Combined arc-fault and residual-current protection in one 18 mm package
It integrates two protective functions that normally occupy separate modules: a 16 A, C-curve MCB for overcurrent and short-circuit, plus a 30 mA Type A RCD for earth leakage, all topped with an arc-fault detector that trips on series and parallel arcs. The unit snaps onto DIN rail (REG) and is rated 6 kA breaking capacity per both EN 60898-1 and IEC 60947-2, so it covers residential and light commercial panelboards where those standards apply.
The 16 A rated operational current with C-curve tripping means this unit handles moderate inrush loads — think lighting banks, small motor circuits, or general socket outlets — without nuisance trips on startup. The 30 mA residual-current trip is Type A, so it detects pulsating DC fault currents from rectified loads like switched-mode power supplies or VFDs, not just pure sine-wave AC leakage. That matters in modern panels where electronics are common. The arc-fault detection covers both series arcs (2 A to 16 A minimum/maximum) and parallel arcs (50 A to 500 A), which is the full range a loose connection or damaged cable can produce.
Mounting and environment — DIN rail, any position, wide temperature range
Installation depth is 70 mm; the unit itself is 68.5 mm deep and 90 mm tall. The IP20 rating is typical for enclosed panel gear — the protection is complete once the panel door is closed and conductors are connected.