This series of intelligent arc fault detection devices (AFDD) represents advanced low-voltage circuit protection technology. By integrating miniature circuit breaker (MCB), residual current leakage protection (RCD), and state-of-the-art micro-controller based arc fault detection (AFDD) capabilities, these devices offer complete and comprehensive safety for modern residential, commercial, and industrial power networks.
Product Highlights
- Intelligent Arc Fault Detection: Constantly analyzes circuit characteristics to identify hazardous micro-arcs (serial, parallel, and earth fault arcs) while distinguishing them from normal switching arcs of motors, domestic appliances, and power tools.
- All-In-One Protection: Provides advanced, continuous defense against electrical fires (AFDD), short circuits, system overloads, earth leakages (RCD), and dangerous system overvoltages.
- Modular 1P+N Design: Features a compact form-factor requiring minimal DIN rail space, allowing easy panel integration and straightforward retrofitting of branch distribution boards.
- Certified Standards: Fully compliant with international standards including IEC 62606, IEC 60947-2, with CCC and CE certifications ensuring high manufacturing and safety standards.
Model Configurations
The series consists of three optimized models designed to meet various load specifications and safety levels:
- AFDD-32: Combines MCB and arc fault detection modules to provide protection against short-circuit, overload, and arc faults. Supports rated current options from 6A to 32A in 1P+N configuration.
- AFDD-40: Heavy-duty protection model combining MCB and arc fault detection modules with integrated overvoltage protection. Handles currents from 6A up to 40A.
- AFDD3-40: Premium all-in-one safety model incorporating MCB, RCD, overvoltage, and arc fault detection modules. Provides comprehensive defense against short-circuit, overload, leakage current, and arc fault hazards up to 40A.
Model Features Comparison
| Feature |
AFDD-32 |
AFDD-40 |
AFDD3-40 |
| Arc Fault Protection |
Yes |
Yes |
Yes |
| Overload & Short-Circuit |
Yes |
Yes |
Yes |
| Overvoltage Protection |
No |
Yes (AC 275V ± 5V) |
Yes (AC 275V ± 5V) |
| Leakage Current Protection (RCD) |
No |
No |
Yes (30mA) |
| Rated Current Options (In) |
6A, 10A, 16A, 20A, 25A, 32A |
6A, 10A, 16A, 20A, 25A, 32A, 40A |
6A, 10A, 16A, 20A, 25A, 32A, 40A |
Technical Parameters
1. Main Specifications
| Parameter |
AFDD-32 |
AFDD-40 |
AFDD3-40 |
| Rated Operational Voltage (Ue) |
AC 230V |
| Rated Frequency |
50Hz ± 2% |
| Rated Insulation Voltage (Ui) |
400V |
| Rated Impulse Withstand Voltage (Uimp) |
4kV |
| Number of Poles |
1P+N (N pole disconnectable) |
| Magnetic Tripping Type |
B-type, C-type |
| Rated Service Short Circuit Capacity (Ics) |
6kA |
| Leakage Action Current (RCD) |
— |
— |
30mA (Zero-sequence transformer) |
| Leakage Action Time |
— |
— |
≤ 0.1s |
| Overvoltage Action Value |
— |
AC 275V ± 5V |
AC 275V ± 5V |
Frequently Asked Questions
- What is the AFDD Series?
The AFDD (Arc Fault Detection Device) series is an intelligent electrical protection range designed to identify and isolate dangerous arc faults in household and commercial branch circuits, effectively preventing electrical fires before they start.
- How does the AFDD module differentiate between safe and hazardous arcs?
The built-in arc fault module uses a micro-controller to analyze current and voltage waveforms in real-time. It filters out normal operating arcs generated by motor starters, light switches, and power tools, only tripping when a continuous, irregular fault arc (characteristic of damaged wiring or loose contacts) is detected.
- What are the main differences between the AFDD-32, AFDD-40, and AFDD3-40 models?
The AFDD-32 integrates standard MCB overload/short-circuit protection with arc fault detection up to 32A. The AFDD-40 handles currents up to 40A and adds overvoltage protection. The AFDD3-40 is the most comprehensive safety model, integrating MCB, overvoltage protection, arc fault detection, and a residual leakage current device (RCD) in a single modular unit.
- Which standards do these devices comply with?
These devices fully comply with global low-voltage protection standards, including IEC 62606 (for AFDDs), IEC 60947-2, and have CCC and CE quality and safety certifications.
- Can these devices be used to replace standard circuit breakers?
Yes, these units can serve as standard branch breakers on standard DIN rails. By integrating MCB, RCD, and AFDD functions, they provide far superior protection compared to traditional thermal-magnetic circuit breakers.
