The Siemens SENTRON 5SV4414-0 is a 2-pole residual current circuit breaker (RCCB) rated at 40 A with a 100 mA trip threshold, Type AC, for 230/400 V AC 50 Hz systems. It carries a 10 kA short-circuit current rating (SCCR) per IEC 61008-1 and mounts on a DIN rail (REG) — two modular width units wide, so it occupies 36 mm on the rail. The 100 mA trip suits circuits where a higher threshold is needed to avoid nuisance tripping from leakage in equipment with filters or long cable runs, while still providing earth-fault protection.
Thermal derating and panel fit
The 40 A rating holds at 40 °C ambient; at 45 °C it derates to 38.1 A, and at 55 °C to 32.29 A. At 70 °C the continuous current drops to 17.6 A. The RCCB is rated for any mounting position and accepts top or bottom supply feed. Depth is 70 mm — standard for a 2-MW SENTRON RCCB — so it clears a 100 mm deep enclosure without issue. IP20 protection applies once the distribution board is installed with conductors connected; the housing is silicone-free.