: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;
Rated residual operating current: 0.03A, 0.05A, 0.075A, 0.1A, 0.3A;
Rated voltage: 230V ~ (1P+N, 2P), 400V ~ (3P, 3P+N, 4P);
Frequency: 50/60Hz;
Electromagnetic release type: B, C, D;
Number of poles: 1P+N, 2P, 3P, 3P+N, 4P;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu) : 6000A;
Short-circuit breaking capacity(Ics): 6000A;
Rated impulse withstand voltage(Uimp): 4kV;

Dimensions and installation sizes

L 42.5±0.31

tilf out
2
45±0.31
35±0.50
94.5 -1.40
0

1 lift

1P+N 2P 3P 3P+N 4P
0 0 0 0 0
L(mm) 54 -0.74 72 -0.74 103.5 -1.40 117 -1.40 135 -1.60
0 0 0 0 0
H(mm) 76.8 -1.20 77.8 -1.20 77.8 -1.20 77.8 -1.20 77.8 -1.20

21 >> Empower the World

NXBLE-63Y Residual current operated circuit breaker (RCBO)

NXBLE-63Y Residual current operated circuit breaker (RCBO)

Compliant standards

1EC61009-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, isolation, residual current operation

Technical parameters

Rated current: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;
Rated residual operating current: 0.01A, 0.03A;
Rated voltage: 230V ~ ;
Frequency: 50/60Hz;
Electromagnetic release type: C, D;
Number of poles: 1P+N;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu) : 4500A;
Short-circuit breaking capacity(Ics): 4500A;
Rated impulse withstand voltage(Uimp): 4kV;

Dimensions and installation sizes

77±0.37
45±0.31
-1.20
0
76.8

2
tilf out

1 lift

34.5±0.5
0
36 -0.62

Empower the World >> 22

NXBLE-40 Residual current operated circuit breaker (RCBO)

NXBLE-40 Residual current operated circuit breaker (RCBO)

Compliant standards

1EC61009-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, isolation, residual current operation

Technical parameters

Rated current: 6A, 10A, 16A, 20A, 25A, 32A, 40A;

Rated residual operating current: 0.01A, 0.03A;
Rated voltage: 230V ~ ;
Frequency: 50/60Hz;
Electromagnetic release type: C, D;
Number of poles: 1P+N;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icu): 4500A;
Short-circuit breaking capacity(Ics): 4500A;
Rated impulse withstand voltage(Uimp): 4kV.

Dimensions and installation sizes

65.5±0.37
44±0.31

tilf out
2
34.5±0.5
45±0.31

-1.40
0
85.1

lift 1

0 0
76.5 -1.20 36 -0.62

23 >> Empower the World

NXBLE-125 Residual current operated circuit breaker (RCBO)

NXBLE-125 Residual current operated circuit breaker (RCBO)

Compliant standards

EC60947-2

Compliant certification

CE

Major function

Overload protection, short circuit protection, isolation, residual current operation

Technical parameters

Rated current: 63A, 80A, 100A, 125A;

Rated residual operating current: 0.03A, 0.05A, 0.075A, 0.1A, 0.3A;
Rated voltage: 230V ~ (1P+N, 2P), 400V ~ (3P, 3P+N, 4P);
Frequency: 50/60Hz;
Electromagnetic release type: C, D;
Number of poles: 1P+N, 2P, 3P, 3P+N, 4P;
Mechanical life: 20000 cycles;
Electrical life: 6000 cycles (In≤100A); 4000 cycles (In> 100A);
Rated short-circuit breaking capacity(Icu): 10000A;
Short-circuit breaking capacity(Ics): 7500A;
Rated impulse withstand voltage(Uimp): 4kV.

Dimensions and installation sizes

H
65.5±0.37
L
49.5±0.31

tilf out
34.5±0.5

2
45±0.31
108±0.70

1 pull out

1P+N 2P 3P 4P
0 0 0 0
L(mm) 54 -0.74 81 -0.87 108 -1.40 135 -1.60
0 0 0 0
H(mm) 75.5 -1.20 78.5 -1.20 78.5 -1.20 78.5 -1.20

Empower the World >> 24

NXBLE-125G Residual current operated circuit breaker (RCBO)

NXBLE-125G Residual current operated circuit breaker (RCBO)

Compliant standards

1EC61009-1

Compliant certification

CE

Major function

Overload protection, short circuit protection, isolation, residual current operation

Technical parameters

Rated current: 63A, 80A, 100A, 125A;

Rated residual operating current: 0.03A, 0.05A, 0.075A, 0.1A, 0.3A;
Rated voltage: 230V ~ (1P+N, 2P), 400V ~ (3P, 3P+N, 4P);
Frequency: 50/60Hz;
Electromagnetic release type: B, C, D;
Number of poles: 1P+N, 2P, 3P, 3P+N, 4P;
Mechanical life: 20000 cycles;
Electrical life: 6000 cycles (In≤100A); 4000 cycles (In＞100A);
Rated short-circuit breaking capacity(Icu): 10000A;
Short-circuit breaking capacity(Ics): 7500A;
Rated impulse withstand voltage(Uimp): 4kV.

