The Siemens 5SU1356-7KV13 is a combined residual-current device and miniature circuit breaker (RCBO) — an FI/LS protector — in a Type A, 1+N-pole configuration. Rated IΔn 30 mA and breaking capacity 6 kA, with a C-trip curve at 13 A. The 70 mm width fits standard DIN-rail distribution boards.
What the ratings mean for fit
Type A detection covers pulsating DC residual currents and smooth AC — the usual requirement for circuits with single-phase rectifiers, washing machines, LED drivers, and similar electronics. The 30 mA trip threshold provides personal protection against direct contact; it's the standard for socket-outlet circuits in residential and commercial final subcircuits per IEC 60364. The 6 kA breaking capacity (IEC 60898-1) is sufficient for most domestic and light commercial installations where the prospective short-circuit current at the board is below that level. The C-curve (13 A) means the magnetic trip operates at 5–10× In, so it tolerates inrush from motor loads like pumps or compressors without nuisance tripping.