Siemens 5SU1354-1KK13 — SENTRON RCBO, 13 A, 30 mA, Type C
The Siemens 5SU1354-1KK13 is a 1P+N RCBO (residual current circuit breaker with overcurrent protection) from the SENTRON family, combining a Type C miniature circuit breaker and a 30 mA residual-current device in a single 2-module-wide unit. It is rated 13 A at 230/240 V AC, 50 Hz, with a tripping characteristic C and residual current type AC for sinusoidal AC fault currents. The breaking capacity is 10 kA per EN 60898 and 20 kA per IEC 60947-2, covering most residential and light commercial distribution boards. The neutral pole is switched, and the supply can enter from either the top or bottom. This is a current-production part, actively quoted through independent distribution channels.
What the ratings mean for fit
The 13 A rated current with Type C tripping characteristic means this RCBO is sized for moderate inrush loads like small motors, lighting banks, or pump circuits — Type C trips at 5–10× rated current, so it holds through the starting surge of inductive loads without nuisance tripping. The 30 mA residual sensitivity provides additional protection against electric shock for socket-outlet circuits and final subcircuits in residential and commercial installations. The 10 kA (EN 60898) / 20 kA (IEC 60947-2) prospective fault current ratings tell you the device can safely interrupt a short-circuit up to those levels — the higher IEC 60947-2 figure is the one that matters for industrial panel coordination. The 1P+N configuration switches both phase and neutral, with the neutral pole making and breaking; this is standard for single-phase final circuits where isolation of both conductors is required.
Panel integration and environment
At 2 modular width units (36 mm wide, 90 mm tall, 77 mm deep including terminals), the 5SU1354-1KK13 snaps onto a standard DIN rail and occupies two adjacent 18 mm slots in a distribution board. The installation depth is 70 mm. Mounting position is unrestricted, and the supply cable can enter from either top or bottom. The IP20 rating is typical for enclosed distribution boards — the touch protection feature is active once conductors are connected. Ambient temperature range spans -40 °C to 75 °C, with maximum 95% humidity, which covers most indoor and sheltered outdoor enclosures. Pollution degree 2 and overvoltage category III confirm suitability for fixed installations in building distribution. The RCBO is halogen-free and silicon-free, which matters for clean-room or sensitive-environment panels where outgassing must be minimized.