Supply can enter from either top or bottom, and the RCBO is rated for 230/240 V AC at 50 Hz, with an insulation voltage (Ui) of 264 V and a surge voltage resistance of 4 000 V — suitable for overvoltage category III environments with pollution degree 2.
Derating and ambient temperature
Above that, the device derates linearly: 18.8 A at 40 °C, 18.2 A at 45 °C, 17.4 A at 50 °C, 16.2 A at 55 °C and 60 °C, 15.4 A at 65 °C, and 14.6 A at 70 °C. If the panel runs warm — common in crowded enclosures or near heat sources — size the upstream protection accordingly.
Physical fit and compliance
Energy limitation class 3 means the let-through energy is low, reducing stress on downstream wiring and components during a fault.