The breaking capacity of 10,000 A Icn at 240 V AC (50/60 Hz) per EN/IEC 60898-1 tells you the breaker can safely interrupt a fault current up to 10 kA without welding or failing; this is the standard domestic and light commercial level for most panelboards. The 1-pole (1P) configuration protects a single phase. The IP20 rating means it is touch-safe but not sealed against moisture — suitable for indoor panel installation only. The pollution degree 2 rating confirms it is intended for normal, non-conductive environments (typical control cabinet).
The 18 mm width (2 modules) means it occupies two 9 mm pitch positions in a distribution board — plan your rail fill accordingly.
