Square D (Schneider Electric) MGL36500 Molded Case Circuit Breakrs. Square D™ PowerPact™ M Molded Case Circuit Breaker Type MGL 600 VAC/250 VDC 500 A 50/60 Hz Frequency 18 kA Interrupt M Frame Electronic Basic ET1.0 Trip 300 to 800 A Trip 3 Pole 3 ph Electrical Actuator Lug Connection 3/0 AWG to 500 kcmil Wire 40 deg C 8.1 in L x 8.3 in W x 12.8 in H Dimensions. Additional Description: SQD -MGL36500 MOLDED CASE CIRCUIT BREAKER 600V 500A. Catalog Description: Square DMOLDED CASE CIRCUIT BREAKER 600V 500A12.80 in.3300-800A40deg Celsius50/60HZ500A600 Vac/250 Vdc65kA@240Vac - 35kA@480Vac - 18kA@600Vac8.10 in.8.30 in.Ambient environmentBasic (ET1.0)ElectronicElectronic Trip Circuit BreakerLugs (ON and OFF ends)M-FramePowerPact MProvides overload and short circuit protectionThreeUL Listed - CSA Certified - IEC RatedUnit MountVarious.