It protects a single-phase final subcircuit against overload, short-circuit, and earth leakage in one package, saving a DIN rail position compared to separate RCD and MCB.
Depth is 77 mm, installation depth 70 mm — check gland-plate clearance if the enclosure is shallow. Degree of pollution 2, overvoltage category III — rated for fixed-installation distribution boards where transient overvoltages are controlled by upstream SPDs. IP20 with the distribution board installed and conductors connected; not for wet or washdown environments.