What it is and what it does
The Siemens SENTRON 5SV4616-0 is a 2-pole residual current circuit breaker (RCCB), Type AC, rated 63 A with a 300 mA trip sensitivity. It operates on a 230/400 V AC supply at 50 Hz and carries a 10 kA short-circuit current rating (SCCR) per IEC 61008-1 — meaning it safely interrupts fault currents up to that level without upstream damage. The instantaneous design (no short-time delay) trips as soon as the residual current exceeds 300 mA, which is the standard choice for general-purpose shock protection in residential and light commercial panels.
Panel integration and mounting
Snaps onto a DIN rail (REG) and occupies 2 modular width units (36 mm) with a 70 mm installation depth. The 60 mm grid spacing matches standard distribution board cutouts. Mounting position is unrestricted — any orientation works. IP20 rating applies when installed in a distribution board with conductors connected, so it's intended for enclosed panel use, not open washdown areas. Silicon-free construction suits environments where silicone outgassing can contaminate contacts or coatings.