Siemens 5SU1354-7KK06 — SENTRON RCBO, 6 A C-curve
The Siemens 5SU1354-7KK06 is a SENTRON RCBO (residual current operated circuit breaker with integral overcurrent protection) in a 1P+N, 2-pole design.
At 6 A it protects a 1.3–1.4 kW resistive load at 230 V, or a motor load derated for starting current. The 10 kA SCCR per EN 60898 is the standard for final circuits in residential and commercial panels; the 35 kA per IEC 60947-2 applies when the device is used as a distribution breaker in an industrial switchboard — the higher figure is the one a panel builder coordinates with upstream fuses or an MCCB. Temperature derating is baked in: at 40 °C it carries 5.7 A, at 50 °C it's 5.4 A, and at 70 °C it drops to 4.62 A. If the panel runs hot — adjacent to a drive or transformer — size up or check the thermal curve.
Two modular-width units (36 mm) snap onto DIN rail in any orientation. Depth is 77 mm, installation depth 70 mm.
This is a current-production part. The SENTRON RCBO family is a core Siemens catalog line with broad distribution.