Integrator note — 2CDS251103R0204
The ABB 2CDS251103R0204 is a 2-pole miniature circuit breaker with a C tripping characteristic, rated 20 A continuous at 440 V insulation voltage. The C-curve means it holds up to 5–10× rated current for short overloads before tripping — typical for motor-starting or transformer inrush where you need to ride through a brief surge without nuisance trips. The 6 kA Icn (rated short-circuit breaking capacity per IEC 60898) covers most residential and light commercial panel faults; the 20 kA Icu (ultimate breaking capacity per IEC 60947-2) tells you it can interrupt a higher fault once without damage, which matters for industrial sub-distribution where fault levels are higher.
The bi-directional cylinder-lift terminals accept up to 2.8 Nm tightening torque — solid for copper conductors up to 25 mm².