The Siemens 5SU1653-0KV13 is a residual current operated circuit breaker with integral overcurrent protection (RCBO), combining 30 mA Type AC earth-fault sensitivity and a 13 A B-curve thermal-magnetic trip in a 1+N-pole, 4.5 kA interrupting-rated package. The B-curve characteristic (3–5× In magnetic release) suits resistive and general-purpose loads where inrush is modest — think lighting circuits, socket outlets, or small control transformers in distribution boards.
Ratings and what they mean for panel fit
The 30 mA trip threshold (IΔn) is the standard for personnel protection in residential and light commercial final circuits per IEC 60364 — it clears earth faults before they reach a let-go current. The Type AC designation means it detects sinusoidal AC residual currents only; if the installation contains pulsed DC or variable-speed drive leakage, a Type A or Type F device is required instead. The 4.5 kA breaking capacity (IEC 60898-1) is adequate for domestic and small commercial board fault levels; in industrial sub-distribution with higher prospective short-circuit current, a device with a higher kA rating would be needed. The 1+N-pole form factor switches the phase and breaks the neutral but does not isolate it — the neutral pole opens with the phase but lacks overcurrent protection.