What this RCBO is and what it does
The Siemens SENTRON 5SU9304-6PK10 is an RCBO — a residual-current-operated circuit breaker that combines overcurrent protection and earth-leakage detection in a single 1-module-wide (18 mm) package. It's rated 10 A, B-curve, with a 30 mA residual-current trip, Type A (pulsating DC and AC fault currents). The 10 kA breaking capacity per EN 60898 and IEC 60947-2 means it can safely interrupt a fault up to that level without upstream cascading — sized for final subcircuits in residential or light commercial distribution boards.
Panel fit and mounting
Snaps onto standard DIN rail, occupies one modular width (18 mm). Depth is 77 mm, height 125 mm — fits standard enclosures with 70 mm installation depth. Mounting position any; supply can enter from top or bottom. IP20 rating applies once installed in a distribution board with conductors connected. Touch protection is built in.