Siemens 5SU1323-1WM06 SENTRON RCBO — 2-pole, C-curve 6 A, 30 mA, Type AC
The Siemens 5SU1323-1WM06 is a SENTRON RCBO — a combined residual-current circuit breaker and miniature circuit breaker in one 4-module-width unit (4 MW, 70 mm deep). It protects a 2-pole (2P) final circuit against both overcurrents (C-curve, rated 6 A) and earth faults (30 mA, Type AC). Rated breaking capacity is 4.5 kA per EN 60898 and 25 kA per IEC 60947-2 — the higher figure applies when the device is used as a standalone circuit breaker under industrial panel rules. The C-curve (tripping between 5× and 10× In) suits mixed resistive-inductive loads like small motor circuits, lighting, and control transformers. Residual-current detection is Type AC (sinusoidal AC fault currents only), at the standard 30 mA threshold for personal protection. The neutral conductor is switched internally, so this RCBO can serve as the main disconnection means for a 2-wire single-phase circuit.
Panel fit and integration
Occupies 4 modular-width units (4 MW) on a DIN rail. Installation depth is 70 mm — verify enclosure depth clearance, especially in shallow consumer units. Mounting position is unrestricted; supply can enter from top or bottom. Touch protection is built in (IP20 with distribution board installed and conductors connected). Operates on 50 Hz AC supply only. Rated operational current is 6 A at AC. Overvoltage category III (distribution-level) and pollution degree 2 (non-condensing, typical for clean indoor panels).
Environmental and compliance
Halogen-free and silicon-free construction. Ambient temperature range covers -40 °C to 75 °C, with max 95% humidity (non-condensing). Mechanical service life is 10,000 switching cycles typical. Surge current withstand is 1 kA (8/20 µs waveform). Energy limitation class 3.