1SYF202015R3400

The ABB 1SYF202015R3400 (FB202 AC-40/0.3) is a 2-pole Residual Current Circuit Breaker (RCCB) from the FB200 series, designed to protect electrical installations against earth fault currents and mitigate fire hazards resulting from persistent insulation faults. Featuring a $300text{ mA}$ ($0.3text{ A}$) residual operating sensitivity, it is commonly deployed as a main or sub-main fire-protection device in residential, commercial, and industrial electrical distribution boards. It complies fully with IEC 61008 / IS 12640-1 standards.