It protects a three-phase outgoing circuit against overload, short-circuit (thermal-magnetic trip, B curve, 3–5× In magnetic threshold), and earth leakage at 30 mA sensitivity.
The 6 A rated current (In) is the continuous load the device carries without tripping — size the upstream conductor and load to stay under this. The 30 mA earth-leakage threshold provides personnel protection per IEC 60364 — it trips on any ground fault above that level. The 3P+N poles description means it switches all three phases and the neutral, with the neutral on the left side of the module.
The module occupies 10 x 9 mm pitches — 90 mm width total, with 18 mm between phases and 9 mm between phase and neutral. The tunnel-type terminals accept 0.75–16 mm² rigid or 0.33–10 mm² flexible wire; strip 15 mm and torque to 2 N·m. IP20 on the device body, IP40 inside a modular enclosure — keep the panel door closed during operation.