The adjustable overload release (A-release) covers 9 to 12 A, and the magnetic short-circuit release (N-release) is fixed at 163 A.
These figures let you coordinate downstream contactors and feeders: the breaker takes the high fault energy, so the contactor only needs to break its own rated current. For a 12.5 A motor circuit on a 400 V supply with a high available fault current (say, near a large transformer), this breaker gives you the SCCR headroom to avoid cascading failures upstream.
The A-release is set via a rotary dial on the front; the handle shows the switching status visually. An integrated auxiliary switch (1 NO + 1 NC contact) is included, so you can feed a PLC input or a contactor coil without adding a separate block. The size S0 footprint — 45 mm wide — matches the standard SIRIUS contactor comb footprint for direct motor starter assemblies.