The 6 kA breaking capacity (Icn) at 230 V AC per IEC 60898-1 tells you it can safely interrupt a fault current up to 6,000 A without welding its contacts or cascading damage upstream. Thermal-magnetic trip technology gives you two protection layers: the thermal bimetal handles sustained overloads (e.g., a 45 A draw on a 40 A circuit), while the magnetic solenoid reacts instantly to short-circuit currents. The 40 A rating and 1-pole format suit single-phase branch circuits feeding a 9.2 kW resistive load at 230 V.
Approvals include IEC 60898-1 compliance, which covers the standard for MCBs used in household and similar installations. The part carries a suitability-for-isolation marking per that standard, meaning you can safely use it as a disconnect under load — the contact position indicator confirms open/closed state visually. Pollution degree 2 rating suits normal indoor environments;
The tunnel-type terminals accept 1–25 mm² flexible or 1–35 mm² rigid copper, with a tightening torque of 3.5 N·m. That covers most branch-circuit conductors up to a 40 A load. Depth is 66.5 mm, height 81 mm, width 18 mm — fits in a standard 2-module slot. The grey (RAL 7035) housing matches the Easy9 family aesthetic for a clean panel layout.