Home
Products
Low Voltage
Power Transmission and Distribution
Low Voltage Switchgear and Software
Instruments & Meters
EV Charging
IEC

UL

Transmission

Distribution

Power Quality & Automation

Main Distribution Board

Sub Distribution Board

Final Distribution Box

Software

Intelligent Solution

Core Parts

Gas Meter

Electricity Meter

EV Charger

Main Power Distribution Sub Power Distribution Final Power Distribution Industrial Control
Main Power Distribution(UL) Sub Power Distribution(UL) Final Power Distribution(UL) Industrial Control(UL)
Solutions
Power Utility
OEM
Telecom & Data Center
New Energy
Industry
Buildings
Transmission Grid

Distribution Grid

Generator Equipment

Modern Logistics Equipment

Pumps and Vacuum Equipment

Food and Beverage

Mining Machinery

HVAC

Elevator

Data Center

Residential PV & ESS

Utility PV & ESS

Commercial and Industry PV

BESS

Metallurgical

Oil & Gas

Rail Transportation

Mining and Petrochemical

Buildings

Substation Mobile Substations
Micro-Grid Solution Intelligent Power Distribution Solutions
Generator Control System Solution Generator Dual Power Supply Control System Solution Diesel Generator
Conveyor Control Box Solution Control Box Solution for Telescopic Conveyor Lifts
Water Supply Control System Solution Sewage Control System Solution Fire Pump Control System Solution
Food and Beverage Control System Solution
Sand and Gravel Production Line Electrical Control System Solution
Containerised Solution Fusion Module Solution
Residential Solar Power Solution
Utility Scale Power Storage Solution C&I Storage Solution
High, Medium, and Low Voltage Digital Distribution Solution Intelligent Motor Control Center Solution
Refining Production Power Distribution and DCS Control System Solution Oilfield Extraction Power Distribution Solution Integrated Electrical Control and Instrumentation Solution for Oil and Petrochemical Industries
Power Transmission and Distribution Low Voltage Intelligent Distribution Low Voltage Control and Protection Low Voltage Distribution and Control Low Voltage Motor Control Low Voltage Reactive Power Compensation
Main Distribution System Solution Secondary Distribution System Solution Final Distribution System Solution Capacitor Cabinet Solution Elevator Control Solution Emergency Lighting Solution Fan Control Solution Meter Box Solution Pump Room Solution SVG Capacitor Solution
Sustainability
Services
Service Center
Download Center
Contact Us
Find a local subsidiary

Product Documents

Solutions

Cases

Corporate Report

Contact Us

Call Us 400-117-7797
Email Us global-sales@chint.com
About Us
About CHINT
News Center
Careers
Manufacturing Sites

Intelligent Electrical Laboratory Center

Process Engineering Center

News

Blog

Please enter keywords to search

Global |EN

Choose your country & Language

Global English
Group
English
|
Chinese

Asia Pacific

Australia & New Zealand
English
India
English
Indonesia
English | Indonesian
Korea
Korean
Malaysia
English
Philippines
English
Singapore
English
Singapore (Sunlight)
English
Vietnam
English | Vietnamese

Middle East & Africa

CHINT-EGEMAC
English
Saudi Arabia
English
South Africa
English
UAE
English
CHINT AJLAN
English | Arabic

Europe

France
French
Kazakhstan
Russian
Netherlands
Dutch
Italy
Italian
Spain
Spanish
Turkey
Turkish
United Kingdom
English

