The ABB 2CDS271006R0165 is a 1-pole miniature circuit breaker from the System pro M compact S200 series, rated 16 A with B-curve tripping characteristics. It fits a standard 17.5 mm DIN-rail slot — one module wide — and is sized for lighting, socket-outlet, and general-purpose protection in residential and light commercial distribution boards.
Breaking capacity and coordination
Rated short-circuit breaking capacity Icn is 10 kA per EN 60898, which is the standard for household and similar installations. The ultimate breaking capacity Icu is 15 kA per IEC 60947-2, covering industrial panel applications where the prospective fault current may be higher. For most distribution boards fed from a 100–200 kVA transformer, 10 kA is sufficient; the 15 kA Icu gives headroom for closer-coupled sub-distribution or higher-fault installations. Overvoltage category III means the MCB is rated for fixed installation downstream of the main distribution board — permanent connection, not plug-in. Rated insulation voltage 440 V covers 230/400 V three-phase systems with margin.
Mounting and enclosure fit
DIN-rail mount on a standard 35 mm top-hat rail. Width 17.5 mm, height 88 mm, depth 69 mm — one module, so it occupies a single 18 mm pitch in a distribution board. IP20 at the front terminals, IP40 for the enclosure body: suitable for dry indoor panels, not for washdown or outdoor exposure. Screw terminals accept up to 2.8 Nm tightening torque — typical for 2.5–4 mm² conductors.