Dimensions and installation sizes

H
65.5±0.37
L
49.5±0.31

tilf out
34.5±0.5

2
45±0.31
108±0.70

1 pull out

1P+N 2P 3P 4P
0 0 0 0
L(mm) 54 -0.74 81 -0.87 108 -1.40 135 -1.60
0 0 0 0
H(mm) 75.5 -1.20 78.5 -1.20 78.5 -1.20 78.5 -1.20

25 >> Empower the World

 AX-X1 Auxiliary contacts

AX-X1 Auxiliary contacts

Compliant standards

IEC60947-5-1

Compliant certification

CE

Major function

To achieve long-distance signal indication for the open/close status of the circuit breaker

Parameters and performance

Table 1
Utilization category Rated operating voltage V Rated operating current A
AC 415 3
AC-12
AC 240 6
DC 130 1
DC 48 2
DC-12
DC 24 6

Figure 1
Action characteristics: Figure 1 shows the
11
wiring diagram for auxiliary contacts.
When the auxiliary contacts is open, terminals
11 and 12 are connected;
When the auxiliary contacts is closed, terminals
11 and 14 are connected.
12
Life: Operating life of auxiliary contacts is
14
≥ 10000 cycles.

Assembly and installation of the product

Can be assembled with NXB-63, NXB-40 series circuit breakers, with assembly diagram
shown below:
Figure 2

① Remove the left

cover on the
circuit breaker
②

After AX-X1 is assembled with the circuit breaker, mount them on the TH3.5-7.5 steel
mounting rail.
Dimensions and installation sizes

Figure 3
79 -1.40

45±0.31
0

0
9 -0.36
42.5±0.31
0
76.7 -1.20

Empower the World >> 26

AL-X1 Alarm auxiliary contact

AL-X1 Alarm auxiliary contact

Compliant standards

IEC60947-5-1

Compliant certification

CE

Major function

To achieve signal indication over long distance for open/close status of the circuit
breaker and alarm.

Parameters and performance

Table 1
Utilization category Rated operating voltage V Rated operating current A
AC 415 3
AC-12
AC 240 6
DC 130 1

DC-12 DC 48 2
DC 24 6

Action characteristics: Figure 1 shows the

Figure 1
wiring diagram for auxiliary contact.When the
auxiliary contact is open, terminals 91 and 94
are connected;When the auxiliary contact is
closed, terminals 91 and 92 are connected.
When the alarm auxiliary contact is closed,
and manually opened with the handle,
terminals 91 and 92 shall still be connected;
94 92 91
when the alarm auxiliary contact is closed,
and the assembled circuit trip is open due
to error, terminals 91 and 92 shall be open,
and terminals 91 and 94 shall be connected;
Life: Operating life of alarm auxiliary contact
is ≥ 10000 cycles.

Assembly and installation of the product

Can be assembled with NXB-63, NXB-40 series circuit breakers, with assembly diagram
shown below:

Figure 2

① Remove the
left cover on the ②
circuit breaker

After AL-X1 is assembled with the circuit breaker, mount them on the TH3.5-7.5 steel
mounting rail.

27 >> Empower the World

 AL-X1 Alarm auxiliary contact

Dimension and installation sizes

Figure 3

45±0.31
-1.40
0
79

0
9 -0.36 42.5±0.31
0
76.7 -1.20

Empower the World >> 28

SHT-X1 Shunt release

SHT-X1 Shunt release

Major function

To be assembled with the circuit breaker to achieve remote shunt trip.

