What this RCBO does in the panel
The Siemens 5SU1454-1KK32 is a 2-pole (1P+N) SENTRON RCBO — a combined residual-current device and miniature circuit breaker in one 36 mm-wide, 2-module-width package. It protects a 32 A final subcircuit on 230/240 V AC, 50 Hz, with a C-curve trip characteristic and a 100 mA type AC residual-current trip.
Mounting position any — no derating needed for horizontal or inverted orientation. IP20 with connected conductors in a distribution board; keep it inside a closed enclosure. Rated for -40 °C to 75 °C ambient, halogen-free and silicon-free construction, so it suits food-processing or clean-room panels where outgassing is a concern. Neutral conductor is switched internally (1P+N).