Technical Parameters Parameter Category Description / Value Brand & Series Eaton, T5B Series Model Number T5B-4-15682/I4/SVB Rated Operational Current (Ie) 125 A (at AC-23) Number of Poles 4-Pole (3 phases + neutral) Rated Operational Voltage (Ue) 690V AC Rated Insulation Voltage (Ui) 750V AC Rated Impulse Withstand Voltage (Uimp) 8 kV Utilization Categories AC-22 (Switching mixed resistive and inductive loads) AC-23 (Switching motor loads) Breaking Capacity Typically 30 kA (at 400V AC) Auxiliary Contacts I4 - Specific auxiliary contact configuration (e.g., 2 NO + 2 NC) Terminal Type SVB - Shrouded Terminal Barrier for enhanced safety Operation Type Rotary Handle Operation Mechanical Life ~ 10,000 operations Electrical Life ~ 1,500 operations (at rated current) Mounting Panel Mount Standards Compliance IEC/EN 60947-3