Parameter Category Specification Series / Frame ABB SACE Emax, E1 Frame (E1.2) Rated Operational Current (In) 1000 A (Frame rating). Trip setting (Ir) adjustable down to ~400A (per R400 code interpretation). Rated Operational Voltage (Ue) 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Poles 3 Breaking Capacity (Icu at 400V AC) 65 kA (N version) Mounting Draw-out (Withdrawable) on a truck. Trip Unit PR121/P Electronic Trip Unit Protection Functions LI (Long-time & Instantaneous only) • L (Ir): Adjustable, likely range 0.4 - 1.0 x In (400A - 1000A). The R400 may set a base. • I (Ii): Adjustable (e.g., 2 - 14 x In) or OFF. • NO Short-time (S) Delay. Standard Included Accessories • Draw-out Truck (W) with safety interlocks. • Handle/Door Coupling Kit (H). • Shunt Trip (MX) (R) for remote opening. Typical Additional (Optional) Accessories • Electric Charging Motor (M) - NOT in code. Must verify if included. • Auxiliary Contacts (OF/SD) - NOT in code. Must verify. • Undervoltage Release (MN) - NOT in code. Must verify. Control Voltage Shunt Trip (R) requires an external control supply (e.g., 110V DC, 220V DC, 230V AC). Must be specified separately. Operation Spring-operated stored energy mechanism. Closing can be manual or electrical (requires separate closing release - XF). Charging is likely manual unless Motor (M) is specified. Communication The PR121/P trip unit supports communication via an optional add-on module (Ekip Com) for Modbus, Profibus, etc. Standards IEC 60947-2, UL 489 Typical Application Feeder protection for large loads or sub-distribution where instantaneous tripping is acceptable and selective coordination is provided upstream or is not critical.