This interior main lugs panelboard is one of the Schneider Electric NQ lighting and appliance panelboards. It is a 3 phase, 4 wire panelboard with a plated copper bus and tin plated aluminum lugs suitable for aluminum or copper. The phase lugs accept 2-1/0 AWG to 750kcmil conductors, and the neutral lugs accept 1-1/0 AWG to 750kcmil or 2-1/0 AWG to 300kcmil conductors. It has a voltage rating of 240VAC or 48VDC and is rated for 600A line current and 10kA, 22kA, and 65kA interrupted current. It has 84 spaces for bolt on (QOB or QHB) circuit breakers to provide protection for branch circuits. It is compliant with CSA and UL standards.