1SYF204015R1250

The ABB 1SYF204015R1250 (FB204 AC-25/0.03) is a 4-pole Residual Current Circuit Breaker (RCCB) belonging to the FB200 series. Engineered to safeguard three-phase and neutral electrical installations against earth fault currents, it protects against indirect contact shocks and provides high-sensitivity direct contact protection through its $30text{ mA}$ trip threshold. It also acts as a safeguard against fire hazards triggered by persistent insulation faults. Built in strict compliance with IEC 61008 and IS 12640-1 standards, it is widely utilized across commercial, industrial, and heavy residential multi-phase distribution boards.