The ABB E4.2S‑A 3200 A is a fixed‑frame low‑voltage air circuit breaker (ACB) designed for industrial, commercial, and utility power distribution systems requiring robust protection against overload, short‑circuit, and fault conditions. It is part of ABB’s SACE Emax 2 E4.2 series, offering high current capacity up to 3200 A and strong breaking performance for demanding electrical environments.