The Siemens SENTRON 5SV6316-7KK20 is a compact AFDD-RCBO — an arc-fault detection device combined with a residual-current circuit breaker in a single 1-module-wide unit. It protects a 1P+N circuit at 230 V AC, 20 A rated current, with a 30 mA Type A residual-current trip and C-curve overcurrent characteristic, breaking capacity rated at 6 kA per IEC 60898-1 and IEC 60947-2.
Depth is 68.5 mm, installation depth 70 mm — enough clearance for a standard 70 mm deep enclosure with the conductors dressed behind. Any mounting position works; supply cord entry position is also unrestricted. Accepts supplementary add-on devices via the product extension interface. Spring-cage terminals accept 0.2–2.5 mm² solid or ferruled stranded; strip length 8 mm avoids whiskers under the cage.
Listed as current production. This is a standard catalogue item from the SENTRON family, not a phase-out line. No LTB windows or successor cross-references apply.
C-curve tripping characteristic (magnetic release at 5–10× In) suits mixed resistive-inductive loads like lighting, socket outlets, and small appliances — not motor starting. Power loss per pole is 2.65 W at rated current — factor that into thermal derating if the enclosure is tightly packed.