North America

Mexico
Spanish

Latin America

Brazil
Portuguese
Colombia
Spanish
Ecuador
Spanish
Peru
Spanish
Home
Products
Solutions
Sustainability
Services
About Us
Main Menu
Home
Main Menu
Products
Low Voltage
Power Transmission and Distribution
Low Voltage Switchgear and Software
Instruments & Meters
EV Charging
Main Menu
Solutions
Power Utility
OEM
Telecom & Data Center
New Energy
Industry
Buildings
Main Menu
Sustainability
Main Menu
Services
Service Center
Download Center
Contact Us
Main Menu
About Us
About CHINT
News Center
Careers
Low Voltage
IEC
UL
Power Transmission and Distribution
Transmission
Distribution
Power Quality & Automation
Low Voltage Switchgear and Software
Main Distribution Board
Sub Distribution Board
Final Distribution Box
Software
Intelligent Solution
Core Parts
Instruments & Meters
Gas Meter
Electricity Meter
EV Charging
EV Charger
Power Utility
Transmission Grid
Distribution Grid
OEM
Generator Equipment
Modern Logistics Equipment
Pumps and Vacuum Equipment
Food and Beverage
Mining Machinery
HVAC
Elevator
Telecom & Data Center
Data Center
New Energy
Residential PV & ESS
Utility PV & ESS
Commercial and Industry PV
BESS
Industry
Metallurgical
Oil & Gas
Rail Transportation
Mining and Petrochemical
Buildings
Buildings
Service Center
Find a local subsidiary
Download Center
Product Documents
Solutions
Cases
Corporate Report
Contact Us
Contact Us

Call Us 400-117-7797
Email Us global-sales@chint.com
About CHINT
Manufacturing Sites
Intelligent Electrical Laboratory Center
Process Engineering Center
News Center
News
Blog
Careers
IEC
Main Power Distribution Sub Power Distribution Final Power Distribution Industrial Control
UL
Main Power Distribution(UL) Sub Power Distribution(UL) Final Power Distribution(UL) Industrial Control(UL)
Transmission Grid
Substation Mobile Substations
Distribution Grid
Micro-Grid Solution Intelligent Power Distribution Solutions
Generator Equipment
Generator Control System Solution Generator Dual Power Supply Control System Solution Diesel Generator
Modern Logistics Equipment
Conveyor Control Box Solution Control Box Solution for Telescopic Conveyor Lifts
Pumps and Vacuum Equipment
Water Supply Control System Solution Sewage Control System Solution Fire Pump Control System Solution
Food and Beverage
Food and Beverage Control System Solution
Mining Machinery
Sand and Gravel Production Line Electrical Control System Solution
Data Center
Containerised Solution Fusion Module Solution
Residential PV & ESS
Residential Solar Power Solution
BESS
Utility Scale Power Storage Solution C&I Storage Solution
Metallurgical
High, Medium, and Low Voltage Digital Distribution Solution Intelligent Motor Control Center Solution
Oil & Gas
Refining Production Power Distribution and DCS Control System Solution Oilfield Extraction Power Distribution Solution Integrated Electrical Control and Instrumentation Solution for Oil and Petrochemical Industries
Mining and Petrochemical
Power Transmission and Distribution Low Voltage Intelligent Distribution Low Voltage Control and Protection Low Voltage Distribution and Control Low Voltage Motor Control Low Voltage Reactive Power Compensation
Buildings
Main Distribution System Solution Secondary Distribution System Solution Final Distribution System Solution Capacitor Cabinet Solution Elevator Control Solution Emergency Lighting Solution Fan Control Solution Meter Box Solution Pump Room Solution SVG Capacitor Solution

Choose your country & Language

Global English
Group
English
|
Chinese
Australia & New Zealand
English
India
English
Indonesia
English | Indonesian
Korea
Korean
Malaysia
English
Philippines
English
Singapore
English
Singapore (Sunlight)
English
Vietnam
English | Vietnamese
CHINT-EGEMAC
English
Saudi Arabia
English
South Africa
English
UAE
English
CHINT AJLAN
English | Arabic
France
French
Kazakhstan
Russian
Netherlands
Dutch
Italy
Italian
Spain
Spanish
Turkey
Turkish
United Kingdom
English
Mexico
Spanish
Brazil
Portuguese
Colombia
Spanish
Ecuador
Spanish
Peru
Spanish

Please enter keywords to search

Your search term contains restricted words. Please use different keywords.
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
Product Consultation
Low Voltage IEC Final Power Distribution NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
Clear all
Final Power Distribution
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

NB3LEG-40 Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)

 Selection

Rated residual operating current I∆n≤ 30 mA: additional protection in the case of direct contact.

Tripping class AC class – Tripping is ensured for sinusoidal, alternating currents, whether they be quickly applied or slowly increase.

