The Siemens 5SU1354-6KV06 is a combined residual-current circuit breaker with overcurrent protection (RCBO) in a single 1+N-pole module. It integrates Type A residual-current detection at 30 mA with a B-curve thermal-magnetic trip rated at 6 A, all in a 70 mm wide housing. The 10 kA breaking capacity at the rated voltage covers the majority of residential and light commercial distribution boards where the prospective short-circuit current stays under that threshold.
What the ratings mean for fit
Type A detection means it responds to sinusoidal AC fault currents and pulsating DC fault currents up to 6 mA smooth DC — the standard requirement for circuits feeding single-phase rectified loads like washing machines, LED drivers, and IT equipment. The 30 mA sensitivity is the common touch-leakage threshold for personal protection in IEC 60364-compliant installations. B-curve 6 A means the magnetic trip activates at 3 to 5 times rated current (18–30 A), suited for resistive and light inductive loads where inrush is modest — think lighting circuits, general-purpose socket outlets, and small control transformers. The 10 kA rated short-circuit capacity (Icn) matches the typical service-entrance fault level in a TN or TT system with a 10 kA prospective rating; if your upstream breaker is rated higher, coordination needs a check.