Siemens 5SU9346-7CN06 RCBO, 6 kA, 1P+N, Type A, 30 mA, C-6 A

The Siemens 5SU9346-7CN06 is a combined residual current device and miniature circuit breaker — an RCBO — in a single 1P+N module. It breaks at 6 kA (Icn), protects against residual currents down to 30 mA with a Type A characteristic, and the C-curve thermal-magnetic trip handles 6 A rated current on a 230 V AC supply. The Type A designation means it catches pulsating DC fault currents, not just sinusoidal AC — relevant for modern electronics and VFD-fed loads where half-wave rectification can blind a standard AC-only RCD.