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AFDD-1 Arc Fault Detection Device | Fire Protection with RCBO Function
Arc-fault detection device (AFDD) with integrated overcurrent and residual current protection.
Rated current range: 6A–40A, residual current type A, tripping curve B/C.
Complies with EN62606 & EN61009-1, short-circuit capacity 6kA.
Overview
The AFDD-1 Arc Fault Detection Device integrates arc-fault detection (AFDD),
overcurrent protection (MCB) and residual current protection (RCCB, Type A) in one compact 1P+N module.
It complies with EN62606 and EN61009-1, providing early detection of series/parallel arc faults
and fast disconnection to reduce fire risks in residential, commercial and industrial installations.
Features
- Triple protection: AFDD + MCB + RCCB(Type A)
- Rated short-circuit capacity: 6 kA; tripping curves: B/C
- LED indication for device status & tripping reason; continuous self-monitoring
- Compact 1P+N (1 module) design, screw terminals top/bottom
- Strain-relief clamps, snap-in slider; easy mounting on 35 mm DIN rail
- Mechanical endurance ≥ 20,000 cycles; Electrical endurance ≥ 4,000 cycles
Technical Data
| Series | AFDD |
|---|---|
| Model | AFDD-1 |
| Poles | 1P+N (1 Module) |
| Rated current (AC) | 6A, 10A, 13A, 16A, 20A, 25A, 32A, 40A |
| Residual current type | Type A |
| Rated residual current IΔn | 10 mA, 30 mA |
| Min./Max. test circuit voltage | 196 V / 253 V |
| Tripping characteristic | B, C |
| Operating frequency | 50 Hz |
| Impulse withstand voltage (Uimp) | 4 kV |
| Rated voltage (AC) | 240 V |
| Rated short-circuit current (Icn) | 6 kA |
| Surge current strength | 0.25 kA |
| Max. total switching capacity | 6 kA |
| Rated insulation voltage | 250 V |
| Heat loss per pole | 3 W |
| Short-circuit backup fuse (SCPD) | 100 A (gG) |
| Overvoltage class | III |
| Terminals | Screw-type, top & bottom (load circuit) |
| Neutral conductor position | Left / Right |
| Max. connection cable length | 70 m (DB to outer socket) |
| Clamping area | 1–25 mm² |
| Tightening torque | 2.0–2.4 Nm |
| Mechanical endurance | ≥ 20,000 cycles |
| Electrical endurance | ≥ 4,000 cycles |
| Storage / Operating temperature | -35℃…+60℃ / -25℃…+40℃ |
| Housing type / material | Distribution board housing / Thermoplastic |
| Mounting | DIN rail (35 mm) |
| Protection class | IP20 (installed: IP40) |
| Standards | EN62606, EN61009-1 |
| Power limitation category | 3 |
| Pollution degree (EN60664) | 2 |
| Certifications | UKCA, CE |
Applications
Fire protection for final circuits up to 40 A in residential, commercial and public buildings
(bedrooms, offices, hospitals, schools). Suitable for TN-S and TN-C-S networks.
Not suitable for TN-C systems or circuits with smooth DC residual currents not equal to 50 Hz.
Certifications
- UKCA
- CE
- Standards: EN62606 (AFDD), EN61009-1 (RCBO)
FAQ
What is the difference between AFDD and RCCB?
AFDD detects series/parallel arc faults to prevent fires; RCCB trips on residual (leakage) current. AFDD-1 integrates AFDD + MCB + RCCB in one device.
Can AFDD-1 be used in TN-C systems?
No. AFDD-1 is intended for TN-S and TN-C-S networks.
Which leakage types are detected?
Type A: sinusoidal AC and pulsating DC residual currents.
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