25 A, 2-pole, 30 mA Type A — what each rating means for the install
The ABB 2CSF202199R1250 F202 A-25/0,03 110V is a 2-pole residual current circuit breaker rated 25 A at 110 V AC. The 30 mA trip sensitivity is the standard for personal protection against direct contact — it catches leakage currents that could pass through the body, well below the fibrillation threshold. Type A detection means it responds to sinusoidal AC fault currents and pulsed DC fault currents up to 6 mA of smooth DC superimposed — the minimum for circuits with single-phase rectified loads like washing machines, LED drivers, or small VFDs.