AFDD+MCB combination for arc-fault and overcurrent protection
It protects a 230 V AC, 50 Hz final circuit at 10 A with a B tripping characteristic, and interrupts fault currents up to 6 kA per EN 60898-1 and IEC 60947-2. The 1P+N design switches the line and monitors the neutral; the compact unit occupies a single modular width on DIN rail (REG), installable in any mounting position.
The 18 mm width (one modular unit) and 68.5 mm depth (70 mm installation depth) let it slot into a standard DIN-rail enclosure without crowding adjacent breakers or RCBOs. The arc-fault detection arm (AFDD) monitors for series arcs (2–10 A) and parallel arcs (50–500 A) and opens the circuit within the device's response window — a failure mode that a standard MCB alone cannot detect.