Parameters and performance

Table 1

Rated insulation voltage (Ui): 500V; Rated operating Rated operating

voltage (V) current (A)
Rated operation current under different
AC 400 3
rated operation voltage (see Table 1):
AC 230 6
Utilization category: AC-12, DC-12. AC/DC 48 3

AC/DC 24 6

Action characteristics: within the range

Figure 1
of 70% ~ 110% of the rated control supply
voltage, the release should operate L
reliably to open the circuit breaker. Figure
C1 C2
1 shows the wiring diagram for the release.
When the release is open, terminal C2
and 12 shall be connected, and the
14 12
external security indicator shall light up;
when the release is closed, terminal C2
N
and 14 shall be connected, and the
external warning indicator shall light up;
when the release is closed, and the
external button is connected, the release
shall trip and drive the circuit breaker to
trip and be opened. Meanwhile, the
release indicator shall display trip mark.
Mechanical life: operating life of the
release is ≥ 4000 cycles.

Assembly and installation of the product

SHT-X1 can be assembled with NXB-63 or NXB-40 series circuit breaker, with the assembly
diagram shown below:

Figure 2

②
①Remove the
left cover on
the circuit
breaker

After SHT-X1 is assembled with the circuit breaker, mount them on TH35-7.5 steel
mounting rail.

29 >> Empower the World

 SHT-X1 Shunt release

Dimensions and installation sizes

Figure 3

-1.40

45±0.31
0
79

0
18 -0.43 43.5±0.31
0
76.7 -1.20

Empower the World >> 30

OVT-X1 Overvoltage release

OVT-X1 Overvoltage release

Major function

To be assembled with the circuit breaker to achieve overvoltage protection.

Parameters and performance

Rated operation voltage Ue: AC 230V 50Hz (or 60Hz).

Rated insulation voltage Ui: 500V.
Overvoltage setting value Uvo: 280V.
Release action characteristics: when the main circuit voltage is in the range of (85% ~
110%) Ue, the release shall be able to keep the circuit breaker to work reliably for long
term. When the main circuit voltage is increased to 280 (1 ± 5%) V, the release assembled
with NXB-63 series circuit breaker should act and trip open NXB-63 circuit breaker.
Mechanical and electrical life: the mechanical and electrical life of release is ≥4000
operation cycles.

Assembly and installation of the product

OVT-X1 can be assembled with NXB-63 or NXB-40 series circuit breaker, with the assembly
diagram shown below:

Figure 1

① Remove the left

cover on the circuit
breaker

After the release is assembled with the circuit breaker, mount them on TH35-7.5 steel
mounting rail.

Dimensions and installation sizes

Figure 2

0
18 -0.43
-1.40

45±0.31
0
79

43.5±0.31
0
76.7 -1.20

31 >> Empower the World

 UVT-X1 Under-voltage release

UVT-X1 Under-voltage release

Major function

To be assembled with the circuit breaker to achieve overvoltage protection.

Parameters and performance

Rated operation voltage Ue: AC 230V

Rated insulation voltage Ui 500V
Action characteristics: when the applied voltage ≤35% Ue, the product should prevent
circuit breaker from closing; when 35% Ue≤ applied voltage ≤70% Ue, the product
should operate and drive the circuit breaker open; when the applied voltage ≥85% Ue,
the product should be able to close. The applied voltage should not exceed 110%Ue.
Life: the operating life of the release is ≥ 4000 cycles.

Assembly and installation of the product

UVT-X1 can be assembled with NXB-63 or NXB-40 series circuit breaker, with the assembly
diagram shown below:

Figure 1

②
① Remove the left
cover on the circuit
breaker

After the release is assembled with the circuit breaker, mount them on TH35-7.5 steel
mounting rail.

Dimensions and installation sizes

Figure 2

0
18 -0.43
45±0.31
-1.40
0
79

43.5±0.31
0
76.7 -1.20

Empower the World >> 32

OUVT-X1 Over/under voltage release

OUVT-X1 Over/under voltage release

Major function

To be assembled with circuit breaker to achieve over/under voltage protection

Parameters and performance

Rated operation voltage Ue: AC 230V, 50Hz;

Overvoltage operation setting value Uvo: 280V;
Rated insulation voltage Ui: 500V;
Tripping characteristics: the release is assembled with NXB-63 series circuit breaker. When
the applied voltage is reduced to 35%Ue or increased to 95% ~ 105% of the over-voltage
setting value, the release should drive the circuit breaker to act. When the applied
voltage is below 35%Ue or above 105% of the over-voltage setting value, the release
should be able to prevent the circuit breaker from closing. When the supply voltage is
above 85% Ue and below 95% of over-voltage setting value, the circuit breaker should be
able to close normally. The upper limit of the applied voltage should be less than 110%
over-voltage operation setting value.
Mechanical and electrical life: the mechanical and electrical life after the release is
assembled with the circuit breaker should be ≥ 4000 cycles, of which, 500 cycles for
over-voltage trip and under-voltage trip each, and 3000 cycles for the open/close of the
circuit breaker.

