Technical Parameters Parameter Specification Product Name ABB E4.2S‑A 3200A Air Circuit Breaker Series ABB SACE Emax 2 Frame Type E4.2S‑A Rated Current (I<u>) 3200 A Number of Poles Typically 3‑pole (3P) — can also be configured 4‑pole depending on variant Rated Operational Voltage Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Rated Ultimate Short‑Circuit Breaking Capacity (Icu) Up to 85 kA @ 400–440 V AC and 66 kA @ 500–690 V AC Rated Service Short‑Circuit Breaking Capacity (Ics) Same as Icu ratings (100 % of Icu performance) Rated Short‑Time Withstand Current (Icw) ~66 kA for 1 s and 3 s Protection Trip Units Bundled with Ekip Dip LI / Ekip Dip LSIG / Ekip Touch LSI / etc. (depends on configuration) Release Type Solid‑state electronic trip (EL type) Performance Level S (Standard short‑circuit performance) Standards Compliance IEC 60947‑2 Low‑Voltage Circuit Breakers Terminal Connection Rear horizontal bolt connectors Recommended Screwdriver M12 torque specification Mechanical Durability ~20,000 operations Electrical Durability ~7,000 operations (depending on voltage and load) Power Loss Depends on trip unit and installation (typically 425–743 W) Ambient Conditions Standard industrial operating range