It breaks fault currents up to 15 kA per EN 60898 and 20 kA per IEC 60947-2, with a DC rating of 15 kA per the same standard. At 40 A on a 4-pole frame, this is a main or heavy feeder breaker in a distribution board, not a final-subcircuit device.
Where it lands in a panel
IP20 with conductors connected, so it lives inside an enclosure or distribution board, not exposed. The combined terminals top and bottom (box lug + clamp) accept a range of conductor sizes without needing separate accessories.
Construction and environmental range
Halogen-free and silicon-free construction — no outgassing that corrodes contacts in sealed enclosures. Operating temperature range -40 °C to 75 °C, with humidity derating above 55 °C (95% RH to 55 °C, 55% to 70 °C, 35% to 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. The neutral pole is switched (3P+N), so it breaks the neutral along with the phases — this matters for TN-S or TT systems where neutral isolation is required for maintenance safety.