It protects a final subcircuit against overload, short-circuit (thermal-magnetic trip, C-curve, magnetic tripping limit 5...10 x In), and earth leakage at 30 mA sensitivity, all in one 36 mm wide DIN-rail package.
Rated 16 A (In) with a C-curve — so it holds up to 16 A continuous load and trips magnetically between 5 and 10 times that (80–160 A) for short-circuit protection. Breaking capacity is 4.5 kA Icn at 230 V AC, 50/60 Hz, per EN/IEC 61009-2-1. Earth-leakage protection is integrated at 30 mA sensitivity — that is the standard threshold for personal protection against indirect contact (touch voltage) per IEC 60364. It covers the same circuit as the overcurrent protection, so no separate RCCB module needed.
Neutral is on the left, phase on the right — wire it accordingly. Tunnel terminals accept 1...16 mm² rigid or 1...10 mm² flexible; strip 14 mm, torque to 2 N.m. IP20 rated (finger-safe terminals), IP40 in a modular enclosure. Pollution degree 3, overvoltage category III — suitable for fixed installations inside a distribution board.