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