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20 Amp Arc Fault Breaker

AFDD (Arc Fault Detection Devices) is an advanced electrical fire protection device designed to prevent fires caused by arc faults, short circuits, wire aging, overloads, poor contacts, or electrical equipment failures. Equipped with a built-in computer chip, it real-time monitors and analyzes arc pulses, triggering a trip signal to cut off power when hazardous arcs are detected. Ideal for residential, commercial, and industrial settings, it provides multi-layered protection including residual current, overload, short circuit, and arc fault (series, parallel, ground) protection.

Core Features

Multi-Protection Functions:

Arc fault detection (series, parallel, ground arcs)
Residual current protection (IΔn = 0.03A)
Overload (long/short delay) and instantaneous trip protection.

4 Working Modes (Adjustable via concealed Setting Button):

1 flash: Interference-resistant mode (low sensitivity, for high-interference environments like industrial machinery).
2 flashes: Strict mode (general factories, complex power systems).
3 flashes: Normal mode (residential, offices, dormitories).
4 flashes: Sensitive mode (long lines with minimal grid interference).

User-Friendly Design:

Reset Button: Manual reset after arc interruption.
Indicator Lights: Green (normal operation), Red (fault alarm, flashing post-trip).
Test Button: Short-press to simulate arc trips for functionality checks.

Technical Specifications

  • Rated Voltage: 230V~
  • Rated Current (In): 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
  • Poles: 2P+N, 2P
  • Short Circuit Capacity: 6000A
  • Operating Temperature: -25°C ~ +40°C
  • Protection Degree: IP20
  • Mechanical/Electrical Life: 20,000 / 10,000 operations
 
 

Technical data

Item Parameter Data
 

 

 

 

 

 

Electricalfeatures

 Rated voltage Ue （V） 230V~
Rated current In (A) 6A,10A,16A,20A,25A, 32A,40A,50A,63A
Rated sensitivity I ∆ n(A) 0.03A
Poles 2P+N、2P
Wave form of the earth leakage sensed AC
Thermo-magnetic release characteristic C（5-10In）
Rated short circuit capacity Icn (A) 6000
Rated residual making and breaking capacity  I ∆ m (A) 500A(In ≤ 50A),630A(In ≤ 63A)
Rated insulation voltage Ui (V) 500V
Rated impulse withstand voltage Uimp (V) 4000V
Pollution degree 2
 

Mechanicalfeatures

 Electrical life 10000
Mechanical life 20000
Protection degree IP20
Ambient temperature (℃ ) -25~+40
Storage temperature  (℃ ) -25~+70
Installation Tightening torque (N.m) 2
Terminal size for cable (mm) 16
Installation category Ⅱ

Product features

AFDD-63 series Arc Fault Detection Devices includes residual current protection, fault arc protection, overload and short circuit protection. The residual current tripping characteristics of AFDD are shown in Table 2 below.

Technical data

Model In(A) I ∆ n Time limit for tripping or not tripping
I ∆ n 2I ∆ n 5I ∆ n  
AFDD-63

6A,10A,16A,  20A,25A,32A, 40A,50A,63A,

 >0.03 0.03 0.15   Maximumtripping time
0.03 0.03 0.15  
<0.03 0.03 0.15 0.04
The arc fault protection function of AFDD mainly includes the arc fault protection detection unit, the unit detects and identifies fault arcs in the line and send stripping signals, tripping release takes off the operation mechanism of the product and makes the main contact of AFDD-63 from closed position to open position, thus disconnecting the fault line and effectively avoiding the fire caused by the arc fault.The time limit for tripping of AFDD-63 with rated voltage 230V are shown in Table 3 and Table 4.

Limit value for tripping of AFDD under small arc current below 63A

Arc current of test（the effective value） 3A 6A 13A 20A 40A 63A
Maximum tripping time 1s 0.5s 0.25s 0.15s 0.12s 0.12s
Limit value for tripping of AFDD under large arc current above 63A
Arc current of test（the effective value） 75A 100A 150A 200A 300A 500A
N 12 10 8 8 8 8
Over current protection characteristics (reference temperature 30℃ )
Type In(A) Tripping time Expected result
B,C,D 1.13In t ≤ 1h(In ≤ 63A) Not tripping
1.13In t ≤ 2h(In>63A)
B,C,D 1.45In t<1h(In ≤ 63A) Tripping
1.45In t<2h(In>63A)
B,C,D 2.55In 1s<t<60s(In ≤ 32A) Tripping
2.55In 1s<t<120s(In>32A)
Type In(A) Tripping time Expected result
B,C,D B t ≤ 0.1s Not tripping
C t ≤ 0.1s
B,C,D D t ≤ 0.1s
B t<0.1s Tripping
B,C,D C t<0.1s
D t<0.1s

Overall and mounting dimensions(mm)

Fault analysis

Fault Analysis and Troubleshooting of AFDD Arc Fault Protection Device can be found in Table 6.
Fault cause Fault analysis Troubleshooting

Table 6
Refusal to operate The AFDD circuit breakeris not connected to the

neutral wire, causing

refusal to operate

 The AFDD circuit breaker is onlyconnected to the phase wire on the

power side and the neutral wire is

not connected.

 Connect the neutral wire on the powerside.
False tripping The AFDD circuit breaker  trips due to a short circuit The line (L) and neutral (N) wiresat the incoming and outgoing

terminals of the AFDD circuit breaker

are crossed

 Strictly follow the wiring diagram andthe product markings to correctly

connect the circuit.
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