The description breaks down as Type AC (sensitive to sinusoidal AC residual currents only), a tripping residual current IΔn of 10 mA, a short-circuit breaking capacity of 6 kA, and a B-curve thermal-magnetic trip at 25 A. The D=70 mm dimension refers to the depth behind the panel face, which matters when fitting into a shallow enclosure or alongside other devices on the DIN rail.
The 1+N-pole format occupies one module width, so it fits alongside single-pole MCBs in a shared enclosure. The 10 mA sensitivity is lower than the typical 30 mA for general socket-outlet protection — that's intentional for circuits where a lower touch-current threshold is specified (medical IT rooms, wet areas, or equipment requiring enhanced fault protection). The B-curve at 25 A means the magnetic trip operates between 3× and 5× In (75–125 A), suited for resistive or lightly inductive loads where inrush is modest.