1SYF204015R1630

The ABB 1SYF204015R1630 (FB204 AC-63/0.03) is a 4-pole Residual Current Circuit Breaker (RCCB) from the FB200 series, engineered to protect three-phase and neutral electrical installations against earth fault currents. It provides robust protection against indirect contact shocks and offers high-sensitivity direct contact protection through its $30text{ mA}$ trip threshold, while also preventing fire hazards caused 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 switchboards.