Technical Data: Series & Frame: Emax 2 (E2) - Specifically the E2N frame (optimized design) rated for 1250 A continuous current. Rated Ultimate Breaking Capacity (Icu): 65 kA or 85 kA at 415V AC (Definitive value depends on the specific E2N1250 ordering code – e.g., “R6565” for 65kA, “R8585” for 85kA). Number of Poles: 3 Poles (3P). Trip Unit: PR121/P-LSI - Digital Electronic Trip Unit. Protection Functions (Fully Adjustable): L - Overload Protection: Setting Ir = (0.4 to 1.0) x In. Time delay tr adjustable. S - Short-Time Protection: Setting Isd = (1.5 to 15) x Ir. Time delay tsd adjustable with I²t selectivity curve option. I - Instantaneous Protection: Setting Ii = (1.5 to 15) x In (fixed or adjustable). Measurement Functions: Displays real-time values for current (I), voltage (V), power (kW), energy (kWh), and power factor (cos φ) on its front-panel display. Communication: Not built-in by default. Requires optional communication module (e.g., MODBUS RTU, PROFIBUS DP, Ethernet) to be plugged into the trip unit for integration into supervisory systems. Mounting Type: Fixed (FIXED) - Permanently bolted to the switchboard assembly. (Draw-out version would be specified as “FHR” instead). Operating Mechanism: Stored-energy spring mechanism with manual charging handle. Can be optionally equipped with an electric charging motor. Standards Compliance: IEC/EN 60947-2, UL 1066, CSA C22.2 No. 5.

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E4N Product Type Air Circuit Breaker (ACB) Number of Poles 3‑pole (three‑phase) Rated Continuous Current (In / Iu) 4000 A Trip Unit Type LSI (Long-time, Short-time, Instantaneous) Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Protection Functions L (overload), S (short-time), I (instantaneous) Short-Circuit Breaking Capacity (Icu) ~66–75 kA Service Short-Circuit Capacity (Ics) Comparable to Icu Short-Time Withstand Current (Icw) Rated withstand for 1 s / 3 s Mounting Options Fixed horizontal rear (FHR) or Withdrawable (WMP) Control & Measurement Features (T) Enhanced measurement and communication functions Rated Frequency 50 / 60 Hz Standards Compliance IEC low-voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial/commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E3N Product Type Air Circuit Breaker (ACB), Withdrawable (WHR) Model E3N3200 PR121/P‑LSIG Number of Poles 4 P (three‑phase + neutral) Rated Continuous Current (In / Iu) 3200 A Trip Unit Type PR121/P‑LSIG electronic overcurrent protection Protection Functions Long-time (L), Short-time (S), Instantaneous (I), Ground fault (G) 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) ~65 kA Service Short-Circuit Capacity (Ics) ~65 kA Short-Time Withstand Current (Icw) ~65 kA (1 s / 3 s) Mounting Type Withdrawable (WHR) Rated Frequency 50 / 60 Hz Standards Compliance IEC low-voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial/commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax E3H Product Type Air Circuit Breaker (ACB) with withdrawable horizontal rear (WHR) design Model / Code E3H1250 PR121/P‑LI Configuration 3‑pole (three‑phase) Rated Continuous Current (In / Iu) 1250 A Trip Unit Type PR121/P‑LI electronic overcurrent protection Protection Functions Long‑time overload (L), Short‑time (S), Instantaneous (I), with optional ground fault (G) functionality Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Impulse Withstand Voltage (Uimp) 12 kV Rated Short‑Circuit Breaking Capacity (Icu) Up to ~100 kA (depending on system voltage) Service Short‑Circuit Breaking Capacity (Ics) ~85 kA typical Short‑Time Withstand Current (Icw) ~75 kA for 1 s / ~65 kA for 3 s Rated Frequency 50 / 60 Hz Mounting Style Withdrawable horizontal rear (WHR) for switchgear Standards Compliance IEC low‑voltage circuit breaker safety and performance standards Typical Applications Main distribution breaker, feeder breaker in industrial and commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Product Type Air Circuit Breaker (ACB), Withdrawable WMP Number of Poles 4P (three‑phase + neutral) Rated Continuous Current (In / Iu) 2500 A Rated Operational Voltage (Ue) Up to 690 V AC Rated Insulation Voltage (Ui) 1000 V AC typical Rated Impulse Withstand Voltage (Uimp) 12 kV class Short‑Circuit Breaking Capacity (Icu) High interrupting ability per IEC low‑voltage standards (typical for this frame size) Service Short‑Circuit Capacity (Ics) Suitable service breaking performance for distribution networks Short‑Time Withstand Current (Icw) High withstand ratings for short‑time fault duty Mounting / Configuration Withdrawable Horizontal Rear (WMP) for switchgear systems Rated Frequency 50 / 60 Hz Protection Integration Designed to accept compatible electronic trip units (LSI / LSIG / LI etc.) for overcurrent and earth‑fault protection Typical Applications Main distribution breaker, feeder protection in switchgear and power panels

