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Scope of application

Arc Fault Circuit Breaker (AFCI Breaker) is the latest Arc Fault Detection Device. Its main function is to detect and identify dangerous earthing arc faults, parallel arc faults and series arc faults, and to drive the device operation that cut off current timely to avoid electrical fires. When arc fault occurs, due to the low current intensity, lower than setting values of overcurrent protection which are installed in power system, especially widely in low-voltage distribution field, installing AFCI circuit breaker in the distribution line terminal can promptly find the arc and cut off the circuit, effectively reduce the damage caused by the arc.
Fault arc circuit breaker is an Arc Fault Protection Devices, integrated design of MCB and RCCB, which can detect and identify faulted arcs and normal operating arcs in the circuit. Prevent the fire hazard caused by the arcing faults such as poor contact and bad insulation in the electric circuit. Set Arc Fault Detection Device, overload protection, short circuit protection, overvoltage protection, surge suppression, leakage protection into one.

Main Technical Parameters

Rated Current6A,10A,16A,20A,25A,32A,40A,50A,63A
Rated Voltage UeAC230V/AC400V
Rated Residual Operating Current
Rated Breaking Capacity4500A
Rated Impulse Withstand Voltage(1.2/50)Uimp4kV
Dielectric Test Voltage At And Ind . Freq . For 1min2kV
Protection ClassIP20
Thermo - Magnetic Release CharacteristicC-Curve (5-10In)
Electrical Life8000
Mechanical Life20000
Installation35MM DIN Rail Mount or M3 Screw Side Mount
Reference Temperature For Setting Of Thermal Element30℃
Ambient Temperature-5~+40℃
Terminal Connection TypePhillips Screws
Adapter Cable6-63A 1-10mm² 16-7AWG 
Tightening Torque3.0N.M
Combination With Accessories Auxillary Contact
Auxillary ContactYes
Alarm ContactYes
Shunt ReleaseYes
Under Voltage ReleaseYes

Tripping Characteristic Curve -- C Type

Temperature compensation

When the ambient temperature is not a benchmark of 30 degrees , the reference correction factor is as folows .

Ambient Temperature-20℃-10℃0℃10℃20℃30℃40℃50℃60℃
Current Correction Coefficient1.


Rated Current Minimum Adapter Copper Wire
6A 1 MM² / 17AWG
10A 1.5 MM² / 16AWG
16A 1.5 MM² / 16AWG
25A 2.5 MM² / 13AWG
32A 4 MM² / 11AWG
40A 6 MM² / 10AWG
50A 10 MM² / 7AWG
63A 10 MM² / 7AWG

Mounting Method

1. Installed With 35MM Guide Rails.
2. Install With 3*25MM Screws On The Side
3. Install With Circuit Breaker Box.

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