It breaks fault currents up to 6 kA per IEC/EN 60898-1 and 15 kA per IEC 60947-2, with a matching 15 kA DC rating per IEC 60947-2 at up to 72 V DC. That dual rating means the same unit covers both residential-style distribution boards (60898-1) and industrial panel applications where higher fault current capability is needed (60947-2).
On a 16 A frame, expect magnetic trip above 80 A. The 4-pole design switches all four phases; the neutral is not switched separately, so the breaker opens -L2-L3-N together. That suits a 3-phase + N distribution circuit where you want all poles ganged. The DC side is rated for 60 V nominal, 72 V max. Enclosure protection is IP20 with conductors connected — typical for a panel-mounted MCB; the terminals are touch-safe when wired, but the breaker is not rated for wet or washdown zones.
This MCB is certified to IEC/EN 60898-1 and IEC/EN 60947-2, plus UL 1077 and CSA C22.2 No. 235. The UL 1077 rating is 5 kA — a supplementary protector classification, not a branch-circuit rated breaker per UL 489. For a panel built to North American code, that means it serves as a supplementary overcurrent device downstream of a UL 489 branch breaker. The IEC 60947-2 rating at 15 kA covers the industrial fault-current duty in European and global panels. Halogen-free and silicon-free construction reduces toxic smoke and corrosive outgassing in a fault event — a consideration for enclosed panels in occupied spaces or sensitive electronic environments.