It breaks fault currents up to 10 kA per EN 60898, and 5 kA per UL 1077 / CSA C22.2 No. 235 — enough for most secondary distribution boards in mechanical engineering and industrial environments.
The 1 A rating at 40 °C derates to 0.94 A at 40 °C, 0.91 A at 45 °C, 0.88 A at 50 °C, and 0.84 A at 55 °C — so if your panel ambient runs hot, you need to account for that drop or the breaker may nuisance-trip on sustained load. The C-curve (tripping characteristic C) means magnetic trip occurs at 5–10 times rated current, which handles the start-up draw of small motors and transformers without tripping, but still clears hard shorts fast.
Touch protection is built in (finger-safe terminals when wired).