The 100 mA residual sensitivity (Type AC) catches sinusoidal AC earth faults; it's the right choice for general-purpose circuits without non-sinusoidal or pulsating DC fault profiles. Type AC is the most common and economical, but if your load includes VFDs, UPS systems, or switched-mode power supplies that generate smooth DC or pulsed waveforms, you'd want a Type A or F device instead — this one won't trip on those fault shapes. Pollution degree 2 (non-conductive, occasional condensation) is typical for enclosed panels in climate-controlled or moderately humid environments.
The 70 mm installation depth matches standard SENTRON RCBO footprints, so it fits existing distribution board cutouts without rework. IP20 with conductors connected, so it's for enclosed panels only, not for wet or washdown areas.