The Siemens 5SU1356-7GV06 is a SENTRON RCBO — a combined residual-current circuit breaker with overcurrent protection — in a Type A, 30 mA sensitivity, C6 curve configuration. It occupies 2 modular width units (36 mm) on a DIN rail and is rated for 230/240 V AC at 50 Hz. The 6 kA breaking capacity per EN 60898 covers residential and light commercial panelboards; the 25 kA rating per IEC 60947-2 gives headroom for industrial distribution where higher prospective fault currents exist.
What the ratings mean for fit
Type A detection trips on sinusoidal AC and pulsating DC residual currents up to 6 mA smooth DC. The 30 mA sensitivity is standard for personal protection against direct contact. The C6 curve (C characteristic, 6 A rated) means magnetic trip occurs at 5 to 10 times In (30–60 A), suited for circuits with moderate inrush — lighting banks, small motor loads, socket outlets. The 1P+N design switches the phase and switches the neutral via a linked mechanism, but only the phase is protected against overcurrent; the neutral pole is switched but not monitored for overload. Two modular width units (36 mm wide, 77 mm deep, 90 mm tall) fit standard DIN-rail enclosures. Mounting position is any, so horizontal or vertical panel layouts are fine. IP20 with connected conductors means it is protected against solid objects >12 mm but not against moisture — install inside a distribution board with a sealed door.
Panel integration notes
Supply can enter from top or bottom — no mandatory orientation for line/load. The 70 mm installation depth leaves clearance behind the DIN rail for wiring. Halogen-free and silicon-free construction matters for clean-room or high-reliability environments where outgassing or contamination is a concern. Mechanical service life is 10,000 operating cycles typical. For frequent switching duty, consider a dedicated switch-disconnector ahead of the RCBO.