It is rated 80 A continuous at 400…415 V AC 50/60 Hz, with a 30 mA sensitivity that covers the standard personnel-protection threshold (IEC 61008-1). The 4-pole (4P) version switches all live conductors; neutral is on the left.
The 80 A [In] is the continuous current the RCCB carries without tripping — sized for a main incomer or sub-feed on a 3-phase 400 V distribution board. The 30 mA earth-leakage sensitivity is the trip threshold for direct-contact protection; it catches a fault current that low, which is the standard for general-purpose socket-outlet circuits and personnel protection per IEC 61008-1. Rated breaking capacity is Idm 1500 A / Im 1500 A — the maximum fault current the RCCB can safely interrupt. The 250 A surge current rating (8/20 µs impulse) means it withstands lightning-induced transients without nuisance tripping.
The 4-pole module occupies 8 x 9 mm pitches — 72 mm total width — which is the standard 4-module footprint for a 4P RCCB in the Acti9 range. IP20 finger-safe terminals; IP40 when enclosed in a modular enclosure. Terminals accept up to 35 mm² rigid or 25 mm² flexible cable, with a stripping length of 14 mm and a tightening torque of 3.5 N·m.