The Siemens 5SV3617-6 is a 2-pole instantaneous RCCB from the SENTRON family, rated 80 A with a 300 mA type A residual operating current for 230/400 V AC 50 Hz systems.
The 70 mm depth matches standard distribution board clearances, and the 60 mm grid spacing aligns with typical modular panel layouts. Top or bottom supply feed is allowed, and supplementary devices can be installed on the product extension.
The 80 A rating governs continuous load capacity — sized for main incomer or heavy sub-feed duty on a 230/400 V three-phase system. The 300 mA type A residual detects pulsating DC fault currents (common from rectifiers, VFDs, and electronic loads) as well as sinusoidal AC, so it fits mixed-load panels where standard AC-type RCCBs might not trip. Being instantaneous (no short-time delay), it provides fast disconnection for personnel protection but must be coordinated with downstream selectivity if used as a main switch.