What this MCB is and where it fits
The 2CDS253001R0824 S203-C100 6kA 100A: The 2CDS253001R0824 is an ABB System Pro M Compact S200 miniature circuit breaker, 3-pole, rated 100 A with a Curve C trip characteristic. It belongs to the Miniature Circuit Breakers (MCB) category and snaps onto standard DIN rail in a distribution board or panel. The 6 kA breaking capacity means it can safely interrupt fault currents up to 6 kA at rated voltage — adequate for most commercial and light industrial sub-distribution boards where the prospective short-circuit current stays under that threshold.
Curve C trip and what it means on the line
Curve C trips between 5× and 10× rated current (500–1000 A for this 100 A breaker). That magnetic-trip band suits mixed loads with moderate inrush — think groups of small motors, contactor coils, or lighting circuits where the start-up surge is higher than a resistive heater but not as sharp as a transformer primary. The 3-pole construction covers three-phase circuits. In a panel feeding a motor control centre or a small HVAC unit, the S203-C100 clears phase-to-phase and phase-to-neutral faults without relying on an upstream device for the first fault level.
Lifecycle and sourcing reality
Sourced to order against your BOM quantity.