Assembly and installation of the product

OUVT-X1 can be assembled with NXB-63 or NXB-40 series circuit breaker, with the assembly
diagram shown below:
Figure 1

②
① Remove the
left cover on the
circuit breaker

After AL-X1 is assembled with the circuit breaker, mount them on the TH3.5-7.5 steel
mounting rail.

Dimensions and installation sizes

Figure 2

0
18 -0.43
45±0.31
-1.40
0
79

43.5±0.31
0
76.7 -1.20

33 >> Empower the World

 AX-X3 Auxiliary contact

AX-X3 Auxiliary contact

Major function

IEC60947-5-1

Compliant certification

CE

Major function

To be assembled with the circuit breaker to achieve long-distance signal indication for the
open/close status of the circuit breaker

Parameters and performance

Rated operating currents under different working voltages: Table 1
Utilization category Rated operating voltage V Rated operating current A
AC 415 3
AC-12
AC 240 6
DC 130 1
DC-12 DC 48 2
DC 24 6

Action characteristics: Figure 1 shows the Figure 1

wiring diagram for auxiliary contacts.When 11

the auxiliary contacts is open, terminals 11

and 12 is connected; When the auxiliary
contacts is closed, terminals 11 and 14 is
connected. 12

Life: Operating life of auxiliary contacts is ≥ 14

10000 cycles.

Assembly and installation of the product

AX-X3 can be assembled with NXB-125, NXB-125G series circuit breaker, with the assembly
diagram shown below:

Figure 2

① Remove the
left cover on the
circuit breaker ②

After AX-X3 is assembled with the circuit breaker, mount them on the TH3.5-7.5 steel
mounting rail.

Empower the World >> 34

AX-X3 Auxiliary contact

Dimensions and installation sizes

Figure 4

0
9 -0.36 AX-X3

45±0.31
81 -1.40
0

49.5±0.31
0
75.2 -1.20

35 >> Empower the World

 AL-X3 Alarm auxiliary contact

AL-X3 Alarm auxiliary contact

Compliant standards

IEC60947-5-1

Compliant certification

CE

Major function

To be assembled with the circuit breaker to achieve signal indication over long distance
for open/close status of the circuit breaker and alarm.

Parameters and performance

Rated operation currents under different working voltages:
Table 1
Utilization category Rated operating voltage V Rated operating current A
AC 415 3
AC-12
AC 240 6
DC 130 1
DC-12 DC 48 2
DC 24 6

Action characteristics: Figure 1 shows the wiring diagram Figure 1

for auxiliary contact.
When the auxiliary contact is open, terminals 91 and 94 is
connected; When the auxiliary contact is closed, terminals
91 and 92 is connected. When the alarm auxiliary contact
is closed, and manually open with the handle, terminals 91
and 92 shall still be connected; when the alarm auxiliary 94 92 91

contact is closed, and the assembled circuit trip open due

to error, terminals 91 and 92 shall be open, and terminals
91 and 94 shall be connected;
Life: Operating life of alarm auxiliary contact is ≥ 10000 cycles.

Assembly and installation of the product

AL-X3 can be assembled with NXB-125 series circuit breaker, with the assembly diagram
shown below:

Figure 2

① Remove the left

cover on the
circuit breaker ②

After AL-X3 is assembled with the circuit breaker, mount them on the TH3.5-7.5 steel
mounting rail.

Empower the World >> 36

AX-X3 Auxiliary contact

Dimensions and installation sizes

Figure 2
0
18 -0.43
45±0.31

81 -1.40
0

50.5±0.31
0
75.2-1.2

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 SHT-X3 Shunt release

SHT-X3 Shunt release

Major function

To be assembled with the circuit breaker to achieve remote shunt trip.

Parameters and performance

Table 1

Rated insulation voltage (Ui): 500V; Rated operating Rated operating

voltage (V) current (A)
Rated operation current under different
AC 400 3
rated operation voltage (see Table 1):
AC 230 6
Utilization category: AC-12, DC-12. AC/DC 48 3

AC/DC 24 6

Action characteristics: within the range

Figure 1
of 70% ~ 110% of the rated control supply
voltage, the release should operate L
reliably to open the circuit breaker. Figure
C1 C2
1 shows the wiring diagram for the release.
When the release is open, terminal C2
and 12 shall be connected, and the
14 12
external security indicator shall light up;
when the release is closed, terminal C2
N
and 14 shall be connected, and the
external warning indicator shall light up;
when the release is closed, and the
external button is connected, the release
shall trip and drive the circuit breaker to
trip and be opened. Meanwhile, the
release indicator shall display trip mark.
Mechanical life: operating life of the
release is ≥ 4000 cycles.

