Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E1 Product Type Air Circuit Breaker (ACB) Model / Code E1 800 A PR122/P‑LSI Rated Continuous Current (In / Iu) 800 A Trip Unit Type PR122/P‑LSI electronic overcurrent protection Protection Functions • L – Long‑time overload protection • S – Short‑time overcurrent protection • I – Instantaneous short‑circuit protection • G – Ground fault (residual) protection Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Short‑Circuit Breaking Capacity (Icu) High interrupting capability suitable for industrial low‑voltage networks Service Short‑Circuit Breaking Capacity (Ics) Rated service breaking capacity matching Icu Short‑Time Withstand Current (Icw) High withstand level for short‑time fault durations Number of Poles 3‑pole (three‑phase) Rated Frequency 50 / 60 Hz Mounting Options Fixed (e.g., horizontal rear) or withdrawable versions depending on switchgear Standards Compliance Complies with IEC low‑voltage circuit breaker performance and safety standards Typical Applications Main distribution protection, feeder protection in industrial/commercial switchgear