Square D™ PowerPact™ J Molded Case Circuit Breaker, Series: JGA, 600 VAC/250 VDC, 250 A, 50/60 Hz Frequency, 18/20 kA Interrupt, J Frame, Thermal/Magnetic Trip, 1250 A Low, 2500 A High Trip, 3 Pole, 3 ph, I-Line™/Load Lug Connection, 3/0 AWG to 350 kcmil Wire, Plug-On Mounting, -13 to 158 deg F, 4.12 in W x 5 in D x 7.52 in H Dimensions