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NJBK1
Product Consultation
Low Voltage IEC Industrial Control NJBK1
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Industrial Control
NJBK1
NJBK1

NJBK1

The CHINT NJBK1 Series Motor Protection Relay provides reliable protection against overload, phase loss, and current imbalance for AC motors. Designed for AC 50Hz systems up to 690V and rated currents from 1A to 400A, it ensures continuous or intermittent motor operation safety. With LED display, adjustable current settings, and integrated fault memory, NJBK1 offers precision protection for industrial, building, and automation motor control systems.

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Product Information

Name
Size
Release time
Operate
NJBK1-MOTOR-PROTECTOR-Catalog.pdf
515.31KB
2025-12-18
Download
Name
Size
Release time
Operate
2111-NJBK1-Motor Protector-Manual.pdf
1.77MB
2025-03-13
Download

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FAQs

 

What is the main function of the NJBK1 Motor Protection Relay?

It protects three-phase AC motors from overload, phase loss, and unbalanced current, preventing damage and extending motor life.

 

What motor capacities can it handle?

The NJBK1 series covers 0.5 kW to 200 kW motors, making it suitable for light to heavy-duty industrial equipment.

 

How is the current and trip class set?

Through a rotary knob, allowing quick adjustment of current range (1–400 A) and tripping characteristics (Class 5–30) based on application needs.

 

Does it include a visual indication of faults?

Yes. The LED display shows current readings, fault codes, and setting parameters for easy diagnostics.

 

What mounting options are available?

The NJBK1 can be mounted on a 35 mm DIN rail or fixed directly to a panel, offering flexibility for different installation setups.

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