The Siemens SENTRON 5SM3616-6BA is a 2-pole residual current operated circuit breaker (RCCB) rated 63 A at 230 V AC, 50 Hz, with a 300 mA Type A tripping residual current. The 300 mA threshold suits it for general distribution or submain protection where a higher trip level avoids nuisance tripping from normal equipment leakage.
Panel fit and wiring constraints
Mounts on DIN rail (REG) in any position — no derating for horizontal or upside-down installation. Terminals accept solid or stranded copper from 1.5 mm² up to 25 mm²; tighten to 2.5–3 N·m. IP20 with connected conductors — protected against finger contact once the distribution board is closed, but not against dripping water.