2CSF202005R3800

The ABB 2CSF202005R3800 (F202 AC-80/0.3) is a high-current 2-pole Residual Current Circuit Breaker (RCCB) from the premium F200 series. Designed to protect heavy-load electrical installations and sub-main distribution circuits against earth fault currents, it features a $300text{ mA}$ ($0.3text{ A}$) residual operating sensitivity tailored specifically for upstream fire protection and segregation, preventing persistent insulation faults from turning into fire hazards. Built in strict compliance with IEC/EN 61008 standards, it is heavily relied upon in demanding commercial and industrial electrical distribution boards.