Its 16 A B-curve thermal-magnetic trip protects against overload and short-circuit, while the 30 mA Type A residual current element detects both sinusoidal AC faults and pulsating DC faults up to 30 mA. That Type A rating means it covers the majority of modern electronic loads — switching power supplies, VFDs, LED drivers — that generate pulsating DC leakage, where a plain Type AC device would miss the fault. The 2-pole configuration (1 protected pole plus switched neutral) is typical for single-phase final circuits where both line and neutral need isolation.
DIN-rail fit and temperature derating
Mounting position is unrestricted — horizontal, vertical, or flat — which simplifies panel layout in tight cabinets. At 40 °C it derates to 15.2 A, at 50 °C to 14.4 A, and at 70 °C to 12.8 A. That's a continuous-current derating curve of about 0.8 A per 10 °C above 30 °C — factor it in if the RCBO sits near heat sources or inside a densely packed enclosure.