Square D™ Neutral Assembly, Groundable Insulated Standard, For Use With: KIL and KCL Circuit Breaker, Specifications: 225 A, NEMA 1/3R/4/4X/5/12/12K, 14 to 1/0 AWG Al, 4 AWG to 300 kcmil 2 Al/Cu, 24.3 in L x 12.9 in W x 7.9 in H Dimensions