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E4.2S-A，3200A

The ABB E4.2S‑A 3200A is a low‑voltage air circuit breaker from the ABB SACE Emax 2 series designed for industrial and commercial power distribution applications. It is built to protect electrical circuits from overloads, short‑circuits, and fault conditions while offering high reliability and coordination with downstream protective devices

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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) 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