Contact Us

Product Information

Name
Size
Release time
Operate
NB3LEG-RCBO-Catalog.pdf
343.09KB
2025-08-01
Download
Name
Size
Release time
Operate
2012-NB3LEG-32-RCBO-Manual.pdf
239KB
2024-09-23
Download
Name
Size
Release time
Operate
2106-NB3LEG-40-RCBO-UKCA-EMC Certificate.pdf
362.31KB
2024-09-23
Download
2104-NB3LEG-40-RCBO-SEMKO Certificate.pdf
373.32KB
2024-09-23
Download
2104-NB3LEG-40-RCBO-SAA Certificate.pdf
125.3KB
2024-09-23
Download
2104-NB3LEG-40-RCBO-CB Certificate.pdf
249.64KB
2024-09-23
Download

Related Products

NB2LE-40ZT Smart Residual Current Operated Circuit Breaker with Over-current Protection (Electronic) NB2LE-40ZT Smart Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
View Details Documents
Documents
View all documents
NB4LE Residual Current Operated Circuit Breaker (Electronic) NB4LE Residual Current Operated Circuit Breaker (Electronic)
View Details Documents
Documents
View all documents
NB3L-40 Residual Current Operated Circuit Breaker with over-current protection (Magnetic) NB3L-40 Residual Current Operated Circuit Breaker with over-current protection (Magnetic)
View Details Documents
Documents
View all documents
NB2LE Residual Current Operated Circuit Breaker NB2LE Residual Current Operated Circuit Breaker
View Details Documents
Documents
View all documents
NB1L Residual Current Operated Circuit Breaker with Over-current Protection(Magnetic) NB1L Residual Current Operated Circuit Breaker with Over-current Protection(Magnetic)
View Details Documents
Documents
View all documents
NB310L(3PN) Residual Current Operated Circuit Breaker with over-current protection (Magnetic) NB310L(3PN) Residual Current Operated Circuit Breaker with over-current protection (Magnetic)
View Details Documents
Documents
View all documents
NB2LE-80ZT Residual current action circuit breaker with Overcurrent Protection (Electronic) NB2LE-80ZT Residual current action circuit breaker with Overcurrent Protection (Electronic)
View Details Documents
Documents
View all documents
NB3LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic) NB3LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
View Details Documents
Documents
View all documents
NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection(Electronic) NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection(Electronic)
View Details Documents
Documents
View all documents
NB8LE-63M Residual Current Operated Circuit Breaker with over-current protection (Electronic) NB8LE-63M Residual Current Operated Circuit Breaker with over-current protection (Electronic)
View Details Documents
Documents
View all documents
NBH8LE Residual Current Operated Circuit Breaker with over-current protection (Electronic) NBH8LE Residual Current Operated Circuit Breaker with over-current protection (Electronic)
View Details Documents
Documents
View all documents
NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic) NXBL-40Y Residual Current Operated Circuit Breaker with over-current protection (Magnetic)
View Details Documents
Documents
View all documents
NXBLE-63 Residual Current Operated Circuit Breaker (RCBO) NXBLE-63 Residual Current Operated Circuit Breaker (RCBO)
View Details Documents
Documents
View all documents
NXBLE-32 Residual Current Operated Circuit Breaker (RCBO) NXBLE-32 Residual Current Operated Circuit Breaker (RCBO)
View Details Documents
Documents
View all documents
NXBLE-63Y Residual Current Operated Circuit Breaker (RCBO) NXBLE-63Y Residual Current Operated Circuit Breaker (RCBO)
View Details Documents
Documents
View all documents
NXBLE-40 Residual Current Operated Circuit Breaker (RCBO) NXBLE-40 Residual Current Operated Circuit Breaker (RCBO)
View Details Documents
Documents
View all documents
NXBLE-125G Residual Current Operated Circuit Breaker (RCBO) NXBLE-125G Residual Current Operated Circuit Breaker (RCBO)
View Details Documents
Documents
View all documents
NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic) NB5LE Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
View Details Documents
Documents
View all documents
NB1L-20 Residual Current Circuit Breaker(ELM) NB1L-20 Residual Current Circuit Breaker(ELM)
View Details Documents
Documents
View all documents
Recommend Blogs
MCCB Frame Sizes Explained: Choosing the Right Circuit Breaker for Industrial Loads
AUGUST 22, 2025 MCCB Frame Sizes Explained: Choosing the Right Circuit Breaker for Industrial Loads

Circuit breakers are important in any electrical system. Learn about MCCB frame sizes to select the correct circuit breaker for industrial loads.

