It breaks faults up to 10 kA at 415 V AC (50/60 Hz), conforming to EN/IEC 60947-2. The L (thermal) element handles overload protection; the I (magnetic) element handles short-circuit protection — a fixed, non-interchangeable LI curve. Rated operational voltage is 415 V AC; rated insulation voltage is 440 V AC. Pollution degree 3 (IEC 60664-1) suits it for industrial environments where conductive contamination may occur.
If your panel runs hotter, derate per the manufacturer's curve — the -20 to 55 °C operating range is the survival envelope, not the full-current band. That is the SCCR you can apply downstream equipment against. Electrical durability is 8000 cycles at rated current and voltage; mechanical durability is 30,000 cycles. For distribution duty where the breaker operates infrequently, that is more than adequate. Power dissipation per pole is 18.7 W — three poles total about 56 W of heat inside the enclosure, so factor that into your thermal rise calculation.
Fixed-mount, backplate installation. Connection pitch is 25 mm. Dimensions: 75 mm wide, 130 mm high, 60 mm deep.