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NJBK5 Motor Controller
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Low Voltage IEC Industrial Control NJBK5 Motor Controller
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Industrial Control
NJBK5 Motor Controller
NJBK5 Motor Controller

NJBK5 Motor Controller

The CHINT NJBK5 Motor Controller is a versatile and reliable motor protection relay designed to control and safeguard AC motors in circuits up to 380 V and 22 A. It provides overload and phase-failure protection, ensuring stable motor operation and preventing damage. Available with or without a liquid level relay, the NJBK5 series also supports automatic pump control in water towers and reservoirs. Built to IEC/EN 60947-4-1 standards, it is ideal for water pumps, compressors, and industrial automation systems. 

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Product Information

Name
Size
Release time
Operate
NJBK5-Control Relays-Catalog.pdf
277.39KB
2025-03-13
Download
Name
Size
Release time
Operate
2111-NJBK5-Motor Protective Controller-Manual.pdf
2.21MB
2025-03-13
Download
2111-NJBK5-5-Motor Protective Controller-Manual.pdf
2MB
2025-03-13
Download
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FAQs

 

What is the main function of the NJBK5 Motor Controller?

The NJBK5 controls motor start/stop functions and protects against overload and phase failure, ensuring safe and reliable motor operation.

 

Does it support automatic water level control?

Yes. Models equipped with a liquid level relay (NJBK5-10) can automatically control water pumps for filling or draining reservoirs.

 

What current and voltage ranges are available?

It covers 0.72–25 A current settings and operates at AC 220 V or 380 V, suitable for motors up to 11 kW.

 

What protection features does it include?

It provides thermal overload and phase-loss protection, automatically disconnecting the motor when faults occur.

 

How does it differ from standard relays?

Unlike conventional relays, the NJBK5 integrates motor control and protection into one device, reducing wiring complexity and panel space.

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