The 2CDS271103R0165 is an ABB S200-series miniature circuit breaker rated 16 A with a B tripping curve, meaning it trips at 3 to 5 times rated current — the standard choice for resistive and general-purpose loads where inrush is modest, like lighting circuits or control transformers. The 2-pole form factor breaks both line and neutral, common for single-phase 230 V supplies or as a switched neutral in multi-pole assemblies. The rated short-circuit breaking capacity Icn of 10 kA per IEC 60898 is the service breaking capacity — what it can clear repeatedly under normal duty. The Icu of 25 kA per IEC 60947-2 is the ultimate breaking capacity, a one-shot fault clearance rating. The IP20/IP40 rating means it's protected against solid objects over 12 mm (finger-safe) when installed in a panel; the IP40 faceplate rating adds protection against tools and small wires over 1 mm. This is a panel-mount component, not a standalone enclosure.
The 35 mm width occupies two 17.5 mm modular spaces — standard for a 2-pole MCB. The 88 mm height and 69 mm depth fit within a typical 200 mm deep enclosure with clearance for wiring. Terminal tightening torque is 2.8 Nm max for screw-type terminals, which accepts up to 25 mm² conductor. The bi-directional cylinder-lift terminal design allows both busbar and cable entry from either direction without special adapters.