Square D,MOLDED CASE CIRCUIT BREAKER 600V 500A,250 V DC-600 V AC,250 V DC-600 V AC,65 kA 240 V AC-18 kA 600 V AC-35 kA 480 V AC,3-Pole,500 A,500 A,Electronic Trip Circuit Breaker,M-Frame,Powerpact,Provides overload and short circuit protection,Terminal Nut Kit (ON end) - Lugs (OFF end),UL Listed - CSA Certified - IEC Rated,electronic basic,unit mount