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NJYB3 Voltage Protection Relay
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NJYB3 Voltage Protection Relay

NJYB3 voltage protection relay is designed for three-phase AC circuits, offering protection against phase loss, phase sequence errors, voltage imbalance, overvoltage, undervoltage, and PTC temperature faults. NJYB3 ensures safe and reliable circuit operation and control in industrial applications.

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Product Information

Name
Size
Release time
Operate
NJYB3-VOLTAGE-PROTECTION-RELAY-Catalog.pdf
413.55KB
2025-12-18
Download
Name
Size
Release time
Operate
2111-NJYB3-Voltage Protection Relay-Manual.pdf
2.43MB
2024-11-04
Download
Name
Size
Release time
Operate
2404-NJYB3-Voltage Protection Relay-CB Certificate.pdf
822.54KB
2024-11-04
Download
2112-NJYB3-Voltage Protection Relay-EAC Certificate.pdf
905.21KB
2024-11-04
Download
2011-NJYB3-Voltage Protection Relay-CE Declaration Certificate.pdf
647.93KB
2024-11-04
Download
1702-NJYB3-Voltage Protection Relay-EMC Certificate.pdf
182.2KB
2024-11-04
Download
1702-NJYB3-Voltage Protection Relay-CE Certificate.pdf
195.9KB
2024-11-04
Download
Name
Size
Release time
Operate
NJYB3-Voltage Protection Relay-Drawing-3D.stp
14.27MB
2025-03-25
Download

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FAQs

 

What is the purpose of the NJYB3 Voltage Protection Relay?

It monitors system voltage and disconnects loads automatically when voltage levels exceed or fall below set thresholds, preventing equipment damage.

 

What voltage ranges does it cover?

The NJYB3 supports AC 220V and 380V systems with measurement ranges of 150–270V and 260–480V, respectively.

 

Can delay times be adjusted?

Yes, both operation and reset delay times can be adjusted from 0.1 to 10 seconds, allowing flexible protection response.

 

What type of contact output does it have?

It features one SPDT contact rated for AC 250V / 5A, suitable for control circuits and contactor interfaces.

 

Where is this relay typically used?

It is widely used in industrial power panels, motor protection systems, and automatic control circuits where voltage stability is critical.

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