2 A C-curve, 10 kA — what it means for the panel
The ABB 2CDS271103R0024 is a 2-pole miniature circuit breaker with a C-curve trip characteristic and a 2 A rated current. The C-curve means it trips between 5 and 10 times rated current — 10 to 20 A — making it the standard choice for protecting general-purpose inductive loads like contactor coils, small transformers, and motor control circuits where inrush current is moderate. Its rated short-circuit breaking capacity Icn is 10 kA per IEC 60898, with an ultimate breaking capacity Icu of 25 kA per IEC 60947-2. The 10 kA Icn is the service breaking capacity — the breaker clears a fault at that level and is expected to remain functional afterward. The 25 kA Icu is the ultimate capacity: it interrupts the fault once but may need replacement. For a 2 A circuit in a typical distribution board fed by a transformer under 250 kVA, 10 kA is adequate; if the prospective short-circuit current at the panel exceeds that, the 25 kA Icu gives a safety margin for the single-interrupt case.
DIN rail fit and enclosure clearance
The breaker snaps onto a standard 35 mm DIN rail per EN 60715. At 35 mm wide (2 module spaces), it occupies two adjacent 17.5 mm slots in a distribution board. The 88 mm height and 69 mm depth fit standard enclosures with 100 mm minimum internal depth — the 69 mm depth includes the body, not the terminals; the cylinder-lift terminals accept up to 25 mm² conductor and require 2.8 Nm tightening torque. Rated insulation voltage is 440 V, with overvoltage category III — suitable for fixed-installation distribution boards downstream of the main incoming supply, not for equipment-level protection. The IP20 rating applies to the front face (finger-safe terminals), while IP40 applies to the enclosure when installed in a cabinet — the breaker itself is not sealed against water ingress.
Sourcing posture
The ABB 2CDS271103R0024 is a current-production item in the ABB System pro M compact S200 series.