The Siemens SENTRON 5SV3647-7 is a 4-pole residual-current circuit breaker (RCCB) rated for 80 A at 50 Hz, with a 300 mA tripping threshold and Type F characteristic — meaning it detects smooth DC residual currents up to 10 mA superimposed on AC waveforms, common in VFD-fed motor circuits and single-phase rectifier loads. Its selective (time-delayed) design allows it to coordinate with downstream RCCBs: under a fault, the downstream unit trips first, keeping the upstream supply alive for the rest of the panel — critical for process lines where a single ground fault shouldn't drop the whole cabinet. Rated short-circuit withstand is 10 kA per IEC 61008-1, with a conditional rating of 0.8 kA per EN 60898 — the higher figure governs installation behind a suitable upstream overcurrent device; the lower figure applies when used as stand-alone protection without a series MCB.
Depth is 70 mm, matching the standard 70 mm installation depth for flush-mount distribution boards; the IP20 rating applies only when the board is closed and conductors are connected — not for open-panel use. Silicon-free construction matters for automotive or paint-shop environments where silicone outgassing can cause adhesion failures on downstream coatings.
Rated 80 A at 40 °C ambient; derate continuously above that: 77.57 A at 45 °C, 74.59 A at 50 °C, 70.22 A at 55 °C, 64.47 A at 60 °C, 57.35 A at 65 °C, and 48.8 A at 70 °C — so a panel running at 55 °C loses nearly 12 % of the headline current.
Listed as current-production — no end-of-life notice on record.