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE Emax 2 – E2.2N Product Type Air Circuit Breaker (ACB) Number of Poles 3 (three‑phase) Rated Continuous Current (In / Iu) Available in multiple ratings (e.g., 800 A, 1250 A, 1600 A, 2000 A, 2500 A) 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 (commonly ~66 kA across typical low‑voltage levels) Service Short‑Circuit Breaking Capacity (Ics) Service capacity matching breaking capacity at distribution levels Short‑Time Withstand Current (Icw) Withstand levels for durations such as 1 s and 3 s duty Protection Modules Compatible with electronic trip units such as Dip LI, Dip LSI, LSIG, Touch LSIG, etc. Trip Functions (when equipped) Long‑time (L), Short‑time (S), Instantaneous (I), and optionally Ground fault (G) depending on trip unit Connection Type Fixed rear horizontal or withdrawable mounting possible 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 Specification Manufacturer ABB Series / Family Emax 2 – E2S Product Type Air Circuit Breaker (ACB), Withdrawable (WMP) Number of Poles 3‑pole (three‑phase) Rated Continuous Current (In / Iu) 2500 A Trip Unit Type Electronic LI (Long‑time + Instantaneous) 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 capacity (typical medium‑voltage distribution levels) Service Short‑Circuit Breaking Capacity (Ics) Rated service capacity matching interrupting rating Short‑Time Withstand Current (Icw) High withstand for typical industrial fault duty Rated Frequency 50 / 60 Hz Design / Mounting Withdrawable mobile part (WMP) for switchgear frames Protection Functions (LI) • L – Long‑time (overload) • I – Instantaneous short‑circuit Typical Applications Main breaker and feeder protection in switchgear, power distribution cabinets

Technical Parameters Parameter Specification Manufacturer ABB Series / Family SACE F4S (Megamax / F‑series air circuit breakers) Product Type Low‑voltage Air Circuit Breaker (ACB) Number of Poles 4P (three‑phase + neutral) Rated Continuous Current (In) 3200 A Rated Operational Voltage (Ue) Up to 690 V AC three‑phase Rated Insulation Voltage (Ui) 1000 V AC typical Rated Impulse Withstand Voltage (Uimp) 12 kV class Trip Unit Optional electronic trip unit (e.g., LSIG or PR1/P type) for adjustable overcurrent protection Protection Functions (when fitted) Long‑time (L), Short‑time (S), Instantaneous (I), Ground fault (G) depending on trip unit Short‑Circuit Breaking Capacity High interrupting capacity suitable for industrial networks (with appropriate trip unit and configuration) Neutral Capacity Full neutral current capability in four‑pole configuration Mounting / Installation Fixed or potentially withdrawable depending on switchgear frame and sub‑model Rated Frequency 50 / 60 Hz Typical Applications Main distribution breaker, feeder protection in industrial and commercial switchgear

