It's designed for AC supply voltages between 24 and 125 V at 50 Hz, and it's instantaneous — no intentional delay, so it clears ground faults as fast as the waveform allows. That 30 mA sensitivity covers personnel protection (hand-to-ground fault path) in circuits where the supply voltage is below the usual 230/400 V range, which is the main reason you'd reach for this specific variant over a standard 230 V RCCB.
Depth is 70 mm, height 90 mm — standard SENTRON RCCB footprint, so it drops into any existing SENTRON sub-distribution board without re-drilling the backplate.
Fault ratings and coordination
Short-circuit current rating is 10 kA per IEC 61008-1, with a series fuse maximum permissible of 63 A upstream. The 0.5 kA rated value per IEC 61008-1 is the conditional short-circuit current with the specified series fuse; the 10 kA figure is the rated short-circuit capacity without an external fuse. For selectivity, pair it with a 63 A gG fuse or a 63 A MCB upstream and you get full discrimination up to that level.