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) 50 kA (H version) Mounting Draw-out (Withdrawable) on a truck with safety interlocks. Trip Unit Type Thermal-Magnetic (TMD/LI or similar) - Fixed or minimally adjustable. • Long-time Protection (L) Fixed inverse-time thermal tripping characteristic. Preset to the breaker's rated current (2500A). • Short-time Protection (S) Not present. No adjustable short-time delay. • Instantaneous Protection (I) Fixed magnetic trip threshold. The R25 may indicate a specific setting (e.g., 10 x In = 25kA). • Ground-Fault Protection (G) Not included. • Adjustability Very limited or none. Cannot be fine-tuned for selective coordination. Standard Included Accessories • Draw-out Truck (W) • Electric Charging Motor (M) • Shunt Trip (MX) (P) Typical Additional (Optional) Accessories • Auxiliary Contacts (OF/SD) - Not in code, must be verified. • Undervoltage Release (MN) - Not in code, must be verified. • Closing Release (XF) - For electrical closing. Control Voltage Motor (M) and Shunt Trip (P) require an external control supply (e.g., 110V DC, 220V DC). Must be specified separately. Operation Spring-operated stored energy mechanism. Closing can be manual or electrical (if XF is installed). Communication None. Thermal-magnetic trip units do not have communication capabilities. Standards IEC 60947-2, UL 489 Typical Application Main or feeder breaker where selective coordination is not required or is handled upstream. Often used as a backup protection device or for circuits with simple protection needs.