Square D™ Molded Case Circuit Breaker, Standard Type LAL, 600 VAC/250 VDC, 300 A, 50/60 Hz, 250 VDC/600 VAC/42 kA at 240 VAC/30 kA at 480 VAC/22 kA at 600 VAC/10 kA at 125 VDC/10 kA at 250 VDC Interrupt, L Frame, Thermal Magnetic Trip, 300/1500/3000 A Trip, 3 Pole, 3 ph, Line/Load Lug, 1 AWG to 600 kcmil, (2) 250 kcmil Wire, 104 deg F, 5.84 in L x 6 in W x 5.8 in D x 11 in H