It carries a breaking capacity of 10 kA per EN 60898 and 15 kA per IEC 60947-2, meaning it can safely interrupt fault currents up to those levels in a 4P configuration.
Derating and thermal limits
The 50 A rating holds at 35 °C ambient. Above that, the breaker derates: 48 A at 40 °C, 47 A at 45 °C, 45.95 A at 50 °C, 44.9 A at 55 °C, and 43.8 A at 60 °C. The full operating range is -40 to 75 °C, so it handles cold starts in unheated plant rooms.
Installation depth is 70 mm; the overall depth including terminals is 76 mm. Mounting position is any — vertical, horizontal, upside-down — which helps when the panel layout is tight. IP20 with connected conductors; finger-safe terminals with touch protection are standard.