What this RCBO carries
The Siemens 5SU9353-7CR06 is a combined residual-current circuit breaker with overcurrent protection (RCBO) in a 1P+N format, rated 6 A with C-trip characteristic and 30 mA Type A residual sensitivity. Breaking capacity is 4.5 kA at 230 V AC. The Type A detection means it catches pulsating DC fault currents from half-wave rectified loads — common in modern switched-mode power supplies, LED drivers, and single-phase drives — not just pure sinusoidal AC leakage.
Panel fit and deployment
Snap-on DIN rail mount, 1 module width (18 mm). Occupies one slot in a consumer unit or distribution board. The 6 A C-curve protects lighting circuits, small fan coils, and control transformers up to that rating; the 30 mA RCD side covers personnel protection for the same final circuit. Single-pole switched, neutral solid — no neutral disconnect.