It breaks 4.5 kA under EN 60898 and 6 kA under IEC 60947-2 — the higher figure is what matters for industrial panel SCCR calculations where the breaker is the first OCPD in a branch.
The 2-pole configuration switches both line conductors — no neutral switching here, so it's a straight double-pole overcurrent device for single-phase or two-leg protection. At 36 mm wide (2 width units on a 18 mm/module DIN rail), it fits standard distribution boards. Mounting position any, so it works in vertical or horizontal busbar arrangements without derating.