Customized Electrical Components with Better Adaptability, Better Meet Customer Needs
AUGUST 14, 2025 Customized Electrical Components with Better Adaptability, Better Meet Customer Needs

CHINT offers customized OEM electrical solutions with global compliance, fast delivery, and superior adaptability for HVAC, DG, and elevator applications.

From Certification to Application: How CHINT MCCB Supports OEM Success Stories
AUGUST 11, 2025 From Certification to Application: How CHINT MCCB Supports OEM Success Stories

CHINT M1 MCCB: UL489-certified, high-capacity, versatile breaker powering OEM success in HVAC, solar, industrial & more.

Slim RCBO Solutions for Power Distribution: CHINT NB1L-20 for Compact, Compliant Installations
AUGUST 1, 2025 Slim RCBO Solutions for Power Distribution: CHINT NB1L-20 for Compact, Compliant Installations

CHINT’s NB1L-20 is a great addition to any power distribution system. Learn why you should consider our product if you value safety and compliance.

Why UL Certification is Non-Negotiable for OEMs & Renewable Energy Projects
JULY 14, 2025 Why UL Certification is Non-Negotiable for OEMs & Renewable Energy Projects

UL Certification Requirements for OEMs: Essential Guide for Renewable Energy Projects in 2025

Configuration Guide: Setting Up the CHINT SMG-WSR and SMG-ESR Open Protocol Gateway
JULY 10, 2025 Configuration Guide: Setting Up the CHINT SMG-WSR and SMG-ESR Open Protocol Gateway

Step-by-step protocol gateway setup guide for CHINT SMG-WSR and SMG-ESR, covering wiring, network configuration, and MQTT cloud connection.

A Guide to the CHINT SMG Open Protocol Gateway: Building Flexible IoT Solutions
JULY 2, 2025 A Guide to the CHINT SMG Open Protocol Gateway: Building Flexible IoT Solutions

Discover how CHINT’s SMG-WSR/SMG-ESR Gateway and NB2 Circuit Breakers create smart, efficient, and remote-controlled electrical systems for various industries.

An Introduction to Power Circuit Breakers: How Do They Protect Your Industrial and Commercial Facilities?
JULY 1, 2025 An Introduction to Power Circuit Breakers: How Do They Protect Your Industrial and Commercial Facilities?

Explore CHINT’s power circuit breaker solutions for high-performance electrical protection in industrial, commercial, and healthcare environments.

Understanding the VFD Working Principle in Industrial Automation
JULY 1, 2025 Understanding the VFD Working Principle in Industrial Automation

Learn the working principle of VFDs and discover how CHINT NVF7 boosts performance, energy savings, and equipment longevity in industrial automation.

Gas Insulated Switchgear in Renewable Energy Integration
JUNE 30, 2025 Gas Insulated Switchgear in Renewable Energy Integration

Learn how CHINT’s gas-insulated switchgear ensures stable, safe, and compact power distribution in renewable energy projects like wind and solar farms.

Need Support From Us?

Blog
Blog

Find expert perspectives on the trends and technologies driving your business.

View Now
Download Center
Download Center

Download new and previously released documents including product document, solutions, cases, coporate report.

View Now
Contact Us
Contact Us

Reach out to us to receive more information, technical support, assistance with complaints and more.

Get Support
Collapsed
Expand
Products
Low Voltage
Power Transmission and Distribution
Low Voltage Switchgear and Software
Instruments Meters
EV Charging
Solutions
Transmission Grid
Distribution Grid
Buildings
Generator Equipment
Pumps and Vacuum Equipment
Mining Machinery
HVAC
Elevator
Data Center
Residential PV & ESS
Utility PV & ESS
Commercial and Industry PV
Metallurgical
Oil & Gas
Rail Transportation
Mining and Petrochemical
About Us
About CHINT Global
News Center
Blog
Career
CHINT Privacy Policy
Case Center
Services
Download Center
Contact Us
Get latest updates from CHINT
logo
Phone 86-400-1177797
Mailbox global-sales@chint.com
Follow us
snsLogo snsLogo snsLogo
ZHEJIANG ICP RECORD NO. 12033679 Copyright 2025 CHINT Group. All Rights Reserved