The Siemens 5SU9106-0DV06 is a combined line-side/disconnect protective device — an RCBO integrating a Type AC residual current device (RCD) with a B-curve miniature circuit breaker (MCB) in a single 1+N-pole module. Rated at IΔn 10 mA, 6 kA breaking capacity, and 6 A overcurrent protection on the B curve, this unit covers both earth leakage and short-circuit/overload in one DIN-rail footprint.
Snap-on mounting for standard 35 mm DIN rail, 1 MW-wide module. The D=70 mm dimension indicates the overall depth from the rail to the front of the toggle. Accepts 0.2–2.5 mm² conductors on both line and load terminals. For a data-center or critical-facilities panel, this unit fits a lighting or general-purpose socket circuit where the only leakage source is sinusoidal. If the load includes VFDs, UPS front ends, or LED drivers, a Type A or Type B RCD would be required; this Type AC unit would not trip on the pulsed or smooth DC leakage those loads generate.
The 10 mA residual sensitivity is below the standard 30 mA for socket-outlet protection. That makes it suitable for circuits with a higher shock-risk exposure — medical equipment in a patient vicinity, or wet-area final circuits where a 10 mA trip threshold provides an extra safety margin before ventricular fibrillation current.