The Siemens SENTRON 5SU1354-6KK06 is a 1P+N RCBO (residual current circuit breaker with overcurrent protection) rated 6 A at 30 °C with a B tripping characteristic. It breaks fault currents up to 10 kA per EN 60898 and 35 kA per IEC 60947-2, covering the typical domestic and light commercial panel requirements. The 2-module-width (36 mm) body fits standard DIN-rail enclosures; supply can enter from top or bottom, and mounting position is unrestricted.
What the ratings mean for fit
The 6 A rating is at 30 °C ambient. At 40 °C it derates to 5.7 A, at 50 °C to 5.4 A, and at 70 °C to 4.62 A — so in a warm enclosure the actual continuous current capacity drops. The B curve (3–5× In magnetic trip) is standard for resistive and general-purpose loads where inrush is moderate; for motor or transformer circuits a C or D curve would be needed. The 10 kA breaking capacity under EN 60898 is the domestic standard; the 35 kA under IEC 60947-2 gives headroom for industrial distribution where fault levels are higher. The rated insulation voltage is 264 V and the surge voltage resistance is 4 000 V, consistent with overvoltage category III and pollution degree 2 — typical for fixed-installation switchgear.
Panel integration
The 36 mm width (2 modular units) and 77 mm depth fit standard DIN-rail enclosures; installation depth is 70 mm. The IP20 rating applies once the distribution board is installed with connected conductors — so the device itself is not sealed against dust or moisture ingress before panel mounting. Supply can be connected from top or bottom, and the RCBO can be mounted in any position, which simplifies wiring in tight enclosures.