Assembly and installation of the product

SHT-X3 can be assembled with NXB-125 circuit breaker, with the assembly diagram shown
below:

Figure 2

②
①Remove the
left cover on
the circuit
breaker

After the release is assembled with the circuit breaker, mount them on TH35-7.5 steel
mounting rail.

Empower the World >> 38

SHT-X1 Shunt release

Dimensions and installation sizes

Figure 3

-1.40

45±0.31
0
79

0
18 -0.43 43.5±0.31
0
76.7 -1.20

39 >> Empower the World

 OVT-X3 Overvoltage release

OVT-X3 Overvoltage release

Major function

To be assembled with the circuit breaker to achieve overvoltage protection.

Parameters and performance

Rated operation voltage Ue: AC 230V 50Hz (or 60Hz).

Rated insulation voltage Ui: 500V.
Overvoltage setting value Uvo: 280V.
Release action characteristics: when the main circuit voltage is in the range of (85% ~ 110%)
Ue, the release shall be able to keep the circuit breaker to work reliably for long term.
When the main circuit voltage is increased to 280 (1 ± 5%) V, the release assembled
with NXB-125series circuit breaker should act and trip open NXB-125 circuit breaker.
Mechanical and electrical life: the mechanical and electrical life of release is ≥ 4000
operation cycles.

Assembly and installation of the product

OVT-X3 can be assembled with NXB-125 series circuit breaker, with the assembly diagram
shown below:

Figure 1

②
① Remove the right 、
cover on the circuit
breaker

After the release is assembled with the circuit breaker, mount them on TH35-7.5 steel
mounting rail.

Dimensions and installation sizes

Figure 2
0
18 -0.43
45±0.31

81 -1.40
0

50.5±0.31
0
75.2 -1.2

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UVT-X3 Under-voltage release

UVT-X3 Under-voltage release

Major function

To be assembled with the circuit breaker to achieve under-voltage protection

Parameters and performance

Rated operation voltage Ue: AC230V

Rated insulation voltage Ui 500V
Life: the operating life of the release is ≥ 4000 cycles.
Action characteristics: when the applied voltage ≤35% Ue, the product should
prevent circuit breaker from closing; when 35% Ue≤applied voltage ≤70% Ue, the
product should operate and drive the circuit breaker open; when the applied
voltage ≤85% Ue, the product should be able to close. The applied voltage should
not exceed 110%Ue.

Assembly and installation of the product

UVT-X3 can be assembled with NXB-125 series circuit breaker, with the assembly
diagram shown below:

Figure 1

①Remove the
right cover
on the circuit
breaker

After the release is assembled with the circuit breaker, mount them on TH35-7.5
steel mounting rail.

Dimensions and installation sizes

Figure 1

0
18 -0.43
81 -1.40
45±0.31

50.5±0.31
0
75.2 -1.2

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OUVT-X3 Over/under voltage release

OUVT-X3 Over/under voltage release

Major function

To be assembled with circuit breaker to achieve over/under voltage protection

Parameters and performance

Rated operation voltage Ue: AC230V, 50Hz;

Overvoltage operation setting value Uvo: 280V;
Rated insulation voltage Ui: 500V;
Tripping characteristics: the release is assembled with NXB-125 series circuit breaker. When
the applied voltage is reduced to 35%Ue or increased to 95% ~ 105% of the over-voltage
setting value, the release should drive the circuit breaker to act. When the applied voltage
is below 35%Ue or above 105% of the over-voltage setting value, the release should be
able to prevent the circuit breaker from closing. When the supply voltage is above 85%
Ue and below 95% of over-voltage setting value, the circuit breaker should be able to close
normally. The upper limit of the applied voltage should be less than 110% over-voltage
operation setting value.
Mechanical and electrical life: the mechanical and electrical life after the release is assembled
with the circuit breaker should be ≥ 4000 cycles, of which, 500 cycles for over-voltage trip
and under-voltage trip each, and 3000 cycles for the open/close of the circuit breaker.

Assembly and installation of the product

OUVT-X3 can be assembled with NXB-125 series circuit breaker, with the assembly diagram
shown below:

Figure 1

①Remove the
right cover
on the circuit
breaker

After OUVT-X3 is assembled with the circuit breaker, mount them to TH35-7.5 steel
mounting rail.

