ReliaGear Pro-Stock panelboards offer a symmetrical design for top or bottom feed with main breaker or main lugs. With a reversible interior, there is no need to specify top or bottom feed. Modular kits are available from inventory for immediate availability to your customers in over 1,500 panel designs. Main bus ratings of 250 A and 400 A main breaker; 225 A, 400 A and 600A main lug available.