Parameter Category Specification Series / Frame ABB SACE Emax, E3 Frame Rated Operational Current (In) 1250 A (Continuous current at 40°C ambient). This typically corresponds to the E3.2 or E3.3 specific model within the E3 frame. Rated Operational Voltage (Ue) 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Breaking Capacity (Icu) - Options Must be specified. Common options for E3 frame: • H (High): 50 kA at 400V AC • N (Normal): 65 kA at 400V AC (A common balanced choice) • S (Super): 100 kA at 400V AC (For high fault level areas) Poles Typically 3-Pole or 4-Pole. Trip Unit Options (Critical Selection) • Electronic (Recommended for flexibility): - PR121/P: Basic electronic unit with LSI protection, measurement, and comms option. - PR122/P: Most common advanced choice for full protection (LSI), advanced measurement, logging, and communication. • Thermal-Magnetic: For fixed, non-adjustable protection (e.g., TMD-LI). Lower cost, less functionality. Mounting Style • Fixed (F): Permanently wired into the panel. Lower cost. • Draw-out (W): Highly recommended for maintenance. Allows breaker to be isolated, tested, and replaced without disturbing main busbars. Operating Mechanism Spring-operated stored energy mechanism. Can be manual or electrically charged. Standard Accessories (Configurable) Typically selected as a package (e.g., FHR NST): • Electric charging motor (M) • Shunt trip (MX) for remote opening • Auxiliary contacts (OF/SD) for status signaling (e.g., 2NO+2NC) • Undervoltage release (MN) for safety trip on control power loss Communication Available with PR121/P and PR122/P electronic trip units via plug-in modules (Modbus RTU, Profibus DP, Ethernet/IP, etc.). Mechanical Life ≥ 30,000 operations Electrical Life ≥ 10,000 operations at full rated current Short-Time Withstand Current (Icw) Typically equals the Icu rating for 1 second (e.g., 65 kA for 1s). Dimensions (Approx. for 3P Fixed) Width: ~ 300-350 mm Height: ~ 500-550 mm Depth: ~ 350-400 mm Weight (Approx. for 3P Fixed) ~ 120 - 160 kg