Dimensions and installation sizes

Figure 2

0
18 -0.43
81 -1.40
45±0.31

50.5±0.31
0
75.2 -1.2

Empower the World >> 42

NXU-Ⅰ+Ⅱ Surge protector

NXU-Ⅰ+Ⅱ Surge protector

Compliant standards

IEC/EN61643-11。

Compliant certification

CE

Major function

Lightning protection and surge protection for the inlet cabinet

Technical parameters

NXU-Ⅰ+Ⅱ

General distribution
protection (IEC/EN
61643-11; GB18802.1)

Number of poles 1P 2P 3P 4P 1P+N 3P+N

L-PE
Protection mode L-PE L-N L-PE L-PE N-PE L-N N-PE L-N N-PE
N-PE

Electrical Performance
Test category I, II
Frequency (Hz) 50/60
Maximum continuous operation voltage ( V ) 275 255 275 255
Inrush current (10 / 350μs) Iimp (kA) (kA) 12.5 50 12.5 50
Nominal discharge current (8 / 20μs) In (kA) 25 50 25 50
Maximum discharge current (8 / 20μs) Imax (kA) 50 60 50 50
Voltage protection level Up (kA) 1.5 1.5 1.5 1.5
Rated load current IL (A) - - - -
Rated opening follow current value Ifi (A) No follow current 100 No follow current 100
Maximum backup fuse (gL / gG) (A) 160 - 160 -

Short circuit current withstand capacity

(kA) 10 - 10 -
when maximum backup fuse

Remote control and indication This function is optional according to the need.
Operation status/fault indication Green/Red Green/Red
Remote signaling terminals connection capacity Max 1.5mm
2
Max 1.5mm2
AC 250V/0.5A 250V/0.5A
Remote signal switching capability
DC 250V/0.1A;75V/0.5A 250V/0.1A;75V/0.5A
Connection and installation

Protection class IP20

Mounting TH35-7.5 / DIN35 rail mounting
Wire stripping length (mm) 12
2
Connection capacity (mm ) 2.5 ~ 35
Screw size M5
Rated torque (N·m) 2.5
Torque limit (N·m) 5
Ambient temperature (℃ ) -40～+70
Altitude (m) ≤2000
Relative humidity ≤95% @+ 20 ℃ ;≤50% @+ 40 ℃
Installation environment No significant vibration and shock
Weight (g) 157 300 437 578 309 569

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 NXU-Ⅰ+Ⅱ Surge protector

Dimensions and installation sizes

Fig 1 Dimension & installation sizes of surge protector with remote signaling
NXU-I+II/F

79.2±0.23
45±0.31

34.5±0.5

88.7

0
65.7±0.37 18 -0.43
1P
0
36 -0.62
1P+N2P
0
54 -1.20
3P
0
72 -1.20
3P+N4P

Fig 2 Dimension & installation sizes of surge protector without remote signaling contacts
NXU-I+II
79.2±0.23
45±0.31

34.5±0.5

0
65.7±0.37 18 -0.43
1P
0
36 -0.62
1P+N2P
0
54 -1.20
3P
0
72 -1.20
3P+N4P

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NXU-Ⅱseries surge protector

NXU-Ⅱseries surge protector

Compliant standards

IEC/EN61643-11.

Compliant certification

CE

Major function

Lightning protection and surge protection for the inlet cabinet

Parameters and performance

Basic parameters and technical performance indicators (see Table 1)

Table 1
Technical parameters Parameter value
Maximum discharge current (kA) 20, 40, 65, 100
Maximum continuous operation voltage (V ~) 255, 275, 320, 385, 440

Nominal discharge current (kA) 10, 20, 30, 40

Voltage protection level (kV) 1.2, 1.3, 1.5, 1.6, 1.8, 1.9, 2.0, 2.2

Number of poles 1P, 2P, 3P, 4P, 1P+N, 3P+N

Connecting wires (mm2) ≤16

Tightening torque (N·m) 2.0
protection degree IP20
Dimensions See Fig 2-5
Backup protection fuses See Table 3

Select the appropriate size depending on the grounding system and protection mode.

Table 2
Grounding system TT TN-C TN-S IT Notes

Maxi um operation voltage of Refer

the grid Us.max 345V 253V 253V 400V IEC 60364-5-534

Common mode protection* We reommend to

— 1P, 3P 2P, 4P —
Uc=255V,275V,320V choose 320V

NXU-Ⅱ Common mode protection*

2P, 4P 1P, 3P 2P, 4P —
Uc=385V

Common mode protection*

2P, 4P 1P, 3P 2P, 4P 3P
Uc=385V

* Common mode protection: phase-to-ground and neutral-ground protection.

