40 A B-curve RCBO for final-circuit protection
For motor or transformer circuits with higher inrush, a C or D curve would be the correct choice. Rated current is 40 A at 30 °C ambient, with a published derating table: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, 32.4 A at 55 °C, 32.4 A at 60 °C, 30.8 A at 65 °C, and 29.2 A at 70 °C. If the distribution board sits in a warm machine cabinet or near heat sources, use the derated value for continuous load sizing — the 40 A label applies only at 30 °C ambient.
Installation depth is 70 mm — verify enclosure depth against the back wall clearance, especially in shallow consumer units. Spring-cage terminals? The spec does not state terminal type, but the wire range is generous for a 40 A device — expect tunnel or screw terminals rated for the full cross-section.
Designed to EN 60898 (rated breaking capacity 6 kA), overvoltage category III, energy limiting class 3. The product designation follows DIN EN 61346-2 and DIN EN 81346-2 (function code F). For pulsed DC or smooth DC fault currents, an A or B type RCD would be required. The manufacturer's standard compliance documentation (RoHS, REACH, CE) applies; specific declarations are available on request.