What this RCBO covers
It combines a 32 A thermal-magnetic overcurrent trip (C-curve) with a 30 mA type A residual-current detection block in a single 3-module-width (54 mm) package. The 30 mA residual sensitivity covers basic shock protection for personnel.
The 1 kA surge-current withstand (8/20 μs waveform) is the impulse-sparkover rating; it means the device survives typical lightning-induced transients without nuisance tripping or internal damage.
Panel fit and environment
Dimensions are 90 mm high, 54 mm wide (3 modular units), 77 mm deep, with a 70 mm installation depth. That 77 mm depth is the body-only; the 70 mm installation depth is what matters for enclosure selection — it fits standard 80 mm-deep distribution boards. IP20 rating applies only with the distribution board installed and conductors connected — not a standalone IP rating for open-panel use.