Backup fuse selection

Table 3

Surge protector Maximum discharge Backup fuse

model current (kA) Rated current (A) Breaking range
20 63 gL/gG
40 125 gL/gG
NXU-Ⅱ
65 160 gL/gG
100 250 gL/gG

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 NXU-Ⅱseries surge protector

Special feature: Figure

图1 1
a. NXU- II surge protector consists of two major components, the
3
protection module (4) and base (2), their structures are completely 4
independent of each other, and can be plugged/unplugged as
shown in Figure 1.
b. NXU- II surge protector is configured with a degradation indicator Insert

t
(3), as shown in the figure. After the product gets degraded, it shall

P u ll o u
pop up on the surface of protection module (4) for warning. The
protection module (4) should be immediately replaced, and there
is no need to disconnect the line or rewire.
2
(1) in the figure is the maximum continuous operation voltage
indication of the surge protector, it can also be used to prevent
1
modules of erroneous dimensions get inserted when changing
the module. The value pointed by the heart-shaped angular
pointer is the maximum continuous operation voltage of the
product.

Dimensions and installation sizes

See Table 4, Figure 2-5 for dimensions and installation sizes.

Table 4

Maximum discharge current Dimensions mm

Imax (kA) 1P 2P 3P 4P
20, 40, 65 18 36 54 72
100 36 72 108 144

Fig 2 Dimensions and installations sizes of surge protector with remote signal outputs
NXU-II/F(20kA, 40kA, 65kA)
Remote signal output
-1.40
34.5±0.5
45±0.31

0
95.5

5.5±0.1 0
18 -0.43
1P
44.5±0.31 0
1P+N, 2P 36 -0.62
65.5±0.37 0
54 -1.20
3P
0
72 -1.20
3P+N, 4P

Fig 3 Dimensions and installation sizes of surge protector without remote signal outputs
NXU-II (20kA, 40kA, 65kA)
45±0.31

-1.40
34.5±0.5

0
82

5.5±0.1 0
18 -0.43
1P
44.5±0.31 0
36 -0.62
1P+N, 2P
65.5±0.37 0
54 -1.20
3P
0
72 -1.20
3P+N, 4P

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NXU-Ⅱseries surge protector

Fig 4 Dimensions and installations sizes of surge protector with remote signal outputs
NXU-II/F(100kA)
Remote signal outputs

95.5 -1.40
45±0.31

0
34.5±0.5

5.5±0.1 0
36 -0.62
1P
44.5±0.31 0
54 -1.20
1P+N
65.5±0.37 0
72 -1.20
2P
0
108 -1.20
3P
0
126 -1.40
3P+N
0
144 -1.60
4P

NXU-II(100kA) Fig 5 Dimensions and installation sizes of surge protector without remote signal outputs
45±0.31

34.5±0.5

-1.40
0
82

5.5±0.1 0
36 -0.62
1P
44.5±0.31 0
54 -1.20
1P+N
65.5±0.37 0
72 -1.20
2P
0
108 -1.20
3P
0
126 -1.40
3P+N
0
144 -1.60
4P

47 >> Empower the World

 NXU-Ⅲ series surge protector

NXU-Ⅲ series surge protector

Compliant standards

IEC/EN61643-11.

Compliant certification

CE

Major function

Inhibit transient over-voltage amplitude and relieve surge energy.

Parameters and performance

Basic parameters and technical performance indicators (see Table 1) Table 1

Technical parameters Parameter value
Test category Category III
Open-circuit voltage (kV) 10
Short circuit current (kA) 5
Maximum continuous operation voltage (V ~) 255, 275, 320, 385
Voltage protection level (kV) 1.5
Number of poles 1P+N, 2P
Connecting wires (mm2) ≤16
Tightening torque (N·m) 1.2, 2.0
protection degree IP20
Dimensions and installation sizes See Fig 2 and Fig 3
Backup protection circuit breaker NB1-63 C10

Design type and protection mode combination corresponding to different models of

surge protector (see Table 2)
Table 2

Open circuit voltage Maximum continuous Design type and pole

(1.2/50μs) (kV) operation voltage Uc (V ~) number combination

320 Compound
10
385 2P

Compound
10 275 1P+N

Special feature:
The surge protector is configured with
Figure 1
a degradation indicator (3), as shown
3
in Figure 1. After the product gets
4
degraded, it shall pop up on the surface
of protection module (4) for warning.
The protection module (4) should be Insert
R

immediately replaced, and there is no

P u ll o u

need to disconnect the line or rewire.

