The Siemens 5SU9336-7CR10 is a current-production RCBO — a combined residual-current circuit breaker with overcurrent protection in one DIN-rail module. It's rated 10 A with a C-trip characteristic, 30 mA Type A residual sensitivity, and a 6 kA short-circuit breaking capacity at 230 V AC single-phase. That 30 mA Type A rating means it catches pulsating DC fault currents from electronics (VFDs, switched-mode supplies) that a plain AC type would miss — so it's the right call for modern panel loads where harmonics are in the mix.
What the ratings mean on the panel
The C-curve (C-Char) trips between 5 and 10 times rated current — 50 to 100 A for this 10 A unit — which handles motor inrush and transformer magnetising peaks without nuisance tripping. The 30 mA residual threshold is the standard for personal shock protection in final circuits (IEC 60364). Type A covers both sinusoidal AC and pulsating DC faults up to 6 mA smooth DC superimposed, so it's fine on single-phase drives and LED drivers. The 6 kA Icn is the rated short-circuit capacity at the declared voltage — enough for most domestic and light commercial distribution boards where the prospective fault current stays under that level.