The ABB S801S-C80 is a 1-pole miniature circuit breaker from the S800S series, rated 80 A with a Trip Curve C characteristic.
The 50 kA interrupting rating at 230 VAC tells you it can safely interrupt a fault up to 50,000 A, which is high enough for most industrial panelboards and distribution boards without needing a current-limiting upstream device.
Panel integration note
Snap-on DIN rail mount, single-pole width. In a crowded enclosure, the 1-pole footprint saves rail space compared to multi-pole alternatives. The 80 A rating typically requires a larger cross-section supply conductor — verify terminal sizing against your wire gauge before termination.