(1 ) i s t h e m a x i m u m c o n t i n u o u s
operation voltage indication of the surge
2
protector, it can also be used to prevent
modules with erroneous dimensions 1
get inserted when changing the module.
The value pointed by the heart-shaped
angular pointer is the maximum continuous
operation voltage of the product.

Empower the World >> 48

NXU-Ⅲ series surge protector

Surge protector maximum continuous operation voltage Uc selection:

Table 3

Grounding system TT TN IT NOTE

Refer
Maximum operation voltage of the grid Us.max 345V 253V 400V
IEC 60364-5-534

Common mode protection*

2P
Uc=320V,385V
NU6-Ⅲ
Differential mode protection* 1P+N
Uc=275V

Common mode protection: phase-to-ground and neutral-ground protection.

Differential mode protection: phase-to-phase or phase-to-neutral, neutral-to-ground protection.

Dimensions and installation sizes

See Figure 2 and 3 for dimensions and installation sizes.

Figure 2 Dimensions and installation sizes of surge protector with remote signaling outputs
NXU-III/F
Remote signaling outputs
-1.40
45±0.31

34.5±0.5
0
95.5

0
18 -0.43
5.5±0.1

44.5±0.31

65.5±0.37

TH35 - 7.5 steel rail mounting.

Figure 3 Dimensions and installation sizes of surge protector without remote signaling outputs
NXU-III
-1.40
45±0.31

34.5±0.5
0
82

0
18 -0.43
5.5±0.1

44.5±0.31

65.5±0.37

49 >> Empower the World

 NXHB-125 Isolation switch

NXHB-125 Isolation switch

Compliant standards

IEC60947-3

Compliant certification

CE

Major function

Isolation function

Parameters and performance

Rated current Ie: 20A, 32A, 40A, 63A, 80A, 100A, 125A;
Number of poles: 1P, 2P, 3P, 4P;
Rated insulation voltage Ui: 500V;
Rated operation voltage Ue: 230V~(1P), 400V~(2P, 3P, 4P);
Rated impulse withstand voltage Uimp: 6kV;
Rated short time withstand current Icw: 12 Ie, power-on time of 1s;
Rated short-circuit making capacity Icm: 20Ie, power-on time of 0.1s;
Rated making and breaking capacity: 3Ie, 1.05Ue, COSφ=0.65;
Operation performance: mechanical life of 10,000 cycles, electrical life of 3000 cycles;
Pollution degree: II;
Utilization category: AC-22A, AC-21B;
Installation category: II, III;
Installation: TH35-7.5 steel rail mounting, the gradient of the mounting surface from the
vertical plane should be ≤5°;
Wiring: screw clamp wiring, tightening torque 3.5N·m (80A ~ 125A);
tightening torque 2.0N·m(20A ~ 63A).

Dimensions and installation sizes

Fig 1 Dimensions and installation sizes

44.5±0.31
80 -1.20

34.5±0.5

45±0.31
0

0 65.5±0.37
18 -0.43
1P H
0
36 -0.62
2P
0
54 -1.20
3P
0
72 -1.20
4P

1P 2P~4P
0 0
H(mm) 76.3 -1.2 78 -1.2

Empower the World >> 50

Note

Note

51 >> Empower the World

 Note

Note

Empower the World >> 52

Europe
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CHINT Electrics Europe S.R.L. CHINT Electrics S.L.
Add: Via A. Pacinotti 28, 30033 Noale (VE)
Tel: 0039 335 6265 032
E-mail: chint_eu@chint.com

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Add:Sezemická 2757/2, 193 00 Prague
Tel: +420 226 203 120
Email: Europe@noark-electric.com
www.noark-electric.eu

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NOARK Electric (USA) Inc. CHINT Electrics South America Ltd
Add: 2188 Pomona Blvd., Pomona, CA 91767 Add: Avenida Paulista nº 2073 – Conjunto Nacional – Edifício Horsa 1-
Tel: 626-330-7007 Conjunto Room 1407/1408 , Sao Paulo 01311-300
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U.A.E China
CHINT West Asia & Africa FZE Zhejiang CHINT Electrics Co.,Ltd

ZHEJIANG CHINT ELECTRICS CO.,LTD.

Add: No. 1, CHINT Road, CHINT Industrial Zone, North Baixiang,
CHINT No EN K01

Yueqing, Zhejiang, 325603, P.R.China

Tel: +86-577-61986198
Fax: +86-577-62775769 62871811
E-mail: global-sales@chint.com
Website: http://next.chint.com/ July 2016

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Specifications and technical data are subject to change without notice.

Please contact us to confirm relevant information on ordering