It detects both series arcs (down to 2 A, up to 20 A) and parallel arcs (50 A to 500 A) — the series arc range is what catches a loose terminal or a frayed conductor that doesn't draw enough current to trip a standard MCB but still generates enough heat to start a fire. The 6 kA breaking capacity (verified to both IEC 60947-2 and EN 60898-1) handles the fault current a 230 V AC residential or commercial supply can deliver at the panel. Rated operational voltage is 230 V AC, 50 Hz.
Mounts on DIN rail (REG) in any position — no orientation restriction. At 18 mm wide (one modular unit per DIN 43880), it occupies the same slot as a standard single-pole MCB, so it drops into existing consumer units or distribution boards without re-spacing. Depth is 68.5 mm, installation depth 70 mm; height 90 mm.
The compact design (1 MW unit per the description) integrates the AFDD and MCB functions into a single housing, saving a DIN slot compared to separate devices.