E4.2H 4000A, 3p_ABB_PRODUCT_吉林易择科技技术发展有限公司

Technical Parameters Parameter Specification Product Name ABB E4.2H 4000A Low‑Voltage Air Circuit Breaker Series ABB SACE Emax 2 Frame Size E4.2H Rated Current (Iu) 4000 A Poles 3‑pole (3P) Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Breaking Capacity (Icu) Up to 100 kA at 400 V AC (dependent on exact version/trip unit) Short‑Time Withstand Current (Icw) 85 kA for 1 s; 75 kA for 3 s (typical) Protection Technology Electronic trip unit (e.g., Ekip Dip LI / LSI / LSI variants) Release Type Solid‑state / electronic protection (trip release) Mounting Style Fixed version with rear horizontal terminals Terminal Connection Type Bolt connections Adjustable Protection Settings Yes – long‑time, short‑time, instantaneous (depending on trip unit) Degree of Protection IP30 (mounted in breaker panel or enclosure) Standards Compliance IEC 60947‑2 for low‑voltage circuit breakers Mechanical Durability High cycle life suitable for industrial duty Typical Use Main and feeder circuit protection in power distribution systems

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DESCRIBE

The ABB E4.2H 4000A 3‑pole low‑voltage air circuit breaker, part of the ABB SACE Emax 2 series, is a high‑performance industrial circuit breaker designed for heavy‑duty power distribution applications. It delivers dependable protection against overloads, short‑circuits, and fault conditions in main and feeder circuits. The breaker features a robust E4.2H frame, is typically equipped with an electronic trip unit (such as LI or LSI), and can be supplied in a fixed configuration with rear horizontal terminals. This breaker is suitable for integration into switchboards, motor control centers, electrical distribution panels, and other demanding electrical installations requiring high current protection and coordination with downstream protection devices.

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