Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E4S Product Type Air Circuit Breaker (ACB), Withdrawable Model Code E4S4000 PR121/P‑LSIG Configuration 4‑pole (3-phase + neutral) Rated Continuous Current (In / Iu) 4000 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Trip Unit PR121/P‑LSIG Electronic Overcurrent Protection Protection Functions Long-time (L), Short-time (S), Instantaneous (I), Ground fault (G) Short-Circuit Breaking Capacity (Icu) ~75 kA Service Short-Circuit Breaking Capacity (Ics) ~75 kA Short-Time Withstand Current (Icw) ~75 kA (1 s / 3 s) Rated Frequency 50 / 60 Hz Terminal / Connection Type Withdrawable mounting (WHR) for switchgear Standards Compliance IEC low-voltage circuit breaker standards Typical Applications Main distribution, feeder protection, industrial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E2N Product Type Air Circuit Breaker (ACB), Withdrawable (WHR) Configuration 3‑pole (three-phase) Rated Continuous Current (In / Iu) 1600 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Trip Unit PR122/P-LSI electronic overcurrent protection Protection Functions Long-time (L), Short-time (S), Instantaneous (I), Ground fault (G) Short-Circuit Breaking Capacity (Icu) ~65 kA Service Short-Circuit Breaking Capacity (Ics) ~65 kA Short-Time Withstand Current (Icw) ~55 kA (1 s) / ~42 kA (3 s) Rated Frequency 50 / 60 Hz Mechanical Durability Designed for frequent operations (tens of thousands of cycles) Connection Type Withdrawable mounting (WHR) Typical Applications Main distribution protection, feeder breaker in industrial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E1N Product Type Air Circuit Breaker (ACB), Fixed Horizontal Rear (FHR) Configuration 3‑pole (three‑phase) Rated Continuous Current (In / Iu) 800 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 8–12 kV (typical) Trip Unit PR121 with P‑LSIG electronic overcurrent protection Protection Functions Long‑time (L), Short‑time (S), Instantaneous (I), Ground fault (G) Short‑Circuit Breaking Capacity (Icu) Designed for high short‑circuit current levels suitable for industrial networks Service Short‑Circuit Breaking Capacity (Ics) Suitable for distribution system requirements Short‑Time Withstand Current (Icw) Designed for rated withstand levels for 1 s and 3 s Rated Frequency 50 / 60 Hz Connection Type Fixed horizontal rear (FHR) terminals Mechanical Durability High endurance for frequent operations Typical Applications Main distribution protection, feeder breaker in electrical panels and switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E4N Product Type Air Circuit Breaker (ACB), Withdrawable (WHR) Configuration 3‑pole (three‑phase) Rated Continuous Current (In / Iu) ~3200 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) ~1000 V AC Rated Impulse Withstand Voltage (Uimp) ~12 kV Trip Unit Type Electronic LSIG overcurrent protection (Long‑time, Short‑time, Instantaneous, Ground) Protection Functions L (overload), S (short‑time), I (instantaneous), G (ground fault) Short‑Circuit Breaking Capacity (Icu) High‑capacity suitable for industrial networks Service Short‑Circuit Breaking Capacity (Ics) High level for distribution/system use Short‑Time Withstand Current (Icw) High withstand for 1 s / 3 s duty Rated Frequency 50 / 60 Hz Connection / Mounting Withdrawable (WHR) switchgear mounting Standards Compliance IEC low‑voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family Emax E2N Product Type Air Circuit Breaker (ACB), Withdrawable Horizontal Rear (WHR) Configuration 3‑pole (three‑phase) Rated Continuous Current (In / Iu) 800 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) ~8–12 kV Trip Unit Type Electronic D‑LSI overcurrent protection Protection Functions Long‑time (L), Short‑time (S), Instantaneous (I), Ground fault (G) Short‑Circuit Breaking Capacity (Icu) High interrupting capability suitable for industrial networks Service Short‑Circuit Breaking Capacity (Ics) Designed for service performance per low‑voltage distribution requirements Short‑Time Withstand Current (Icw) Withstand levels for 1 s and 3 s duty Rated Frequency 50 / 60 Hz Connection Type Withdrawable with horizontal rear terminations (WHR) Standards Compliance Meets international low‑voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial/commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family Emax E1N Product Type Air Circuit Breaker (ACB) with withdrawable design Number of Poles 3 (three‑phase) Rated Continuous Current (In / Iu) 800 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) ~1000 V AC Rated Impulse Withstand Voltage (Uimp) ~8–12 kV Trip Unit Electronic D‑LSI overcurrent protection (Long‑time, Short‑time, Instantaneous, Ground) Protection Functions L (overload), S (short‑time), I (instantaneous), G (ground fault) Short‑Circuit Breaking Capacity (Icu) Designed for industrial short‑circuit levels Service Short‑Circuit Breaking Capacity (Ics) Suitable for typical distribution requirements Short‑Time Withstand Current (Icw) Rated withstand levels for 1 s / 3 s duty Rated Frequency 50 / 60 Hz Mounting / Connection Withdrawable horizontal rear (WHR) installation Typical Applications Main distribution protection, feeder breaker in industrial/commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax 2 (E2.2 frame) Product Type Air Circuit Breaker (ACB) Rated Current (In / Iu) 1600 A Number of Poles 3 (three‑phase) Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) ~1000 V AC Rated Impulse Withstand Voltage (Uimp) ~12 kV Trip Unit (Optional) Electronic protection (LSI / LSIG depending on variant) Protection Functions Overload (L), Short‑Time (S), Instantaneous (I), Ground Fault (G) when equipped with the corresponding trip unit Short‑Circuit Breaking Capacity (Icu) Typical up to ~66 kA at 690 V AC Service Short‑Circuit Breaking Capacity (Ics) Typically similar to Icu at distribution levels Short‑Time Withstand Current (Icw) High withstand for 1 s / 3 s duty Connection Type Fixed horizontal rear terminals (FHR) Mounting Style Fixed installation in switchgear or distribution panel Rated Frequency 50 / 60 Hz Typical Applications Main power distribution, feeder protection, industrial electrical systems

