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NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
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Low Voltage IEC Final Power Distribution NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
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NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)
NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)

NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic)

The NB4LE-AFD Arc Fault Detection Circuit-Breaker (AFDD) integrates arc fault detection, overload, short-circuit, and residual current protection into one compact device. Designed for AC 230/240V, 50Hz circuits and rated up to 32A, it effectively prevents electrical fires caused by arc faults while offering leakage and overload protection. With Type A residual current operation and B, C, BK, and CK tripping curves, this device ensures comprehensive protection for modern residential and commercial installations, enhancing system safety and reliability.

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Product Information

Name
Size
Release time
Operate
NB4LE-AFD-AFDD-Catalog.pdf
1.22MB
2025-12-10
Download
Name
Size
Release time
Operate
2109-NB4LE-AFDD-Manual.pdf
767.49KB
2024-09-22
Download
Name
Size
Release time
Operate
2206-NB4LE-AFD-AFDD EAC-Certificate.pdf
610.61KB
2024-09-22
Download
2201-NB4LE-AFD-AFDD-CE RoHS UKCA Certificate.pdf
2.31MB
2024-09-22
Download
2112-NB4LE-AFD-AFDD-CB Certificate.pdf
620.94KB
2024-09-22
Download
Name
Size
Release time
Operate
NB4LE-AFDD-Drawing-3.dxf
1.2MB
2024-09-22
Download
NB4LE-AFDD-Drawing-2.stp
2024-09-22
Download
NB4LE-AFDD-Drawing-4.stp
2024-09-22
Download
NB4LE-AFDD-Drawing-1.dxf
2024-09-22
Download

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FAQs

 

What is the primary function of the NB4LE-AFD?

The NB4LE-AFD combines arc fault detection, overload, short-circuit, and residual current protection in a single device to prevent electrical fires and ensure system reliability.

 

In which applications is the NB4LE-AFD most suitable?

It is ideal for residential, commercial, and public buildings where fire prevention and personal protection are critical, such as apartments, hospitals, and offices.

 

How does the device indicate a fault condition?

The built-in LED indicator shows real-time status: blue for normal, red flashing for residual current fault, and alternating red/blue for arc fault.

 

What standards does the NB4LE-AFD comply with?

It meets international safety standards IEC/EN61009-1 and IEC/EN62606, ensuring consistent performance and compatibility in global electrical systems.

 

How does arc fault detection enhance safety compared to standard RCBOs?

While RCBOs detect current leakage and overload, the NB4LE-AFD also detects arc faults, identifying dangerous sparking caused by damaged wiring or loose connections before they can cause fires.

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