The Siemens SENTRON 5SU1354-0LB10 is a 1P+N RCBO (residual current circuit breaker with overcurrent protection) rated 10 A with a B tripping characteristic and a 10 kA breaking capacity per EN 60898. It occupies 2 width units (36 mm) on a DIN rail and accepts conductors from 0.75 to 35 mm² solid or stranded. The rated current derates with ambient temperature: 10 A at 30 °C, 9.5 A at 40 °C, down to 7.7 A at 70 °C — so for a panel running at 40 °C ambient, size the load to 9.5 A continuous, not the 10 A label.
Panel Fit & Installation
Supply can enter from the top or bottom. The IP20 rating applies only when the distribution board is installed with connected conductors — it is not a standalone IP20 component. Halogen-free and silicon-free construction suits environments where outgassing or contamination matters.