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
Malaysia
English
Philippines
English
Singapore
English
Vietnam
English | Vietnamese

Middle East & Africa

Saudi Arabia
English
South Africa
English
UAE
English
Egypt
English | Arabic
Kenya
English

Europe

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

North America

Mexico
Spanish
USA
English
Canada
English | French

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
Malaysia
English
Philippines
English
Singapore
English
Vietnam
English | Vietnamese
Saudi Arabia
English
South Africa
English
UAE
English
Egypt
English | Arabic
Kenya
English
France
French
Kazakhstan
Russian
Netherlands
Dutch
Italy
Italian
Spain
Spanish
Turkey
Turkish
United Kingdom
English
Mexico
Spanish
USA
English
Canada
English | French
Brazil
Portuguese
Colombia
Spanish
Ecuador
Spanish
Peru
Spanish

Please enter keywords to search

Your search term contains restricted words. Please use different keywords.
NJBK2 Motor Protection Relay
Product Consultation
Low Voltage IEC Industrial Control NJBK2 Motor Protection Relay
Clear all
Industrial Control
NJBK2 Motor Protection Relay
NJBK2 Motor Protection Relay

NJBK2 Motor Protection Relay

The CHINT NJBK2 Motor Protection Relay is designed for intelligent protection of AC motors in industrial and commercial applications. It protects motors against overload, phase loss, blocking, unbalanced current, grounding faults, and overtemperature (PTC). With a digital dial, LED display, and wide current range of 1A to 800A, it ensures precise and reliable control. Compliant with IEC 60947-4-1, the NJBK2 provides a dependable motor protection solution for continuous or intermittent operations.

Contact Us

Product Information

Name
Size
Release time
Operate
NJBK2-Motor Protective Controller-Catalog.pdf
459.5KB
2024-09-19
Download
Name
Size
Release time
Operate
2211-NJBK2-Motor Protector-Manual.pdf
2.71MB
2025-03-13
Download

Related Products

NJBK7 Motor Protection Relay NJBK7 Motor Protection Relay
View Details Documents
Documents
View all documents
NJBK6 Motor Protection Relay NJBK6 Motor Protection Relay
View Details Documents
Documents
View all documents
JD-5E Integrated Motor Protector JD-5E Integrated Motor Protector
View Details Documents
Documents
View all documents
JD-8 Integrated Motor Protector JD-8 Integrated Motor Protector
View Details Documents
Documents
View all documents
JD-5 Integrated Protector JD-5 Integrated Protector
View Details Documents
Documents
View all documents
NJBK1 NJBK1
View Details Documents
Documents
View all documents
NJBK10 Motor Protection Relay NJBK10 Motor Protection Relay
View Details Documents
Documents
View all documents
Recommend Blogs
How Surge Protective Devices (SPDs) Keep Your Small Business Equipment Safe
MARCH 10, 2026 How Surge Protective Devices (SPDs) Keep Your Small Business Equipment Safe

Learn how surge protection and electrical protection strategies support small business power needs, reduce downtime, and keep equipment reliable as demand grows.

Maintaining Electrical Safety Across Distributed Infrastructure
MARCH 9, 2026 Maintaining Electrical Safety Across Distributed Infrastructure

Learn how smart maintenance strategies protect electrical safety across distributed facilities, reducing downtime and keeping multi-site operations predictable and reliable.

How Automated Distribution Systems Improve Network Stability
MARCH 8, 2026 How Automated Distribution Systems Improve Network Stability

Grid automation allows for better management of distribution systems and your network. See how automated distribution systems improve outage management.

Why Certification Matters in High-Voltage Equipment
MARCH 7, 2026 Why Certification Matters in High-Voltage Equipment

Learn why IEC standards and electrical safety certification matter for high-voltage equipment, improving reliability, protection accuracy, and risk control across power networks.

Ensuring Continuous Power Supply in Critical Infrastructure Like Airports
MARCH 6, 2026 Ensuring Continuous Power Supply in Critical Infrastructure Like Airports

Ensure reliable airport power with robust critical power systems and layered resilience. Explore how redundancy, monitoring, and design keep aviation operations running smoothly.

Designing with IEC 61439-Compliant Switchgear for Better LV Assembly Performance
FEBRUARY 14, 2026 Designing with IEC 61439-Compliant Switchgear for Better LV Assembly Performance

Designing an IEC switchboard is necessary for every operation, whether industrial or commercial. Acquiring IEC 61439 design verification for MDBs is important.

Selecting the Right Control Components for High-Inrush Loads
FEBRUARY 12, 2026 Selecting the Right Control Components for High-Inrush Loads

Learn how to choose the proper control components like MCCB, overload relay, and contactors used in high inrush load for motor protection.

How Smart Meters Help Optimize Building Energy Use
FEBRUARY 12, 2026 How Smart Meters Help Optimize Building Energy Use

Great building energy management makes use of smart meters to gauge energy consumption. Learn why smart metering is a sign of good energy monitoring practice.

Using SCADA Integration to Improve Power Quality
FEBRUARY 3, 2026 Using SCADA Integration to Improve Power Quality

Learn how SCADA integration transforms power quality management in industrial facilities using intelligent controllers, metering systems, and remote monitoring.

How Integrated Power Systems Improve Reliability in Industrial Operations
FEBRUARY 2, 2026 How Integrated Power Systems Improve Reliability in Industrial Operations

Learn how integrated power systems with power transformers, MV switchgears, and MCCBs help industrial operations by improving reliability and reducing downtime.

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

FAQs

 

What protections does the NJBK2 Motor Protection Relay offer?

It safeguards motors from overload, phase loss, unbalance, grounding faults, blocked rotor, and overtemperature (PTC) conditions.

 

How is the NJBK2 configured?

The device uses a digital dial and LED/Nixie display for precise current and protection setting, making it easy to calibrate.

 

What reset options are available?

It supports manual, remote manual, and automatic resets, with adjustable reset times between 4 and 12 minutes.

 

Can NJBK2 be used in continuous operation environments?

Yes. It is rated for 8-hour or continuous duty, ensuring stability for heavy-duty applications.

 

What types of installations are supported?

It supports guide-rail mounting and panel installation, suitable for both standalone and integrated control panel use.

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 2026 CHINT Group. All Rights Reserved