The Schneider Electric A9Z11480 is an Acti9 iID residual current circuit breaker (RCCB) — 4 poles, rated 80 A, with 30 mA earth-leakage sensitivity. The 30 mA trip threshold covers personnel protection (indirect contact) per EN/IEC 61008-1. For circuits with variable-speed drives or electronics, you'd want a Type A or Type B instead.
Rated breaking and making capacity is Idm 1500 A / Im 1500 A — that's the short-circuit current the RCCB can safely interrupt at its rated voltage. Surge current withstand is 250 A (8/20 µs waveform), so it handles lightning-induced surges on the line side without nuisance tripping. Electrical durability is 10,000 cycles under AC-1 (resistive load); mechanical durability is 20,000 cycles. That's a solid service life for a panel RCCB — not a daily-switched device, but fine for protection duty.
Clip-on DIN rail mount, 8 x 9 mm pitches wide (72 mm). Neutral is on the left. Terminals accept double front or back entry: rigid up to 35 mm² front, 25 mm² back. Wire stripping length is 14 mm.