Technical Parameters Parameter Specification Manufacturer ABB Product Series SACE Emax 2 – E1.2B Product Type Air Circuit Breaker (ACB), withdrawable (WMP) Configuration 3‑pole (three‑phase) Rated Continuous Current (Iu) 1250 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) ~1000 V AC Rated Impulse Withstand Voltage (Uimp) ~12 kV Trip Unit Type Ekip DIP electronic protection with LI (Long‑time + Instantaneous) Protection Functions Long‑time overload (L), Instantaneous short‑circuit (I) Overload Setting Range Adjustable from ~500 A to 1250 A Instantaneous Setting Range Adjustable in a range up to ~18750 A Short‑Circuit Breaking Capacity (Icu) ~42 kA at 400 V AC and up to 690 V AC Service Breaking Capacity (Ics) ~42 kA (typical) Auxiliary Contacts Typically includes 4 change‑over auxiliary contacts Connection Style Withdrawable module for switchgear frames Rated Frequency 50 / 60 Hz Typical Applications Main power distribution, feeder protection in industrial and commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E4 Product Type Air Circuit Breaker (Withdrawable – WMP) Model E4S4000A PR121/P-LSI Rated Continuous Current (Iu / In) 4000 A Number of Poles 3‑pole (three‑phase) Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Trip Unit Type PR121/P-LSI (Long-time, Short-time, Instantaneous, Ground fault protection) Protection Functions L (overload), S (short-time), I (instantaneous), G (ground fault) Short-Circuit Breaking Capacity (Icu) 75 kA Service Short-Circuit Capacity (Ics) 75 kA Short-Time Withstand Current (Icw) 75 kA for 1 s / 3 s Terminal Connection Type Withdrawable (WMP) Rated Frequency 50 / 60 Hz Standards Compliance IEC low-voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial and commercial switchgear

Technical Parameters Parameter Typical Specification Manufacturer ABB Series / Family SACE Emax 2 – E2.2N frame Product Type Air Circuit Breaker (ACB) Number of Poles 3 (three‑phase) Rated Continuous Current (In / Iu) Varies by model (e.g., 800 A, 1250 A, 1600 A, 2000 A, 2500 A) depending on specific variant Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) ~12 kV Trip Unit (Protection Module) Electronic types such as Ekip Dip LI, PR121/P‑LSIG, Ekip Touch LSIG, etc. Protection Functions Long‑time overload (L), Short‑time (S), Instantaneous (I), Ground fault (G) — depending on trip unit Short‑Circuit Breaking Capacity (Icu) Typically up to ~66 kA (depending on product and settings) Service Breaking Capacity (Ics) Typically equal to Icu at distribution levels Short‑Time Withstand (Icw) High withstand for 1 s and 3 s duty Connection / Mounting Options Fixed (rear horizontal) or withdrawable (WHR/WMP) Frequency 50 / 60 Hz Standards Compliance IEC / low‑voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial and commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Product Type Electronic Trip Unit for Air Circuit Breakers Model PR121/P Rated Current Setting (In) Configurable to match breaker rating (e.g., 1250 A) Power Supply / Auxiliary Voltage Typically 220‑240 V AC auxiliary supply for control and indication Protection Functions • Long‑time overload (L) • Short‑time delay (S) • Instantaneous short‑circuit (I) • Ground fault (G) ‑ depending on version (LSIG) Adjustable Settings Overload threshold and trip time range, short‑time delay and level, instantaneous pickup level User Interface Front‑panel DIP switches for setting protection thresholds and timing Indication LED indicators for protection status and trip cause Trip Output Operates breaker trip coil to open circuit under fault conditions Frequency 50 / 60 Hz operation Application Protection of low‑voltage AC distribution circuits in industrial/commercial switchgear Mounting Integrated into compatible ABB ACB protection slot Operating Environment Industrial electrical panels and switchgear

Technical Parameters Parameter Specification Manufacturer ABB Model / Type PR122/P‑LSI Trip Unit Product Category Electronic Overcurrent Protection Module Application Protection for low‑voltage air circuit breakers (3‑phase systems) Poles Protected 3P (Three‑phase protection) Protection Functions • L – Long‑time overload protection • S – Short‑time delayed overcurrent protection • I – Instantaneous short‑circuit protection • G – Ground fault / residual current protection Adjustability Adjustable pickup levels and time settings for L, S, I, G zones Trip Output Drives breaker trip coil to open under defined fault conditions User Interface Typically DIP switches, knobs, or menu settings (depending on model) Indication LEDs or digital indicators for fault status and trip cause Auxiliary / Control Supply AC or DC auxiliary supply voltage depending on breaker/platform (e.g., 110–240 V AC/DC) Frequency 50 / 60 Hz (depending on supply) Mounting Integrated within compatible ACB protection slot Typical Breaker Ratings Supported Commonly used with breakers rated from ~800 A up to ~4000 A (depending on frame size) Standards Compliance Designed to comply with international low‑voltage protection standards Operational Environment Electrical switchgear, distribution panels, industrial power networks