Parameter Category Specification Series / Frame ABB SACE Emax, E3 Frame Rated Operational Current (In) 2500 A 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 PR11 Electronic Trip Unit Protection Functions LI (Long-time & Instantaneous only) • L (Ir): 0.4 - 1.0 x In (1000A - 2500A) adjustable. • I (Ii): Fixed or adjustable high setting (e.g., 10 x In = 25kA). • NO Short-time (S) Delay. Standard Included Accessories • Draw-out Mechanism (W) with safety interlocks. • Electric Charging Motor (M). • Shunt Trip (MX) (P) for remote opening. Typical Additional (Optional) Accessories • Auxiliary Contacts (OF/SD) for status signaling (often included but not in code; verify). • Undervoltage Release (MN). • Additional alarm contacts. Operation Spring-operated stored energy mechanism. Closing can be manual or electrical (requires separate closing release - XF). Communication The PR11 trip unit typically has limited or no communication capability. For communication, a higher-level trip unit (PR121, PR122) is required. Standards IEC 60947-2, UL 489 Typical Application Main incoming breaker for large transformers (2000-2500kVA), bus-tie breaker, or feeder for very large loads where selective coordination is achieved upstream or is not required