What this RCBO does in the panel
The Siemens 5SU9326-1CR32 is a 2-pole RCBO — residual-current-operated circuit breaker — that combines overcurrent protection and earth-leakage detection in one 4-module-wide unit. It sits on a DIN rail in a distribution board, rated 32 A at 230/240 V AC with a 30 mA trip threshold and a 6 kA breaking capacity per EN 60898 and IEC 60947-2. The Type AC residual-current element catches sinusoidal AC faults; the C characteristic handles moderate inrush from motor and lighting loads without nuisance trips.
Four modular-width units (72 mm wide, 77 mm deep, 90 mm tall) snap onto standard DIN rail. Neutral conductor switching is built in — no separate neutral bar needed downstream. IP20 with the distribution board installed and conductors connected.
Halogen-free and silicon-free construction. Surge-current withstand 1 kA (8/20 μs). Touch-protected terminals. Energy limitation class 3.