Panel fit and breaking capacity
The ABB 2CDS271103R0065 is a 2-pole miniature circuit breaker (MCB) from the System pro M compact series, designed for DIN-rail mounting in distribution boards and sub-distribution panels. Its B-curve tripping characteristic and 6 A rated current make it a standard choice for protecting lighting circuits and general-purpose socket outlets in residential or light commercial installations. The rated short-circuit breaking capacity Icn of 10 kA and the ultimate breaking capacity Icu of 25 kA tell the real story: this breaker can safely interrupt a fault up to 25 kA once (Icu) and still be functional, while it is rated to clear 10 kA repeatedly (Icn) — the figure that governs its application in a panel with a known prospective short-circuit current. For a 6 A B-curve MCB, 10 kA Icn covers the majority of domestic and small commercial panel scenarios where the supply transformer impedance limits the fault level.
Voltage rating and installation environment
Rated insulation voltage is 440 V, and the overvoltage category is III — meaning it is intended for fixed installations downstream of the main distribution board, where transient overvoltages from the utility network are already attenuated but still present. The IP20 rating covers the terminals (finger-safe), while the IP40 rating applies to the housing, so the breaker is suited for clean, dry enclosures — not washdown or outdoor exposure without a secondary cabinet. The bi-directional cylinder-lift terminal accepts both copper and aluminium conductors and requires a tightening torque of up to 2.8 Nm — a standard value for this current class, compatible with common electrician screwdrivers and torque-limited drivers used in panel assembly.
Sourcing and lifecycle posture
The ABB 2CDS271103R0065 is classified as a current-production item.