Technical Parameters Parameter Specification Manufacturer ABB Model / Type PR121/P‑LSIG Product Category Electronic Overcurrent Trip Unit Application Protection for compatible ABB low‑voltage air circuit breakers Protection Functions • L – Long‑time overload protection • S – Short‑time delayed overcurrent protection • I – Instantaneous short‑circuit protection • G – Ground fault (residual) protection Adjustability Adjustable pickup levels and time settings for L, S, I, and G zones Trip Output Drives breaker trip coil to open the breaker under fault conditions User Interface Front‑panel adjustment dials or DIP switches / software configuration (model dependent) Indication LED or display status indicators for protection state and trip cause Auxiliary / Control Supply Typically requires an auxiliary/control supply (AC or DC) to power the electronics and indicators (voltage range depends on breaker platform) Poles Protected 3‑phase (L1, L2, L3) Frequency 50/60 Hz compatible Operating Environment Electrical switchgear and distribution panels Mounting Installed within the breaker protection slot/interface of compatible ABB ACBs Standards Compliance Designed to meet international low‑voltage overcurrent protection standards Typical Supported Breaker Ratings Commonly used with breakers from mid‑range to high‑current frames (e.g., several hundred to several thousand amperes depending on breaker model) Communication / Monitoring (optional) Some implementations support remote signaling or communication via breaker platform interfaces

Technical Parameters Parameter Specification Manufacturer ABB Series / Family Emax E4S Product Type Air Circuit Breaker (ACB), Fixed Horizontal Rear (FHR) Model E4S4000 PR121/P‑LI Number of Poles 3‑pole (three‑phase) Rated Continuous Current (In) 4000 A Trip Unit Type PR121/P‑LI electronic overcurrent release (Long‑time + Instantaneous) Protection Functions Long‑time overload (L) and Instantaneous short‑circuit (I) 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) ~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 Mounting / Connection Fixed Horizontal Rear terminals (FHR) 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 Model / Type PR121/P‑LI Product Category Electronic Overcurrent Trip Unit Application Protection for ABB low-voltage air circuit breakers Protection Functions • L – Long-time overload protection • I – Instantaneous short-circuit protection Adjustability Adjustable pickup levels and time settings for L and I Trip Output Drives breaker trip coil to open the breaker under fault conditions User Interface Front-panel dials, switches, or software configuration depending on implementation Indication LED or display indicators for protection status and trip cause Auxiliary / Control Supply AC or DC supply to power electronics and indicators Poles Protected 3-phase (L1, L2, L3) Rated Frequency 50 / 60 Hz Mounting Installed within the breaker’s protection slot/interface Standards Compliance IEC low-voltage overcurrent protection standards Typical Supported Breaker Ratings Mid- to high-current frames, depending on breaker model Optional Features Remote signaling, communication via breaker interface (if supported)

Technical Parameters Parameter Specification Manufacturer ABB Series / Family Emax E4S Product Type Air Circuit Breaker (ACB) Model E4S3200 PR121/P‑LSIG Number of Poles 3‑pole (three-phase) Rated Continuous Current (In) 3200 A Trip Unit Type PR121/P‑LSIG electronic overcurrent release (Long‑time + Short‑time + Instantaneous + Ground Fault) Protection Functions L – Long-time overload S – Short-time delay overcurrent I – Instantaneous short-circuit G – Ground fault (residual) 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 capacity suitable for industrial low-voltage networks Service Short‑Circuit Breaking Capacity (Ics) Matching rated breaking capacity for service conditions Short‑Time Withstand Current (Icw) High withstand for 1 s / 3 s fault duration Rated Frequency 50 / 60 Hz Mounting / Connection Fixed or withdrawable depending on switchgear frame Standards Compliance IEC low-voltage circuit breaker standards Typical Applications Main distribution breaker, feeder protection in industrial/commercial switchgear