The 6 kA breaking capacity per EN 60898 is the maximum fault current it can safely interrupt at rated voltage; for this 1-pole unit the rated operational voltage is 250 V AC single-phase, 400 V AC multi-phase (line-to-line). At 6 A, the power loss is 0.86 W per pole in hot operating state — negligible for thermal derating in a crowded enclosure. The 10 000 mechanical operating cycles typical service life is standard for an MCB in this class; it is not a switching device for frequent load making/breaking.
Mounts on a DIN rail, any position. One modular width unit (18 mm) — slot-efficient for a single-pole branch. IP20 with connected conductors, so it is for enclosed panels only, not washdown areas. Sealable design allows lockout/tagout.