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E4.2S-A 3200A

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.

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Technical Parameters Specification Details Product Type Low‑Voltage Air Circuit Breaker (ACB) Series / Model SACE Emax 2 E4.2S‑A 3200 Rated Current (In / Iu) 3200 A continuous rating Poles 3‑pole (three‑phase) or 4‑pole (with neutral option) Rated Operational Voltage (Ue) 690 V AC (standard low‑voltage distribution) Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Short‑Circuit Breaking Capacity (Icu) • 85 kA at 220–440 V AC • 66 kA at 500–690 V AC Rated Service Short‑Circuit Breaking Capacity (Ics) Same as Icu (100 % of rated) Short‑Time Withstand Current (Icw) ~66 kA for 1 s / 3 s Mechanical Durability ~20 000 operations Electrical Durability ≥ 7000 operations at rated load Release / Trip Unit Ekip electronic trip units (Ekip Dip, Ekip Touch), configurable Short‑Circuit Performance Level S level (industrial performance) Standards Compliance IEC/EN 60947‑2 series (International standards) Terminal Connection Type Rear bolt‑type terminals (horizontal/rear orientation) Tightening Torque (Main Terminals) ~70 N·m Suitable for IT Networks Yes (up to 690 V) Applications Main / feeder breaker, motor/transformer protection, general distribution circuits