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NJBK5 Motor Protection Controller
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NJBK5 Motor Protection Controller
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NJBK5 Motor Protection Controller
NJBK5 Motor Protection Controller

NJBK5 Motor Protection Controller

The NJBK5 Motor Protection Controllers are designed for AC 50Hz circuits with rated voltage 380V and control power up to 11kW (22A). They provide overload and phase failure protection and support automatic liquid level control in civil water systems, excluding oil, corrosive, and explosive liquids.

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Product Information

Name
Size
Release time
Operate
NJBK5-Control Relays-Catalog.pdf
276.97KB
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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