The Siemens 5SU1154-7KV13 is a combined residual-current and miniature circuit breaker (RCBO) — an FI/LS-protector Type A (PSE/SSF) — rated for 1+N-pole, C-curve 13 A, with a rated residual current IΔn of 10 mA and a breaking capacity of 10 kA.
The 10 mA residual sensitivity is the key spec for personnel protection — it trips well below the 30 mA threshold that could cause ventricular fibrillation, so this unit is sized for circuits where direct shock risk is high (socket outlets in bathrooms, construction-site distribution, or medical locations per IEC 60364).