The Siemens 5SU1354-6KV16 is a combined residual-current circuit breaker and miniature circuit breaker (RCBO) — an FI/LS protector — in a Type A, 1+N-pole configuration. It carries a rated residual current (IΔn) of 30 mA, a short-circuit breaking capacity of 10 kA, and a B-curve overcurrent trip at 16 A.
The 70 mm depth (D=70MM) fits standard DIN-rail enclosures; the 1+N-pole format occupies a single module width. Type A detection covers pulsating DC residual currents up to 10 mA superimposed on AC — relevant for loads with half-wave rectification (washing machines, LED drivers, some VFDs).
The B-curve characteristic (3–5 In) is sized for resistive and general-purpose loads with low inrush — lighting circuits, small appliances, control transformers. At 16 A rated current, it covers a typical 3.5 kW single-phase load at 230 VAC. The 10 kA breaking capacity meets the domestic and light commercial SCCR requirement for most European TN and TT systems.