The Siemens 5SV6316-7KP20 is a SENTRON AFDD-RCBO combination — an arc-fault detection device and residual-current circuit breaker in one 18 mm-wide, 1P+N compact unit.
The 30 mA Type A RCD detects sinusoidal AC and pulsating DC residual currents, covering the majority of modern electronic loads. The arc-fault detection (AFDD) identifies series and parallel arcs: rated for series arcs from 2 A to 20 A and parallel arcs from 50 A to 500 A, which covers the range where a loose connection or damaged cable could otherwise cause a fire before the overcurrent or RCD element clears it.
Snaps onto DIN rail (REG) and occupies one modular width (18 mm). Depth is 68.5 mm; installation depth allowance is 70 mm, so it fits standard 70 mm-deep distribution boards without the door clashing.
