Rated parameters and breaking capacity
Rated at 40 A at 30 °C with a rated voltage of 230/240 V AC at 50 Hz, it provides overcurrent and earth-fault protection in a single module. The breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2 — the higher IEC figure matters when the device is installed in an industrial distribution board where fault levels may exceed the domestic 10 kA threshold. Supply can enter from either top or bottom, and the mounting position is unrestricted. IP20 applies only when the distribution board is installed with conductors connected.
Thermal derating and environmental range
Rated current is 40 A at 30 °C, derating to 29.2 A at 70 °C. The full derating curve is documented: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, 32.4 A at 55 °C and 60 °C, and 30.8 A at 65 °C. For a panel that sees elevated internal temperatures — typical in a crowded enclosure or near a heat source — use the 40 °C or 50 °C column to size the circuit, not the 30 °C headline figure.
Insulation voltage (Ui) is 264 V, surge voltage resistance is 4 000 V. The minimum test voltage is 195 V.